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Baldwin AK, Corsi SR, Alvarez DA, Villeneuve DL, Ankley GT, Blackwell BR, Mills MA, Lenaker PL, Nott MA. Potential Hazards of Polycyclic Aromatic Hydrocarbons in Great Lakes Tributaries Using Water Column and Porewater Passive Samplers and Sediment Equilibrium Partitioning. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2024; 43:1509-1523. [PMID: 38860662 DOI: 10.1002/etc.5896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 06/12/2024]
Abstract
The potential for polycyclic aromatic hydrocarbon (PAH)-related effects in benthic organisms is commonly estimated from organic carbon-normalized sediment concentrations based on equilibrium partitioning (EqP). Although this approach is useful for screening purposes, it may overestimate PAH bioavailability by orders of magnitude in some sediments, leading to inflated exposure estimates and potentially unnecessary remediation costs. Recently, passive samplers have been shown to provide an accurate assessment of the freely dissolved concentrations of PAHs, and thus their bioavailability and possible biological effects, in sediment porewater and overlying surface water. We used polyethylene passive sampling devices (PEDs) to measure freely dissolved porewater and water column PAH concentrations at 55 Great Lakes (USA/Canada) tributary locations. The potential for PAH-related biological effects using PED concentrations were estimated with multiple approaches by applying EqP, water quality guidelines, and pathway-based biological activity based on in vitro bioassay results from ToxCast. Results based on the PED-based exposure estimates were compared with EqP-derived exposure estimates for concurrently collected sediment samples. The results indicate a potential overestimation of bioavailable PAH concentrations by up to 960-fold using the EqP-based method compared with measurements using PEDs. Even so, PED-based exposure estimates indicate a high potential for PAH-related biological effects at 14 locations. Our findings provide an updated, weight-of-evidence-based site prioritization to help guide possible future monitoring and mitigation efforts. Environ Toxicol Chem 2024;43:1509-1523. © 2024 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Austin K Baldwin
- Idaho Water Science Center, U.S. Geological Survey, Boise, Idaho
| | - Steven R Corsi
- Upper Midwest Water Science Center, U.S. Geological Survey, Madison, Wisconsin
| | - David A Alvarez
- Columbia Environmental Research Center, U.S. Geological Survey, Columbia, Missouri
| | - Daniel L Villeneuve
- Great Lakes Toxicology and Ecology Division, U.S. Environmental Protection Agency, Duluth, Minnesota
| | - Gerald T Ankley
- Great Lakes Toxicology and Ecology Division, U.S. Environmental Protection Agency, Duluth, Minnesota
| | - Brett R Blackwell
- Great Lakes Toxicology and Ecology Division, U.S. Environmental Protection Agency, Duluth, Minnesota
| | - Marc A Mills
- Office of Research and Development, U.S. Environmental Protection Agency, Cincinnati, Ohio
| | - Peter L Lenaker
- Upper Midwest Water Science Center, U.S. Geological Survey, Madison, Wisconsin
| | - Michelle A Nott
- Upper Midwest Water Science Center, U.S. Geological Survey, Madison, Wisconsin
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Ghetu CC, Moran IL, Scott RP, Tidwell LG, Hoffman PD, Anderson KA. Concurrent assessment of diffusive and advective PAH movement strongly affected by temporal and spatial changes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168765. [PMID: 37992832 PMCID: PMC10872464 DOI: 10.1016/j.scitotenv.2023.168765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/18/2023] [Accepted: 11/19/2023] [Indexed: 11/24/2023]
Abstract
Chemical movement influences exposure, remediation and interventions. Understanding chemical movement in addition to chemical concentrations at contaminated sites is critical to informed decision making. Using seepage meters and passive sampling devices we assessed both diffusive and advective flux of bioavailable polycyclic aromatic hydrocarbons (PAHs) at three time points, across two seasons, at a former creosote site in St. Helens, Oregon, United States. To our knowledge, this is the first time both diffusive and advective fluxes have been measured simultaneously at a contaminated site. Concentrations of 39 parent PAHs were determined by gas chromatography triple quadrupole mass spectrometry. Across both seasons and all sites, diffusive flux of PAHs was up to three orders of magnitude larger than advective flux. Release of PAHs from sediments and water were identified, likely from legacy contamination, as well as deposition from the air into the site from contemporary and other sources. The majority of PAH movement was comprised of three and four ring PAHs. Chemical movement on the site was found to be spatially and temporally variable. Volatilization decreased and atmospheric deposition increased from summer to fall. At the locations with higher levels of contamination, sum PAH release from sediments decreased by more than two orders of magnitude from summer to late fall. These data reflect the spatial heterogeneity and temporal variability of this site and demonstrate the importance of seasonality in assessing chemical movement at contaminated sites. Results from this study can inform future legacy site assessments to optimize remediation strategies and assess remediation effectiveness.
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Affiliation(s)
- Christine C Ghetu
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
| | - Ian L Moran
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
| | - Richard P Scott
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
| | - Lane G Tidwell
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
| | - Peter D Hoffman
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
| | - Kim A Anderson
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA.
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Hussain T, Athanasiou D, Rao B, Bejar M, Rakowska M, Drygiannaki I, Chadwick DB, Colvin MA, Hayman NT, Rosen GH, Otto M, Steets B, Pitt R, Reible DD. Sediment recontamination potential and biological impacts of hydrophobic organics from stormwater in a mixed-use watershed. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167444. [PMID: 37777135 DOI: 10.1016/j.scitotenv.2023.167444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/23/2023] [Accepted: 09/26/2023] [Indexed: 10/02/2023]
Abstract
This study focused on understanding the influence of stormwater on sediment recontamination and biota bioaccumulation. Stormwater and sediment sampling was conducted at Paleta Creek San Diego, CA, a mixed-use urban watershed. Stormwater samples were size fractioned into clay, silt, sand, and filtered fractions to better understand the association of PAHs and PCBs with different particle sizes. Settling traps were deployed during storm seasons to capture solid particles deposited by stormwater. Bioaccumulation studies of the receiving water sediments were conducted on bent-nosed clams (Macoma nasuta) both in-situ and ex-situ. The results indicated that the majority of PAHs and PCBs were discharged during the early stages of the storm and were primarily associated with coarser particles (>20 μm). Sediment near the discharge exhibited higher levels of contaminants, consistent with the findings from the settling traps and stormwater discharges. Ex-situ bioaccumulation studies demonstrated that sediment contamination did not correlate with bioaccumulation in Macoma nasuta, whereas porewater accurately reflected bioaccumulation trends. This study highlights the importance of considering stormwater discharge patterns and particle sizes when assessing sediment recontamination but also that the resulting bulk sediment contamination may not reflect bioavailability as measured by organism bioaccumulation. These insights contribute to a better understanding of the impacts of stormwater runoff on sediment and biota in southern California coastal watersheds, aiding in the development of effective management strategies.
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Affiliation(s)
- Tariq Hussain
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA
| | - Dimitrios Athanasiou
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA
| | - Balaji Rao
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA
| | - Michelle Bejar
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA
| | - Magdalena Rakowska
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA
| | - Ilektra Drygiannaki
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA
| | - D Bart Chadwick
- Naval Warfare Information Center Pacific, 53560 Hull St, San Diego, CA 92152-5001, USA
| | - Marienne A Colvin
- Naval Warfare Information Center Pacific, 53560 Hull St, San Diego, CA 92152-5001, USA
| | - Nickolas T Hayman
- Naval Warfare Information Center Pacific, 53560 Hull St, San Diego, CA 92152-5001, USA
| | - Gunther H Rosen
- Naval Warfare Information Center Pacific, 53560 Hull St, San Diego, CA 92152-5001, USA
| | - Megan Otto
- Geosyntec Consultants, 924 Anacapa St #4a, Santa Barbara, CA 93101, USA
| | - Brandon Steets
- Geosyntec Consultants, 924 Anacapa St #4a, Santa Barbara, CA 93101, USA
| | - Robert Pitt
- University of Alabama, Tuscaloosa, AL 35487, USA
| | - Danny D Reible
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA.
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Grundy JS, Lambert MK, Burgess RM. Passive Sampling-Based versus Conventional-Based Metrics for Evaluating Remediation Efficacy at Contaminated Sediment Sites: A Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37364241 PMCID: PMC10404352 DOI: 10.1021/acs.est.3c00232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Passive sampling devices (PSDs) are increasingly used at contaminated sites to improve the characterization of contaminant transport and assessment of ecological and human health risk at sediment sites and to evaluate the effectiveness of remedial actions. The use of PSDs after full-scale remediation remains limited, however, in favor of evaluation based on conventional metrics, such as bulk sediment concentrations or bioaccumulation. This review has three overall aims: (1) identify sites where PSDs have been used to support cleanup efforts, (2) assess how PSD-derived remedial end points compare to conventional metrics, and (3) perform broad semiquantitative and selective quantitative concurrence analyses to evaluate the magnitude of agreement between metrics. Contaminated sediment remedies evaluated included capping, in situ amendment, dredging and monitored natural recovery (MNR). We identify and discuss 102 sites globally where PSDs were used to determine remedial efficacy resulting in over 130 peer-reviewed scientific publications and numerous technical reports and conference proceedings. The most common conventional metrics assessed alongside PSDs in the peer-reviewed literature were bioaccumulation (39%), bulk sediments (40%), toxicity (14%), porewater grab samples (16%), and water column grab samples (16%), while about 25% of studies used PSDs as the sole metric. In a semiquantitative concurrence analysis, the PSD-based metrics agreed with conventional metrics in about 68% of remedy assessments. A more quantitative analysis of reductions in bioaccumulation after remediation (i.e., remediation was successful) showed that decreases in uptake into PSDs agreed with decreases in bioaccumulation (within a factor of 2) 61% of the time. Given the relatively good agreement between conventional and PSD-based metrics, we propose several practices and areas for further study to enhance the utilization of PSDs throughout the remediation of contaminated sediment sites.
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Affiliation(s)
- James S Grundy
- Oak Ridge Institute for Science and Education c/o U.S. Environmental Protection Agency, ORD/CEMM, Atlantic Coastal Environmental Sciences Division, Narragansett, Rhode Island 02882, United States
- U.S. Environmental Protection Agency, OLEM, Office of Superfund Remediation and Technology Innovation, Edison, New Jersey 08837, United States
| | - Matthew K Lambert
- U.S. Environmental Protection Agency, OLEM, Office of Superfund Remediation and Technology Innovation, Washington, District of Columbia 20460, United States
| | - Robert M Burgess
- U.S. Environmental Protection Agency, ORD/CEMM, Atlantic Coastal Environmental Sciences Division, Narragansett, Rhode Island 02882, United States
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Burkhard LP, Elonen GE, Mount DR. Review of DDT, DDE, DDD, DDMU and DDMS Toxicity Data for Organisms Used in Estuarine and Marine Sediment Toxicity Tests. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2023; 110:115. [PMID: 37318625 PMCID: PMC10804709 DOI: 10.1007/s00128-023-03754-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 05/02/2023] [Indexed: 06/16/2023]
Abstract
The open literature was searched for laboratory toxicity data for marine/estuarine organisms exposed to dichlorodiphenyltrichloroethane (DDT) and its degradation products of dichlorodiphenyldichloroethylene (DDE), dichlorodiphenyldichloroethane (DDD), dichlorodiphenylchloroethylene (DDMU), and dichlorodiphenylchloroethane (DDMS). The goal of the review was to determine water-column toxicity values that could be used for porewater-based assessment of sediment toxicity. Data for individual compounds (and isomers thereof) in this group were very limited; most available data were for mixtures of multiple compounds, some defined and others undefined. Further, the majority of relevant studies involved exposure to spiked or field-contaminated sediment (rather than waterborne exposure), which requires inferring concentration in porewater from bulk sediment. Comparing data on the basis of effect concentrations for water or inferred concentration in sediment pore water, the lower reported effect concentrations were in the range of 0.05 to 0.1 µg/L, generally in studies of longer duration and/or evaluating sub-lethal effects. Because field exposures are generally to mixtures of these compounds in varied proportions, additional data on chemical-specific toxicity would aid in pore-water based toxicity assessment for marine/estuarine sediments contaminated with DDT-related chemicals.
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Affiliation(s)
- Lawrence P Burkhard
- Great Lakes Toxicology and Ecology Division, Center for Computational Toxicology and Exposure (CCTE), Office of Research and Development, U.S. Environmental Protection Agency, 6201 Congdon Blvd, Duluth, MN, 55804, USA
| | - Gregory E Elonen
- Specpro Professional Services (SPS), 6201 Congdon Blvd, Duluth, MN, 55804, USA
| | - David R Mount
- Great Lakes Toxicology and Ecology Division, Center for Computational Toxicology and Exposure (CCTE), Office of Research and Development, U.S. Environmental Protection Agency, 6201 Congdon Blvd, Duluth, MN, 55804, USA.
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Shen X, Hussain T, Mitchek M, Wong J, Reible D. Evaluating the Sorption Kinetics of Polychlorinated Biphenyls in Powdered and Granular Activated Carbon. WATER RESEARCH 2023; 236:119978. [PMID: 37084576 DOI: 10.1016/j.watres.2023.119978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/08/2023] [Accepted: 04/11/2023] [Indexed: 05/03/2023]
Abstract
Activated carbon (AC) has been applied widely in water treatment as a strong sorbent for organic contaminants and, more recently, in-situ treatment and capping for remediating legacy contaminants. In some sediment environments, the sorption kinetics onto AC may significantly impact remedial performance, particularly for large, highly hydrophobic contaminants such as PCBs, but there is limited kinetic data on such compounds. In this study, batch experiments were conducted over 52 weeks to measure PCB adsorption kinetics on 2 ACs in granular (1.1 mm diameter) and powdered (0.02 mm) form using polydimethylsiloxane (PDMS) fibers to measure aqueous concentrations over time. The experiment was conducted in glass containers with water at known PCB concentration and containing 10 mg/L natural organic matter (NOM) and activated carbon. Blanks without activated carbon were used to estimate kinetics and equilibrium uptake to PDMS and NOM. The PDMS measured aqueous concentration in AC containing slurries was then used to estimate kinetics and equilibrium uptake of the various PCBs onto the AC. Achieving equilibration of PCBs onto the powdered activated carbon (PAC) was accomplished in days to weeks, but granular activated carbon (GAC) uptake was not complete for some high molecular weight congeners in a year. The data were used to fit linear driving force models with both linear and Freundlich models of equilibrium. The models were then used to predict uptake onto powdered and granular AC during in-situ capping and treatment using the CapSim model. Slow kinetics can significantly limit the performance of granular AC in high upwelling (> 1-10 cm/day) environments. This study demonstrates the usage of polymeric passive samplers to explore sorption kinetics and equilibrium for low solubility compounds as well as the differences in performance of granular and powdered forms of AC for remediation of PCB contaminated sediment.
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Affiliation(s)
- Xiaolong Shen
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, 911 Boston Ave., Lubbock, TX 79409, USA
| | - Tariq Hussain
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, 911 Boston Ave., Lubbock, TX 79409, USA
| | - Micala Mitchek
- ADA Carbon Solution, Inc, 8051 E. Maplewood Ave, Suite 210, Greenwood Village, Colorado 80111, USA
| | - Joe Wong
- ADA Carbon Solution, Inc, 8051 E. Maplewood Ave, Suite 210, Greenwood Village, Colorado 80111, USA
| | - Danny Reible
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, 911 Boston Ave., Lubbock, TX 79409, USA.
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Macías M, Jiménez JA, Rodríguez de San Miguel E, Moreira-Santos M. Appraisal on the role of passive sampling for more integrative frameworks on the environmental risk assessment of contaminants. CHEMOSPHERE 2023; 324:138352. [PMID: 36898436 DOI: 10.1016/j.chemosphere.2023.138352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/20/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
Over time multiple lines of research have been integrated as important components of evidence for assessing the ecological quality status of water bodies within the framework of Environmental Risk Assessment (ERA) approaches. One of the most used integrative approaches is the triad which combines, based on the weight-of-evidence, three lines of research, the chemical (to identify what is causing the effect), the ecological (to identify the effects at the ecosystem level) and the ecotoxicological (to ascertain the causes of ecological damage), with the agreement between the different lines of risk evidence increasing the confidence in the management decisions. Although the triad approach has proven greatly strategic in ERA processes, new assessment (and monitoring) integrative and effective tools are most welcome. In this regard, the present study is an appraisal on the boost that passive sampling, by allowing to increase information reliability, can give within each of the triad lines of evidence, for more integrative ERA frameworks. In parallel to this appraisal, examples of works that used passive samplers within the triad are presented providing support for the use of these devices in a complementary form to generate holistic information for ERA and ease the process of decision-making.
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Affiliation(s)
- Mariana Macías
- Departamento de Química Analítica, Facultad de Química, UNAM, Ciudad Universitaria, 04510, Cd.Mx., Mexico
| | - Jesús A Jiménez
- Departamento de Química Analítica, Facultad de Química, UNAM, Ciudad Universitaria, 04510, Cd.Mx., Mexico
| | | | - Matilde Moreira-Santos
- CFE-Centre for Functional Ecology - Science for People and the Planet, Associate Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456, Coimbra, Portugal
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Garza-Rubalcava U, Smith AV, Thomas C, Mills MA, Jackson WA, Reible DD. Long-term monitoring and modeling of PAHs in capped sediments at the Grand Calumet River. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 328:121633. [PMID: 37075922 DOI: 10.1016/j.envpol.2023.121633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 05/03/2023]
Abstract
The assessment of a cap for remediation of sediments requires long-term monitoring because of the slow migration of contaminants in porous media. In this study, coring and passive sampling tools were used to assess the transport and degradation of polycyclic aromatic hydrocarbons (PAHs) in an amended cap (sand + Organoclay® PM-199) in the Grand Calumet River (Indiana, USA) during four sampling events from 2012 to 2019. Measurements of three PAHs (phenanthrene (Phe), pyrene (Pyr) and benzo[a]pyrene (BaP), representing low, medium, and high molecular weight compounds, respectively) showed a difference of at least two orders of magnitude between bulk concentrations in the native sediments and the remediation cap. Averages of pore water measurements also showed lower levels in the cap respective to the native sediments by a factor of at least 7 for Phe and 3 for Pyr. In addition, between the baseline (BL), which corresponds to observations from 2012 to 2014, and the measurements in 2019, there was a decrease in depth-averaged pore water concentrations of Phe (C2019/CBL=0.20-0.07+0.12 in sediments and 0.27-0.10+0.15 in cap) and Pyr (C2019/CBL=0.47-0.12+0.16 in sediments and 0.71-0.20+0.28 in the cap). In the case of BaP in pore water, no change was observed in native sediments (C2019/CBL=1.0-0.24+0.32) and there was an increase in the cap (C2019/CBL=2.0-0.54+0.72). Inorganic anions and estimates of pore water velocity along with measurements of PAHs were used to model the fate and transport of contaminants. The modeling suggested that degradation of Phe (t1/2=1.12-0.11+0.16 years) and Pyr (t1/2=5.34-1.8+5.3 years) in the cap is faster than migration, thus the cap is expected to be protective of the sediment-water interface indefinitely for these constituents. No degradation was noted in BaP and the contaminant is expected to reach equilibrium in the capping layer over approximately 100 years if there exists sufficient mass of BaP in the sediments and there is no deposition of clean sediment at the surface.
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Affiliation(s)
| | - Alex V Smith
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, USA
| | | | | | - W Andrew Jackson
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, USA
| | - Danny D Reible
- Department of Chemical Engineering, Texas Tech University, USA; Department of Civil, Environmental and Construction Engineering, Texas Tech University, USA.
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Hiki K, Fischer FC, Nishimori T, Endo S, Watanabe H, Yamamoto H. Influence of water exchange rates on toxicity and bioaccumulation of hydrophobic organic chemicals in sediment toxicity tests. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2023; 25:609-620. [PMID: 36779546 DOI: 10.1039/d2em00462c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In standardized sediment toxicity tests, the applied water exchange methods range from static to flow-through conditions and vary between protocols and laboratories even for the same test species. This variation potentially results in variable chemical exposure, hampering the interpretation of toxicity and bioaccumulation. To address these issues, we performed sediment toxicity tests with a mixture of three polycyclic aromatic hydrocarbons (PAHs) and the freshwater epibenthic amphipod Hyalella azteca as model chemicals and organism, respectively. Five standardized water exchange methods were applied: static, semi-static, or flow-through conditions. By measuring total (Cdiss) and freely dissolved concentrations (Cfree) of PAHs with water sampling and direct immersion solid-phase microextraction methods, respectively, we found that Cdiss in overlying water differed by a factor of up to 107 among water exchange conditions, whereas both Cdiss and Cfree in pore water did not differ by more than a factor of 2.6. Similar survival rates, growth rates, and bioaccumulation of PAHs between water exchange methods suggest that H. azteca was predominantly exposed to pore water rather than overlying water. By applying mechanistic kinetic modeling to simulate spatiotemporal concentration profiles in sediment toxicity tests, we discuss the importance of the water exchange rates and resulting temporal and spatial exposure variability for the extrapolation of laboratory sediment toxicity to field conditions, particularly for chemicals with relatively low hydrophobicity and sediments with low organic carbon content.
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Affiliation(s)
- Kyoshiro Hiki
- Health and Environmental Risk Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Fabian Christoph Fischer
- Health and Environmental Risk Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Takahiro Nishimori
- Health and Environmental Risk Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Satoshi Endo
- Health and Environmental Risk Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Haruna Watanabe
- Health and Environmental Risk Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Hiroshi Yamamoto
- Health and Environmental Risk Division, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
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Wang S, Lao W, Li H, Guo L, You J. Assessing bioaccumulation potential of sediment associated fipronil degradates in oligochaete Lumbriculus variegatus based on passive sampler measured bioavailable concentration. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 863:160514. [PMID: 36442630 DOI: 10.1016/j.scitotenv.2022.160514] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 06/16/2023]
Abstract
The degradates of fipronil have equivalent or even more toxicity to non-target aquatic invertebrates. To assess their environmental risks, information of bioaccumulation is required. Currently, little is known about the bioaccumulative property of fipronil degradates in sediment, while it is well known that passive sampler may measure bioavailable concentration (Cfree) which links with the environmental effect more tightly than the total environment concentration. The goal of the present study was to characterize bioaccumulation potential in oligochaete Lumbriculus variegatus for a fipronil degradate sulfide. The sediment organic carbon-water partition coefficient (KOC) was measured with polymethyl methacrylate (PMMA) film passive sampler, and KOC was used to bridge the gap between biota-sediment accumulation factor (BSAF) and bioconcentration factor (BCF). The bioavailable concentration (Cfree)-based KOC values were 5371 ± 152 and 5013 ± 152 (mL/g OC) for fipronil sulfide (FSI) and sulfone (FSO), respectively. Since the two fipronil degradates were produced continuously in sediment by the parent compound, the time-weighted-average (TWA) concentration of FSI in the sediment was estimated from a bioassay with L. variegatus to calculate BSAF value (0.581 ± 0.211 g OC/g lipid) and BCF (3046 ± 1103 or log 3.48 ± 0.16 mL/g). This approach is able to estimate the Cfree-based KOC and BCF values of fipronil degradate in sediment with ongoing degradation of the parent compound.
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Affiliation(s)
- Shunhui Wang
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, China, 511443; State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China, 610500.
| | - Wenjian Lao
- Southern California Coast Water Research Project Authority, Costa Mesa, California, United States, 92626
| | - Huizhen Li
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, China, 511443.
| | - Liang Guo
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, China, 610500
| | - Jing You
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou, China, 511443
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11
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Bako CM, Martinez A, Marek RF, Hornbuckle KC, Schnoor JL, Mattes TE. Lab-scale biodegradation assay using passive samplers to determine microorganisms' ability to reduce polychlorinated biphenyl (PCB) volatilization from contaminated sediment. MethodsX 2023; 10:102039. [PMID: 36798837 PMCID: PMC9926300 DOI: 10.1016/j.mex.2023.102039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 01/22/2023] [Indexed: 01/27/2023] Open
Abstract
Many PCB-degrading aerobes have been identified which may serve as bioaugmentation strains for aerobic, in situ bioremediation or in combination with dredging operations. The present work describes a lab-scale PCB biodegradation assay which can be used to screen potential bioaugmentation strains or consortia for their ability to decrease PCB mass flux from contaminated sediment to air through biodegradation of freely dissolved PCBs that have desorbed from sediment particles. The assay uses two types of passive samplers to simultaneously measure PCB mass that is freely dissolved in aqueous solution and PCB mass that has volatilized to the headspace of the bioreactor. Using this approach, relative comparisons of PCB mass accumulated in passive samplers between bioaugmented treatments and controls allow for practical assessment of a microbial strain's ability to reduce both freely dissolved and vapor phase PCB concentrations. The method is designed to be conducted using aliquots of homogenized, well-characterized, PCB-contaminated sediment gathered from a field site. This work details the experimental design methodology, required materials, bioreactor set-up, passive sampling, PCB-extraction, sample cleanup, and quantification protocols such that the biodegradation assay can be conducted or replicated. A step-by-step protocol is also included and annotated with photos, tips, and tricks from experienced analysts.•Relative comparisons of PCB mass accumulated in passive samplers between experimental treatments and controls allow for practical assessment of bioaugmentation strain's ability to reduce both freely dissolved and vapor phase PCB concentrations•Passive sampler preparation, deployment, PCB-extraction, cleanup procedures, and quantification are detailed step-by-step and annotated by experienced analysts.
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Affiliation(s)
- Christian M. Bako
- United States Environmental Protection Agency (US EPA) – Great Lakes National Program Office, 77W. Jackson Blvd., Chicago, IL United States, 60604
| | - Andres Martinez
- The Department of Civil & Environmental Engineering, 4105 Seamans Center for the Engineering Arts & Sciences, University of Iowa, Iowa City, IA United States, 52245
| | - Rachel F. Marek
- The Department of Civil & Environmental Engineering, 4105 Seamans Center for the Engineering Arts & Sciences, University of Iowa, Iowa City, IA United States, 52245
| | - Keri C. Hornbuckle
- The Department of Civil & Environmental Engineering, 4105 Seamans Center for the Engineering Arts & Sciences, University of Iowa, Iowa City, IA United States, 52245
| | - Jerald L. Schnoor
- The Department of Civil & Environmental Engineering, 4105 Seamans Center for the Engineering Arts & Sciences, University of Iowa, Iowa City, IA United States, 52245
| | - Timothy E. Mattes
- The Department of Civil & Environmental Engineering, 4105 Seamans Center for the Engineering Arts & Sciences, University of Iowa, Iowa City, IA United States, 52245
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12
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Bokare M, Lombard N, Magee S, Murali D, Ghosh U. Seasonal trends of PCBs in air over Washington DC reveal localized urban sources and the influence of Anacostia River. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120490. [PMID: 36273697 DOI: 10.1016/j.envpol.2022.120490] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 10/17/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Semi-volatile organic compounds like polychlorinated biphenyls (PCBs) undergo diffusive exchange flux between a water body and the overlying air. The magnitude of this exchange can be a substantial component of the overall pollutant mass balance and needs to be determined accurately to identify major pollutant sources to the water body and to plan appropriate remedies. For the PCB-impacted Anacostia River in Washington DC (USA), quantification of air-water exchange has been a major data gap. In the present study, polyethylene passive samplers were used to measure PCB concentrations in air phase at six locations in DC over a period of one year to capture spatial and seasonal variations. Concurrent water phase PCB measurements were used to quantify the direction and magnitude of air-water exchange in the Anacostia River. Two locations had nearly an order of magnitude higher air phase PCB concentrations that could be related to localized sources. Remaining four locations provided similar air phase PCB concentrations that averaged from 270 ± 44 pg/m3 (summer) to 32 ± 4.3 pg/m3 (winter). ∑PCB water-air exchange fluxes were positive across all seasons, with net PCB volatilization of 180 ± 19 g/year from the surface water. Volatilization rate was an order of magnitude lower than previously estimated from a fate and transport model. PCB load from atmospheric deposition based on previous studies in this watershed was an order of magnitude lower than the volatilization rate. Results refuted a long-standing understanding of the air phase serving as a source of PCBs to the river as per the currently approved Total Maximum Daily Load assessment. The study demonstrates the utility of passive air phase measurements in delineating local terrestrial sources of pollution as well as providing estimates for air-water exchange to complete a robust mass balance for semi-volatile pollutants in an urban river.
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Affiliation(s)
- Mandar Bokare
- Dept. of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, 21250, USA
| | - Nathalie Lombard
- Dept. of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, 21250, USA
| | - Samuel Magee
- Dept. of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, 21250, USA
| | - Dev Murali
- Washington DC Department of Energy and Environment, 1200 First Street NE, Washington, DC, 20002, USA
| | - Upal Ghosh
- Dept. of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, 21250, USA.
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13
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Lee HJ, Jang YL, Jeong H, Jeong DY, Kim GB. Techniques for monitoring bioavailable organic pollutants in sediment: Application of poly(methyl methacrylate) as a passive sampler. MARINE POLLUTION BULLETIN 2022; 185:114271. [PMID: 36330937 DOI: 10.1016/j.marpolbul.2022.114271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/14/2022] [Accepted: 10/16/2022] [Indexed: 06/16/2023]
Abstract
A poly(methyl methacrylate) (PMMA) passive sampler was applied to harbor sediment to examine whether the substrate could be used as a tool to measure freely dissolved concentrations of contaminants. An ex situ method required at least 1 g of PMMA to detect freely dissolved polycyclic aromatic hydrocarbons (PAHs) in sediment with <100 ng/g dry weight. Two weeks were sufficient to reach equilibrium under 180 rpm for PAHs with a molar volume of <250 cm3/mol. For the in situ method, a deployment time of four months was sufficient to measure PAHs with a molar volume up to 250 cm3/mol in the sediment bed. The PMMA passive sampler could be used to measure the bioavailable fraction of PAHs in porewater, reflecting the complex properties of sediment with strong sorption such as black carbons.
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Affiliation(s)
- Hyo Jin Lee
- Marine Environmental Impact Assessment Center, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Yu Lee Jang
- Oil and POPs Research Group, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea
| | - Haejin Jeong
- Korean Seas Geosystem Research Unit, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea
| | - Da Yeong Jeong
- Department of Marine Environmental Engineering, Gyeongsang National University, Tongyeong 53064, Republic of Korea
| | - Gi Beum Kim
- Department of Marine Environmental Engineering, Gyeongsang National University, Tongyeong 53064, Republic of Korea; College of Marine Science, The Institute of Marine Industry, Gyeongsang National University, Tongyeong 53064, Republic of Korea.
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14
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Prossner KM, Vadas GG, Harvey E, Unger MA. A novel antibody-based biosensor method for the rapid measurement of PAH contamination in oysters. ENVIRONMENTAL TECHNOLOGY & INNOVATION 2022; 28:102567. [PMID: 36204483 PMCID: PMC9531917 DOI: 10.1016/j.eti.2022.102567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Conventional PAH analytical methods are time-consuming and expensive, limiting their utility in time sensitive events (i.e. oil spills and floods) or for widespread environmental monitoring. Unreliable and inefficient screening methods intended to prioritize samples for more extensive analyses exacerbate the issue. Antibody-based biosensor technology was implemented as a quantitative screening method to measure total PAH concentration in adult oysters (Crassostrea virginica) - a well-known bioindicator species with ecological and commercial significance. Individual oysters were analyzed throughout the historically polluted Elizabeth River watershed (Virginia, USA). Significant positive association was observed between biosensor and GC-MS measurements that persisted when the method was calibrated for different regulatory subsets of PAHs. Mapping of PAH concentrations in oysters throughout the watershed demonstrates the utility of this technology for environmental monitoring. Through a novel extension of equilibrium partitioning, biosensor technology shows promise as a cost-effective analysis to rapidly predict whole animal exposure to better assess human health risk as well as improve monitoring efforts.
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15
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Gardiner C, Robuck A, Becanova J, Cantwell M, Kaserzon S, Katz D, Mueller J, Lohmann R. Field Validation of a Novel Passive Sampler for Dissolved PFAS in Surface Waters. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:2375-2385. [PMID: 35833595 PMCID: PMC9558079 DOI: 10.1002/etc.5431] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/28/2022] [Accepted: 06/30/2022] [Indexed: 05/20/2023]
Abstract
Numerous per- and polyfluoroalkyl substances (PFAS) are of growing concern worldwide due to their ubiquitous presence, bioaccumulation and adverse effects. Surface waters in the United States have displayed elevated concentrations of PFAS, but so far discrete water sampling has been the commonly applied sampling approach. In the present study we field-tested a novel integrative passive sampler, a microporous polyethylene tube, and derived sampling rates (Rs ) for nine PFAS in surface waters. Three sampling campaigns were conducted, deploying polyethylene tube passive samplers in the effluent of two wastewater treatment plant (WWTP) effluents and across Narragansett Bay (Rhode Island, USA) for 1 month each in 2017 and 2018. Passive samplers exhibited linear uptake of PFAS in the WWTP effluents over 16-29 days, with in situ Rs for nine PFAS ranging from 10 ml day-1 (perfluoropentanoic acid) to 29 ml day-1 (perfluorooctanesulfonic acid). Similar sampling rates of 19 ± 4.8 ml day-1 were observed in estuarine field deployments. Applying these Rs values in a different WWTP effluent predicted dissolved PFAS concentrations mostly within 50% of their observations in daily composite water samples, except for perfluorobutanoic acid (where predictions from passive samplers were 3 times greater than measured values), perfluorononanoic acid (1.9 times), perfluorodecanoic acid (1.7 times), and perfluoropentanesulfonic acid (0.1 times). These results highlight the potential use of passive samplers as measurement and assessment tools of PFAS in dynamic aquatic environments. Environ Toxicol Chem 2022;41:2375-2385. © 2022 SETAC.
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Affiliation(s)
- Christine Gardiner
- Graduate School of Oceanography, University of Rhode Island, 215 South Ferry Rd, Narragansett, 02882 RI, USA
| | - Anna Robuck
- Graduate School of Oceanography, University of Rhode Island, 215 South Ferry Rd, Narragansett, 02882 RI, USA
| | - Jitka Becanova
- Graduate School of Oceanography, University of Rhode Island, 215 South Ferry Rd, Narragansett, 02882 RI, USA
| | - Mark Cantwell
- Atlantic Coastal Environmental Sciences Division, U.S. Environmental Protection Agency, Narragansett, RI 02882, USA
| | - Sarit Kaserzon
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Brisbane, Australia
| | - David Katz
- Atlantic Coastal Environmental Sciences Division, U.S. Environmental Protection Agency, Narragansett, RI 02882, USA
| | - Jochen Mueller
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Brisbane, Australia
| | - Rainer Lohmann
- Graduate School of Oceanography, University of Rhode Island, 215 South Ferry Rd, Narragansett, 02882 RI, USA
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16
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Washburn SJ, Damond J, Sanders JP, Gilmour CC, Ghosh U. Uptake Mechanisms of a Novel, Activated Carbon-Based Equilibrium Passive Sampler for Estimating Porewater Methylmercury. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:2052-2064. [PMID: 35698924 PMCID: PMC9420783 DOI: 10.1002/etc.5406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/25/2021] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
We describe the validation of a novel polymeric equilibrium passive sampler comprised of agarose gel with embedded activated carbon particles (ag+AC), to estimate aqueous monomethylmercury (MeHg) concentrations. Sampler behavior was tested using a combination of idealized media and realistic sediment microcosms. Isotherm bottle experiments with ag+AC polymers were conducted to constrain partitioning to these materials by various environmentally relevant species of MeHg bound to dissolved organic matter (MeHgDOM) across a range of sizes and character. Log of partitioning coefficients for passive samplers (Kps ) ranged from 1.98 ± 0.09 for MeHg bound to Suwannee River humic acid to 3.15 ± 0.05 for MeHg complexed with Upper Mississippi River natural organic matter. Reversible equilibrium exchange of environmentally relevant MeHg species was demonstrated through a series of dual isotope-labeled exchange experiments. Isotopically labeled MeHgDOM species approached equilibrium in the samplers over 14 days, while mass balance was maintained, providing strong evidence that the ag+AC polymer material is capable of equilibrium measurements of environmentally relevant MeHg species within a reasonable deployment time frame. Samplers deployed across the sediment-water interface of sediment microcosms estimated both overlying water and porewater MeHg concentrations within a factor of 2 to 4 of measured values, based on the average measured Kps values for species of MeHg bound to natural organic matter in the isotherm experiments. Taken together, our results indicate that ag+AC polymers, used as equilibrium samplers, can provide accurate MeHg estimations across many site chemistries, with a simple back-calculation based on a standardized Kps. Environ Toxicol Chem 2022;41:2052-2064. © 2022 SETAC.
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Affiliation(s)
- Spencer J. Washburn
- Smithsonian Environmental Research Center, 647 Contees
Wharf Road, Edgewater, Maryland 21037, United States
| | - Jada Damond
- Department of Chemical, Biochemical, and Environmental
Engineering University of Maryland Baltimore County, 5200 Westland Blvd., Baltimore,
Maryland 21250, United States
| | - James P. Sanders
- US Environmental Protection Agency, Office of Pollution
Prevention and Toxics, Washington, DC 20460, United States
| | - Cynthia C. Gilmour
- Smithsonian Environmental Research Center, 647 Contees
Wharf Road, Edgewater, Maryland 21037, United States
| | - Upal Ghosh
- Department of Chemical, Biochemical, and Environmental
Engineering University of Maryland Baltimore County, 5200 Westland Blvd., Baltimore,
Maryland 21250, United States
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17
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Lotufo GR, Michalsen MM, Reible DD, Gschwend PM, Ghosh U, Kennedy AJ, Kerns KM, Rakowska MI, Odetayo A, MacFarlane JK, Yan S, Bokare M. Interlaboratory Study of Polyethylene and Polydimethylsiloxane Polymeric Samplers for Ex Situ Measurement of Freely Dissolved Hydrophobic Organic Compounds in Sediment Porewater. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:1885-1902. [PMID: 35512673 PMCID: PMC9545451 DOI: 10.1002/etc.5356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/19/2021] [Accepted: 05/02/2022] [Indexed: 05/04/2023]
Abstract
We evaluated the precision and accuracy of multilaboratory measurements for determining freely dissolved concentrations (Cfree ) of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in sediment porewater using polydimethylsiloxane (PDMS) and low-density polyethylene (LDPE) polymeric samplers. Four laboratories exposed performance reference compound (PRC) preloaded polymers to actively mixed and static ex situ sediment for approximately 1 month; two laboratories had longer exposures (2 and 3 months). For Cfree results, intralaboratory precision was high for single compounds (coefficient of variation 50% or less), and for most PAHs and PCBs interlaboratory variability was low (magnitude of difference was a factor of 2 or less) across polymers and exposure methods. Variability was higher for the most hydrophobic PAHs and PCBs, which were present at low concentrations and required larger PRC-based corrections, and also for naphthalene, likely due to differential volatilization losses between laboratories. Overall, intra- and interlaboratory variability between methods (PDMS vs. LDPE, actively mixed vs. static exposures) was low. The results that showed Cfree polymer equilibrium was achieved in approximately 1 month during active exposures, suggesting that the use of PRCs may be avoided for ex situ analysis using comparable active exposure; however, such ex situ testing may not reflect field conditions. Polymer-derived Cfree concentrations for most PCBs and PAHs were on average within a factor of 2 compared with concentrations in isolated porewater, which were directly measured by one laboratory; difference factors of up to 6 were observed for naphthalene and the most hydrophobic PAHs and PCBs. The Cfree results were similar for academic and private sector laboratories. The accuracy and precision that we demonstrate for determination of Cfree using polymer sampling are anticipated to increase regulatory acceptance and confidence in use of the method. Environ Toxicol Chem 2022;41:1885-1902. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.
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Affiliation(s)
- Guilherme R. Lotufo
- Environmental Laboratory, US Army Engineer Research and Development CenterVicksburgMississippiUSA
| | - Mandy M. Michalsen
- Environmental Laboratory, US Army Engineer Research and Development CenterVicksburgMississippiUSA
| | - Danny D. Reible
- Department of Civil, Environmental, and Construction EngineeringTexas Tech UniversityLubbockTexasUSA
| | - Philip M. Gschwend
- Department of Civil and Environmental EngineeringMassachusetts Institute of TechnologyCambridgeMassachusettsUSA
| | - Upal Ghosh
- Department of Chemical, Biochemical, and Environmental EngineeringUniversity of Maryland Baltimore CountyBaltimoreMarylandUSA
| | - Alan J. Kennedy
- Environmental Laboratory, US Army Engineer Research and Development CenterVicksburgMississippiUSA
| | | | - Magdalena I. Rakowska
- Department of Civil, Environmental, and Construction EngineeringTexas Tech UniversityLubbockTexasUSA
| | - Adesewa Odetayo
- Department of Civil, Environmental, and Construction EngineeringTexas Tech UniversityLubbockTexasUSA
| | - John K. MacFarlane
- Department of Civil and Environmental EngineeringMassachusetts Institute of TechnologyCambridgeMassachusettsUSA
| | - Songjing Yan
- Department of Chemical, Biochemical, and Environmental EngineeringUniversity of Maryland Baltimore CountyBaltimoreMarylandUSA
| | - Mandar Bokare
- Department of Chemical, Biochemical, and Environmental EngineeringUniversity of Maryland Baltimore CountyBaltimoreMarylandUSA
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18
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Yan S, Bokare M, Ghosh U. Equilibrium Porewater Measurement of PCBs and PAHs Using Direct Water Extraction and Comparison with Passive Sampling. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10020-10029. [PMID: 35759616 PMCID: PMC9302434 DOI: 10.1021/acs.est.2c00312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The freely dissolved concentration of hydrophobic pollutants in sediment porewater (Cpw) is a critical driver for exposure to aquatic organisms, bioaccumulation, toxicity, and flux across interfaces. In this research, we compared direct porewater extraction and passive sampling for Cpw measurements of a range of PCBs and PAHs in field-collected sediments. The direct water extraction method provided accurate quantification of Cpw for low to moderately hydrophobic PCB and PAH compounds (log Kow < 6.5) that compared well with independent measurements performed using four passive sampling methods. Direct water extraction was adequate to assess narcosis toxicity of PAHs to benthic organisms that is driven by the concentrations of low to moderately hydrophobic PAHs (naphthalene to chrysene), even for a hypothetical sediment that had a tenth of the PAH concentrations of the study sediments and was assessed to be nontoxic. Prediction of PCB bioaccumulation in benthic organisms agreed within 50% for all measurement methods, but it was apparent that for less contaminated sediments, the direct water extraction method would likely have detection limit challenges, especially for the strongly hydrophobic PCBs. To address the uncertainty of the Cpw measurement of the strongly hydrophobic compounds and naphthalene, a new extrapolation approach is demonstrated that can be applicable for both direct water extraction and passive sampling methods.
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19
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Fuller N, Anzalone SE, Huff Hartz KE, Whitledge GW, Acuña S, Magnuson JT, Schlenk D, Lydy MJ. Bioavailability of legacy and current-use pesticides in juvenile Chinook salmon habitat of the Sacramento River watershed: Importance of sediment characteristics and extraction techniques. CHEMOSPHERE 2022; 298:134174. [PMID: 35276115 DOI: 10.1016/j.chemosphere.2022.134174] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 02/22/2022] [Accepted: 02/27/2022] [Indexed: 06/14/2023]
Abstract
The Sacramento River watershed, California, provides important rearing and migratory habitat for several species of conservation concern. Studies have suggested significant benefits for juvenile fish rearing in floodplain habitats of the watershed compared to the mainstem Sacramento River. However, the potential for contaminant exposure in each of these two habitats is poorly understood. Consequently, the present study aimed to determine the distribution and occurrence of bioavailable pesticides within two known salmon habitats using a suite of approaches including exhaustive chemical extraction, single-point Tenax extraction (SPTE) and ex situ passive sampling. Sediment samples were collected from sites within both habitats twice annually in 2019 and 2020, with inundation of the floodplain and high flows for both areas in 2019 and low flow conditions observed in 2020. Sediment characteristics including total organic carbon, black carbon and particle size distribution were determined to elucidate the influence of physical characteristics on pesticide distribution. Using exhaustive extractions, significantly greater sediment concentrations of organochlorines were observed in the floodplain compared to the Sacramento River in both years, with bioaccessible organochlorine concentrations also significantly greater in the floodplain (ANOVA, p < 0.05). Using both SPTEs and exhaustive extractions, significantly fewer pesticides were detected across both sites under low flow conditions as compared to high flow conditions (Poisson regression, p < 0.05). Sediment characteristics including percent fines and black carbon had significant positive relationships with total and bioaccessible pyrethroid and organochlorine concentrations. Fewer analytes were detected using low-density polyethylene (LDPE) passive samplers as compared to SPTEs, suggesting greater sensitivity of the Tenax technique for bioavailability assessments. These findings suggest that threatened juvenile fish populations rearing on the floodplain may have greater exposure to organochlorines than fish inhabiting adjacent riverine habitats, and that pesticide exposure of resident biota may be exacerbated during high-flow conditions.
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Affiliation(s)
- Neil Fuller
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA
| | - Sara E Anzalone
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA
| | - Kara E Huff Hartz
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA
| | - Gregory W Whitledge
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA
| | - Shawn Acuña
- Metropolitan Water District of Southern California, Sacramento, CA, 95814, USA
| | - Jason T Magnuson
- Department of Environmental Sciences, University of California Riverside, Riverside, CA, 92521, USA
| | - Daniel Schlenk
- Department of Environmental Sciences, University of California Riverside, Riverside, CA, 92521, USA
| | - Michael J Lydy
- Center for Fisheries, Aquaculture, and Aquatic Sciences, Department of Zoology, Southern Illinois University, Carbondale, Illinois, 62901, USA.
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20
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Jonker MTO. Polyethylene-Water and Polydimethylsiloxane-Water Partition Coefficients for Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls: Influence of Polymer Source and Proposed Best Available Values. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:1370-1380. [PMID: 35322897 PMCID: PMC9325362 DOI: 10.1002/etc.5333] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/31/2021] [Accepted: 03/19/2022] [Indexed: 05/28/2023]
Abstract
For most passive sampling applications, the availability of accurate passive sampler-water partition coefficients (Kp-w ) is of key importance. Unfortunately, a huge variability exists in literature Kp-w values, in particular for hydrophobic chemicals such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). This variability is a major source of concern in the passive sampling community, which would benefit from high-quality Kp-w data. Hence, in the present study "best available" PAH and PCB Kp-w values are proposed for the two most often applied passive sampling materials, that is, low-density polyethylene and polydimethylsiloxane (PDMS), based on (1) a critical assessment of existing literature data, and (2) new Kp-w determinations for polyethylene and PDMS, with both polymers coming in six different versions (suppliers, thicknesses). The experimental results indicated that Kp-w values for PDMS are independent of the source, thus allowing straightforward standardization. In contrast, Kp-w values for polyethylene from different sources differed by up to 30%. Defining best available Kp-w values for this polymer therefore may require standardization of the polymer source. Application of the proposed best available Kp-w values will substantially improve the accuracy of freely dissolved concentration results by users and the potential for comparisons across laboratories. Environ Toxicol Chem 2022;41:1370-1380. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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21
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Smith AV, Shen X, Garza-Rubalcava U, Gardiner W, Reible D. In Situ Passive Sampling to Monitor Long Term Cap Effectiveness at a Tidally Influenced Shoreline. TOXICS 2022; 10:toxics10030106. [PMID: 35324732 PMCID: PMC8948705 DOI: 10.3390/toxics10030106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/19/2022] [Accepted: 02/22/2022] [Indexed: 11/22/2022]
Abstract
Polydimethylsiloxane solid-phase microextraction passive samplers were used to evaluate long-term performance of a sand/gravel cap placed in 2005 in a tidally influenced shoreline in Puget Sound to reduce polycyclic aromatic hydrocarbon (PAH) transport into overlying surface water. Sampling in both 2010 and 2018 measured porewater concentrations of <1 ng/L total PAHs in the cap layer. d-PAH performance reference compounds were used to evaluate the extent of equilibration of the contaminants onto the samplers and to estimate net upwelling velocities through a mass-transfer model. The upwelling velocities were used to predict long-term migration of selected PAHs through the cap, showing that the cap is expected to continue being effective at limiting exposure of contaminants at the cap−water interface.
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Affiliation(s)
- Alex V. Smith
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA;
| | - Xiaolong Shen
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA; (X.S.); (U.G.-R.)
| | - Uriel Garza-Rubalcava
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA; (X.S.); (U.G.-R.)
| | - William Gardiner
- U.S. Army Corps of Engineers, Seattle District Seattle, Washington, DC 98134, USA;
| | - Danny Reible
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA;
- Correspondence:
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Burgess RM, Grossman S, Ball G, Kady T, Sprenger M, Nevshehirlian S. Evaluating sedimentary PAH bioavailability based on equilibrium partitioning and passive sampling at the Dover Gas Light Superfund Site (Dover, Delaware, USA). INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2021; 17:1215-1228. [PMID: 33710767 PMCID: PMC8823283 DOI: 10.1002/ieam.4409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/23/2020] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
From 1859 to 1948, the Dover Gas Light plant produced combustible gas for industrial, commercial, and residential applications using pine resin, coking coal, oil, and wood, and finally, a coal-gas process. Waste coal tar was discharged into the St. Jones River in Dover, Delaware (USA), via a ditch and culvert and, following plant closure in the 1940s, through groundwater flow from structures buried on the site. By the end of the 20th century, polycyclic aromatic hydrocarbon (PAH) contamination of the sediments in the St. Jones River was suspected to have occurred, and state and federal agencies initiated environmental assessments of the newly designated Superfund site. The current study investigated the spatial distributions of total PAHs in St. Jones River sediments adjacent to the site and evaluated their bioavailability. In 2017, 34 sediment cores were collected, sectioned, and analyzed using an on-site fluorometric screening technology indicating total PAH sediment concentrations ranging from 0.1 to 15 000 mg/kg (wet). A subset of cores involving 20 samples of various depths was selected and further analyzed by conventional GC/MS analysis for 16 parent PAHs. In addition, a 34-day in situ deployment of polyethylene passive samplers was performed to measure vertical bioavailability profiles of parent PAHs in sediments at three locations and overlying waters at four stations. Freely dissolved concentrations (C free ) of total PAHs were estimated based on equilibrium partitioning (EqP) of the GC/MS results and the passive sampling findings. C free values were used to calculate acute and chronic toxic units ranging from 1.4 to 56, based on EqP and 1.3 to 15 based on passive sampling. For six samples where comparative data were available, EqP calculations overestimated bioavailability by < 2- to 54-fold. Combining rapid field measurements with more accurate analyses of sediment concentrations and bioavailability in a tiered framework supported a time-efficient and cost-effective site investigation. Integr Environ Assess Manag 2021;17:1215-1228. © Published 2021. This article is a U.S. Government work and is in the public domain in the USA.
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Affiliation(s)
- Robert M Burgess
- US EPA ORD, CEMM, Atlantic Coastal Environmental Sciences Division, Narragansett, Rhode Island, USA
| | - Scott Grossman
- US EPA OLEM, OSRTI, Environmental Response Team, Edison, New Jersey, USA
| | - Gerald Ball
- US EPA OLEM, OSRTI, Environmental Response Team, Edison, New Jersey, USA
| | - Thomas Kady
- US EPA OLEM, OSRTI, Environmental Response Team, Edison, New Jersey, USA
| | - Mark Sprenger
- US EPA OLEM, OSRTI, Environmental Response Team, Edison, New Jersey, USA
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23
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Brennan AA, Mount DR, Johnson NW. Stochastic Framework for Addressing Chemical Partitioning and Bioavailability in Contaminated Sediment Assessment and Management. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:10.1021/acs.est.1c01537. [PMID: 34310120 PMCID: PMC11137493 DOI: 10.1021/acs.est.1c01537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Passive sampling to quantify net partitioning of hydrophobic organic contaminants between the porewater and solid phase has advanced risk management for contaminated sediments. Direct porewater (Cfree) measures represent the best way to predict adverse effects to biota. However, when the need arises to convert between solid-phase concentration (Ctotal) and Cfree, a wide variation in observed sediment-porewater partition coefficients (KTOC) is observed due to intractable complexities in binding phases. We propose a stochastic framework in which a given Ctotal is mapped to an estimated range of Cfree through variability in passive sampling-derived KTOC relationships. This mapping can be used to pair estimated Cfree with biological effects data or inversely to translate a measured or assumed Cfree to an estimated Ctotal. We apply the framework to both an effects threshold for polycyclic aromatic hydrocarbon (PAH) toxicity and an aggregate adverse impact on an assemblage of species. The stochastic framework is based on a "bioavailability ratio" (BR), which reflects the extent to which potency-weighted, aggregate PAH partitioning to the solid-phase is greater than that predicted by default, KOW-based KTOC values. Along a continuum of Ctotal, we use the BR to derive an estimate for the probability that Cfree will exceed a threshold. By explicitly describing the variability of KTOC and BR, estimates of risk posed by sediment-associated contaminants can be more transparent and nuanced.
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Affiliation(s)
- Amanda A Brennan
- Water Resources Science, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - David R Mount
- Center for Computational Toxicology and Exposure, Office of Research and Development, US Environmental Protection Agency, Duluth, Minnesota 55804, United States
| | - Nathan W Johnson
- Water Resources Science, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
- Department of Civil Engineering, University of Minnesota, Duluth, Duluth, Minnesota 55812, United States
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24
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Vázquez OA, Rahman MS. An ecotoxicological approach to microplastics on terrestrial and aquatic organisms: A systematic review in assessment, monitoring and biological impact. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 84:103615. [PMID: 33607259 DOI: 10.1016/j.etap.2021.103615] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 02/03/2021] [Accepted: 02/11/2021] [Indexed: 05/06/2023]
Abstract
Marine and land plastic debris biodegrades at micro- and nanoscales through progressive fragmentation. Oceanographic model studies confirm the presence of up to ∼2.41 million tons of microplastics across the Atlantic, Pacific, and Indian subtropical gyres. Microplastics distribute from primary (e.g., exfoliating cleansers) and secondary (e.g., chemical deterioration) sources in the environment. This anthropogenic phenomenon poses a threat to the flora and fauna of terrestrial and aquatic ecosystems as ingestion and entanglement cases increase over time. This review focuses on the impact of microplastics across taxa at suggested environmentally relevant concentrations, and advances the groundwork for future ecotoxicological-based research on microplastics including the main points: (i) adhesion of chemical pollutants (e.g., PCBs); (ii) biological effects (e.g., bioaccumulation, biomagnification, biotransportation) in terrestrial and aquatic organisms; (iii) physico-chemical properties (e.g., polybrominated diphenyl ethers) and biodegradation pathways in the environment (e.g., chemical stress, heat stress); and (iv) an ecotoxicological prospect for optimized impact assessments.
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Affiliation(s)
- Omar A Vázquez
- Biochemistry and Molecular Biology Program, University of Texas Rio Grande Valley, Brownsville, TX, USA
| | - Md Saydur Rahman
- Biochemistry and Molecular Biology Program, University of Texas Rio Grande Valley, Brownsville, TX, USA; School of Earth, Environmental, and Marine Sciences, University of Texas Rio Grande Valley, Brownsville, TX, USA.
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25
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Conder J, Jalalizadeh M, Luo H, Bess A, Sande S, Healey M, Unger MA. Evaluation of a rapid biosensor tool for measuring PAH availability in petroleum-impacted sediment. ENVIRONMENTAL ADVANCES 2021; 3:100032. [PMID: 34337585 PMCID: PMC8323639 DOI: 10.1016/j.envadv.2021.100032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Decades of research have shown that the concentration of freely dissolved PAH (Cfree) in sediment correlates with PAH bioavailability and toxicity to aquatic organisms. Passive sampling techniques and models have been used for measuring and predicting Cfree, respectively, but these techniques require weeks for analytical chemical measurements and data evaluation. This study evaluated the performance of a portable, field-deployable antibody-based PAH biosensor method that can provide measurements of PAH Cfree within a matter of minutes using a small volume of mechanically-extracted sediment porewater. Four sediments with a wide range of PAHs (ΣPAH 2.4 to 307 mg/kg) derived from petroleum, creosote, and mixed urban sources, were analyzed via three methods: 1) bulk chemistry analysis; 2) ex situ sediment passive sampling; and 3) biosensor analysis of mechanically-extracted sediment porewater. Mean ΣPAH Cfree determined by the biosensor for the four sediments (3.1 to 55 μg/L) were within a factor of 1.1 (on average) compared to values determined by the passive samplers (2.0 to 52 μg/L). All mean values differed by a factor of 3 or less. The biosensor was also useful in identifying sediments that are likely to be non-toxic to benthic invertebrates. In two of the four sediments, biosensor results of 20 and 55 μg/L exceeded a potential risk-based screening level of 10 μg/L, indicating toxicity could not be ruled out. PAH Toxic Units (ΣTU) measured in these two sediments using the passive sampler Cfree results were also greater than the ΣTU threshold of 1 (6.7 and 5.8, respectively), confirming the conclusions reached with the biosensor. In contrast, the other two sediments were identified as non-toxic by both the biosensor (3.1 and 4.3 μg/L) and the passive sampler (ΣTUs of 0.34 and 0.039). These results indicate that the biosensor is a promising tool for rapid screening of sediments potentially-impacted with PAHs.
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Affiliation(s)
- Jason Conder
- Geosyntec Consultants, Huntington Beach, CA, United States
- Corresponding author. (J. Conder)
| | | | - Hong Luo
- Chevron Energy Technology Company, Houston, TX, United States
| | - Amanda Bess
- Chevron Energy Technology Company, Houston, TX, United States
| | | | | | - Michael A. Unger
- Virginia Institute of Marine Science, William & Mary, Gloucester Point, VA, United States
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26
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Khawar M, Nabi D. Relook on the Linear Free Energy Relationships Describing the Partitioning Behavior of Diverse Chemicals for Polyethylene Water Passive Samplers. ACS OMEGA 2021; 6:5221-5232. [PMID: 33681563 PMCID: PMC7931192 DOI: 10.1021/acsomega.0c05179] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 02/05/2021] [Indexed: 05/24/2023]
Abstract
Over the past 3 decades, low-density polyethylene (PE) passive sampling devices have been widely used to scout organic chemicals in air, water, sediments, and biotic phases. Experimental partition coefficient data, required to calculate the concentrations in environmental compartments, are not widely available. In this study, we developed and rigorously evaluated linear free energy relationships (LFERs) to predict the partition coefficient between the PE and the water phase (log K pe-w). Poly-parameter (pp) LFERs based on Abraham solute parameters performed better (root-mean-square error, rmse = 0.333-0.350 log unit) in predicting log K pe-w compared to the two one-parameter (op) LFERs built on n-hexadecane-water and octanol-water partition coefficients (rmse = 0.41-0.42 log unit), indicating that one parameter is not able to account for all types of interactions experienced by a chemical during PE-water exchange. Dimensionality analyses show that the calibration dataset used to train pp-LFERs fulfills all the requirements to obtain a robust model for log K pe-w. Van der Waals interactions of the molecule tend to favor the PE phase, and polar interactions of the molecule favor the water phase. The PE phase is the most sensitive to polarizable chemicals compared to other commonly used passive sampling polymeric phases such as polydimethylsiloxane, polyoxymethylene, and polyacrylate. For op-LFERs, the PE phase is better represented by the hexadecane phase than by the octanol phase. A computational method based on the conductor-like screening model for real solvents theory did good job in estimating log K pe-w for chemicals that were neither very hydrophobic nor very hydrophilic in nature. Our models can be used to reliably predict the log K pe-w values of simple neutral organic chemicals. This study provides insights into the partitioning behavior of PE samplers compared to other commonly used passive samplers.
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Affiliation(s)
- Muhammad
Irfan Khawar
- Institute
of Environmental Sciences and Engineering (IESE), National University of Sciences and Technology (NUST), H-12, Islamabad 48000, Pakistan
| | - Deedar Nabi
- Institute
of Environmental Sciences and Engineering (IESE), National University of Sciences and Technology (NUST), H-12, Islamabad 48000, Pakistan
- Bigelow
Laboratory for Ocean Sciences, 60 Bigelow Dr, East Boothbay, Maine 04544, United
States
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27
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Allan IJ, Raffard V, Kringstad A, Næs K. Assessment of marine sediment remediation efficiency with SPME-based passive sampling measurement. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:143854. [PMID: 33279202 DOI: 10.1016/j.scitotenv.2020.143854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/08/2020] [Accepted: 11/08/2020] [Indexed: 06/12/2023]
Abstract
Passive sampling has been shown to be a suitable procedure to assess the risk of contaminated sediments through the measurement of freely dissolved concentrations (CFree) and remedial actions involving amendments such as activated carbon (AC). Here we report results of the application of simple, solvent-free solid phase micro extraction methodology (SPME) to assess the performance of different materials for the remediation of selected Norwegian harbour sediments contaminated with polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). AC amendments enabled a reduction of the availability of PAHs and/or PCBs by a factor of ten to over one hundred in Aker Brygge sediments (Oslo) and sediments from Elkembukta, impacted by industrial emissions of PAHs with/from coal tar pitch. Another material, anthracite, slightly less effective in this set of experiment than AC, showed nonetheless great promise as capping material. The SPME data are put in perspective with equilibrium measurements of CFree for PAHs and organochlorines with silicone rubber in other Elkembukta sediments collected in the vicinity of those used for the remediation experiments. A reduction of sediment Cfree for pyrene, benzo[a]pyrene and benzo[ghi]perylene in inner Elkembukta sediment from on average 407, 6.3 and 0.82 ng L-1 to values of/or below 1.3, 0.15 and 0.076 ng L-1, respectively can be expected upon remediation with AC. For the outer, less contaminated Elkembukta sediment, Cfree would reduce from 36, 0.81 and 0.13 ng L-1 to value of or below 0.06, 0.03 and 0.005 ng L-1 for these three compounds, respectively. Differences in pattern of PAH and organochlorine contamination of inner and outer Elkembukta sediments are discussed.
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Affiliation(s)
- Ian J Allan
- Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway.
| | - Violette Raffard
- Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway
| | - Alfhild Kringstad
- Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway
| | - Kristoffer Næs
- Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, NO-0349 Oslo, Norway
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28
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Jonker MTO. Effects of sediment manipulation on freely dissolved concentrations of hydrophobic organic chemicals. CHEMOSPHERE 2021; 265:128694. [PMID: 33129559 DOI: 10.1016/j.chemosphere.2020.128694] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 10/10/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
The freely dissolved concentration (Cfree) of hydrophobic organic chemicals (HOCs) in pore water is an important parameter in the risk assessment and management of contaminated sediments and soils. It can be determined most conveniently through ex situ passive sampling, i.e., in the laboratory. For this purpose, samples are taken from the field and transported to the laboratory, where they are stored and possibly manipulated by sieving, freezing, drying and/or grinding. Although the objective of ex situ passive sampling often is to determine a Cfree that reflects the metric under in situ conditions, hardly any information is available on possible effects of sample manipulation. Hence, the present study investigated the impact of freezing, freeze-drying, and grinding on Cfree of HOCs in field sediments, as determined with solid phase microextraction (SPME). Freezing increased the Cfree of 3- and 4-ring polycyclic aromatic hydrocarbons (PAHs) with up to a factor of 4, whereas for 5- and 6-ring PAHs hardly any effects were observed. Generally, additional freeze-drying did not further increase Cfree, but subsequently grinding the samples (further) increased Cfree of all PAHs with up to a factor of 4, leading to an overall maximum observed increase in Cfree of a factor of 16. Probably, these effects are caused by a structural change in the sorption matrix, enhancing PAH availability. The results indicate that freezing, freeze-drying, and grinding prior to ex situ Cfree determinations should be avoided, as these treatments may considerably increase the Cfree of HOCs, leading to an overestimation of risks.
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Affiliation(s)
- Michiel T O Jonker
- Institute for Risk Assessment Sciences, Utrecht University; P.O. Box 80177, 3508, TD Utrecht, the Netherlands.
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29
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Fuchte HE, Schäffer A, Booij K, Smith KEC. Kinetic Passive Sampling: In Situ Calibration Using the Contaminant Mass Measured in Parallel Samplers with Different Thicknesses. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:15759-15767. [PMID: 33213141 DOI: 10.1021/acs.est.0c04437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The use of single-phase passive samplers is a common method for sampling bioavailable concentrations of hydrophobic aquatic pollutants. Often such samplers are used in the kinetic stage, and in situ calibration is necessary. Most commonly, exchange kinetics are derived from the release rates of performance reference compounds (PRCs). In this study, a complementary calibration approach was developed, in which measuring the contaminant mass ratio (CMR) from two samplers with different thicknesses allows the dissolved concentrations to be determined. This new CMR calibration was tested (1) in a laboratory experiment with defined and constant concentrations and (2) in the field, at a storm water retention site. Silicone passive samplers with different thicknesses were used to sample a range of dissolved polycyclic aromatic hydrocarbons. In the laboratory study, the concentrations derived from the CMR calibration were compared with those from water extraction and passive dosing and differences below a factor 2 were found. In the field study, CMR-derived concentrations were compared to those from PRC calibration. Here, differences ranged by only a factor 1 to 3 between both methods. These findings indicate that the CMR calibration can be applied as a stand-alone or complementary calibration method for kinetic passive sampling.
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Affiliation(s)
- Hanna E Fuchte
- Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
| | - Andreas Schäffer
- Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 210093 Nanjing, PR China
| | - Kees Booij
- Passive Sampling of Organic Compounds (PaSOC), 8821LV Kimswerd, The Netherlands
| | - Kilian E C Smith
- Institute for Environmental Research, RWTH Aachen University, 52074 Aachen, Germany
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30
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Drygiannaki I, Bejar M, Reible DD, Dawson JA, Rao B, Hayman NT, Rosen GH, Colvin MA. Assessing Biota Accumulation Due to Contamination of Sediments by Storm Water Heavy Metals. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:2475-2484. [PMID: 32845535 DOI: 10.1002/etc.4862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/08/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023]
Abstract
Evaluating sediment recontamination due to storm water discharges is important when evaluating the long-term effectiveness of sediment remediation efforts at reducing biological impacts. The bioaccumulation of the heavy metals zinc, nickel, copper, cadmium, mercury, and lead and the metalloid arsenic in a clam (Macoma nasuta) was studied in surficial sediments before and after storm water inputs from Paleta Creek, California, USA, during wet seasons in 2015 to 2016 and 2016 to 2017. The bioaccumulation was compared with bulk sediment concentrations and porewater concentrations measured by diffusion gradient in thin film devices. Significant reductions in biota accumulation and porewater concentrations were observed in samples collected after storm seasons compared with before storm seasons despite bulk sediment concentrations remaining the same or increasing. This was apparently the result of the deposition of storm water contaminants in low bioavailable forms. The bioaccumulation of all the measured contaminants showed a positive significant correlation with porewater concentrations (p < 0.1, α = 0.1) and weak or no correlations with bulk sediment concentration. In conclusion, observed bulk sediment recontamination due to storm water should not be assumed to lead directly to greater biota accumulation without bioavailability assessment. Environ Toxicol Chem 2020;39:2475-2484. © 2020 SETAC.
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Affiliation(s)
| | | | | | | | - Balaji Rao
- Texas Tech University, Lubbock, Texas, USA
| | - Nicholas T Hayman
- Naval Information Warfare Center Pacific, San Diego, California, USA
| | - Gunther H Rosen
- Naval Information Warfare Center Pacific, San Diego, California, USA
| | - Marienne A Colvin
- Naval Information Warfare Center Pacific, San Diego, California, USA
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31
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Zhu T, Chen W, Singh RP, Cui Y. Versatile in silico modeling of partition coefficients of organic compounds in polydimethylsiloxane using linear and nonlinear methods. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123012. [PMID: 32544766 DOI: 10.1016/j.jhazmat.2020.123012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/15/2020] [Accepted: 05/20/2020] [Indexed: 06/11/2023]
Abstract
Environmental fate, behavior and effects of hazardous organic compounds have recently received great attention in diverse environmental phases, including water, atmosphere, soil and sediment. Considering polydimethylsiloxane (PDMS) fibers were validated for the wide application in the determination of partition behavior in passive sampling, in this work, several in silico models were established to predict PDMS-water (KPDMS-w), PDMS-air (KPDMS-a) and PDMS-seawater partition coefficients (KPDMS-sw) of diverse chemicals. This is an attempt to combine conventional linear method and popular nonlinear algorithm for the estimation of partition coefficients between PDMS and different environmental media. All of the developed models showed satisfactory goodness-of-fit with high adjusted correlation coefficient (R2adj) and were validated to be robust, stable and predictable by various internal and external validation techniques, deriving a wide series of statistical checks. Moreover, it was found that hydrophobicity, polarizability, charge distribution and molecular size of compounds contributed significantly to the model development by interpreting the selected descriptors. Based on the broad applicability domains (ADs), the current study provides suitable tools to fill the experimental data gap for other compounds and to help researchers better understand the mechanistic basis of adsorption behavior of PDMS.
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Affiliation(s)
- Tengyi Zhu
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China.
| | - Wenxuan Chen
- School of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China
| | | | - Yanran Cui
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99354, United States
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32
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Reininghaus M, Parkerton TF, Witt G. Comparison of In Situ and Ex Situ Equilibrium Passive Sampling for Measuring Freely Dissolved Concentrations of Parent and Alkylated Polycyclic Aromatic Hydrocarbons in Sediments. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:2169-2179. [PMID: 32804440 DOI: 10.1002/etc.4849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/06/2020] [Accepted: 08/06/2020] [Indexed: 05/21/2023]
Abstract
Equilibrium passive sampling methods (EPSMs) allow quantification of freely dissolved contaminant concentrations (Cfree ) in sediment porewater. Polydimethylsiloxane (PDMS) is a convenient sampling polymer that can be equilibrated in field (in situ) or laboratory (ex situ) sediments to determine Cfree , providing reliable compound-specific PDMS-water partition coefficients (KPDMS-water ) are available. Polycyclic aromatic hydrocarbons (PAHs) are an important class of sediment contaminants comprised of parent and alkylated homologs. However, application of EPSM to alkylated PAHs is challenged by lack of KPDMS-water measurements. Our first objective was to obtain KPDMS-water for 9 alkylated PAHs and biphenyls using 3 different PDMS-coated fibers. Quantitative relationships were then established to define KPDMS-water for 18 parent and 16 alkyl PAHs included in the US Environmental Protection Agency's sediment quality benchmark method for benthic life protection based on additive toxic units. The second objective was to compare Cfree in porewater obtained using both in situ and ex situ EPSMs at 6 Baltic Sea locations. The results indicated that in situ and ex situ Cfree for alkyl PAHs generally agreed within a factor of 3. Further, all sites exhibited additive toxic units <1, indicating that PAHs pose a low risk to benthos. The results extend practical application of EPSMs for improved risk assessment and derivation of porewater-based remediation goals for PAH-contaminated sediments. Environ Toxicol Chem 2020;39:2169-2179. © 2020 SETAC.
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Affiliation(s)
- Mathias Reininghaus
- Hamburg University of Applied Sciences, Hamburg, Germany
- RWTH Aachen, Aachen, Germany
| | | | - Gesine Witt
- Hamburg University of Applied Sciences, Hamburg, Germany
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33
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Yan S, Rakowska M, Shen X, Himmer T, Irvine C, Zajac-Fay R, Eby J, Janda D, Ohannessian S, Reible DD. Bioavailability assessment in activated carbon treated coastal sediment with in situ and ex situ porewater measurements. WATER RESEARCH 2020; 185:116259. [PMID: 32798889 DOI: 10.1016/j.watres.2020.116259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 05/21/2023]
Abstract
Passive sampling and bioaccumulation assessments were used to evaluate the performance of activated carbon (AC) remediation of polychlorinated biphenyl (PCB) contaminated sediment offshore in Parcel F of the former Hunters Point Naval Shipyard (HPNS) (San Francisco, California). Two different composite AC materials, AquaGate+PAC™ (86 tons) and SediMite™ (24 tons) were placed on the sediment surface covering an area of 3200 m2. PCB tissue concentrations in the clam Macoma nasuta were reduced 75 to 80% in pilot amendment areas after 8 months and 84-87% in non-lipid normalized tissues after 14 months during in situ monitoring, confirming the effectiveness of the AC at reducing bioavailability of the PCBs. Polydimethylsiloxane (PDMS) passive samplers were applied to evaluate and monitor freely dissolved concentrations (Cfree) of PCBs in sediment porewater before AC placement (i.e., during baseline) and at 8 months, 14 months and 26 months following placement. Although AC composite materials were placed only at the surface, 80% reductions were observed to a depth of 16 cm after 8 months and up to 26 cm after 26 months in AquaGate+PAC treatment area. Total PCB porewater concentrations in surface sediments (1-6 cm) were reduced 89 and 91% in the AquaGate+PAC and SediMite areas during final sampling. Ex situ passive sampling showed porewater concentrations 2-5 times larger than in situ measurements due to the absence of hyporheic exchange in laboratory measurements and near equilibration between sediment and porewater. Estimated post placement ex situ porewater concentrations were more consistent with a model of bioaccumulation using the octanol-water partition coefficient (KOW) as a bioaccumulation factor leading to a hypothesis that the bioaccumulation factor in the deposit feeding clam is better estimated by equilibrium ex situ porewater measurements.
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Affiliation(s)
- Songjing Yan
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA
| | - Magdalena Rakowska
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA
| | - Xiaolong Shen
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA
| | | | | | | | - Jamie Eby
- Port of Oakland, Oakland, CA 94607, USA
| | - Danielle Janda
- Department of the Navy (DoN), Base Realignment and Closure Program Management Office (BRAC PMO) West, San Diego, CA 92014, USA
| | | | - Danny D Reible
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA; Department of Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock, TX 79409, USA.
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Odetayo AA, Reible DD, Acevedo-Mackey D, Price C, Thai L. Development of polyoxymethylene passive sampler for assessing air concentrations of PCBs at a confined disposal facility (CDF). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114720. [PMID: 32473506 DOI: 10.1016/j.envpol.2020.114720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/30/2020] [Accepted: 04/30/2020] [Indexed: 06/11/2023]
Abstract
In this study, 76 μm polyoxymethylene (POM) strips were evaluated as a passive air sampler (PAS) for monitoring the volatile emissions from dredged material placed in confined disposal facilities (CDF). Laboratory evaluations were used to assess the uptake kinetics, average equilibrium time, and estimate the POM-air partition coefficients (KPOM-A) of 16 PCB congeners. The uptake kinetics defined the effective averaging time for air sampling and ranged from about a week for dichlorobiphenyls to 2 weeks or more for tetra- and pentachlorobiphenyls at ∼20 °C under internal mass transfer resistance control which was applicable for Log KPOM-A < 8. The measured Log KPOM-A for PCBs ranged from 5.65 to 9.34 and exhibited an average deviation of 0.19 log unit from the theoretical value of KPOM-W/KAW. The PAS approach was then tested with a preliminary field application (n = 17) at a CDF allowing equilibration over 42 days. The field application focused on lower congener PCBs as a result of the estimated increase in KPOM-A and longer uptake times expected at the low ambient temperatures during the field study (average of 3.5 °C). Total PCB air concentrations around the CDF averaged 0.32 ng/m3 and varied according to proximity to placement of the dredged materials and predominant wind directions. Average PAS concentration of low congener number PCBs (15, 18, 20/28, 31) were compared to available high volume air sampler (HVAS) measurements. The PAS concentrations were within 20% of HVAS in the dominant north and south directions and showed similar trends as east and west HVAS samplers although PAS concentrations were as much as an order of magnitude below the west HVAS.
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Affiliation(s)
- Adesewa A Odetayo
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 911 Boston Avenue, Lubbock, TX, 79409, USA
| | - Danny D Reible
- Department of Civil, Environmental and Construction Engineering, Texas Tech University, 911 Boston Avenue, Lubbock, TX, 79409, USA.
| | - Damarys Acevedo-Mackey
- U. S Army Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS. 39180, USA
| | - Cynthia Price
- U. S Army Engineer Research and Development Center, 3909 Halls Ferry Rd., Vicksburg, MS. 39180, USA
| | - Le Thai
- U. S Army Corps of Engineers, Chicago District, USA
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Treatment of Polycyclic Aromatic Hydrocarbons in Oil Sands Process-Affected Water with a Surface Flow Treatment Wetland. ENVIRONMENTS 2020. [DOI: 10.3390/environments7090064] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study applied a passive sampling approach using low-density polyethylene passive samplers to determine the treatment efficiency of the Kearl surface flow treatment wetland for polycyclic aromatic hydrocarbons (PAHs) in Oil Sands Process-affected Waters (OSPW). Treatment efficiency was measured as concentration-reduction and mass-removal from the OSPW. The results show that the wetland’s ability to remove individual PAHs from the influent varied substantially among the PAHs investigated. Treatment efficiencies of individual PAHs ranged between essentially 0% for certain methylated PAHs (e.g., 2,6-dimethylnaphthalene) to 95% for fluoranthene. Treatment in the Kearl wetland reduced the combined total mass of all detected PAHs by 54 to 83%. This corresponded to a reduction in the concentration of total PAHs in OSPW of 56 to 82% with inflow concentrations of total PAHs ranging from 7.5 to 19.4 ng/L. The concentration of pyrene in water fell below water quality targets in the Muskeg River Interim Management Framework as a result of wetland treatment. The application of the passive samplers for toxicity assessment showed that in this study PAHs in both the influent and effluent were not expected to cause acute toxicity. Passive sampling appeared to be a useful and cost-effective method for monitoring contaminants and for determining the treatment efficiency of contaminants in the treatment wetland.
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Schmidt SN, Burgess RM. Evaluating Polymeric Sampling as a Tool for Predicting the Bioaccumulation of Polychlorinated Biphenyls by Fish and Shellfish. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:9729-9741. [PMID: 32585088 PMCID: PMC7478847 DOI: 10.1021/acs.est.9b07292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recent research has shown that polymeric sampling data generally can predict the bioaccumulation of hydrophobic organic contaminants by benthic and sessile invertebrates. Based on literature data, this review evaluated polymeric sampling as a tool for predicting the bioaccumulation of polychlorinated biphenyls (PCBs) by pelagic and mobile fish and shellfish. Lipid-normalized concentrations (CL) were linked to corresponding equilibrium polymer concentrations (CP) to evaluate the (1) correlation between CL and CP, (2) accuracy when using CP as surrogates for CL, (3) effects of experimental variables on these results, and (4) implications associated with this approach. Generally, strong positive log-log linear correlations existed between CL and CP, meaning that increasing bioaccumulation was well-reflected by increasing polymer accumulation. Further, the majority of the regression lines, as well as individual CL to CP ratios, were within a factor of 10 from the hypothetical 1:1 relationship, suggesting that polymers accumulated concentrations comparable to body residues in fish and shellfish. Interestingly, overall stronger correlations and lower CL to CP ratios resulted when CP were based on sediment compared to water column-deployed samplers. These findings provide a tool for environmental managers when assessing and managing risk associated with PCB-contaminated sediments and waters in protecting vulnerable fish and shellfish species.
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Affiliation(s)
- Stine N. Schmidt
- National Research Council, US Environmental Protection Agency, Office of Research and Development, Atlantic Coastal Environmental Sciences Division, Narragansett, Rhode Island, USA
| | - Robert M. Burgess
- US Environmental Protection Agency, Office of Research and Development, Atlantic Coastal Environmental Sciences Division, Narragansett, Rhode Island, USA
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37
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Joyce AS, Fernandez LA, Burgess RM. In Situ Investigation of Performance Reference Compound-Based Estimates of PCB Equilibrated Passive Sampler Concentrations and C free in the Marine Water Column. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:1165-1173. [PMID: 32187698 PMCID: PMC7307426 DOI: 10.1002/etc.4714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/28/2020] [Accepted: 03/13/2020] [Indexed: 05/05/2023]
Abstract
Low-density polyethylene sheets are used as passive samplers for aquatic environmental monitoring to measure the freely dissolved concentration (Cfree ) of hydrophobic organic contaminants (HOCs). Freely dissolved HOCs in water will partition into the polyethylene until a thermodynamic equilibrium is achieved; that is, the HOC's activity in the passive sampler is the same as its activity in the surrounding environment. One way to evaluate the equilibrium status or estimate the uptake kinetics is by using performance reference compounds (PRCs). A fractional equilibrium (feq ) can be determined for target HOCs, under the assumption that PRC desorption from the passive sampler occurs at the same rate as for the unlabeled target HOCs. However, few investigations have evaluated how effectively and accurately PRCs estimate target contaminant Cfree under in situ conditions. In the present study, polyethylene passive samplers were preloaded with 6 13 C-labeled polychlorinated biphenyls (PCBs) as PRCs; deployed in New Bedford Harbor, Massachusetts, USA; and collected after 30-, 56-, 99-, and 129-d deployments. Using this unique temporal sampling design, PRC results from each deployment were fit to a diffusion model to estimate the Cfree of 27 PCB congeners and compare the results between the different deployment times. Smaller PCBs had variable concentrations over the 4 deployments, whereas mid-molecular weight PCBs had consistent Cfree measurements for all deployments (relative standard deviation <20%). High-molecular weight PCBs had the largest Cfree estimates after 30 d; these estimates and their standard deviations decreased with longer deployment times. These findings suggest that when targeting PCBs with more than 6 chlorines or contaminants with a log octanol-water partition coefficient ≥6.5, a deployment time longer than 30 d may be prudent. Environ Toxicol Chem 2020;39:1165-1173. © 2020 SETAC.
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Affiliation(s)
- Abigail S Joyce
- Department of Civil and Environmental Engineering, Duke University, Durham, North Carolina, USA
| | - Loretta A Fernandez
- Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts, USA
| | - Robert M Burgess
- Office of Research and Development/Center for Environmental Measurement and Modeling, Atlantic Coastal Environmental Sciences Division, US Environmental Protection Agency, Narragansett, Rhode Island
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38
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Khairy MA, Lohmann R. Assessing Benthic Bioaccumulation of Polychlorinated Dioxins/Furans and Polychlorinated Biphenyls in the Lower Passaic River (NJ, USA) Based on In Situ Passive Sampling. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:1174-1185. [PMID: 32200571 DOI: 10.1002/etc.4716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/08/2020] [Accepted: 03/16/2020] [Indexed: 06/10/2023]
Abstract
Passive sampling has emerged as a promising tool to assess the presence of hydrophobic organic contaminants (HOC) in water, sediment, and biota, such as polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs) or polychlorinated biphenyls (PCBs). Previous work evaluated the ability of passive samplers to predict the bioavailability of sedimentary HOCs mostly in the laboratory, often for marine organisms. The present study assessed the use of low-density polyethylene (LDPE) to derive freely dissolved concentrations of PCDD/Fs and PCBs in porewater in situ versus ex situ and in river water. An LDPE-based multisampler system was deployed at 4 locations along the lower Passaic River (NJ, USA) in sediment and the water column, where sediment and benthic species samples were also collected. Good agreement was generally observed for PCDD/F and PCB concentrations comparing in situ and ex situ approaches (within 0.30-39%). Significant linear relationships were derived between log LDPE-based and log lipid-based concentrations of PCDD/Fs and PCBs. The in situ multisampler system showed promise to derive HOC concentrations in porewater and river water and to predict the bioaccumulation potential of HOCs in benthic biota. Environ Toxicol Chem 2020;39:1174-1185. © 2020 SETAC.
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Affiliation(s)
- Mohammed A Khairy
- Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island, USA
- Department of Environmental Sciences, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Rainer Lohmann
- Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island, USA
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39
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Jonker MTO, Burgess RM, Ghosh U, Gschwend PM, Hale SE, Lohmann R, Lydy MJ, Maruya KA, Reible D, Smedes F. Ex situ determination of freely dissolved concentrations of hydrophobic organic chemicals in sediments and soils: basis for interpreting toxicity and assessing bioavailability, risks and remediation necessity. Nat Protoc 2020; 15:1800-1828. [PMID: 32313252 DOI: 10.1038/s41596-020-0311-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 02/10/2020] [Indexed: 11/09/2022]
Abstract
The freely dissolved concentration (Cfree) of hydrophobic organic chemicals in sediments and soils is considered the driver behind chemical bioavailability and, ultimately, toxic effects in benthic organisms. Therefore, quantifying Cfree, although challenging, is critical when assessing risks of contamination in field and spiked sediments and soils (e.g., when judging remediation necessity or interpreting results of toxicity assays performed for chemical safety assessments). Here, we provide a state-of-the-art passive sampling protocol for determining Cfree in sediment and soil samples. It represents an international consensus procedure, developed during a recent interlaboratory comparison study. The protocol describes the selection and preconditioning of the passive sampling polymer, critical incubation system component dimensions, equilibration and equilibrium condition confirmation, quantitative sampler extraction, quality assurance/control issues and final calculations of Cfree. The full procedure requires several weeks (depending on the sampler used) because of prolonged equilibration times. However, hands-on time, excluding chemical analysis, is approximately 3 d for a set of about 15 replicated samples.
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Affiliation(s)
- Michiel T O Jonker
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands.
| | - Robert M Burgess
- Atlantic Coastal Environmental Science Division, Office of Research and Development, U.S. Environmental Protection Agency, Narragansett, RI, USA
| | - Upal Ghosh
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, Baltimore, MD, USA
| | - Philip M Gschwend
- RM Parsons Laboratory, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sarah E Hale
- Geotechnics and Environment, Norwegian Geotechnical Institute, Oslo, Norway
| | - Rainer Lohmann
- Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, USA
| | - Michael J Lydy
- Center for Fisheries, Aquaculture and Aquatic Sciences, and Department of Zoology, Southern Illinois University, Carbondale, IL, USA
| | - Keith A Maruya
- Chemistry Department, Southern California Coastal Water Research Project Authority, Costa Mesa, CA, USA
| | - Danny Reible
- Civil, Environmental and Construction Engineering, Texas Tech University, Lubbock, TX, USA
| | - Foppe Smedes
- Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic
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40
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Cerasa M, Benedetti P, De Stefanis A, Guerriero E, Mosca S, Bacaloni A, Rotatori M. Validation studies on activated carbon fiber passive sampler for PCDD/Fs and PCBs in water. CHEMOSPHERE 2020; 239:124666. [PMID: 31479911 DOI: 10.1016/j.chemosphere.2019.124666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 08/19/2019] [Accepted: 08/24/2019] [Indexed: 06/10/2023]
Abstract
The toxicity of polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) is well known, and for this reason studying and monitoring these chemicals is fundamental. Activated carbon fibers (ACFs) are made of an adsorbent material widely used in the industrial field for the removal of micropollutants. The first step in this work was to perform a physico-chemical characterization of the adsorbent, focused on the analytical use of it. In particular, its specific surface area was defined around 2500 m2/g consisting in a homogeneous microporosity distribution and the characterization of ACF surface functional groups pointed out a balance between basic and acidic group. The validity of using the ACF as solid phase extraction and as passive sampler for PCDD/Fs and PCBs in water, has been evaluated by the percentage recovery (R %) of 13C12-labeled standards of PCDD/Fs and PCBs added in a known volume of water. The results were compared to the R% of Liquid-Liquid Extraction which showed a better reproducibility of the results and the proposed method satisfy completely the requirements of US EPA reference methods.
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Affiliation(s)
- Marina Cerasa
- National Research Council of Italy - Institute of Atmospheric Pollution Research (CNR-IIA), Via Salaria km 29.3, 00015, Monterotondo (RM), Italy; Sapienza University of Rome, Rome, 00185, Italy.
| | - Paolo Benedetti
- National Research Council of Italy - Institute of Atmospheric Pollution Research (CNR-IIA), Via Salaria km 29.3, 00015, Monterotondo (RM), Italy
| | - Adriana De Stefanis
- National Research Council of Italy - Institute of Structure of Matter (CNR - ISM), Via Salaria km 29.3, 00015, Monterotondo (RM), Italy
| | - Ettore Guerriero
- National Research Council of Italy - Institute of Atmospheric Pollution Research (CNR-IIA), Via Salaria km 29.3, 00015, Monterotondo (RM), Italy
| | - Silvia Mosca
- National Research Council of Italy - Institute of Atmospheric Pollution Research (CNR-IIA), Via Salaria km 29.3, 00015, Monterotondo (RM), Italy
| | | | - Mauro Rotatori
- National Research Council of Italy - Institute of Atmospheric Pollution Research (CNR-IIA), Via Salaria km 29.3, 00015, Monterotondo (RM), Italy
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41
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Shen X, Reible D. An analytical model for the fate and transport of performance reference compounds and target compounds around cylindrical passive samplers. CHEMOSPHERE 2019; 232:489-495. [PMID: 31174007 DOI: 10.1016/j.chemosphere.2019.05.198] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 05/21/2023]
Abstract
Passive sampling by deploying organic polymers for 20-30 days in soils or sediments has been used for the assessment of bioavailability and mobility of hydrophobic organic contaminants. An important step in their interpretation is the estimation of the degree of equilibration, typically through the release of performance reference compounds (PRCs). This paper develops an improved modeling tool for predicting the behaviors of PRCs and contaminant compounds in devices in cylindrical geometry, such as polydimethylsiloxane (PDMS) fibers or dialysis samplers of cylindrical cross-section. The model is solved by both a numerically inverted Laplace domain solution and an asymptotic analytical solution. The solutions are verified with the numerically simulated results. A comparison of the developed model to existing models for the calibration of uptake/release rates and the estimation of soil or sediment transport properties is performed. The result suggests that the cylindrical model provides a more accurate prediction for the transient behavior of PRC and target compounds as well as a better estimate of transport properties in the media.
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Affiliation(s)
- Xiaolong Shen
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, 911 Boston Ave., Lubbock, TX, 79409, United States
| | - Danny Reible
- Department of Civil, Environmental, and Construction Engineering, Texas Tech University, 911 Boston Ave., Lubbock, TX, 79409, United States.
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42
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Fairbrother A, Muir D, Solomon KR, Ankley GT, Rudd MA, Boxall AB, Apell JN, Armbrust KL, Blalock BJ, Bowman SR, Campbell LM, Cobb GP, Connors KA, Dreier DA, Evans MS, Henry CJ, Hoke RA, Houde M, Klaine SJ, Klaper RD, Kullik SA, Lanno RP, Meyer C, Ottinger MA, Oziolor E, Petersen EJ, Poynton HC, Rice PJ, Rodriguez‐Fuentes G, Samel A, Shaw JR, Steevens JA, Verslycke TA, Vidal‐Dorsch DE, Weir SM, Wilson P, Brooks BW. Toward Sustainable Environmental Quality: Priority Research Questions for North America. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:1606-1624. [PMID: 31361364 PMCID: PMC6852658 DOI: 10.1002/etc.4502] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/19/2019] [Accepted: 05/16/2019] [Indexed: 05/19/2023]
Abstract
Anticipating, identifying, and prioritizing strategic needs represent essential activities by research organizations. Decided benefits emerge when these pursuits engage globally important environment and health goals, including the United Nations Sustainable Development Goals. To this end, horizon scanning efforts can facilitate identification of specific research needs to address grand challenges. We report and discuss 40 priority research questions following engagement of scientists and engineers in North America. These timely questions identify the importance of stimulating innovation and developing new methods, tools, and concepts in environmental chemistry and toxicology to improve assessment and management of chemical contaminants and other diverse environmental stressors. Grand challenges to achieving sustainable management of the environment are becoming increasingly complex and structured by global megatrends, which collectively challenge existing sustainable environmental quality efforts. Transdisciplinary, systems-based approaches will be required to define and avoid adverse biological effects across temporal and spatial gradients. Similarly, coordinated research activities among organizations within and among countries are necessary to address the priority research needs reported here. Acquiring answers to these 40 research questions will not be trivial, but doing so promises to advance sustainable environmental quality in the 21st century. Environ Toxicol Chem 2019;38:1606-1624. © 2019 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC.
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Affiliation(s)
| | - Derek Muir
- Aquatic Contaminants Research DivisionEnvironment and Climate Change Canada, Burlington ONCanada
| | - Keith R. Solomon
- School of Environmental SciencesUniversity of Guelph, GuelphOntarioCanada
| | | | | | | | - Jennifer N. Apell
- Department of Civil & Environmental EngineeringMassachusetts Institute of Technology, CambridgeMAUSA
| | - Kevin L. Armbrust
- Department of Environmental Sciences, College of the Coast and EnvironmentLouisiana State University, Baton RougeLouisianaUSA
| | - Bonnie J. Blalock
- School for the EnvironmentUniversity of Massachusetts BostonBostonMassachusettsUSA
| | - Sarah R. Bowman
- Michigan Department of Environmental QualityDetroitMichiganUSA
| | - Linda M. Campbell
- Environmental Science, Saint Mary's University, HalifaxNova ScotiaCanada
| | - George P. Cobb
- Department of Environmental ScienceBaylor UniversityWacoTexasUSA
| | | | - David A. Dreier
- Center for Environmental & Human ToxicologyUniversity of FloridaGainesvilleFloridaUSA
| | - Marlene S. Evans
- Aquatic Contaminants Research DivisionEnvironment and Climate Change Canada, Burlington ONCanada
| | | | | | - Magali Houde
- Aquatic Contaminants Research DivisionEnvironment and Climate Change Canada, Burlington ONCanada
| | | | | | | | | | | | - Mary Ann Ottinger
- Department of Biology and BiochemistryUniversity of HoustonHoustonTexasUSA
| | - Elias Oziolor
- Department of Environmental ScienceBaylor UniversityWacoTexasUSA
| | - Elijah J. Petersen
- Material Measurement LaboratoryNational Institute of Standards and TechnologyGaithersburgMarylandUSA
| | - Helen C. Poynton
- School for the EnvironmentUniversity of Massachusetts BostonBostonMassachusettsUSA
| | - Pamela J. Rice
- US Department of AgricultureAgricultural Research ServiceWashington, DC
| | | | | | - Joseph R. Shaw
- School of Public and Environmental Affairs, Indiana UniversityBloomingtonIndianaUSA
| | | | | | | | - Scott M. Weir
- Queen's University of CharlotteCharlotteNorth CarolinaUSA
| | | | - Bryan W. Brooks
- Procter and GambleCincinnatiOhioUSA
- Institute of Biomedical Studies, Baylor UniversityWacoTexasUSA
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43
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McGrath JA, Joshua N, Bess AS, Parkerton TF. Review of Polycyclic Aromatic Hydrocarbons (PAHs) Sediment Quality Guidelines for the Protection of Benthic Life. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2019; 15:505-518. [PMID: 30945428 PMCID: PMC6852300 DOI: 10.1002/ieam.4142] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 01/02/2019] [Accepted: 03/04/2019] [Indexed: 05/02/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) in sediments can pose harm to the benthic community. Numerous sediment quality guidelines (SQGs) for the protection of benthic life are available to assess the risk of individual PAHs and PAH mixtures in sediments. Sediment quality guidelines are derived using empirical or mechanistic approaches. Empirically based guidelines are derived using databases of paired sediment chemistry and biological responses and relating sediment concentration to the frequency of an adverse response. Mechanistically based SQGs are derived by considering the inherent aqueous toxicity of the chemical to different biota coupled with site-specific sediment characteristics (i.e., organic C) known to influence PAH bioavailability. Additionally, SQGs are derived to be either protective or predictive of adverse effects in benthic organisms. The objective of this critical review was to evaluate SQGs for use in screening-level risk assessments to identify sediments that may pose a risk to the benthic community. SQGs for PAHs were compiled and compared, and performance evaluated for predicting the presence and absence of toxicity using an extensive field data set. Furthermore, a 2-carbon equilibrium partitioning model and direct measurement of porewater via passive sampling were evaluated for improved performance in higher tiered risk assessments. Recommendations for the use of SQGs in screening evaluations, enhancements to current approaches, and opportunities to refine site risk estimate assessments using passive sampling measurements are discussed. Integr Environ Assess Manag 2019;15:505-518. © 2019 SETAC.
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44
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Khairy MA, Noonan GO, Lohmann R. Uptake of hydrophobic organic compounds, including organochlorine pesticides, polybrominated diphenyl ethers, and perfluoroalkyl acids in fish and blue crabs of the lower Passaic River, New Jersey, USA. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:872-882. [PMID: 30614049 PMCID: PMC6475076 DOI: 10.1002/etc.4354] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/30/2018] [Accepted: 01/02/2019] [Indexed: 06/09/2023]
Abstract
The bioavailability and bioaccumulation of sedimentary hydrophobic organic compounds (HOCs) is of concern at contaminated sites. Passive samplers have emerged as a promising tool to measure the bioavailability of sedimentary HOCs and possibly to estimate their bioaccumulation. We thus analyzed HOCs including organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), and polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs) in sediment, porewater, and river water using low-density polyethylene passive samplers and in 11 different finfish species and blue crab from the lower Passaic River. In addition, perfluorinated alkyl acids (PFAAs) were measured in grab water samples, sediment, and fish. Best predictors of bioaccumulation in biota were either porewater concentrations (for PCBs and OCPs) or sediment organic carbon (PBDEs and PFAAs), including black carbon (OCPs, PCBs, and some PCDD/F congeners)-normalized concentrations. Measured lipid-based concentrations of the majority of HOCs exceeded the chemicals' activities in porewater by at least 2-fold, suggesting dietary uptake. Trophic magnification factors were >1 for moderately hydrophobic analytes (log octanol-water partitioning coefficient [KOW ] = 6.5-8.2) with low metabolic transformation rates (<0.01 d-1 ), including longer alkyl chain PFAAs. For analytes with lower (4.5-6.5) and higher (>8.2) KOW s, metabolic transformation was more important in reducing trophic magnification. Environ Toxicol Chem 2019;38:872-882. © 2019 SETAC.
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Affiliation(s)
- Mohammed A. Khairy
- Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island 02882 USA
- Department of Environmental Sciences, Faculty of Science, Alexandria University, 21511 Moharam Bek, Alexandria, Egypt
| | - Gregory O. Noonan
- US Food and Drug Administration, Center for Food Safety and Applied Nutrition, College Park, MD 20740, USA
| | - Rainer Lohmann
- Department of Environmental Sciences, Faculty of Science, Alexandria University, 21511 Moharam Bek, Alexandria, Egypt
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45
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Payne RB, Ghosh U, May HD, Marshall CW, Sowers KR. A Pilot-Scale Field Study: In Situ Treatment of PCB-Impacted Sediments with Bioamended Activated Carbon. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:2626-2634. [PMID: 30698958 DOI: 10.1021/acs.est.8b05019] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A combined approach involving microbial bioaugmentation and enhanced sorption was demonstrated to be effective for in situ treatment of polychlorinated biphenyls (PCBs). A pilot study was conducted for 409 days on PCB impacted sediments in four 400 m2 plots located in a watershed drainage pond in Quantico, VA. Treatments with activated carbon (AC) agglomerate bioamended with PCB dechlorinating and oxidizing bacteria decreased the PCB concentration in the top 7.5 cm by up to 52% and the aqueous concentrations of tri- to nonachlorobiphenyl PCB congeners by as much as 95%. Coplanar congeners decreased by up to 80% in sediment and were undetectable in the porewater. There was no significant decrease in PCB concentrations in non-bioamended plots with or without AC. All homologue groups decreased in bioamended sediment and porewater, indicating that both anaerobic dechlorination and aerobic degradation occurred concurrently. The titer of the bioamendments based on quantitative PCR of functional marker genes decreased but were still detectable after 409 days, whereas indigenous microbial diversity was not significantly different between sites, time points, or depths, indicating that bioaugmentation and the addition of activated carbon did not significantly alter total microbial diversity. In situ treatment of PCBs using an AC agglomerate as a delivery system for bioamendments is particularly well-suited for environmentally sensitive sites where there is a need to reduce exposure of the aquatic food web to sediment-bound PCBs with minimal disruption to the environment.
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Affiliation(s)
- Rayford B Payne
- Department of Marine Biotechnology, Institute of Marine and Environmental Technology , University of Maryland Baltimore County , Baltimore Maryland 21202 , United States
| | - Upal Ghosh
- Department of Chemical, Biochemical, and Environmental Engineering , University of Maryland Baltimore County , Baltimore Maryland 21250 , United States
| | - Harold D May
- Hollings Marine Laboratory, Department of Microbiology and Immunology , Medical University of South Carolina , Charleston South Carolina 29412 , United States
| | - Christopher W Marshall
- Biosciences Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Kevin R Sowers
- Department of Marine Biotechnology, Institute of Marine and Environmental Technology , University of Maryland Baltimore County , Baltimore Maryland 21202 , United States
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Needham TP, Ghosh U. Four decades since the ban, old urban wastewater treatment plant remains a dominant source of PCBs to the environment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 246:390-397. [PMID: 30577007 DOI: 10.1016/j.envpol.2018.12.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 12/03/2018] [Accepted: 12/07/2018] [Indexed: 06/09/2023]
Abstract
Despite the ban on new manufacture and commercial use of PCBs, municipal sewer systems continue to serve as ongoing secondary sources for contamination in receiving water bodies. Ongoing PCB sources have made it difficult to achieve desired recovery after implementation of sediment cleanup efforts. We report on a 16-month surveillance to determine the inputs, fate, and export of PCBs within a municipal waste collection/treatment system by strategic sampling of the freely-dissolved and biosolids-associated PCBs. The total PCBs entering the treatment plant was found to be 170 g/day of which 100 g/day exited the plant associated with the biosolids and 5.2 g/day was discharged in the form of freely-dissolved PCBs in the effluent. A net loss of 68 g/day was calculated for the plant, attributable to volatilization and biodegradation. Freely dissolved PCBs in the treated effluent was an order of magnitude higher than the water quality criteria for the protection of human health through fish consumption and found to be a major contributor to the dissolved concentration in the receiving river. Predicted bioaccumulation in fish from dissolved PCBs in the effluent exceeded the threshold for human consumption. The biosolids, currently land-applied as fertilizer, contained an average PCB concentration of 760 μg/kg. The sludge produced in this treatment plant is processed in large anaerobic digesters and changes to the homolog distribution point to some microbial dechlorination. Application of biosolids to clean agricultural soil resulted in a 6-fold increase in PCB levels in the earthworm E. fetida which could be eliminated by the amendment of 1% by weight of activated carbon.
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Affiliation(s)
- Trevor P Needham
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, 21250, USA
| | - Upal Ghosh
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland Baltimore County, Baltimore, MD, 21250, USA.
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47
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Lao W, Maruya KA, Tsukada D. An exponential model based new approach for correcting aqueous concentrations of hydrophobic organic chemicals measured by polyethylene passive samplers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:11-18. [PMID: 30041043 DOI: 10.1016/j.scitotenv.2018.07.192] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/14/2018] [Accepted: 07/15/2018] [Indexed: 06/08/2023]
Abstract
Although low density polyethylene (PE) passive samplers show promise for the measurement of aqueous phase hydrophobic organic chemicals (HOCs), the lack of a practical and unsophisticated approach to account for non-equilibrium exposure conditions has impeded widespread acceptance and thus application in situ. The goal of this study was to develop a streamlined approach based on an exponential model and a convection mass transfer principle for correcting aqueous concentrations for HOCs deduced by PE samplers under non-equilibrium conditions. First, uptake rate constants (k1), elimination rate constants (k2), and seawater-PE equilibrium partition coefficients (KPEWs) were determined in laboratory experiments for a diverse suite of HOCs with logKow range of 3.4-8.3. Linear relationships between log k2 and logKow, and between log KPEW and logKow were established. Second, PE samplers pre-loaded with 13C-labeled performance reference compounds (PRCs) were deployed in the ocean to determine their k2in situ. By applying boundary layer and convection mass transfer theories, ratio (C) of k2 values in field and laboratory exposures was estimated. This C value was demonstrated a constant that was only determined by water velocities and widths of PE strips. A generic equation with C and logKow as parameters was eventually established for extrapolation of non-equilibrium correction factors for the water boundary layer-controlled HOCs. Characterizing the hydrodynamic conditions indicated the sampler configuration and mooring mode should aim at sustaining laminar flow on the PE surface for optimal mass transfer. The PE estimates corrected using this novel approach possessed high accuracy and acceptable precision, and can be suited for a broad spectrum of HOCs. The presented method should facilitate routine utilization of the PE samplers.
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Affiliation(s)
- Wenjian Lao
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA 92626, USA.
| | - Keith A Maruya
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA 92626, USA
| | - David Tsukada
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA 92626, USA
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48
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Bartolomé N, Hilber I, Schulin R, Mayer P, Witt G, Reininghaus M, Bucheli TD. Comparison of freely dissolved concentrations of PAHs in contaminated pot soils under saturated and unsaturated water conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 644:835-843. [PMID: 30743881 DOI: 10.1016/j.scitotenv.2018.06.359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/28/2018] [Accepted: 06/28/2018] [Indexed: 06/09/2023]
Abstract
Passive sampling (PS, equally used for passive sampler) methods have successfully been applied in situ to quantify the bioavailability of hydrophobic organic compounds in air, water and sediments. However, very little is known on the applicability of PS in unsaturated soils. Here, we present the results of a greenhouse experiment in which we applied in situ PS methods in pots. Low density polyethylene (LDPE) and polydimethylsiloxane (PDMS) fibres with a newly developed PS holder were used to analyse freely dissolved polycyclic aromatic hydrocarbon (PAH) concentrations (Cfree) in a skeet shooting range soil and an uncontaminated control soil under water saturated and unsaturated conditions for up to nine months. A short exposure time of three months was not sufficient for the PDMS samplers to reach distribution equilibrium with the surrounding soil. Under saturated water conditions, the in situ results agreed well with measurements obtained from the conventional ex situ soil suspension method. They were in accordance with similar comparisons made in previous studies on sediments, as well as with model predictions. However, for unsaturated water conditions, the results differed considerably from the ex situ Cfree values, in particular for the light molecular weight (LMW) PAHs such as phenanthrene, fluoranthene, and pyrene. The results of the two in situ PS methods were in good agreement with each other under both soil water conditions, indicating that dissipation mechanisms, such as degradation or volatilization, led to a substantial decrease in Cfree under unsaturated conditions, especially for the LMW PAHs (log10KOW < 5.85) over a period of six months or more. Thus, in their current state of development, in situ PS methods can be used in soils under water-saturated conditions. However, an adequate method to correct for non-equilibrium conditions needs to be developed before they can be applied to unsaturated conditions, mainly for LMW PAHs.
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Affiliation(s)
- Nora Bartolomé
- Agroscope, Environmental Analytics, Reckenholzstrasse 191, 8046 Zurich, Switzerland; Department of Environmental Systems Sciences, ETH Zurich, Universitätsstrasse 16, 8092 Zurich, Switzerland
| | - Isabel Hilber
- Agroscope, Environmental Analytics, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | - Rainer Schulin
- Department of Environmental Systems Sciences, ETH Zurich, Universitätsstrasse 16, 8092 Zurich, Switzerland
| | - Philipp Mayer
- Technical University of Denmark, 2800, Kongens, Lyngby, Denmark
| | - Gesine Witt
- University of Applied Science Hamburg, D-21033 Hamburg, Germany
| | | | - Thomas D Bucheli
- Agroscope, Environmental Analytics, Reckenholzstrasse 191, 8046 Zurich, Switzerland.
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49
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Gefell MJ, Kanematsu M, Vlassopoulos D, Lipson DS. Aqueous-Phase Sampling with NAPL Exclusion Using Ceramic Porous Cups. GROUND WATER 2018; 56:847-851. [PMID: 30255503 DOI: 10.1111/gwat.12827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 09/07/2018] [Indexed: 06/08/2023]
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50
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Sanders JP, Andrade NA, Ghosh U. Evaluation of passive sampling polymers and nonequilibrium adjustment methods in a multiyear surveillance of sediment porewater PCBs. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2018; 37:2487-2495. [PMID: 29978585 DOI: 10.1002/etc.4223] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/19/2018] [Accepted: 07/02/2018] [Indexed: 05/21/2023]
Abstract
Polymeric passive sampling devices are increasingly used to measure low-level, freely dissolved concentrations of hydrophobic organic contaminants in environmental waters. A range of polymers have been used for this purpose, and several different methods of accounting for nonequilibrium using performance reference compounds (PRCs) have been proposed. The present study explores the practical impacts of these decisions in an applied context using results from a multiyear passive sampling surveillance of polychlorinated biphenyl concentrations in sediment porewater at a contaminated marsh amended with activated carbon (AC) sorbent materials. In a series of 5 sampling events spanning almost 2 yr, we deployed polyoxymethylene and polyethylene samplers and calculated porewater concentrations with 5 different PRC adjustment methods. The results provide a basis for evaluating amendment performance by showing reductions of 34 to 97% in amended sediment porewater concentrations. They also provide a quantitative underpinning for discussions of the differences between sampling polymers, selection of PRCs, generation of high-resolution vertical profiles of porewater concentrations, and a comparison of PRC adjustment methods. For unamended sediment, older methods based on first-order kinetics agreed well with a recently developed method based on diffusion into and out of sediment beds. However, the sediment diffusion method did not work well for the sediments amended with AC. Environ Toxicol Chem 2018;37:2487-2495. © 2018 SETAC.
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Affiliation(s)
- James P Sanders
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, Baltimore, Maryland, USA
| | - Natasha A Andrade
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, Baltimore, Maryland, USA
| | - Upal Ghosh
- Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, Baltimore, Maryland, USA
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