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Yin M, Lancia M, Zhang Y, Qiu W, Zheng C. Experimental and modeling insights into mixing-limited reactive transport in heterogeneous porous media: Role of stagnant zones. WATER RESEARCH 2024; 266:122383. [PMID: 39265213 DOI: 10.1016/j.watres.2024.122383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 08/07/2024] [Accepted: 09/02/2024] [Indexed: 09/14/2024]
Abstract
The understanding of mixing-controlled reactive dynamics in heterogeneous porous media remains limited, presenting significant challenges for modeling subsurface contaminant transport processes and for designing cost-effective environmental remedial efforts. The complexity of accurately observing, measuring, and modeling mixing-limited reactive transport has led to inadequate exploration of these critical processes. This study investigates the mixing and reaction kinetics affected by stagnant zones, which are commonly found in alluvial aquifers-aquitards and fracture-matrix systems. By conducting experiments involving conservative and bimolecular reactive transport through porous media within translucent chambers filled with two sizes of glass beads and under varying flow rates, we explored the effects of grain size and hydrodynamic conditions. Using a high-resolution camera, we monitored the concentration changes of conservative and reactive tracers, with subsequent interpretation through three-dimensional numerical simulations. The outcomes revealed the emergence of distinct mixing interfaces within both mobile and stagnant zones, culminating in a bi-peaked plume formation. Notably, the mixing and reaction times in media containing stagnant zones were found to be approximately 10 times longer than in homogeneous media. These findings, through experimental and modeling efforts, advance our understanding of mixing-limited reactive transport phenomena within heterogeneous media, underscoring the significant role of stagnant zones-a topic previously underexplored.
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Affiliation(s)
- Maosheng Yin
- Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Michele Lancia
- Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, China
| | - Yong Zhang
- Department of Geological Sciences, University of Alabama, Tuscaloosa, Alabama, USA
| | - Wenhui Qiu
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Chunmiao Zheng
- Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, China; Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China.
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2
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Rogers NMK, Wiesner MR. Methods for the Characterization of the Colloidal Properties of Bacterial Membrane Vesicles. Methods Mol Biol 2024; 2843:25-35. [PMID: 39141292 DOI: 10.1007/978-1-0716-4055-5_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Bacterial membrane vesicles (BMVs) are extracellular vesicles secreted by either Gram-positive or Gram-negative bacteria. These BMVs typically possess a diameter between 20 and 250 nm. Due to their size, when these BMVs are suspended in another medium, they could be constituents of a colloidal system. It has been hypothesized that investigating BMVs as colloidal particles could help characterize BMV interactions with other environmentally relevant surfaces. Developing a more thorough understanding of BMV interactions with other surfaces would be critical for developing predictive models of their environmental fate. However, this bio-colloidal perspective has been largely overlooked for BMVs, despite the wealth of methods and expertise available to characterize colloidal particles. A particular strength of taking a more colloid-centric approach to BMV characterization is the potential to quantify a particle's attachment efficiency (α). These values describe the likelihood of attachment during particle-particle or particle-surface interactions, especially those interactions which are governed by physicochemical interactions (such as those described by DLVO and xDLVO theory). Elucidating the influence of physical and electrochemical properties on these attachment efficiency values could give insights into the primary factors driving interactions between BMVs and other surfaces. This chapter details methods for the characterization of BMVs as colloids, beginning with size and surface charge (i.e., electrophoretic mobility/zeta potential) measurements. Afterward, this chapter will address experimental design, especially column experiments, targeted for BMV investigation and the determination of α values.
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Affiliation(s)
- Nicholas M K Rogers
- Department of Mechanical Engineering, Porter School of Earth and Environmental Studies, Tel Aviv University, Tel Aviv, Israel
| | - Mark R Wiesner
- Center for the Environmental Implications of Nanotechnology, Department of Civil & Environmental Engineering, Duke University, Durham, NC, USA.
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3
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Hicks E, Rogers NMK, Hendren CO, Kuehn MJ, Wiesner MR. Extracellular Vesicles and Bacteriophages: New Directions in Environmental Biocolloid Research. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:16728-16742. [PMID: 37898880 DOI: 10.1021/acs.est.3c05041] [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: 10/31/2023]
Abstract
There is a long-standing appreciation among environmental engineers and scientists regarding the importance of biologically derived colloidal particles and their environmental fate. This interest has been recently renewed in considering bacteriophages and extracellular vesicles, which are each poised to offer engineers unique insights into fundamental aspects of environmental microbiology and novel approaches for engineering applications, including advances in wastewater treatment and sustainable agricultural practices. Challenges persist due to our limited understanding of interactions between these nanoscale particles with unique surface properties and their local environments. This review considers these biological particles through the lens of colloid science with attention given to their environmental impact and surface properties. We discuss methods developed for the study of inert (nonbiological) particle-particle interactions and the potential to use these to advance our understanding of the environmental fate and transport of extracellular vesicles and bacteriophages.
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Affiliation(s)
- Ethan Hicks
- Department of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for the Environmental Implications of Nanotechnology, Duke University, Durham, North Carolina 27708, United States
| | - Nicholas M K Rogers
- Department of Mechanical Engineering, Porter School of Earth and Environmental Studies, Tel Aviv University, Tel Aviv 69978, Israel
| | - Christine Ogilvie Hendren
- Center for the Environmental Implications of Nanotechnology, Duke University, Durham, North Carolina 27708, United States
- Research Institute for Environment, Energy and Economics, Appalachian State University, Boone, North Carolina 28608, United States
| | - Meta J Kuehn
- Department of Biochemistry, Duke University Medical Center, Durham, North Carolina 27710, United States
| | - Mark R Wiesner
- Department of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
- Center for the Environmental Implications of Nanotechnology, Duke University, Durham, North Carolina 27708, United States
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4
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Rogers NMK, Hicks E, Kan C, Martin E, Gao L, Limso C, Hendren CO, Kuehn M, Wiesner MR. Characterizing the Transport and Surface Affinity of Extracellular Vesicles Isolated from Yeast and Bacteria in Well-Characterized Porous Media. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13182-13192. [PMID: 37606695 PMCID: PMC10483924 DOI: 10.1021/acs.est.3c03700] [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: 05/17/2023] [Revised: 07/26/2023] [Accepted: 08/08/2023] [Indexed: 08/23/2023]
Abstract
Extracellular vesicles (EVs) are membrane-bounded, nanosized particles, produced and secreted by all biological cell types. EVs are ubiquitous in the environment, operating in various roles including intercellular communication and plant immune modulation. Despite their ubiquity, the role of EV surface chemistry in determining transport has been minimally investigated. Using the zeta (ζ)-potential as a surrogate for surface charge, this work considers the deposition of EVs from the yeast, Saccharomyces cerevisiae, and two bacterial species, Staphylococcus aureus and Pseudomonas fluorescens, in well-characterized porous medium under various background conditions shown to influence the transport of other environmental colloidal particles: ionic strength and humic acid concentration. The affinity of S. cerevisiae EVs for the porous medium (glass beads) appeared to be sensitive to changes in ionic strength, as predicted by colloid stability (Derjaguin, Landau, Verwey, and Overbeek or DLVO) theory, and humic acid concentration, while P. fluorescens EVs deviated from DLVO predictions, suggesting that mechanisms other than charge stabilization may control the deposition of P. fluorescens. Calculations of attachment efficiency from these deposition studies were used to estimate EV transport using a clean-bed filtration model. Based on these calculations, EVs could be transported through such homogeneous porous media up to 15 m.
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Affiliation(s)
- Nicholas M. K. Rogers
- Department
of Mechanical Engineering, Porter School of Earth and Environmental
Studies, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ethan Hicks
- Center
for the Environmental Implications of Nanotechnology, Department of
Civil & Environmental Engineering, Duke
University, Durham, North Carolina 27708, United States
| | - Christopher Kan
- Department
of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Ethan Martin
- Department
of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Lijia Gao
- Department
of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
| | - Clariss Limso
- Department
of Biochemistry, Duke University Medical
Center, Durham, North Carolina 27710, United States
| | - Christine Ogilvie Hendren
- Department
of Geological and Environmental Sciences, Research Institute for Environment,
Energy and Economics, Appalachian State
University, Boone, North Carolina 28608, United States
| | - Meta Kuehn
- Department
of Biochemistry, Duke University Medical
Center, Durham, North Carolina 27710, United States
| | - Mark R. Wiesner
- Center
for the Environmental Implications of Nanotechnology, Department of
Civil & Environmental Engineering, Duke
University, Durham, North Carolina 27708, United States
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5
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Gomez-Flores A, Bradford SA, Hong G, Kim H. Statistical analysis, machine learning modeling, and text analytics of aggregation attachment efficiency: Mono and binary particle systems. JOURNAL OF HAZARDOUS MATERIALS 2023; 454:131482. [PMID: 37119570 DOI: 10.1016/j.jhazmat.2023.131482] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/11/2023] [Accepted: 04/22/2023] [Indexed: 05/19/2023]
Abstract
The aggregation attachment efficiency (α) is the fraction of particle-particle collisions resulting in aggregation. Despite significant research, α predictions have not accounted for the full complexity of systems due to constraints imposed by particle types, dispersed matter, water chemistry, quantification methods, and modeling. Experimental α values are often case-specific, and simplified systems are used to rule out complexity. To address these challenges, statistical analysis was performed on α databases to identify gaps in current knowledge, and machine learning (ML) was used to predict α under various particle types and conditions. Moreover, text analytics was employed to support knowledge from statistics and ML, as well as gain insight into the ideas communicated by current literature. Most studies investigated α in mono-particle systems, but binary or higher systems require more investigation. Furthermore, our work highlights that numerous variables, interactions, and mechanisms influence α behavior, making its investigation complex and difficult for both experiments and modeling. Consequently, future research should incorporate more particle types, shapes, coatings, and surface heterogeneities, and aim to address overlooked variables and conditions. Therefore, building a comprehensive α database can enable the development of more accurate empirical models for prediction.
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Affiliation(s)
- Allan Gomez-Flores
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Scott A Bradford
- USDA, ARS, Sustainable Agricultural Water Systems Unit, 239 Hopkins Road, Davis, CA 95616, USA
| | - Gilsang Hong
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Hyunjung Kim
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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6
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Gomez-Flores A, Bradford SA, Cai L, Urík M, Kim H. Prediction of attachment efficiency using machine learning on a comprehensive database and its validation. WATER RESEARCH 2023; 229:119429. [PMID: 36459891 DOI: 10.1016/j.watres.2022.119429] [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: 09/20/2022] [Revised: 11/17/2022] [Accepted: 11/20/2022] [Indexed: 06/17/2023]
Abstract
Colloidal particles can attach to surfaces during transport, but the attachment depends on particle size, hydrodynamics, solid and water chemistry, and particulate matter. The attachment is quantified in filtration theory by measuring attachment or sticking efficiency (Alpha). A comprehensive Alpha database (2538 records) was built from experiments in the literature and used to develop a machine learning (ML) model to predict Alpha. The training (r-squared: 0.86) was performed using two random forests capable of handling missing data. A holdout dataset was used to validate the training (r-squared: 0.98), and the variable importance was explored for training and validation. Finally, an additional validation dataset was built from quartz crystal microbalance experiments using surface-modified polystyrene, poly (methyl methacrylate), and polyethylene. The experiments were performed in the absence or presence of humic acid. Full database regression (r-squared: 0.90) predicted Alpha for the additional validation with an r-squared of 0.23. Nevertheless, when the original database and the additional validation dataset were combined into a new database, both the training (r-squared: 0.95) and validation (r-squared: 0.70) increased. The developed ML model provides a data-driven prediction of Alpha over a big database and evaluates the significance of 22 input variables.
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Affiliation(s)
- Allan Gomez-Flores
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Scott A Bradford
- USDA, ARS, Sustainable Agricultural Water Systems Unit, 239 Hopkins Road, Davis, CA 95616, United States
| | - Li Cai
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China
| | - Martin Urík
- Institute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84215 Bratislava, Slovakia
| | - Hyunjung Kim
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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7
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Taskula S, Stetten L, von der Kammer F, Hofmann T. Platinum Nanoparticle Extraction, Quantification, and Characterization in Sediments by Single-Particle Inductively Coupled Plasma Time-of-Flight Mass Spectrometry. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3307. [PMID: 36234435 PMCID: PMC9565847 DOI: 10.3390/nano12193307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/14/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
Particulate emissions from vehicle exhaust catalysts are the primary contributors to platinum group elements (PGEs) being released into roadside environments, especially platinum (Pt) particles. With increasing traffic density, it is essential to quantify the emission, accumulation, and potential health effects of traffic-emitted Pt particles. In this study, three procedures were investigated to extract Pt nanoparticles (NPs) from sediments and characterize them by single-particle inductively coupled plasma time-of-flight mass spectrometry (spICP-TOF-MS). For this purpose, a reference sediment sample was spiked with manufactured Pt NPs. Pt NPs' extraction recoveries reached from 50% up to 102%, depending on the extraction procedure and whether the particle mass or number was used as the metric. Between 17% and 35% of the Pt NPs were found as unassociated Pt NPs and between 31% and 78% as Pt NPs hetero-aggregated with other sediment particles. Multi-elemental analysis of Pt-containing NPs in the pristine sediment revealed frequently co-occurring elements such as Au, Bi, and Ir, which can be used to determine a natural background baseline. Our results demonstrated that spICP-TOF-MS elemental characterization allows for distinguishing anthropogenic Pt NPs from the natural background. In the future, this could enable the sensitive monitoring of PGE release from anthropogenic sources such as vehicle exhausts.
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8
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Brunelli A, Foscari A, Basei G, Lusvardi G, Bettiol C, Semenzin E, Marcomini A, Badetti E. Colloidal stability classification of TiO 2 nanoparticles in artificial and in natural waters by cluster analysis and a global stability index: Influence of standard and natural colloidal particles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154658. [PMID: 35307445 DOI: 10.1016/j.scitotenv.2022.154658] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 03/14/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
In the field of exposure-driven risk assessment of engineered nanoparticles (NPs), the highly complex interactions of NPs with natural components in surface waters are considered key factors to understand their fate and behavior in the environment. However, since experimental approaches aiming at imitating environmentally relevant conditions include many parameters and lead to a high number of outcomes, statistical tools can be extremely useful to support the results' interpretation. In this context, a multimethod approach was applied to investigate the colloidal behavior of TiO2 NPs in both artificial waters and natural brackish water (from the Venice lagoon, Italy), in the presence of standard kaolinite and natural organic matter (NOM), or of the fine fraction of natural colloidal particles (NCPs) from the lagoon sediment. In detail, the experimental data obtained, i.e. hydrodynamic size, surface charge and sedimentation velocity values, were i) statistically treated by hierarchical clustering and ii) merged into a global stability index (IG). The hierarchical clustering allowed to group the dispersions into three colloidal stability classes, where the main discriminant was the medium composition (i.e. ionic strength and presence of NOM), while the IG allowed to establish a colloidal stability ranking of the dispersions within each class. Moreover, the comparison among the different dispersions suggested that kaolinite could be considered as a suitable surrogate for NCPs, to estimate the colloidal behavior and environmental fate of TiO2 NPs in natural aqueous media.
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Affiliation(s)
- Andrea Brunelli
- DAIS - Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Venice Mestre, Italy
| | - Aurelio Foscari
- DAIS - Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Venice Mestre, Italy
| | - Gianpietro Basei
- DAIS - Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Venice Mestre, Italy; GreenDecision Srl, Via Torino 155, 30170 Venice Mestre, Italy
| | - Gigliola Lusvardi
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, Modena, Italy
| | - Cinzia Bettiol
- DAIS - Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Venice Mestre, Italy
| | - Elena Semenzin
- DAIS - Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Venice Mestre, Italy
| | - Antonio Marcomini
- DAIS - Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Venice Mestre, Italy
| | - Elena Badetti
- DAIS - Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30170 Venice Mestre, Italy.
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9
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Hicks E, Wiesner MR. Exploring the design implications of bacteriophages in mixed suspensions by considering attachment and break-up. WATER RESEARCH 2022; 216:118303. [PMID: 35320767 DOI: 10.1016/j.watres.2022.118303] [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: 02/03/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
The validity and usefulness of implementing bacteriophages into water treatment systems as agents of targeted bacterial inactivation is yet to be determined. While some concerns are still more purely biological in nature other concerns are still chiefly rooted in design feasibility. This work investigated bacteriophage heteroaggregation, a process whereby phages attach to non-host background particles, to explore different design options for water quality engineers, especially tuning mixing velocity. This was done by adapting batch/mixing assays, originally developed to study inert particle heteroaggregation, to characterize bacteriophage and kaolinite heteroaggregation using modified Smoluchowski parameters under different ionic strength conditions. This work found that regardless of the ionic strength or the tested phage to kaolinite ratios heteroaggregation occurred rapidly and was likely driven by extended DLVO forces. A model of bacteriophage-kaolinite heteroaggregation was generated and showed promising correspondence with observed laboratory data. This model, along with other findings, suggests that should bacteriophages be utilized as agents of host inactivation they ought to be used following particle separation processes to reduce the likelihood of phage scavenging through attachment to particulate matter rather than the targeted bacteria.
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Affiliation(s)
- Ethan Hicks
- Center for the Environmental Implications of Nanotechnology (CEINT) and the Department of Civil and Environmental Engineering at Duke University, Durham, N.C., USA
| | - Mark R Wiesner
- Center for the Environmental Implications of Nanotechnology (CEINT) and the Department of Civil and Environmental Engineering at Duke University, Durham, N.C., USA.
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10
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Loosli F, Rasmussen K, Rauscher H, Cross RK, Bossa N, Peijnenburg W, Arts J, Matzke M, Svendsen C, Spurgeon D, Clausen PA, Ruggiero E, Wohlleben W, von der Kammer F. Refinement of the selection of physicochemical properties for grouping and read-across of nanoforms. NANOIMPACT 2022; 25:100375. [PMID: 35559881 DOI: 10.1016/j.impact.2021.100375] [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: 09/30/2021] [Revised: 11/24/2021] [Accepted: 12/08/2021] [Indexed: 06/15/2023]
Abstract
Before placing a new nanoform (NF) on the market, its potential adverse effects must be evaluated. This may e.g. be done via hazard and risk assessment. Grouping and read-across of NFs is a possible strategy to reduce resource consumption, maximising the use of existing data for assessment of NFs. The GRACIOUS project provides a framework in which possible grouping and read-across for NFs is mainly based on an evaluation of their similarity. The impact of NFs on human health and the environment depends strongly on the concentration of the NF and its physicochemical properties, such as chemical composition, size distribution, shape, etc. Hence, knowledge of the most relevant physicochemical properties is essential information for comparing similarity. The presented work aims to refine existing proposals for sets of descriptors (descriptor array) that are needed to describe distinct NFs of a material to identify the most relevant ones for grouping and read-across. The selection criteria for refining this descriptor array are explained and demonstrated. Relevant protocols and methods are proposed for each physicochemical property. The required and achievable measurement accuracies of the refined descriptor array are reviewed, as this information is necessary for similarity assessment of NFs based on individual physicochemical properties.
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Affiliation(s)
- Frédéric Loosli
- Environmental Geosciences, Centre for Microbiology and Environmental Systems Science, University of Vienna, Wien, Austria.
| | | | - Hubert Rauscher
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Richard K Cross
- UK Centre for Ecology and Hydrology, Pollution, Wallingford, Oxfordshire, United Kingdom
| | - Nathan Bossa
- Leitat Technological Center, 08225 Terrassa, Barcelona, Spain
| | - Willie Peijnenburg
- National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, Bilthoven, the Netherlands; Leiden University, Institute of Environmental Sciences (CML), P.O. Box 9518, 2300 RA Leiden, the Netherlands
| | - Josje Arts
- Nouryon Chemicals BV, Velperweg 76, 6824 BM Arnhem, the Netherlands
| | - Marianne Matzke
- UK Centre for Ecology and Hydrology, Pollution, Wallingford, Oxfordshire, United Kingdom
| | - Claus Svendsen
- UK Centre for Ecology and Hydrology, Pollution, Wallingford, Oxfordshire, United Kingdom
| | - David Spurgeon
- UK Centre for Ecology and Hydrology, Pollution, Wallingford, Oxfordshire, United Kingdom
| | - Per Axel Clausen
- The National Research Centre for the Working Environment (NFA), Lersø Parkallé 105, 2100 Copenhagen East, Denmark
| | - Emmanuel Ruggiero
- BASF SE, Dept. of Material Physics, Dept. of Experimental Toxicology and Ecology, 67056 Ludwigshafen, Germany
| | - Wendel Wohlleben
- BASF SE, Dept. of Material Physics, Dept. of Experimental Toxicology and Ecology, 67056 Ludwigshafen, Germany
| | - Frank von der Kammer
- Environmental Geosciences, Centre for Microbiology and Environmental Systems Science, University of Vienna, Wien, Austria
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11
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McMillan HM, Rogers N, Wadle A, Hsu-Kim H, Wiesner MR, Kuehn MJ, Hendren CO. Microbial vesicle-mediated communication: convergence to understand interactions within and between domains of life. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2021; 23:664-677. [PMID: 33899070 DOI: 10.1039/d1em00022e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
All cells produce extracellular vesicles (EVs). These biological packages contain complex mixtures of molecular cargo and have a variety of functions, including interkingdom communication. Recent discoveries highlight the roles microbial EVs may play in the environment with respect to interactions with plants as well as nutrient cycling. These studies have also identified molecules present within EVs and associated with EV surfaces that contribute to these functions. In parallel, studies of engineered nanomaterials have developed methods to track and model small particle behavior in complex systems and measure the relative importance of various surface features on transport and function. While studies of EV behavior in complex environmental conditions have not yet employed transdisciplinary approaches, it is increasingly clear that expertise from disparate fields will be critical to understand the role of EVs in these systems. Here, we outline how the convergence of biology, soil geochemistry, and colloid science can both develop and address questions surrounding the basic principles governing EV-mediated interkingdom interactions.
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Affiliation(s)
- Hannah M McMillan
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Nicholas Rogers
- Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA
| | - Austin Wadle
- Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA
| | - Heileen Hsu-Kim
- Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA
| | - Mark R Wiesner
- Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA
| | - Meta J Kuehn
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA and Department of Biochemistry, Duke University Medical Center, Durham, NC 27710, USA
| | - Christine Ogilvie Hendren
- Department of Civil and Environmental Engineering, Duke University, Durham, NC 27708, USA and Department of Geological and Environmental Sciences, Appalachian State University, Boone, NC 28608, USA.
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12
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Svendsen C, Walker LA, Matzke M, Lahive E, Harrison S, Crossley A, Park B, Lofts S, Lynch I, Vázquez-Campos S, Kaegi R, Gogos A, Asbach C, Cornelis G, von der Kammer F, van den Brink NW, Mays C, Spurgeon DJ. Key principles and operational practices for improved nanotechnology environmental exposure assessment. NATURE NANOTECHNOLOGY 2020; 15:731-742. [PMID: 32807878 DOI: 10.1038/s41565-020-0742-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Nanotechnology is identified as a key enabling technology due to its potential to contribute to economic growth and societal well-being across industrial sectors. Sustainable nanotechnology requires a scientifically based and proportionate risk governance structure to support innovation, including a robust framework for environmental risk assessment (ERA) that ideally builds on methods established for conventional chemicals to ensure alignment and avoid duplication. Exposure assessment developed as a tiered approach is equally beneficial to nano-specific ERA as for other classes of chemicals. Here we present the developing knowledge, practical considerations and key principles need to support exposure assessment for engineered nanomaterials for regulatory and research applications.
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Affiliation(s)
- Claus Svendsen
- UK Centre for Ecology and Hydrology, Wallingford, Oxfordshire, UK
| | - Lee A Walker
- UK Centre for Ecology and Hydrology, Lancaster Environment Centre, Lancaster, UK
| | - Marianne Matzke
- UK Centre for Ecology and Hydrology, Wallingford, Oxfordshire, UK
| | - Elma Lahive
- UK Centre for Ecology and Hydrology, Wallingford, Oxfordshire, UK
| | - Samuel Harrison
- UK Centre for Ecology and Hydrology, Lancaster Environment Centre, Lancaster, UK
| | - Alison Crossley
- Department of Materials, Oxford University, Begbroke Science Park, Oxford, UK
| | | | - Stephen Lofts
- UK Centre for Ecology and Hydrology, Lancaster Environment Centre, Lancaster, UK
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK
| | | | - Ralf Kaegi
- EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Alexander Gogos
- EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
- EMPA, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland
| | - Christof Asbach
- Department of Air Quality and Filtration, Institut für Energie- und Umwelttechnik e. V. (IUTA), Duisburg, Germany
| | - Geert Cornelis
- Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | - Nico W van den Brink
- Sub-department of Toxicology, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, The Netherlands
| | | | - David J Spurgeon
- UK Centre for Ecology and Hydrology, Wallingford, Oxfordshire, UK.
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13
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Carboni A, Gelabert A, Charron G, Faucher S, Lespes G, Sivry Y, Benedetti MF. Mobility and transformation of CdSe/ZnS quantum dots in soil: Role of the capping ligands and ageing effect. CHEMOSPHERE 2020; 254:126868. [PMID: 32348924 DOI: 10.1016/j.chemosphere.2020.126868] [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: 01/19/2020] [Revised: 04/03/2020] [Accepted: 04/20/2020] [Indexed: 06/11/2023]
Abstract
The increasing application of Quantum Dots (QDs) is cause of concern for the potential negative effects for the ecosystem, especially in soils that may act as a sink. In this study, soil leaching experiments were performed in quartz sand packed columns to investigate the behavior of core-shell CdSe/ZnS QDs coated with either small ligands (TGA-QDs) or more complex polymers (POAMA-QDs). Fluorescence emission was compared to mass spectrometric measurements to assess the nanoparticles (NPs) state in both the leachate (transported species) and porous media (deposited amounts). Although both QDs were strongly retained in the column, large differences were observed depending on their capping ligand stability. Specifically, for TGA-QDs elution was negligible and the retained fraction accumulated in the top-columns. Furthermore, 74% of the NPs were degraded and 38% of the Se was found in the leachate in non-NPs state. Conversely, POAMA-QDs were recovered to a larger extent (78.1%), and displayed a higher transport along the soil profile. Further experiments with altered NPs showed that homo-aggregation of the QDs prior injection determined a reduced mobility but no significant changes in their stability. Eventually, ageing of the NPs in the column (15 days) caused the disruption of up to 92% of the original QDs and the immobilization of NPs and metals. These results indicate that QDs will accumulate in top-soils, where transformations phenomena will determine the overall transport, persistency and degradation of these chemicals. Once accumulated, they may act as a source for potentially toxic Cd and Se metal species displaying enhanced mobility.
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Affiliation(s)
- A Carboni
- Université de Paris, Institut de Physique du Globe de Paris, UMR 7154, CNRS, F-75005, Paris, France; Centre de Recherche et d'Enseignement de Géosciences de l'Environnement, Technopole Environnement Arbois-Mediterranee, BP80, 13545, Aix-en-Provence Cedex 04, Aix-en-Provence, France.
| | - A Gelabert
- Université de Paris, Institut de Physique du Globe de Paris, UMR 7154, CNRS, F-75005, Paris, France
| | - G Charron
- Laboratoire Matière et Systèmes Complexes (MSC), Univ. Paris Diderot, 75013, Paris, France
| | - S Faucher
- Université de Pau et des Pays de l'Adour, CNRS, Institut des Sciences Analytiques et de Physico Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, Helioparc, 2 Avenue Pierre Angot, 64053, Pau, France
| | - G Lespes
- Université de Pau et des Pays de l'Adour, CNRS, Institut des Sciences Analytiques et de Physico Chimie pour l'Environnement et les Matériaux (IPREM), UMR 5254, Helioparc, 2 Avenue Pierre Angot, 64053, Pau, France
| | - Y Sivry
- Université de Paris, Institut de Physique du Globe de Paris, UMR 7154, CNRS, F-75005, Paris, France
| | - M F Benedetti
- Université de Paris, Institut de Physique du Globe de Paris, UMR 7154, CNRS, F-75005, Paris, France
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14
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Pradel A, Hadri HE, Desmet C, Ponti J, Reynaud S, Grassl B, Gigault J. Deposition of environmentally relevant nanoplastic models in sand during transport experiments. CHEMOSPHERE 2020; 255:126912. [PMID: 32408126 DOI: 10.1016/j.chemosphere.2020.126912] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/17/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Nanoplastics (NPTs) are defined as colloids that originated from the unintentional degradation of plastic debris. To understand the possible risks caused by NPTs, it is crucial to determine how they are transported and where they may finally accumulate. Unfortunately, although most sources of plastic are land-based, risk assessments concerning NPTs in the terrestrial environmental system (soils, aquifers, freshwater sediments, etc.) have been largely lacking compared to studies concerning NPTs in the marine system. Furthermore, an important limitation of environmental fate studies is that the NPT models used are questionable in terms of their environmental representativeness. This study describes the fate of different NPT models in a porous media under unfavorable (repulsive) conditions, according to their physical and chemical properties: average hydrodynamic diameters (200-460 nm), composition (polystyrene with additives or primary polystyrene) and shape (spherical or polymorphic). NPTs that more closely mimic environmental NPTs present an inhomogeneous shape (i.e., deviating from a sphere) and are more deposited in a sand column by an order of magnitude. This deposition was attributed in part to physical retention, as confirmed by the straining that occurred for the larger size fractions. Additionally, different Derjaguin-Landau-Verwey-Overbeek (DLVO) models -the extended DLVO (XDLVO) and a DLVO modified by surface element integration (SEI) method-suggest that the environmentally relevant NPT models may alter its orientation to diminish repulsion from the sand surface and may find enough kinetic energy to deposit in the primary energetic minimum. These results point to the importance of choosing environmentally relevant NPT models.
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Affiliation(s)
- Alice Pradel
- Univ Rennes, CNRS, Géosciences Rennes - UMR 6118, 35000, Rennes, France.
| | - Hind El Hadri
- CNRS/ Univ Pau & Pays Adour/ E2S UPPA, Institut des sciences analytiques et de physicochimie pour l'environnement et les matériaux, UMR 5254, 64000, Pau, France
| | - Cloé Desmet
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027, Ispra, VA, Italy
| | - Jessica Ponti
- European Commission, Joint Research Centre (JRC), Via E. Fermi 2749, 21027, Ispra, VA, Italy
| | - Stéphanie Reynaud
- CNRS/ Univ Pau & Pays Adour/ E2S UPPA, Institut des sciences analytiques et de physicochimie pour l'environnement et les matériaux, UMR 5254, 64000, Pau, France
| | - Bruno Grassl
- CNRS/ Univ Pau & Pays Adour/ E2S UPPA, Institut des sciences analytiques et de physicochimie pour l'environnement et les matériaux, UMR 5254, 64000, Pau, France
| | - Julien Gigault
- Univ Rennes, CNRS, Géosciences Rennes - UMR 6118, 35000, Rennes, France.
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15
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Bland GD, Lowry GV. Multistep Method to Extract Moderately Soluble Copper Oxide Nanoparticles from Soil for Quantification and Characterization. Anal Chem 2020; 92:9620-9628. [PMID: 32520530 DOI: 10.1021/acs.analchem.0c00824] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The objective of this study is to assess how method parameters impact the extraction of moderately soluble CuO nanoparticles (NPs) from a standard natural soil (LUFA 2.1) suitable for chemical analysis. The extraction procedure is comprised of three steps: (i) preconditioning the soil to increase the sodium adsorption ratio, (ii) extracting colloids/NPs from the soil matrix using sonication and a dispersing agent, and (iii) separating the dissolved and nanoparticulate CuO fractions using cloud point extraction. Method parameters of the extraction procedure, including sonication, number of extraction cycles, and dispersing agent, were adjusted to achieve the highest extraction of CuO NPs, while minimizing dissolution. The maximum recovery of CuO NPs ranged from 31% to 42% for an amended concentration range of 10-250 mg-Cu (kg soil)-1 using a preconditioning step to exchange divalent cations for monovalent ions, 0.2% carboxymethyl cellulose (CMC) 700 kg mol-1 as the dispersing agent, probe sonication for 1 min, 3 extraction cycles, and a 1:10 soil-to-liquid ratio. CuO NPs that are polyvinylpyrrolidone (PVP)-coated with a greater stability against aggregation had significantly higher extractability and dissolution. This procedure is the first to effectively extract moderately soluble NPs from soil and experimentally separate them from their dissolved fraction and can be applied to other moderately soluble metal containing natural, incidental, or engineered NPs in soil.
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Affiliation(s)
- Garret D Bland
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.,Center for Environmental Implications of NanoTechnology (CEINT), Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Gregory V Lowry
- Department of Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States.,Center for Environmental Implications of NanoTechnology (CEINT), Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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16
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Selmani A, Ulm L, Kasemets K, Kurvet I, Erceg I, Barbir R, Pem B, Santini P, Marion ID, Vinković T, Krivohlavek A, Sikirić MD, Kahru A, Vinković Vrček I. Stability and toxicity of differently coated selenium nanoparticles under model environmental exposure settings. CHEMOSPHERE 2020; 250:126265. [PMID: 32109702 DOI: 10.1016/j.chemosphere.2020.126265] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/13/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
This study, motivated to fill the knowledge gap on environmental safety of selenium nanoparticles (SeNPs), provides information on the stability and environmental safety of four differently coated SeNPs rendering both positive and negative surface charges. The stability and dissolution behaviour of SeNPs were determined in an aquatic model media of different ionic strength to provide information regarding the environmental fate of SeNPs in different environmental conditions. The environmental safety of SeNPs was evaluated by acute regulatory toxicity tests using Daphina magna and Vibrio fischeri as model organisms. Agglomeration was observed for all studied SeNPs in test media with higher ionic strength caused by the disruption of surface charge leading to electrostatic instability. Toxicity of SeNPs on both aquatic species was dose-dependent and increased with exposure time. The obtained data indicated that all of the tested SeNPs could be classified as harmful to the natural bacteria V. fischeri and harmful to toxic to crustaceans D. magna, but dependent on the coating agent used for SeNPs stabilization. Although SeNPs have attracted great interest for use in biomedicine, this study demonstrated that their ecotoxicological effects should be considered during the design of new of SeNPs-based products.
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Affiliation(s)
- Atiđa Selmani
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Lea Ulm
- Department of Environmental Protection and Health Ecology, Andrija Štampar Teaching Institute of Public Health, Mirogojska cesta 16, 10000, Zagreb, Croatia
| | - Kaja Kasemets
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
| | - Imbi Kurvet
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia
| | - Ina Erceg
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Rinea Barbir
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000, Zagreb, Croatia
| | - Barbara Pem
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000, Zagreb, Croatia
| | - Paula Santini
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Ida Delač Marion
- Center of Excellence for Advanced Materials and Sensing Devices, Institute of Physics, Bijenička 46, 10000, Zagreb, Croatia
| | - Tomislav Vinković
- University of Josip Juraj Strossmayer in Osijek, Faculty of Agrobiotechnical Sciences, Vladimira Preloga 1, 31000, Osijek, Croatia
| | - Adela Krivohlavek
- Department of Environmental Protection and Health Ecology, Andrija Štampar Teaching Institute of Public Health, Mirogojska cesta 16, 10000, Zagreb, Croatia
| | - Maja Dutour Sikirić
- Laboratory for Biocolloids and Surface Chemistry, Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000, Zagreb, Croatia
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618, Tallinn, Estonia; Estonian Academy of Sciences, Kohtu 6, 10130, Tallinn, Estonia.
| | - Ivana Vinković Vrček
- Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000, Zagreb, Croatia.
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17
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Crandon LE, Boenisch KM, Harper BJ, Harper SL. Adaptive methodology to determine hydrophobicity of nanomaterials in situ. PLoS One 2020; 15:e0233844. [PMID: 32492068 PMCID: PMC7269256 DOI: 10.1371/journal.pone.0233844] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 05/13/2020] [Indexed: 12/13/2022] Open
Abstract
The hydrophobicity of nanoparticles (NPs) is a key property determining environmental fate, biological partitioning and toxicity. However, methods to characterize surface hydrophobicity are not uniformly applied to NPs and cannot quantify surface changes in complex environments. Existing methods designed to evaluate the hydrophobicity of bulk solids, chemicals, and proteins have significant limitations when applied to NPs. In this study, we modified and evaluated two methods to determine the hydrophobicity of NPs, hydrophobic interaction chromatography (HIC) and dye adsorption, and compared them to the standard octanol-water partitioning protocol for chemicals. Gold, copper oxide, silica, and amine-functionalized silica NPs were used to evaluate methods based on their applicability to NPs that agglomerate and have surface coatings. The octanol water partitioning and HIC methods both measured Au NPs as hydrophilic, but despite having a small size and stable suspension, NPs could not be fully recovered from the HIC column. For the dye adsorption method, hydrophobic (Rose Bengal) and hydrophilic (Nile Blue) dyes were adsorbed to the NP surface, and linear isotherm parameters were used as a metric for hydrophobicity. CuO was determined to be slightly hydrophilic, while SiO2 was hydrophilic and Ami-SiO2 was hydrophobic. The advantages and limitations of each method are discussed, and the dye adsorption method is recommended as the most suitable for application across broad classes of nanomaterials. The dye assay method was further used to measure changes in the surface hydrophobicity of TiO2 NPs after being suspended in natural water collected from the Alsea Rivers watershed in Oregon. TiO2 NPs adsorbed Rose Bengal when suspended in ultrapure water, but adsorbed Nile Blue after being incubated in natural water samples, demonstrating a shift from hydrophobic to hydrophilic properties on the outer surface. The dye adsorption method can be applied to characterize surface hydrophobicity of NPs and quantify environmental transformations, potentially improving environmental fate models.
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Affiliation(s)
- Lauren E Crandon
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, United States of America
| | - Kylie M Boenisch
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, United States of America
| | - Bryan J Harper
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon, United States of America
| | - Stacey L Harper
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, United States of America.,Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon, United States of America.,Oregon Nanoscience and Microtechnologies Institute, Corvallis, Oregon, United States of America
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18
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Dong F, Zhou Y. Distinct mechanisms in the heteroaggregation of silver nanoparticles with mineral and microbial colloids. WATER RESEARCH 2020; 170:115332. [PMID: 31810034 DOI: 10.1016/j.watres.2019.115332] [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: 09/11/2019] [Revised: 11/17/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
Attachment to solids is an important process for determining nanomaterial transport and their fate in environments. Here we revealed distinct behaviours in the attachment of silver nanoparticles (AgNPs) to kaolin and bacterial cells. We found preferential attachment of AgNPs to the edges of kaolin. Decreasing pH or adding metal ions promoted AgNP-kaolin attachment due to the increase of positive charge on kaolin's surfaces. Multivalent cations (Mg2+ and Ca2+) induced stronger enhancement than monovalent cations (Na+, K+ and Ag+), which demonstrated the positive role of electrostatic interaction in AgNP-kaolin attachment. However, the presence of metal ions inhibited AgNP binding to bacterial cells. The inhibitive effect was significantly correlated with solubility product of metal ions, which implied a chemical reaction mechanism in AgNP-cell attachment. In kaolin system, humic acid (HA) can considerably inhibit AgNP attachment and diminish the enhanced effects induced by metal ions. In contrast, in bacterial cell system, HA reduced the inhibitive effect of metal ions for AgNP adsorption, although HA itself had negligible effect on AgNP-cell attachment. Taken together, our results demonstrated the contribution of electrostatic attraction versus chemical interaction to the attachment of AgNPs to kaolin or bacterial cells, providing fundamental support to understand the attachment of nanomaterials to inorganic and organic solids in the environments.
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Affiliation(s)
- Feng Dong
- School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore; Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 637141, Singapore
| | - Yan Zhou
- School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore; Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 637141, Singapore.
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19
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Song Z, Yang X, Chen F, Zhao F, Zhao Y, Ruan L, Wang Y, Yang Y. Fate and transport of nanoplastics in complex natural aquifer media: Effect of particle size and surface functionalization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 669:120-128. [PMID: 30878920 DOI: 10.1016/j.scitotenv.2019.03.102] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/19/2019] [Accepted: 03/07/2019] [Indexed: 05/20/2023]
Abstract
Environmental processes of nanoplastics in heterogeneous natural groundwater systems remain unclear. In this study, the control of particle size and surface functional groups on the fate and transport of nanoplastics in an organic matter (OM) rich aquifer was explored using batch and column tests. The carboxyl-modified 200 nm (200CNP), carboxyl-modified 50 nm (50CNP), and amino-modified 50 nm (50ANP) polystyrene latex beads were used as surrogates for nanoplastics of contrasting sizes and surface functional groups. Aquifer sand and natural groundwater sampled from an agriculture-impacted shallow sandy aquifer were processed to obtain granule beds with/out surface minerals and groundwater containing different-sized fractions of OM. Results show that particle size controlled the hetero-aggregation rate of nanoplastics with OM and Ca2+: a larger size resulting in a lower reaction rate led to a higher stability of 200CNP than 50CNP and 50ANP. Meanwhile, surface functional groups appeared to affect the affinity of OM and Ca2+ to nanoplastics, i.e. the amino group allowed the adsorption of dissolved OM on the particle but inhibited the adsorption of Ca2+ and suspended OM, while the carboxyl group allowed adsorption of the all. The resulting variable OM coatings formed on the different nanoplastics played a critical role in determining the particle stability and mobility, i.e. the suspended OM increased both the particle stability and mobility while the dissolved OM reduced both. These findings suggest that: 1. Depending on the OM properties, the influence of particle size and surface group on the nanoplastic processes might be secondary to the OM impact; 2. In evaluating the OM impact, not only the OM concentration but also the size and surface physiochemistry of the OM should be characterized. The insight gained is important to predict the concentration evolution pattern of weathered nanoplastics in OM-impacted sandy aquifers.
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Affiliation(s)
- Zefeng Song
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China; Institute of Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China
| | - Xinyao Yang
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China.
| | - Fangmin Chen
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China; Liaoning Provincial Key Lab of Urban Integrated Pest Management and Ecological Security, Shenyang University, Shenyang 110044, China
| | - Fangyuan Zhao
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China
| | - Ying Zhao
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China
| | - Lili Ruan
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China
| | - Yinggang Wang
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China
| | - Yuesuo Yang
- Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China
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20
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Degenkolb L, Dippon U, Pabst S, Klitzke S. Transport and retention of differently coated CeO 2 nanoparticles in saturated sediment columns under laboratory and near-natural conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:15905-15919. [PMID: 30963436 PMCID: PMC6533415 DOI: 10.1007/s11356-019-04965-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/22/2019] [Indexed: 06/09/2023]
Abstract
Where surface-functionalized engineered nanoparticles (NP) occur in drinking water catchments, understanding their transport within and between environmental compartments such as surface water and groundwater is crucial for risk assessment of drinking water resources. The transport of NP is mainly controlled by (i) their surface properties, (ii) water chemistry, and (iii) surface properties of the stationary phase. Therefore, functionalization of NP surfaces by organic coatings may change their fate in the environment. In laboratory columns, we compared the mobility of CeO2 NP coated by the synthetic polymer polyacrylic acid (PAA) with CeO2 NP coated by natural organic matter (NOM) and humic acid (HA), respectively. The effect of ionic strength on transport in sand columns was investigated using deionized (DI) water and natural surface water with 2.2 mM Ca2+ (soft) and 4.5 mM Ca2+ (hard), respectively. Furthermore, the relevance of these findings was validated in a near-natural bank filtration experiment using HA-CeO2 NP. PAA-CeO2 NP were mobile under all tested water conditions, showing a breakthrough of 60% irrespective of the Ca2+ concentration. In contrast, NOM-CeO2 NP showed a lower mobility with a breakthrough of 27% in DI and < 10% in soft surface water. In hard surface water, NOM-CeO2 NP were completely retained in the first 2 cm of the column. The transport of HA-CeO2 NP in laboratory columns in soft surface water was lower compared to NOM-CeO2 NP with a strong accumulation of CeO2 NP in the first few centimeters of the column. Natural coatings were generally less stabilizing and more susceptible to increasing Ca2+ concentrations than the synthetic coating. The outdoor column experiment confirmed the low mobility of HA-CeO2 NP under more complex environmental conditions. From our experiments, we conclude that the synthetic polymer is more efficient in facilitating NP transport than natural coatings and hence, CeO2 NP mobility may vary significantly depending on the surface coating.
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Affiliation(s)
- Laura Degenkolb
- Section Drinking Water Treatment and Resource Protection, German Environment Agency, Schichauweg 58, 12307 Berlin, Germany
- Department of Soil Science, Institute of Ecology, Berlin University of Technology, Ernst-Reuter Platz 1, 10587 Berlin, Germany
| | - Urs Dippon
- Section Drinking Water Treatment and Resource Protection, German Environment Agency, Schichauweg 58, 12307 Berlin, Germany
| | - Silke Pabst
- Section Drinking Water Treatment and Resource Protection, German Environment Agency, Schichauweg 58, 12307 Berlin, Germany
| | - Sondra Klitzke
- Section Drinking Water Treatment and Resource Protection, German Environment Agency, Schichauweg 58, 12307 Berlin, Germany
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21
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Hedberg J, Blomberg E, Odnevall Wallinder I. In the Search for Nanospecific Effects of Dissolution of Metallic Nanoparticles at Freshwater-Like Conditions: A Critical Review. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:4030-4044. [PMID: 30908015 DOI: 10.1021/acs.est.8b05012] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Knowledge on relations between particle properties and dissolution/transformation characteristics of metal and metal oxide nanoparticles (NPs) in freshwater is important for risk assessment and product development. This critical review aims to elucidate nanospecific effects on dissolution of metallic NPs in freshwater and similar media. Dissolution rate constants are compiled and analyzed for NPs of silver (Ag), copper (Cu), copper oxide/hydroxide (CuO, Cu(OH)2), zinc oxide (ZnO), manganese (Mn), and aluminum (Al), showing largely varying (orders of magnitude) constants when modeled using first order kinetics. An effect of small primary sizes (<15 nm) was observed, leading to increased dissolution rate constants and solubility in some cases. However, the often extensive particle agglomeration can result in reduced nanospecific effects on dissolution and also an increased uncertainty related to the surface area, a parameter that largely influence the extent of dissolution. Promising ways to model surface areas of NPs in solution using fractal dimensions and size distributions are discussed in addition to nanospecific aspects related to other processes such as corrosion, adsorption of natural organic matter (NOM), presence of capping agents, and existence of surface defects. The importance of the experimental design on the results of dissolution experiments of metal and metal oxide NPs is moreover highlighted, including the influence of ionic metal solubility and choice of particle dispersion methodology.
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Affiliation(s)
- Jonas Hedberg
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry , Division of Surface and Corrosion Science , Stockholm , Sweden
| | - Eva Blomberg
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry , Division of Surface and Corrosion Science , Stockholm , Sweden
- RISE Research Institutes of Sweden , Division Bioscience and Materials , Stockholm , Sweden
| | - Inger Odnevall Wallinder
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry , Division of Surface and Corrosion Science , Stockholm , Sweden
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22
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Mitrano DM, Beltzung A, Frehland S, Schmiedgruber M, Cingolani A, Schmidt F. Synthesis of metal-doped nanoplastics and their utility to investigate fate and behaviour in complex environmental systems. NATURE NANOTECHNOLOGY 2019; 14:362-368. [PMID: 30718833 PMCID: PMC6451641 DOI: 10.1038/s41565-018-0360-3] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 12/21/2018] [Indexed: 05/22/2023]
Abstract
Research on the distribution and effects of particulate plastic has intensified in recent years and yet, due to analytical challenges, our understanding of nanoplastic occurrence and behaviour has remained comparatively elusive. However, process studies could greatly aid in defining key parameters for nanoplastic interactions within and transfers between technical and environmental compartments. Here we provide a method to synthesize nanoplastic particles doped with a chemically entrapped metal used as a tracer, which provides a robust way to detect nanoplastics more easily, accurately and quantitatively in complex media. We show the utility of this approach in batch studies that simulate the activated sludge process of a municipal waste water treatment plant and so better understand the fate of nanoplastics in urban environments. We found that the majority of particles were associated with the sludge (>98%), with an average recovery of over 93% of the spiked material achieved. We believe that this approach can be developed further to study the fate, transport, mechanistic behaviour and biological uptake of nanoplastics in a variety of systems on different scales.
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Affiliation(s)
- Denise M Mitrano
- Process Engineering, Eawag - Swiss Federal Institute of Aquatic Science and Technology, Process Engineering, Dubendorf, Switzerland.
| | - Anna Beltzung
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Stefan Frehland
- Process Engineering, Eawag - Swiss Federal Institute of Aquatic Science and Technology, Process Engineering, Dubendorf, Switzerland
| | - Michael Schmiedgruber
- Process Engineering, Eawag - Swiss Federal Institute of Aquatic Science and Technology, Process Engineering, Dubendorf, Switzerland
| | - Alberto Cingolani
- Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Zurich, Switzerland
| | - Felix Schmidt
- Process Engineering, Eawag - Swiss Federal Institute of Aquatic Science and Technology, Process Engineering, Dubendorf, Switzerland
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23
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Geitner NK, Bossa N, Wiesner MR. Formulation and Validation of a Functional Assay-Driven Model of Nanoparticle Aquatic Transport. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:3104-3109. [PMID: 30816037 DOI: 10.1021/acs.est.8b06283] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Here, we present a model for the prediction of nanoparticle fate in aquatic environments, parametrized using functional assays that take into account conditions of the environmental media and nanoparticle properties. The model was used to explore scenarios for five nanomaterials in a freshwater wetland setting and compared with experimental results obtained in mesocosm studies. Material characteristics used in the model were size, density, dissolution rate constants, and surface attachment efficiencies. Model predictions and experimentally measured removal rate constants from the water column were strongly correlated, with Pearson correlation coefficient 0.993. Further, the model predicted removal rate constants quantitively very close to measured rates. Of particular importance for accurate predictions were two key processes beyond the usual heteroaggregation with suspended solids. These were homoaggregation of nanomaterials and nanomaterial attachment to aquatic plant surfaces. These results highlight the importance of including all relevant aggregation and deposition processes over short time scales for nanoparticle transport, while demonstrating the utility of functional assays for surface attachment as model inputs.
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24
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Clavier A, Praetorius A, Stoll S. Determination of nanoparticle heteroaggregation attachment efficiencies and rates in presence of natural organic matter monomers. Monte Carlo modelling. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:530-540. [PMID: 30205343 DOI: 10.1016/j.scitotenv.2018.09.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/31/2018] [Accepted: 09/02/2018] [Indexed: 06/08/2023]
Abstract
Understanding the transformation and transport of manufactured nanoparticles (NPs) in aquatic systems remains an important issue due to their potential hazard. Once released in aquatic systems, NPs will interact with natural compounds such as suspended inorganic particles and/or natural organic matter (NOM) and heteroaggregation will control their ultimate fate. Unfortunately, systematic experimental methods to study heteroaggregation are not straightforward and still scarce. In addition, the description of heteroaggregation rate constants and attachment efficiencies is still a matter of debate since no clear definition exists. In this work, an original cluster-cluster Monte Carlo model is developed to get an insight into heteroaggregation process descriptions. A two-component system composed of NPs and NOM fulvic acid monomers is investigated by considering several water models to cover a range of (relevant) conditions from fresh to marine waters. For that purpose, homo- and hetero- individual attachment efficiencies between NPs and NOM units are adjusted (NP-NP, NOM-NOM and NP-NOM). The influence of NP/NOM ratio, NOM-NOM homoaggregation versus heteroaggregation, and surface coating effects is studied systematically. From a quantitative point of view, aggregation rate constants as well as attachment efficiencies are calculated as a function of physical time so as to characterize the individual influence of each parameter and to allow future comparison with experimental data. Heteroaggregation processes and global attachment efficiencies corresponding to several mechanisms and depending on the evolution of heteroaggregate structures all along the simulations are defined. The calculation of attachment efficiency values is found dependent on NP/NOM concentration ratios via coating effects, by the initial set of elementary attachment efficiencies and influence of homoaggregation. Marine water represents a specific case of aggregation where all particle contacts are effective. On the other hand, in "ultrapure" and "fresh waters", a competition between homo- and heteroaggregation occurs depending on the initial attachment efficiencies therefore indicating that a subtle change in the NP surface properties as well as in the water chemistry have a significant impact on heteroaggregation processes.
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Affiliation(s)
- Arnaud Clavier
- University of Geneva, Institute of Environmental Science, Department F.-A. Forel for Environmental and Aquatic Sciences, Group of Environmental Physical Chemistry, Uni Carl Vogt, 66, boulevard Carl-Vogt, CH-1211 Geneva 4, Switzerland.
| | - Antonia Praetorius
- University of Vienna, Department of Environmental Geosciences and Environmental Science Research Network, Althanstr. 14 UZA2, 1090 Vienna, Austria.
| | - Serge Stoll
- University of Geneva, Institute of Environmental Science, Department F.-A. Forel for Environmental and Aquatic Sciences, Group of Environmental Physical Chemistry, Uni Carl Vogt, 66, boulevard Carl-Vogt, CH-1211 Geneva 4, Switzerland.
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25
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Johnson CA, Chern M, Nguyen TT, Dennis AM, Goldfarb JL. Ligands and media impact interactions between engineered nanomaterials and clay minerals. NANOIMPACT 2019; 13:112-122. [PMID: 31819907 PMCID: PMC6901284 DOI: 10.1016/j.impact.2019.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The exponential growth in technologies incorporating engineered nanomaterials (ENMs) requires plans to handle waste ENM disposal and accidental environmental release throughout the material life cycle. These scenarios motivate efforts to quantify and model ENM interactions with diverse background particles and solubilized chemical species in a variety of environmental systems. In this study, quantum dot (QD) nanoparticles and clay minerals were mixed in a range of water chemistries in order to develop simple assays to predict aggregation trends. CdSe QDs were used as a model ENM functionalized with either negatively charged or zwitterionic small molecule ligand coatings, while clays were chosen as an environmentally relevant sorbent given their potential as an economical water treatment technology and ubiquitous presence in nature. In our unbuffered experimental systems, clay type impacted pH, which resulted in a change in zwitterionic ligand speciation that favored aggregation with kaolinite more than with montmorillonite. With kaolinite, the zwitterionic ligand-coated QD exhibited greater than ten times the relative attachment efficiency for QD-clay heteroaggregation compared to the negatively charged ligand coated QD. Under some conditions, particle oxidative dissolution and dynamic sorption of ions and QDs to surfaces complicated the interpretation of the removal kinetics. This work demonstrates that QDs stabilized by small molecule ligands and electrostatic surface charges are highly sensitive to changes in water chemistry in complex media. Natural environments enable rapid dynamic physicochemical changes that will influence the fate and mobility of ENMs, as seen by the differential adsorption of water-soluble QDs to our clay media.
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Affiliation(s)
- Carol A Johnson
- Department of Mechanical Engineering, Boston University, Boston, MA 02215
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215
| | - Margaret Chern
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215
| | - Thuy T Nguyen
- Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Allison M Dennis
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215
- Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Jillian L Goldfarb
- Department of Mechanical Engineering, Boston University, Boston, MA 02215
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853
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26
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Geitner NK, Cooper JL, Avellan A, Castellon BT, Perrotta BG, Bossa N, Simonin M, Anderson SM, Inoue S, Hochella MF, Richardson CJ, Bernhardt ES, Lowry GV, Ferguson PL, Matson CW, King RS, Unrine JM, Wiesner MR, Hsu-Kim H. Size-Based Differential Transport, Uptake, and Mass Distribution of Ceria (CeO 2) Nanoparticles in Wetland Mesocosms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:9768-9776. [PMID: 30067347 DOI: 10.1021/acs.est.8b02040] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Trace metals associated with nanoparticles are known to possess reactivities that are different from their larger-size counterparts. However, the relative importance of small relative to large particles for the overall distribution and biouptake of these metals is not as well studied in complex environmental systems. Here, we have examined differences in the long term fate and transport of ceria (CeO2) nanoparticles of two different sizes (3.8 vs 185 nm), dosed weekly to freshwater wetland mesocosms over 9 months. While the majority of CeO2 particles were detected in soils and sediments at the end of nine months, there were significant differences observed in fate, distribution, and transport mechanisms between the two materials. Small nanoparticles were removed from the water column primarily through heteroaggregation with suspended solids and plants, while large nanoparticles were removed primarily by sedimentation. A greater fraction of small particles remained in the upper floc layers of sediment relative to the large particles (31% vs 7%). Cerium from the small particles were also significantly more bioavailable to aquatic plants (2% vs 0.5%), snails (44 vs 2.6 ng), and insects (8 vs 0.07 μg). Small CeO2 particles were also significantly reduced from Ce(IV) to Ce(III), while aquatic sediments were a sink for untransformed large nanoparticles. These results demonstrate that trace metals originating from nanoscale materials have much greater potential than their larger counterparts to distribute throughout multiple compartments of a complex aquatic ecosystem and contribute to the overall bioavailable pool of the metal for biouptake and trophic transfer.
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Affiliation(s)
- Nicholas K Geitner
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil and Environmental Engineering Department , Duke University , Durham , North Carolina 27708 , United States
| | - Jane L Cooper
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil and Environmental Engineering Department , Duke University , Durham , North Carolina 27708 , United States
| | - Astrid Avellan
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil & Environmental Engineering , Carnegie Mellon University , Pittsburgh , Pennsylvania 15213 , United States
| | - Benjamin T Castellon
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Environmental Science , Baylor University , Waco , Texas 76706 , United States
| | - Brittany G Perrotta
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Biology , Baylor University , Waco , Texas 76706 , United States
| | - Nathan Bossa
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil and Environmental Engineering Department , Duke University , Durham , North Carolina 27708 , United States
| | - Marie Simonin
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Biology , Duke University , Durham , North Carolina 27708 , United States
| | - Steven M Anderson
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Biology , Duke University , Durham , North Carolina 27708 , United States
| | - Sayako Inoue
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Geosciences , Virginia Polytechnic Institute and State University , Blacksburg , Virginia 24061 , United States
| | - Michael F Hochella
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Geosciences , Virginia Polytechnic Institute and State University , Blacksburg , Virginia 24061 , United States
- Energy and Environment Directorate Pacific Northwest National Laboratory Richland , Washington 99354 , United States
| | - Curtis J Richardson
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Nicholas School of the Environment , Duke University , Durham , North Carolina 27708 , United States
| | - Emily S Bernhardt
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Biology , Duke University , Durham , North Carolina 27708 , United States
| | - Gregory V Lowry
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil & Environmental Engineering , Carnegie Mellon University , Pittsburgh , Pennsylvania 15213 , United States
| | - P Lee Ferguson
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil and Environmental Engineering Department , Duke University , Durham , North Carolina 27708 , United States
| | - Cole W Matson
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Environmental Science , Baylor University , Waco , Texas 76706 , United States
| | - Ryan S King
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Biology , Baylor University , Waco , Texas 76706 , United States
| | - Jason M Unrine
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Plant and Soil Sciences , University of Kentucky , Lexington , Kentucky 40506 , United States
| | - Mark R Wiesner
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil and Environmental Engineering Department , Duke University , Durham , North Carolina 27708 , United States
| | - Heileen Hsu-Kim
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , North Carolina 27708 , United States
- Civil and Environmental Engineering Department , Duke University , Durham , North Carolina 27708 , United States
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27
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Espinasse BP, Geitner NK, Schierz A, Therezien M, Richardson CJ, Lowry GV, Ferguson L, Wiesner MR. Comparative Persistence of Engineered Nanoparticles in a Complex Aquatic Ecosystem. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:4072-4078. [PMID: 29505250 DOI: 10.1021/acs.est.7b06142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
During nanoparticle environmental exposure, presence in the water column is expected to dominate long distance transport as well as initial aquatic organism exposure. Much work has been done to understand potential ecological and toxicological effects of these particles. However, little has been done to date to understand the comparative persistence of engineered particles in realistic environmental systems. Presented here is a study of the water column lifetimes of 3 different classes of nanoparticles prepared with a combination of surface chemistries in wetland mesocosms. We find that, when introduced as a single pulse, all tested nanoparticles persist in the water column for periods ranging from 36 h to 10 days. Specifically, we found a range of nanoparticle residence times in the order Ag > TiO2 > SWCNT > CeO2. We further explored the hypothesis that heteroaggregation was the primary driving factor for nanoparticle removal from the water column in all but one case, and that values of surface affinity (α) measured in the laboratory appear to predict relative removal rates when heteroaggregation dominates. Though persistence in the water column was relatively short in all cases, differences in persistence may play a role in determining nanoparticle fate and impacts and were poorly predicted by currently prevailing benchmarks such as particle surface preparation.
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Affiliation(s)
- Benjamin P Espinasse
- Civil and Environmental Engineering Department , Duke University , Durham , 27708 North Carolina , United States
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
| | - Nicholas K Geitner
- Civil and Environmental Engineering Department , Duke University , Durham , 27708 North Carolina , United States
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
| | - Ariette Schierz
- Civil and Environmental Engineering Department , Duke University , Durham , 27708 North Carolina , United States
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
| | - Mathieu Therezien
- Civil and Environmental Engineering Department , Duke University , Durham , 27708 North Carolina , United States
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
| | - Curtis J Richardson
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
- Nicholas School of the Environment , Duke University , Durham , 27708 North Carolina , United States
| | - Gregory V Lowry
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
- Civil & Environmental Engineering , Carnegie Mellon University , Pittsburgh , 15213 Pennsylvania , United States
| | - Lee Ferguson
- Civil and Environmental Engineering Department , Duke University , Durham , 27708 North Carolina , United States
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
| | - Mark R Wiesner
- Civil and Environmental Engineering Department , Duke University , Durham , 27708 North Carolina , United States
- Center for the Environmental Implications of Nanotechnology , Duke University , Durham , 27708 North Carolina , United States
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