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Venciguerra LS, Lima GDS, da Silva ICP, Gemeiner H, Zanatta MBT, Menegário AA. Fractionation and speciation of metals in lakes formed by abandoned clay pits from industrial effluents (Santa Gertrudes, São Paulo, Brazil) using the diffusive gradient in thin films (DGT) technique. Chemosphere 2023; 341:139948. [PMID: 37648170 DOI: 10.1016/j.chemosphere.2023.139948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/21/2023] [Accepted: 08/22/2023] [Indexed: 09/01/2023]
Abstract
Environmental impacts caused by mining activities (mainly tailings and effluents) are presenting serious challenges for humanity worldwide. In Brazil, clay extraction activities in the Ceramic District of Santa Gertrudes (CDSG) have led to the formation of abandoned drainage wells causing environmental and human health concerns. In the 90's, it was discovered that in one of the production areas, known as the region of the lakes of Santa Gertrudes, several ceramic industries had contaminated lakes created by abandoned clay pits with industrial effluents containing toxic metals. In the present study, analysis of total and dissolved concentrations of Al, Cd, Co, Cu, Mn, Ni, Pb and Zn in the waters of these lakes were combined with the diffusive gradients in thin films (DGT) technique to assess the lability and bioavailability of the target elements, representing one of the first studies to investigate the real environmental impact of contamination caused by ceramic production wastes to an aquatic system. Furthermore, based on the total concentrations and main physicochemical characteristics of each lake, a speciation analysis was performed using the MINTEQ software which data was compared with other surface water systems. The results indicated the presence of metals associated with ceramic residues in total, dissolved and labile fractions. It was verified that Zn, Ni and Cu were the only target metals found in labile form and according to speciation were present in the form of "free" ions, and thus may present risk in terms of bioavailability, although the majority of the total concentrations are within the limits established by the national environmental agency.
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Affiliation(s)
- Lucas Souza Venciguerra
- Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil.
| | - Guilherme Dos Santos Lima
- Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil
| | | | - Hendryk Gemeiner
- Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil; Basin Studies Laboratory (LEBAC), São Paulo State University (UNESP), Avenida 24-A, 1515, 13506-900, Rio Claro, SP, Brazil
| | | | - Amauri Antonio Menegário
- Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil.
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Chakraborty P, Manek A, Chakraborty S, Hudson J, Niyogi S. Investigating the combined effects of pH changes and UV radiation exposure on dissolved metal-humate complexes: an important process in aquatic systems. Environ Sci Pollut Res Int 2023; 30:58189-58199. [PMID: 36976468 DOI: 10.1007/s11356-023-26178-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 02/24/2023] [Indexed: 05/10/2023]
Abstract
An in vitro study was carried out to examine the impact of UV exposure on metal-dissolved humic material (M-DHM) complexes in aqueous systems at different pH. Complexation reactions of dissolved M (Cu, Ni, and Cd) with DHM increased with the increasing pH of the solution. Kinetically inert M-DHM complexes dominated at higher pH in the test solutions. Exposure to UV radiation did affect the chemical speciation of M-DHM complexes at different pH of the systems. The overall observation suggests that exposure to increasing UV radiation increased the lability, mobility, and bioavailability of M-DHM complexes in aquatic environments. The dissociation rate constant of Cu-DHM was found to be slower than Ni-DHM and Cd-DHM complexes (both before and after UV exposure). At a higher pH range, Cd-DHM complexes dissociated after exposure to UV radiation and a part of this dissociated Cd precipitated out from the system. No change in the lability of the produced Cu-DHM and Ni-DHM complexes after UV radiation exposure was observed. They did not appear to form new kinetically inert complexes even after 12 h of exposure. The outcome of this research has important global implications. The results of this study helped to understand DHM leachability from soil and its effect on dissolved metal concentrations in the Northern Hemisphere water bodies. The results of this study also facilitated to comprehend the fate of M-DHM complexes at photic depths (where pH changes are accompanied by high UV radiation exposure) in tropical marine/freshwater systems during summer.
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Affiliation(s)
- Parthasarathi Chakraborty
- Marine Trace Metal Biogeochemistry Laboratory, The Centre for Ocean, River, Atmosphere and Land Sciences (CORAL), Indian Institute of Technology, Kharagpur, West Bengal, 721302, India.
| | - Aditya Manek
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Sucharita Chakraborty
- Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur, West Bengal, 721302, India
| | - Jeff Hudson
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Som Niyogi
- Department of Biology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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3
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Montavon G, Ribet S, Loni YH, Maia F, Bailly C, David K, Lerouge C, Madé B, Robinet JC, Grambow B. Uranium retention in a Callovo-Oxfordian clay rock formation: From laboratory-based models to in natura conditions. Chemosphere 2022; 299:134307. [PMID: 35339522 DOI: 10.1016/j.chemosphere.2022.134307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/08/2022] [Accepted: 03/11/2022] [Indexed: 06/14/2023]
Abstract
For the performance assessment of radioactive waste disposal, it is critical to predict the mobility of radionuclides in the geological barrier that hosts it. A key challenge consists of assessing the transferability of current knowledge on the retention properties deduced from model systems to in natura situations. The case of the redox-sensitive element uranium in the Callovo-Oxfordian clay formation (COx) is presented herein. Extensive experimental work was carried out with respect to parameters affecting uranium speciation (pH, PCO2, [Ca] and redox potential) with illite, COx clay fraction and raw COx claystone. The "bottom-up" approach implemented, with illite and montmorillonite as reactive phases, quantitatively explains the adsorption results of U(VI) and U(IV) on COx. While retention is high for U(IV) (Rd∼104 L kg-1), it remains very low for U(VI) (Rd∼4 L kg-1) due to the formation of soluble ternary Ca(Mg)-U(VI)-carbonate complexes. The applicability of the sorption model was then assessed by comparing predictive analyses with data characterizing the behavior of naturally-occurring U (<3 mg kg-1). The COx clay phase is the largest reservoir of naturally-occurring U (∼65%) but only a small fraction appears to be adsorbed (∼1%). Under representative site conditions (especially with respect to reducing conditions), we have concluded that ternary U(VI) complexes control U speciation in solution while U(IV) surface species dominate U adsorption, with Rd values > 70 L kg-1.
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Affiliation(s)
- G Montavon
- SUBATECH, IMTA/CNRS-IN2P3/Université de Nantes, 4, rue Alfred Kastler, F- 44304, Nantes, France.
| | - S Ribet
- SUBATECH, IMTA/CNRS-IN2P3/Université de Nantes, 4, rue Alfred Kastler, F- 44304, Nantes, France
| | - Y Hassan Loni
- SUBATECH, IMTA/CNRS-IN2P3/Université de Nantes, 4, rue Alfred Kastler, F- 44304, Nantes, France
| | - F Maia
- SUBATECH, IMTA/CNRS-IN2P3/Université de Nantes, 4, rue Alfred Kastler, F- 44304, Nantes, France
| | - C Bailly
- SUBATECH, IMTA/CNRS-IN2P3/Université de Nantes, 4, rue Alfred Kastler, F- 44304, Nantes, France
| | - K David
- SUBATECH, IMTA/CNRS-IN2P3/Université de Nantes, 4, rue Alfred Kastler, F- 44304, Nantes, France
| | - C Lerouge
- BRGM, 3 avenue Claude Guillemin, F-45060, Orléans, France
| | - B Madé
- ANDRA, 1/7 rue Jean Monnet, Parc de la Croix-Blanche, F-92298, Châtenay-Malabry, France
| | - J C Robinet
- ANDRA, 1/7 rue Jean Monnet, Parc de la Croix-Blanche, F-92298, Châtenay-Malabry, France
| | - B Grambow
- SUBATECH, IMTA/CNRS-IN2P3/Université de Nantes, 4, rue Alfred Kastler, F- 44304, Nantes, France
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da Silva Farias PG, da Silva Souza CB, Rosset JS, Ozório JMB, Panachuki E, Schiavo JA, Lima PR, Marra LM. Physical fractions of organic matter and mineralizable soil carbon as quality indicators in areas under different forms of use in the Cerrado-Pantanal Ecotone. Environ Monit Assess 2022; 194:517. [PMID: 35731303 DOI: 10.1007/s10661-022-10163-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 05/28/2022] [Indexed: 06/15/2023]
Abstract
Understanding soil organic matter (SOM) dynamics is essential to employ management that contribute to the improvement of soil quality (SQ). The aim of this study was to characterize the SOM and evaluate the emission of mineralizable C (C-CO2) in different management systems. The soil was collected in five managed areas: exposed soil (ES), conventional tillage system (CTS), no-tillage system (NTS), permanent pasture (PP) and sugarcane (SC), in addition to a forest area (NF), in the layers of 0-5, 5-10, and 10-20 cm. Total organic carbon (TOC), physical-granulometric fractionation of SOM were performed, determining the contents and stocks of particulate organic matter (C-POM; StockPOM) and mineral organic matter (C-MOM; StockMOM), in addition to calculating SQ indices. In addition to C-CO2 emissions from the soil. The areas of PP and NTS presented the highest levels of TOC in the surface layer. The highest levels of C-MOM and StockMOM were observed in the PP area, besides higher CSI (carbon stock index), reaching 1.67 in the 10-20 cm layer. The areas of PP and SC were similar to the NF in all layers regarding CMI (carbon management index). In CTS, there were higher peaks in emissions and accumulation of C-CO2. It is evident that the improvements in the SQ in the areas of PP, SC, and NTS caused mainly by the deposition of plant material and by soil revolving not being performed. In the CTS, high emission peaks of C-CO2 show that the lack of conservation management practices contributes to the emission of greenhouse gases.
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Affiliation(s)
| | | | - Jean Sérgio Rosset
- State University of Mato Grosso Do Sul, University Unit, Mundo Novo, MS, 79980-000, Brazil
| | | | - Elói Panachuki
- State University of Mato Grosso Do Sul, Aquidauana University Unit, Aquidauana, MS, 79200-000, Brazil
| | - Jolimar Antonio Schiavo
- State University of Mato Grosso Do Sul, Aquidauana University Unit, Aquidauana, MS, 79200-000, Brazil
| | - Paulo Ricardo Lima
- State University of Mato Grosso Do Sul, University Unit, Mundo Novo, MS, 79980-000, Brazil
| | - Leandro Marciano Marra
- State University of Mato Grosso Do Sul, University Unit, Mundo Novo, MS, 79980-000, Brazil
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Rosales-Segovia K, Sans-Duñó J, Companys E, Puy J, Alcalde B, Anticó E, Fontàs C, Galceran J. Effective concentration signature of Zn in a natural water derived from various speciation techniques. Sci Total Environ 2022; 806:151201. [PMID: 34699815 DOI: 10.1016/j.scitotenv.2021.151201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 10/09/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
The uptake of nutrients or toxicants by different organisms in aquatic systems is known to correlate with different fractions of the nutrient's or toxicant's total concentration. These fractions can be provided by different analytical techniques, from which the better correlation is expected to be found for those with a characteristic length comparable to that in the considered organism uptake. An effective concentration signature can be built up with the concentration values associated to the availability (i.e. fluxes in dynamic techniques) of the nutrient or toxicant measured by various analytical techniques with different characteristic lengths. Here, this new representation was obtained for the pool of Zn complexes in the Mediterranean stream Riera d'Osor (Girona, Catalonia, Spain) with a suite of four analytical techniques. Absence of Gradients and Nernstian Equilibrium Stripping (AGNES) and Polymer Inclusion Membrane (PIM) devices provided the free Zn concentration. Linear Anodic Stripping Voltammetry provided a labile fraction (defined here as cLASV, higher than the free concentration), related to the diffusion layer scale. Diffusion Gradients in Thin-films provided higher labile fractions (known as DGT concentrations, cDGT) connected to the different characteristic lengths of different configurations (e.g. one or two resin discs) longer, in any case, than that corresponding to LASV. The combination of the information retrieved by the techniques allowed to quantify lability degrees of the pool of Zn complexes and to build up the effective concentration signature for this water.
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Affiliation(s)
- Kevin Rosales-Segovia
- Departament de Química. Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Catalonia, Spain
| | - Jordi Sans-Duñó
- Departament de Química. Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Catalonia, Spain
| | - Encarna Companys
- Departament de Química. Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Catalonia, Spain
| | - Jaume Puy
- Departament de Química. Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Catalonia, Spain
| | - Berta Alcalde
- Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Enriqueta Anticó
- Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Clàudia Fontàs
- Departament de Química, Universitat de Girona, Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain
| | - Josep Galceran
- Departament de Química. Universitat de Lleida, and AGROTECNIO-CERCA, Rovira Roure 191, 25198 Lleida, Catalonia, Spain.
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Martin A, Montavon G, Landesman C. A combined DGT - DET approach for an in situ investigation of uranium resupply from large soil profiles in a wetland impacted by former mining activities. Chemosphere 2021; 279:130526. [PMID: 33862359 DOI: 10.1016/j.chemosphere.2021.130526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 04/01/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
An in situ methodology combining DET and DGT probes was applied in a wetland soil, downstream of a former uranium mine (Rophin), to evaluate metal resupply by calculating the R ratio (R = [U]DGT/[U]pore water) from a high resolution and large (75 cm) soil profile. Our study confirms its applicability in soil layers with varying properties; only soil layers with low water content or coarse texture appear to be limiting factors. For soil profiles, DET provides new insights of the distribution of Uranium as soluble species (free ions, small inorganic complexes, …) along the pore water profile, whereas DGT highlights the presence of other "DGT labile" species. The pairing of DET and DGT, plus the calculation of the R, highlights two U behaviors in combining results from red-ox sensitive elements (Mn, Fe). First, in the organic topsoil layer, an increase in [U]DET and [U]DGT at 3-4 cm reflects the desorption of U probably trapped onto Fe- and Mn-oxohydroxides in a DGT-labile form. However, the resupply from soil to pore water is close to a diffusion only case (R < 0.2) meaning that a portion of U is certainly tightly bound by OM in soil as non-labile species. Second, a peak in [U]DGT perfectly corresponding to the former mine deposit layer signifies the presence of U under DGT-labile species. Moreover, a maximum R value of 0.87 demonstrates the near complete resupply of U from a labile fraction in this layer, as opposed to other elements like Pb.
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Affiliation(s)
- A Martin
- SUBATECH, UMR 6457 (IMT-Atlantique, Université de Nantes, CNRS-IN2P3), 4 Rue Alfred Kastler, 44307, Nantes, France
| | - G Montavon
- SUBATECH, UMR 6457 (IMT-Atlantique, Université de Nantes, CNRS-IN2P3), 4 Rue Alfred Kastler, 44307, Nantes, France; LTSER "Zone Atelier Territoires Uranifères", 63000, Clermont-Ferrand, France
| | - C Landesman
- SUBATECH, UMR 6457 (IMT-Atlantique, Université de Nantes, CNRS-IN2P3), 4 Rue Alfred Kastler, 44307, Nantes, France.
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Macoustra GK, Jolley DF, Stauber JL, Koppel DJ, Holland A. Speciation of nickel and its toxicity to Chlorella sp. in the presence of three distinct dissolved organic matter (DOM). Chemosphere 2021; 273:128454. [PMID: 33077193 DOI: 10.1016/j.chemosphere.2020.128454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
Nickel is often a metal of interest in regulatory settings given its increasing prevalence in disturbed freshwaters and as a known toxicant to fish and algae. Dissolved organic matter (DOM) is a toxicity modifying factor for nickel and a ubiquitous water physicochemical parameter. This study investigated the effect of DOM concentration and source on the chronic toxicity of nickel to Chlorella sp. using three DOM at two concentrations (3.1 ± 1.8 and 12 ± 1.3 mg C/L). Nickel toxicity to Chlorella sp. was not strongly influenced by DOM concentration. In the absence of DOM, the 72-h EC50 for Chlorella sp. was 120 μg Ni/L. In the low DOM treatment, nickel toxicity was either unchanged or slightly increased (87-140 μg Ni/L) and unchanged or slightly decreased in the high DOM treatment (130-240 μg Ni/L). DOM source also had little effect on nickel toxicity, the largest differences in nickel toxicity occurring in the high DOM treatment. Labile nickel (measured by diffusive gradients in thin-films, DGT) followed strong linear relationships with dissolved nickel (R2 > 0.97). DOM concentration and source had limited effect on DGT-labile nickel. DGT-labile nickel decreased with increasing DOM concentration for only one of the three DOM. Modelled labile nickel concentrations (expressed as maximum dynamic concentrations, cdynmax) largely agreed with DGT-labile nickel and suggested that toxicity is explained by free Ni2+ concentrations. This study confirms that nickel toxicity is largely unaffected by DOM concentration or source and that both measured (DGT) and modelled (cdynmax and free Ni2+) nickel concentrations can explain nickel toxicity.
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Affiliation(s)
- Gabriella K Macoustra
- School of Earth, Atmosphere and Life Sciences, Faculty of Science, Medicine and Health, University of Wollongong, NSW, 2522, Australia
| | - Dianne F Jolley
- School of Earth, Atmosphere and Life Sciences, Faculty of Science, Medicine and Health, University of Wollongong, NSW, 2522, Australia; CSIRO Land and Water, Lucas Heights, NSW, 2232, Australia
| | | | - Darren J Koppel
- CSIRO Land and Water, Lucas Heights, NSW, 2232, Australia; Faculty of Science, University of Technology Sydney, NSW, 2007, Australia
| | - Aleicia Holland
- CSIRO Land and Water, Lucas Heights, NSW, 2232, Australia; La Trobe University, School of Life Science, Department of Ecology, Environment and Evolution, Centre for Freshwater Ecosystems, Albury/Wodonga Campus, VIC, 3690, Australia.
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Duval JF, van Leeuwen HP, Norde W, Town RM. Chemodynamic features of nanoparticles: Application to understanding the dynamic life cycle of SARS-CoV-2 in aerosols and aqueous biointerfacial zones. Adv Colloid Interface Sci 2021; 290:102400. [PMID: 33713994 PMCID: PMC7931671 DOI: 10.1016/j.cis.2021.102400] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 12/23/2022]
Abstract
We review concepts involved in describing the chemodynamic features of nanoparticles and apply the framework to gain physicochemical insights into interactions between SARS-CoV-2 virions and airborne particulate matter (PM). Our analysis is highly pertinent given that the World Health Organisation acknowledges that SARS-CoV-2 may be transmitted by respiratory droplets, and the US Center for Disease Control and Prevention recognises that airborne transmission of SARS-CoV-2 can occur. In our theoretical treatment, the virion is assimilated to a core-shell nanoparticle, and contributions of various interaction energies to the virion-PM association (electrostatic, hydrophobic, London-van der Waals, etc.) are generically included. We review the limited available literature on the physicochemical features of the SARS-CoV-2 virion and identify knowledge gaps. Despite the lack of quantitative data, our conceptual framework qualitatively predicts that virion-PM entities are largely able to maintain equilibrium on the timescale of their diffusion towards the host cell surface. Comparison of the relevant mass transport coefficients reveals that virion biointernalization demand by alveolar host cells may be greater than the diffusive supply. Under such conditions both the free and PM-sorbed virions may contribute to the transmitted dose. This result points to the potential for PM to serve as a shuttle for delivery of virions to host cell targets. Thus, our critical review reveals that the chemodynamics of virion-PM interactions may play a crucial role in the transmission of COVID-19, and provides a sound basis for explaining reported correlations between episodes of air pollution and outbreaks of COVID-19.
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Dong Q, Liu Y, Liu G, Guo Y, Yang Q, Shi J, Hu L, Liang Y, Yin Y, Cai Y, Jiang G. Enriched isotope tracing to reveal the fractionation and lability of legacy and newly introduced cadmium under different amendments. J Hazard Mater 2021; 403:123975. [PMID: 33265016 DOI: 10.1016/j.jhazmat.2020.123975] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/03/2020] [Accepted: 09/11/2020] [Indexed: 06/12/2023]
Abstract
The newly introduced Cd (CdN) has different environmental fates than legacy Cd (CdL) and how to distinguish them in soil under different amendments is crucial for understanding natural aging and engineered remediation of Cd pollution in soil. In this study, enriched stable isotope tracer (112Cd) was introduced to distinguish the fate of CdN and CdL in paddy soil under pH adjustment and quicklime, slaked lime, and biochar amendments. The behaviors of CdN and CdL were studied during 56 days of flooding incubation through overlying water analysis, sequential extraction fractionation and lability (exchangeable pool probed by 110Cd isotopic spike) assessment. The results showed that soil pH is the main driving factor controlling the partition of both CdN and CdL in overlying water. During the incubation, CdN transformed quickly from soluble fraction to residual fraction under all treatments. In addition, at the end of the incubation, CdN concentrations in residual fraction were much higher than that of CdL, suggesting a more thorough aging of CdN than CdL. The labile CdN (ECdN) under pH adjustment and biochar amendment decreased during incubation and ECdN% was essentially the same with that of ECdL% after 28 days, indicating the aging equilibrium of exchangeable pool of CdN.
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Affiliation(s)
- Qiang Dong
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanwei Liu
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Guangliang Liu
- Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States of America
| | - Yingying Guo
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qingqing Yang
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Jianbo Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ligang Hu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yong Liang
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Yongguang Yin
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China.
| | - Yong Cai
- Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Chemistry and Biochemistry, Florida International University, Miami, Florida 33199, United States of America
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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da Silva Oliveira CA, Kasper D, Sargentini Junior É, Bolson MA, Torrezani L, Zara LF. Influence of environmental conditions on the mercury levels of the sediment along the Balbina Reservoir, Brazilian Amazon. Environ Monit Assess 2021; 193:50. [PMID: 33420665 DOI: 10.1007/s10661-020-08837-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/28/2020] [Indexed: 06/12/2023]
Abstract
Mercury dynamics in hydroelectric reservoirs have been studied worldwide. In tropical reservoirs, especially in those of the Amazon, the influence of geochemistry on Hg levels along this aquatic system is not well understood. The main objective of the present study was to assess the influence of environmental conditions (physical and chemical water parameters, trace element concentrations of sediment and sediment geochemistry) on mercury levels of sediment along the Balbina Reservoir (Amazon basin, Brazil). Sediment was collected along the reservoir and in the main tributaries in May 2015 (n = 10). These samples were assessed for labile iron (LFe), manganese (LMn), aluminum (LAl) and mercury (LHg) concentrations, total mercury (THg) concentrations, organic matter (OM) content, and granulometry. Concentrations in the sediment were 4-212 (LFe), 2-460 (LAl), 180-613 (LMn), < detection limit-256 (LHg), and 12-307 μg kg-1 dry weight (THg). In general, these concentrations decreased along the reservoir from upstream to downstream, reaching the lowest concentrations in the middle of the lake, and they increased in the sampling points near the dam. The lability and concentrations of mercury were influenced by the concentrations of LFe, LMn, LAl, and the granulometry and OM content of the sediment. Altogether, THg concentrations of sediments of the Balbina Reservoir encompass the range of concentrations of other reservoirs or natural lakes in the Amazon basin (from ten to a few hundred μg kg-1 dry weight).
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Affiliation(s)
| | - Daniele Kasper
- Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-900, Brazil
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11
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Marafon G, Barbosa RS, de Jesus Lacerda JJ, Martins V, E Silva JDDF, Costa OS. C and P pool restoration by a no-tillage system on Brazilian Cerrado Oxisol in Piauí State. Environ Monit Assess 2020; 192:254. [PMID: 32222881 DOI: 10.1007/s10661-020-8221-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 03/17/2020] [Indexed: 06/10/2023]
Abstract
The Cerrado soil is under constant modification, especially because of the use of agricultural systems, which affect soil carbon (C) and phosphorus (P) functioning. Thus, the objective of this study was to determine the C and P dynamics in Brazilian Cerrado Oxisol in Piauí State under natural and anthropic conditions, considering that conservational agricultural management and no-tillage systems can restore the C and P pools in that soil. Four soil samples with distinct characteristics (native Cerrado, NC; burned native Cerrado, BNC; conventional tillage agricultural system, CTS; and no-tillage agricultural system, NTS) were collected in the study area for chemical and physical laboratory analysis. The total organic carbon (TOC) concentrations found were 33 g kg-1, 27 g kg-1, 26 g kg-1, and 20 g kg-1 for CTS, NTS, NC, and BNC, respectively. The NTS had a total nitrogen (TN) concentration of 2.0 g kg-1. The CTS had 33.4 g kg-1 of soil-oxidizable C, followed by the NTS with 27.2 g kg-1. In both studied layers, the NTS had an organic P concentration > 200 mg kg-1. The higher TOC concentration in the CTS was because of the higher content of clay in comparison with that in the NTS. The organic P in the NTS was associated with a less labile fraction of C. Thus, despite the disturbance caused by agricultural systems, the adoption of the NTS could be an influential strategy in agricultural systems to restore soil organic functioning in the Brazilian Cerrado Oxisol in Piauí State.
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Affiliation(s)
- Géssica Marafon
- Agronomy Department, Federal University of Piaui (UFPI), Planalto Horizonte, Bom Jesus, PI, 64900-000, Brazil
| | - Ronny Sobreira Barbosa
- Agronomy Department, Federal University of Piaui (UFPI), Planalto Horizonte, Bom Jesus, PI, 64900-000, Brazil.
| | | | - Vanessa Martins
- Technical College of Bom Jesus, Federal University of Piauí (UFPI), Planalto Horizonte, Bom Jesus, PI, 64900-000, Brazil
| | | | - Ozeas S Costa
- School of Earth Sciences, The Ohio State University at Mansfield, 1760 University Dr, Mansfield, OH, 44906, USA
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12
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Marceau K, Nair N, Rogers ML, Jackson KM. Lability in Parent- and Child-Based Sources of Parental Monitoring Is Differentially Associated with Adolescent Substance Use. Prev Sci 2020; 21:568-579. [PMID: 31965425 DOI: 10.1007/s11121-020-01094-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Parental knowledge about adolescents' whereabouts and activities remains one of the strongest predictors of reduced adolescent substance use. A recent study found that across middle childhood and adolescence, parental knowledge is characterized by fluctuations on a year-to-year basis, termed lability, even more-so than by linear trends, and that lability too is a predictor of adolescent substance use (Lippold et al., Dev. Psychol. 17, 274-283, 2016). The present study replicates Lippold et al. (Dev. Psychol. 17, 274-283, 2016) by quantifying developmental change and lability in parental knowledge across adolescence and examining associations with drinking, smoking, and other drug use later in adolescence, and extends the study by examining the sources of knowledge: child disclosure, parental solicitation, and parental control, separately. Using a community-based sample of 1023 youth in the Northeastern region of the USA, all three sources of knowledge were characterized by developmental change and lability. In general, higher levels and steeper developmental declines in knowledge were associated with substance use outcomes. Findings for child disclosure replicated the prior findings: increased lability of child disclosure predicted substance use. Unexpectedly, decreased lability of parental solicitation and control was associated with worse substance use outcomes. Findings suggest different mechanisms by which lability in child- and parent-driven cultivation of knowledge is associated with substance use. If replicated in studies that address causality, these mechanisms could be leveraged for prevention/intervention efforts. For example, increasing the consistency of child disclosure may help prevent substance use, but teaching parents to be more responsive to time-specific challenges with adolescents may be more effective than increasing the consistency of parents' knowledge-building parenting behaviors.
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Affiliation(s)
- Kristine Marceau
- Purdue University, 1202 West State St., West Lafayette, IN, 47907, USA.
| | - Nayantara Nair
- Purdue University, 1202 West State St., West Lafayette, IN, 47907, USA
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13
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de Faria CC, Favero M, Caetano MMM, Rosa AH, Tonello PS. Application of chitosan film as a binding phase in the diffusive gradients in thin films technique (DGT) for measurement of metal ions in aqueous solution. Anal Bioanal Chem 2020; 412:703-714. [PMID: 31828374 DOI: 10.1007/s00216-019-02281-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/18/2019] [Accepted: 11/12/2019] [Indexed: 11/26/2022]
Abstract
Diffusive gradients in thin films technique (DGT) allows in situ determination of labile metal in water, soils, and sediments. This paper aims to evaluate the performance of a new proposal of DGT to measure Cu2+ and Cd2+ in aqueous solution using chitosan films as binding agent. These films were prepared and characterized (Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscope, and elemental analysis). The maximum adsorption rates onto chitosan films at initial concentrations of 0.5 and 1.0 mg L-1 for Cu2+ and Cd2+ were 97%, 98% and 60%, 62%, respectively. Effects of main DGT parameters were evaluated and the results obtained suggest that the pH between 4.0 and 6.0 and ionic strength from 0.0008 to 0.1 mol L-1 presented the best ranges for the application of DGT-Chitosan. The results suggest that chitosan films prepared in this work can be an effective binding agent for DGT technique in aqueous solution. Graphical abstract.
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Affiliation(s)
- Carol C de Faria
- Instituto de Ciência e Tecnologia, Universidade Estadual Paulista (UNESP), Avenida Três de Março 511, Sorocaba, São Paulo, 18087-180, Brazil
| | - Mariana Favero
- Laboratório Multidisciplinar de Mineralogia, Águas e Solos, Universidade Federal de São Paulo (UNIFESP), Rua São Nicolau 210, Diadema, Sao Paulo, 09913-030, Brazil
| | - Marina M M Caetano
- Instituto de Ciência e Tecnologia, Universidade Estadual Paulista (UNESP), Avenida Três de Março 511, Sorocaba, São Paulo, 18087-180, Brazil
| | - Andre H Rosa
- Instituto de Ciência e Tecnologia, Universidade Estadual Paulista (UNESP), Avenida Três de Março 511, Sorocaba, São Paulo, 18087-180, Brazil
| | - Paulo S Tonello
- Instituto de Ciência e Tecnologia, Universidade Estadual Paulista (UNESP), Avenida Três de Março 511, Sorocaba, São Paulo, 18087-180, Brazil.
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14
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Gaulier C, Zhou C, Guo W, Bratkic A, Superville PJ, Billon G, Baeyens W, Gao Y. Trace metal speciation in North Sea coastal waters. Sci Total Environ 2019; 692:701-712. [PMID: 31539978 DOI: 10.1016/j.scitotenv.2019.07.314] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/18/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
Most trace metals exhibit a dual role in marine waters, acting as nutrients at low concentration and being toxic at high concentration. But besides concentration range, speciation is also an important factor. They both show both seasonal and spatial variations. A thorough comparison between total dissolved and particulate concentrations estimated from manual sampling and an assessment of the bioavailability using Diffusive Gradients in Thin Films (DGT) has been performed in this work for Cd, Co, Cu, Ni and Pb, at several sampling points of the Belgian Coastal Zone (BCZ). Additional information to trace back the origin and identify the anthropogenic fingerprint of Suspended Particulate Matter (SPM) was measured using stable carbon isotope measurements in particulate organic matter. Our results show that: (i) particulate and total dissolved metal concentrations are higher at two stations, one in the harbor of Oostende and one offshore; (ii) dissolved and particulate trace metal concentrations do not correlate with the dissolved labile fractions; and (iii) SPM in the harbor zone is likely from allochthonous sources, while in the offshore station marine origin has been evidenced. Our results indicate that, even though contamination is higher in the harbor zones, the trace metal toxicity, which is linked to the metal bioavailability, is most likely not higher than in the open sea. However, with increasing acidification of the ocean, a shift from particulate to dissolved phase might lead to increasing adverse effects on the coastal environment.
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Affiliation(s)
- Camille Gaulier
- Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium; LASIR CNRS UMR 8516, Université de Lille, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France
| | - Chunyang Zhou
- Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Wei Guo
- Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Arne Bratkic
- Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Pierre-Jean Superville
- LASIR CNRS UMR 8516, Université de Lille, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France
| | - Gabriel Billon
- LASIR CNRS UMR 8516, Université de Lille, Cité Scientifique, 59655 Villeneuve d'Ascq Cedex, France
| | - Willy Baeyens
- Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium
| | - Yue Gao
- Analytical, Environmental and Geo-Chemistry Department (AMGC), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
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15
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Murphy AE, Kolkmeyer R, Song B, Anderson IC, Bowen J. Bioreactivity and Microbiome of Biodeposits from Filter-Feeding Bivalves. Microb Ecol 2019; 77:343-357. [PMID: 30612185 DOI: 10.1007/s00248-018-01312-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 12/20/2018] [Indexed: 06/09/2023]
Abstract
Bivalves serve an important ecosystem function in delivering organic matter from pelagic to benthic zones and are important in mediating eutrophication. However, the fate of this organic matter (i.e., biodeposits) is an important consideration when assessing the ecological roles of these organisms in coastal ecosystems. In addition to environmental conditions, the processing of biodeposits is dependent on its composition and the metabolic capacity of the associated microbial community. The objectives of this study were to compare the biological reactivity, potential denitrification rates, and microbial communities of biodeposits sourced from different bivalve species: hard clam (Mercenaria mercenaria), eastern oyster (Crassostrea virginica), and ribbed mussel (Geukensia demissa). To our knowledge, this is the first study to investigate and compare the microbiome of bivalve biodeposits using high-throughput sequencing and provide important insight into the mechanisms by which bivalves may alter sediment microbial communities and benthic biogeochemical cycles. We show that clam biodeposits had significantly higher bioreactivity compared to mussel and oyster biodeposits, as reflected in higher dissolved inorganic carbon and ammonium production rates in controlled incubations. Potential denitrification rates were also significantly higher for clam biodeposits compared to oyster and mussel biodeposits. The microbial communities associated with the biodeposits were significantly different across bivalve species, with significantly greater abundances of Alteromonadales, Chitinophagales, Rhodobacterales, and Thiotrichales associated with the clam biodeposits. These bioreactivity and microbial differences across bivalve species are likely due to differences in bivalve physiology and feeding behavior and should be considered when evaluating the effects of bivalves on water quality and ecosystem function.
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Affiliation(s)
- Anna E Murphy
- Marine Science Center, Northeastern University, Nahant, MA, 01908, USA.
- College of William & Mary, Virginia Institute of Marine Science, Gloucester Point, VA, 23062, USA.
| | | | - Bongkuen Song
- College of William & Mary, Virginia Institute of Marine Science, Gloucester Point, VA, 23062, USA
| | - Iris C Anderson
- College of William & Mary, Virginia Institute of Marine Science, Gloucester Point, VA, 23062, USA
| | - Jennifer Bowen
- Marine Science Center, Northeastern University, Nahant, MA, 01908, USA
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16
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Colby T, Bonfiglio JJ, Matic I. Nonlocalized Searching of HCD Data for Fast and Sensitive Identification of ADP-Ribosylated Peptides. Methods Mol Biol 2018; 1813:255-69. [PMID: 30097874 DOI: 10.1007/978-1-4939-8588-3_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
ADP-ribosylation is a technically challenging PTM which has just emerged into the field of PTM-specific proteomics. But this fragile modifier requires special treatment on both a data acquisition and data processing level: it is highly labile under higher-energy collisional dissociation (HCD), and the degree of lability can depend on the site it modifies. Its behavior thus violates some assumptions on which proteomics algorithms are based. Here we present nonlocalized ADPr searching: a simple principle for maximizing sensitivity toward ADP-ribosylation when searching conventional HCD data. By scoring the strong fragment ions generally observed in ADPr spectra rather than the weak and often absent localization-dependent ions, nonlocalized searches are more sensitive. They also run significantly faster, due to reduced search space, and require no assumptions about which amino acids can be modified. We illustrate implementation in three search systems: Morpheus, MaxQuant, and MASCOT, and we also present a means of rapidly finding and extracting ADP-ribosylated peptide spectra from large datasets for more focused searching. This approach both improves identification of ADP-ribosylated peptides and avoids mis-localization of the modification sites.
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17
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Nath AJ, Brahma B, Sileshi GW, Das AK. Impact of land use changes on the storage of soil organic carbon in active and recalcitrant pools in a humid tropical region of India. Sci Total Environ 2018; 624:908-917. [PMID: 29275253 DOI: 10.1016/j.scitotenv.2017.12.199] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 12/17/2017] [Accepted: 12/18/2017] [Indexed: 06/07/2023]
Abstract
Quantifying soil organic carbon (SOC) dynamics is important in understanding changes in soil properties and carbon (C) fluxes. However, SOC measures all C fractions and it is not adequate to distinguish between the active C (AC) and recalcitrant or passive C (PC) fractions. It has been suggested that PC pools are the main drivers of long term soil C sink management. Therefore, the present study was undertaken with the objective of determining whether or not SOC fractions vary with land use changes under a humid tropical climate in the North East India. A chronosequence study was established consisting of natural forest, Imperata cylindrica grassland and 6, 15, 27 and 34yr old rubber (Hevea brasiliensis) plantations to determine changes in the different fractions of SOC and total SOC stock. SOC stocks significantly varied with soil depth in each land use practice. SOC stocks increased from 106Mgha-1 under 6yr to 130Mgha-1 under 34yr old rubber plantations. The SOC stocks under 34yr old plantations were 20% higher than that under I. cylindrica grassland, but 34% lower than SOC stocks recorded under natural forest soil. The proportion of AC pools decreased with increase in plantation age, AC pools being 59% of SOC stock in 6yr old stands and 33% of SOC stocks in 34yr old plantations. In contrast, the proportion of PC pools increased from 41% of SOC stock in 6yr old plantation to 67% of SOC in 34yr old plantation. In the 50-100cm soil depth, the PC pool under 27-34yr old plantations was comparable with that under natural forest but much higher than in I. cylindrica grassland. Therefore, it is concluded that old rubber plantations can play a significant role in long term soil C sink management.
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Affiliation(s)
- Arun Jyoti Nath
- Department of Ecology and Environmental Science, Assam University, Silchar 788011, India.
| | - Biplab Brahma
- Department of Ecology and Environmental Science, Assam University, Silchar 788011, India
| | - Gudeta W Sileshi
- Plot 1244 Ibex Hill, Lusaka, Zambia; School of Agricultural, Earth and Environmental Sciences, University of Kwazulu-Natal, Pietermaritzburg, South Africa
| | - Ashesh Kumar Das
- Department of Ecology and Environmental Science, Assam University, Silchar 788011, India
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Welikala D, Hucker C, Hartland A, Robinson BH, Lehto NJ. Trace metal mobilization by organic soil amendments: insights gained from analyses of solid and solution phase complexation of cadmium, nickel and zinc. Chemosphere 2018; 199:684-693. [PMID: 29475159 DOI: 10.1016/j.chemosphere.2018.02.069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/07/2018] [Accepted: 02/09/2018] [Indexed: 06/08/2023]
Abstract
The accumulation of Cd in soils worldwide has increased the demand for methods to reduce the metal's plant bioavailability. Organic matter rich soil amendments have been shown to be effective in achieving this. However, it is not known how long these amendments can retain the Cd, and whether dissolved organic matter (DOM) released from them can enhance the metal's mobility in the environment. In this study we sought to test the Cd binding capacity of various organic soil amendments, and evaluate differences in characteristics of the DOM released to see if they can explain the lability of the Cd-DOM complexes. We collected ten organic soil amendments from around New Zealand: five different composts, biosolids from two sources, two types of peat and spent coffee grounds. We characterised the amendments' elemental composition and their ability to bind the Cd. We then selected two composts and two peats for further tests, where we measured the sorption of Ni or Zn by the amendments. We analysed the quality of the extracted DOM from the four amendments using 3D Excitation Emission Matrix analysis, and tested the lability of the metal-DOM complexes using an adapted diffusive gradients in thin-films (DGT) method. We found that composts bound the most Cd and that the emergent Cd-DOM complexes were less labile than those from the peats. Ni-DOM complexes were the least labile. The aromaticity of the extracted DOM appears to be an important factor in determining the lability of Ni complexes, but less so for Zn and Cd.
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Affiliation(s)
- Dharshika Welikala
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, 7647, Christchurch, New Zealand
| | - Cameron Hucker
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, 7647, Christchurch, New Zealand
| | - Adam Hartland
- Environmental Research Institute, School of Science, University of Waikato, Private Bag 3105, Hamilton, 3240, New Zealand
| | - Brett H Robinson
- School of Physical and Chemical Sciences, University of Canterbury, New Zealand
| | - Niklas J Lehto
- Department of Soil and Physical Sciences, Lincoln University, Lincoln, 7647, Christchurch, New Zealand.
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Schneider A, Lin Z, Sterckeman T, Nguyen C. Comparison between numeric and approximate analytic solutions for the prediction of soil metal uptake by roots. Example of cadmium. Sci Total Environ 2018; 619-620:1194-1205. [PMID: 29734598 DOI: 10.1016/j.scitotenv.2017.11.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 11/06/2017] [Accepted: 11/07/2017] [Indexed: 06/08/2023]
Abstract
The dissociation of metal complexes in the soil solution can increase the availability of metals for root uptake. When it is accounted for in models of bioavailability of soil metals, the number of partial differential equations (PDEs) increases and the computation time to numerically solve these equations may be problematic when a large number of simulations are required, for example for sensitivity analyses or when considering root architecture. This work presents analytical solutions for the set of PDEs describing the bioavailability of soil metals including the kinetics of complexation for three scenarios where the metal complex in solution was fully inert, fully labile, or partially labile. The analytical solutions are only valid i) at steady-state when the PDEs become ordinary differential equations, the transient phase being not covered, ii) when diffusion is the major mechanism of transport and therefore, when convection is negligible, iii) when there is no between-root competition. The formulation of the analytical solutions is for cylindrical geometry but the solutions rely on the spread of the depletion profile around the root, which was modelled assuming a planar geometry. The analytical solutions were evaluated by comparison with the corresponding PDEs for cadmium in the case of the French agricultural soils. Provided that convection was much lower than diffusion (Péclet's number<0.02), the cumulative uptakes calculated from the analytic solutions were in very good agreement with those calculated from the PDEs, even in the case of a partially labile complex. The analytic solutions can be used instead of the PDEs to predict root uptake of metals. The analytic solutions were also used to build an indicator of the contribution of a complex to the uptake of the metal by roots, which can be helpful to predict the effect of soluble organic matter on the bioavailability of soil metals.
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Affiliation(s)
- André Schneider
- INRA, UMR 1391 ISPA, 71, avenue Edouard Bourlaux, CS 20032, 33882 Villenave-d'Ornon cedex, France; Bordeaux Sciences Agro, UMR 1391 ISPA, 33170 Gradignan, France.
| | - Zhongbing Lin
- INRA, Laboratoire Sols et Environnement, UMR 1120, 2, avenue de la Forêt de Haye, TSA 40602, 54518 Vandoeuvre-lès-Nancy, France; Université de Lorraine, Laboratoire Sols et Environnement, UMR 1120, 2, avenue de la Forêt de Haye, TSA 40602, 54518 Vandoeuvre-lès-Nancy, France
| | - Thibault Sterckeman
- INRA, Laboratoire Sols et Environnement, UMR 1120, 2, avenue de la Forêt de Haye, TSA 40602, 54518 Vandoeuvre-lès-Nancy, France; Université de Lorraine, Laboratoire Sols et Environnement, UMR 1120, 2, avenue de la Forêt de Haye, TSA 40602, 54518 Vandoeuvre-lès-Nancy, France.
| | - Christophe Nguyen
- INRA, UMR 1391 ISPA, 71, avenue Edouard Bourlaux, CS 20032, 33882 Villenave-d'Ornon cedex, France; Bordeaux Sciences Agro, UMR 1391 ISPA, 33170 Gradignan, France.
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20
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Liu S, Zhu Y, Wu F, Meng W, Wang H, He Z, Guo W, Song F, Giesy JP. Using solid 13C NMR coupled with solution 31P NMR spectroscopy to investigate molecular species and lability of organic carbon and phosphorus from aquatic plants in Tai Lake, China. Environ Sci Pollut Res Int 2017; 24:1880-1889. [PMID: 27796999 DOI: 10.1007/s11356-016-7954-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 10/20/2016] [Indexed: 06/06/2023]
Abstract
Forms and labilities of plant-derived organic matters (OMs) including carbon (C) and phosphorus (P) were fundamental for understanding their release, degradation and environmental behaviour in lake ecosystems. Thus, solid 13C and solution 31P nuclear magnetic resonance (NMR) spectroscopy were used to characterize biomass of six aquatic plants in Tai Lake, China. The results showed that carbohydrates (61.2% of the total C) were predominant C functional group in the solid 13C NMR spectra of plant biomass, which may indicate high lability and bioavailability of aquatic plants-derived organic matter in lakes. There was 72.6-103.7% of the total P in aquatic plant biomass extracted by NaOH-EDTA extracts. Solution 31P NMR analysis of these NaOH-EDTA extracts further identified several molecular species of P including orthophosphate (50.1%), orthophosphate monoesters (46.8%), DNA (1.6%) and pyrophosphate (1.4%). Orthophosphate monoesters included β-glycerophosphate (17.7%), hydrolysis products of RNA (11.7%), α-glycerophosphate (9.2%) and other unknown monoesters (2.1%). Additionally, phytate, the major form of organic P in many lake sediments, was detected in floating plant water poppy. These inorganic P (e.g. orthophosphate and pyrophosphate) and organic P (e.g. diester and its degradation products) identified in plant biomass were all labile and bioavailable P, which would play an important role in recycling of P in lakes. These results increased knowledge of chemical composition and bioavailability of OMs derived from aquatic plants in lakes.
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Affiliation(s)
- Shasha Liu
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Yuanrong Zhu
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Fengchang Wu
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
| | - Wei Meng
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Hao Wang
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Zhongqi He
- USDA-ARS Southern Regional Research Center, 1100 Robert E Lee Blvd, New Orleans, LA, 70124, USA
| | - Wenjing Guo
- College of Water Sciences, Beijing Normal University, Beijing, 100875, China
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Fanhao Song
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - John P Giesy
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
- Department of Biomedical and Veterinary Biosciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Liu S, Zhu Y, Wu F, Meng W, He Z, Giesy JP. Characterization of plant-derived carbon and phosphorus in lakes by sequential fractionation and NMR spectroscopy. Sci Total Environ 2016; 566-567:1398-1409. [PMID: 27282495 DOI: 10.1016/j.scitotenv.2016.05.214] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 05/30/2016] [Accepted: 05/30/2016] [Indexed: 06/06/2023]
Abstract
Although debris from aquatic macrophytes is one of the most important endogenous sources of organic matter (OM) and nutrients in lakes, its biogeochemical cycling and contribution to internal load of nutrients in eutrophic lakes are still poorly understood. In this study, sequential fractionation by H2O, 0.1M NaOH and 1.0M HCl, combined with (13)C and (31)P NMR spectroscopy, was developed and used to characterize organic carbon (C) and phosphorus (P) in six aquatic plants collected from Tai Lake (Ch: Taihu), China. Organic matter, determined by total organic carbon (TOC), was unequally distributed in H2O (21.2%), NaOH (29.9%), HCl (3.5%) and residual (45.3%) fractions. For P in debris of aquatic plants, 53.3% was extracted by H2O, 31.9% by NaOH, and 11% by HCl, with 3.8% in residual fractions. Predominant OM components extracted by H2O and NaOH were carbohydrates, proteins and aliphatic acids. Inorganic P (Pi) was the primary form of P in H2O fractions, whereas organic P (Po) was the primary form of P in NaOH fractions. The subsequent HCl fractions extracted fewer species of C and P. Some non-extractable carbohydrates, aromatics and metal phytate compounds remained in residual fractions. Based on sequential extraction and NMR analysis, it was proposed that those forms of C (54.7% of TOC) and P (96.2% of TP) in H2O, NaOH and HCl fractions are potentially released to overlying water as labile components, while those in residues are stable and likely preserved in sediments of lakes. These results will be helpful in understanding internal loading of nutrients from debris of aquatic macrophytes and their recycling in lakes.
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Affiliation(s)
- Shasha Liu
- College of Water Sciences, Beijing Normal University, Beijing 100875, China; State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yuanrong Zhu
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Fengchang Wu
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Wei Meng
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Zhongqi He
- USDA-ARS Southern Regional Research Center, 1100 Robert E Lee Blvd, New Orleans, LA 70124, USA
| | - John P Giesy
- State Key Laboratory of Environment Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Department of Biomedical and Veterinary Biosciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Marceau K, Ram N, Susman E. Development and Lability in the Parent-Child Relationship During Adolescence: Associations With Pubertal Timing and Tempo. J Res Adolesc 2015; 25:474-489. [PMID: 26321856 PMCID: PMC4550307 DOI: 10.1111/jora.12139] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Adolescents' and parents' reactions to pubertal development are hypothesized to contribute to changes in family dynamics. Using 7-year longitudinal data from the NICHD-SECCYD (488 boys, 475 girls) we examined relations between pubertal development (timing, tempo) and trajectories (developmental change and year-to-year lability) of parent-child conflict and closeness from age 8.5 to 15.5 years. Changes were mostly characterized by year-to-year fluctuations - lability. Parent-child conflict increased and closeness decreased some with age. Pubertal timing and tempo were more consistently associated with lability in parent-child relationships than with long-term trends, although faster tempo was associated with steeper decreases in parent-child closeness. Findings provide a platform for examining how puberty contributes to both long-term and transient changes in adolescents' relationships and adjustment.
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Abstract
In non-meditating samples, distinct facets of mindfulness are found to be negatively correlated, preventing the meaningful creation of a total mindfulness score. The present study used person-centered analyses to distinguish subgroups of college students based on their mindfulness scores, which allows the examination of individuals who are high (or low) on all facets of mindfulness. Using the Lo-Mendell-Rubin Adjusted LRT test, we settled on a 4-class solution that included a high mindfulness group (high on all 5 facets, N = 245), low mindfulness group (moderately low on all 5 facets, N = 563), judgmentally observing group (high on observing, but low on non-judging and acting with awareness, N =63), and non-judgmentally aware group (low on observing, but high on non-judging and acting with awareness, N =70). Consistent across all emotional outcomes including depressive symptoms, anxiety symptoms (i.e., worry), affective instability, and distress intolerance, we found that the judgmentally observing group had the most maladaptive emotional outcomes followed by the low mindfulness group. Both the high mindfulness group and the non-judgmentally aware group had the most adaptive emotional outcomes. We discuss the implications of person-centered analyses to exploring mindfulness as it relates to important psychological health outcomes.
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Affiliation(s)
- Matthew R Pearson
- Center on Alcoholism, Substance Abuse, & Addictions, University of New Mexico
| | - Adrienne K Lawless
- Center on Alcoholism, Substance Abuse, & Addictions, University of New Mexico
| | - David B Brown
- Center on Alcoholism, Substance Abuse, & Addictions, University of New Mexico
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24
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Broome MR, He Z, Iftikhar M, Eyden J, Marwaha S. Neurobiological and behavioural studies of affective instability in clinical populations: a systematic review. Neurosci Biobehav Rev 2015; 51:243-54. [PMID: 25662294 DOI: 10.1016/j.neubiorev.2015.01.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 01/04/2015] [Accepted: 01/26/2015] [Indexed: 01/21/2023]
Abstract
OBJECTIVES To evaluate the neurobiological, psychophysical and behavioural measures of affective instability in clinical populations. DATA SOURCES A range of medical and psychological science electronic databases were searched (including MEDLINE, EMBASE, and PsycINFO). Hand searching and reference checking are also included. REVIEW METHODS Reviews, systematic reviews, experimental and cross-sectional studies, providing affective instability in neurobiological and behavioural measurements in clinical populations. Studies were selected, data were extracted and quality was appraised. RESULTS Twenty-nine studies were included, 6 of which were review studies (one a meta-analysis) and 23 of which were primary studies, across a wide variety of disorders including ADHD, bipolar affective disorder, schizophrenia, severe mood dysregulation, major depression, and borderline personality disorder. CONCLUSIONS The bulk of the studies converge on the role of the amygdala, particularly in borderline personality disorders, and how it connects with other areas of the brain. Future research needs to extend these findings across diagnoses and development.
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Affiliation(s)
- Matthew R Broome
- Department of Psychiatry, University of Oxford, Oxford, UK; Division of Mental Health and Wellbeing, Warwick Medical School, University of Warwick, Coventry, UK; Warneford Hospital, Oxford Health NHS Foundation Trust, Oxford, UK.
| | - Zhimin He
- Department of Psychology, Institute of Psychiatry, King's College of London, London, UK
| | - Mashal Iftikhar
- Oxford University Medical School, University of Oxford, Oxford, UK
| | - Julie Eyden
- Department of Psychology, University of Warwick, Coventry, UK
| | - Steven Marwaha
- Division of Mental Health and Wellbeing, Warwick Medical School, University of Warwick, Coventry, UK; Early Intervention Service, Swanswell Point, Coventry and Warwickshire Partnership Trust, Coventry, UK
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Settimio L, McLaughlin MJ, Kirby JK, Langdon KA, Lombi E, Donner E, Scheckel KG. Fate and lability of silver in soils: effect of ageing. Environ Pollut 2014; 191:151-157. [PMID: 24836503 DOI: 10.1016/j.envpol.2014.04.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 04/15/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
The fate and lability of added soluble Ag in soils over time was examined by measurement of labile metal (E-value) by isotopic dilution using the (110m)Ag radioactive isotope and the solid-phase speciation of Ag by X-ray absorption near edge structure (XANES) spectroscopy. After two weeks of ageing the E-values for Ag decreased by 20-90% with a further decrease of 10-40% after six months. The overall decrease in labile Ag for all soils after the 6 month ageing period was 50-100%. The ageing was more rapid and pronounced in the alkaline soils. XANES results for Ag in soils indicated that for the majority of soils the added Ag(+) was reduced to metallic Ag over time, and associations with Fe-oxohydroxides and reduced S groups in organic matter also decreased Ag lability. Strong positive correlations were found between metallic Ag and non-labile Ag and between organic carbon and Ag bonded with S species.
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Affiliation(s)
- Lara Settimio
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Rd, SA 5064, Australia.
| | - Mike J McLaughlin
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, Waite Rd, SA 5064, Australia; CSIRO Land and Water, Contaminant Chemistry and Ecotoxicology Program, Minerals Down Under Flagship, Waite Campus, Waite Rd, SA 5064, Australia
| | - Jason K Kirby
- CSIRO Land and Water, Contaminant Chemistry and Ecotoxicology Program, Minerals Down Under Flagship, Waite Campus, Waite Rd, SA 5064, Australia
| | - Kate A Langdon
- CSIRO Land and Water, Contaminant Chemistry and Ecotoxicology Program, Minerals Down Under Flagship, Waite Campus, Waite Rd, SA 5064, Australia
| | - Enzo Lombi
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Erica Donner
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Kirk G Scheckel
- National Risk Management Research Laboratory, US EPA, Cincinnati, US
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Wang C, Yuan N, Pei Y. An anaerobic incubation study of metal lability in drinking water treatment residue with implications for practical reuse. J Hazard Mater 2014; 274:342-348. [PMID: 24813662 DOI: 10.1016/j.jhazmat.2014.04.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 04/17/2014] [Accepted: 04/19/2014] [Indexed: 06/03/2023]
Abstract
Drinking water treatment residue (WTR) is an inevitable by-product generated during the treatment of drinking water with coagulating agents. The beneficial reuse of WTR as an amendment for environmental remediation has attracted growing interest. In this work, we investigated the lability of Al, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Sr, V and Zn in Fe/Al hydroxide-comprised WTR based on a 180-day anaerobic incubation test using fractionation, in vitro digestion and a toxicity characteristic leaching procedure. The results indicated that most metals in the WTR were stable during anaerobic incubation and that the WTR before and after incubation could be considered non-hazardous in terms of leachable metal contents according to US EPA Method 1311. However, the lability of certain metals in the WTR after incubation increased substantially, especially Mn, which may be due to the reduction effect. Therefore, although there is no evidence presented to restrict the use of WTR in the field, the lability of metals (especially Mn) in WTR requires further assessment prior to field application. In addition, fractionation (e.g., BCR) is recommended for use to determine the potential lability of metals under various conditions.
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Affiliation(s)
- Changhui Wang
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, 19 Xinjiekouwai Street, Beijing 100875, PR China
| | - Nannan Yuan
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, 19 Xinjiekouwai Street, Beijing 100875, PR China
| | - Yuansheng Pei
- The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, 19 Xinjiekouwai Street, Beijing 100875, PR China.
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Abstract
Agitation, while considered an important factor influencing outcome following traumatic brain injury (TBI), has been a poorly defined construct. As a result, the literature on agitation has been confusing and incomplete in regard to incidence rates, causes and correlates, intervention methods, and long-term outcomes. In this article, we review previous research on incidence rates, concluding that differences in definition have greatly limited current knowledge. We then review how agitation has been operationalized in previous clinical and research efforts, and we recommend a definition that we believe will allow future studies to proceed in a more systematic manner.
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Affiliation(s)
- J Bogner
- Department of Physical Medicine and Rehabilitation, The Ohio State University, Columbus, OH, USA
| | - J D Corrigan
- Department of Physical Medicine and Rehabilitation, The Ohio State University, Columbus, OH, USA
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