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Kang Q, Zhang B, Cao Y, Song X, Ye X, Li X, Wu H, Chen Y, Chen B. Causal prior-embedded physics-informed neural networks and a case study on metformin transport in porous media. WATER RESEARCH 2024; 261:121985. [PMID: 38968734 DOI: 10.1016/j.watres.2024.121985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 05/17/2024] [Accepted: 06/20/2024] [Indexed: 07/07/2024]
Abstract
This study introduces a novel approach to transport modelling by integrating experimentally derived causal priors into neural networks. We illustrate this paradigm using a case study of metformin, a ubiquitous pharmaceutical emerging pollutant, and its transport behaviour in sandy media. Specifically, data from metformin's sandy column transport experiment was used to estimate unobservable parameters through a physics-based model Hydrus-1D, followed by a data augmentation to produce a more comprehensive dataset. A causal graph incorporating key variables was constructed, aiding in identifying impactful variables and estimating their causal dynamics or "causal prior." The causal priors extracted from the augmented dataset included underexplored system parameters such as the type-1 sorption fraction F, first-order reaction rate coefficient α, and transport system scale. Their moderate impact on the transport process has been quantitatively evaluated (normalized causal effect 0.0423, -0.1447 and -0.0351, respectively) with adequate confounders considered for the first time. The prior was later embedded into multilayer neural networks via two methods: causal weight initialization and causal prior regularization. Based on the results from AutoML hyperparameter tuning experiments, using two embedding methods simultaneously emerged as a more advantageous practice since our proposed causal weight initialization technique can enhance model stability, particularly when used in conjunction with causal prior regularization. amongst those experiments utilizing both techniques, the R-squared values peaked at 0.881. This study demonstrates a balanced approach between expert knowledge and data-driven methods, providing enhanced interpretability in black-box models such as neural networks for environmental modelling.
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Affiliation(s)
- Qiao Kang
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Baiyu Zhang
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Yiqi Cao
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Xing Song
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Xudong Ye
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Xixi Li
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Hongjing Wu
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada
| | - Yuanzhu Chen
- School of Computing, Queen's University, Kingston, ON, K7L 2N8, Canada
| | - Bing Chen
- The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X5, Canada.
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Hou J, Wang L, Wang J, Chen L, Han B, Li Y, Yu L, Liu W. A comprehensive evaluation of influencing factors of neonicotinoid insecticides (NEOs) in farmland soils across China: First focus on film mulching. JOURNAL OF HAZARDOUS MATERIALS 2024; 470:134284. [PMID: 38615648 DOI: 10.1016/j.jhazmat.2024.134284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/04/2024] [Accepted: 04/10/2024] [Indexed: 04/16/2024]
Abstract
Neonicotinoid insecticide (NEO) residues in agricultural soils have concerning and adverse effects on agroecosystems. Previous studies on the effects of farmland type on NEOs are limited to comparing greenhouses with open fields. On the other hand, both NEOs and microplastics (MPs) are commonly found in agricultural fields, but their co-occurrence characteristics under realistic fields have not been reported. This study grouped farmlands into three types according to the covering degree of the film, collected 391 soil samples in mainland China, and found significant differences in NEO residues in the soils of the three different farmlands, with greenhouse having the highest NEO residue, followed by farmland with film mulching and farmland without film mulching (both open fields). Furthermore, this study found that MPs were significantly and positively correlated with NEOs. As far as we know this is the first report to disclose the association of film mulching and MPs with NEOs under realistic fields. Moreover, multiple linear regression and random forest models were used to comprehensively evaluate the factors influencing NEOs (including climatic, soil, and agricultural indicators). The results indicated that the random forest model was more reliable, with MPs, farmland type, and total nitrogen having higher relative contributions.
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Affiliation(s)
- Jie Hou
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - LiXi Wang
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - JinZe Wang
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - LiYuan Chen
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China; Co-Innovation Center for Sustainable Forestry in Southern China, College of Ecology and Environment, Nanjing Forestry University, Nanjing 210037, China.
| | - BingJun Han
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - YuJun Li
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Lu Yu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - WenXin Liu
- Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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Cheng H, Xu H, Guo M, Zhu T, Cai W, Miao L, Ji S, Tang G, Liu X. Spatiotemporal dynamics and modeling of thiacloprid in paddy multimedia systems with the effect of wetting-drying cycles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 343:123187. [PMID: 38123113 DOI: 10.1016/j.envpol.2023.123187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/03/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023]
Abstract
The widespread presence of thiacloprid (THI), a neonicotinoid, raises concerns for human health and the aquatic environment due to its persistence, toxicity, and bioaccumulation. The fate of THI in paddy multimedia systems is mainly governed by irrigation practices, but the potential impacts remain poorly documented. This study investigated the effects of water management practices on THI spatiotemporal dynamics in paddy multimedia systems by combining soil column experiments and a non-steady-state multimedia model. The results indicated the wetting-drying cycle (WDC) irrigation reduced THI occurrences in environmental phases (i.e., soil, interstitial water, and overlying water) and accelerated the THI loss through the THI aerobic degradation process. THI occurrences in the soil and water phases decreased from 18.8% for conventional flooding (CF) treatment to 9.2% for severe wetting-drying cycle (SW) treatment after 29 days, while the half-lives shortened from 11.1 days to 7.3 days, respectively. Meanwhile, the WDC decreased THI outflow from leakage water, which reduced the THI risk of leaching. There was no significant difference in THI plant uptake and volatilization between CF and WDC treatments. The mean proportions of THI fate in paddy multimedia systems followed the order: THI degradation (57.7%), outflow from leakage water (25.5%), occurrence in soil (12.4%), plant uptake (3.4%), occurrence in interstitial water (0.7%), occurrence in overlying water (0.3%), volatilization (<0.1%) after 29 days. The sensitivity analysis identified the soil organic carbon partition coefficient (KOC) as the most sensitive parameter affecting THI's fate. In addition, the topsoil layers of 0-4 cm were the main sink of THI, holding 67% of THI occurrence in the soil phase. The THI occurrence in interstitial water was distributed evenly throughout the soil profile. These findings made beneficial theoretical supplements and provided valuable empirical evidence for water management practices to reduce the THI ecological risk.
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Affiliation(s)
- Haomiao Cheng
- School of Environmental Science and Engineering, School of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225127, China.
| | - Hanyang Xu
- School of Environmental Science and Engineering, School of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Min Guo
- Agricultural College, Yangzhou University, 225009, Yangzhou, China
| | - Tengyi Zhu
- School of Environmental Science and Engineering, School of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Wei Cai
- School of Environmental Science and Engineering, School of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Lingzhan Miao
- Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Shu Ji
- School of Environmental Science and Engineering, School of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Guanlong Tang
- School of Environmental Science and Engineering, School of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225127, China; Huaxin Design Group CO., Ltd., Wuxi, 214072, China
| | - Xiang Liu
- College of Agricultural Science and Engineering, Hohai University, Nanjing, 210098, China
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Wei J, Wang X, Tu C, Long T, Bu Y, Wang H, Jeyakumar P, Jiang J, Deng S. Remediation technologies for neonicotinoids in contaminated environments: Current state and future prospects. ENVIRONMENT INTERNATIONAL 2023; 178:108044. [PMID: 37364306 DOI: 10.1016/j.envint.2023.108044] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/05/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023]
Abstract
Neonicotinoids (NEOs) are synthetic insecticides with broad-spectrum insecticidal activity and outstanding efficacy. However, their extensive use and persistence in the environment have resulted in the accumulation and biomagnification of NEOs, posing significant risks to non-target organisms and humans. This review provides a summary of research history, advancements, and highlighted topics in NEOs remediation technologies and mechanisms. Various remediation approaches have been developed, including physiochemical, microbial, and phytoremediation, with microbial and physicochemical remediation being the most extensively studied. Recent advances in physiochemical remediation have led to the development of innovative adsorbents, photocatalysts, and optimized treatment processes. High-efficiency degrading strains with well-characterized metabolic pathways have been successfully isolated and cultured for microbial remediation, while many plant species have shown great potential for phytoremediation. However, significant challenges and gaps remain in this field. Future research should prioritize isolating, domesticating or engineering high efficiency, broad-spectrum microbial strains for NEO degradation, as well as developing synergistic remediation techniques to enhance removal efficiency on multiple NEOs with varying concentrations in different environmental media. Furthermore, a shift from pipe-end treatment to pollution prevention strategies is needed, including the development of green and economically efficient alternatives such as biological insecticides. Integrated remediation technologies and case-specific strategies that can be applied to practical remediation projects need to be developed, along with clarifying NEO degradation mechanisms to improve remediation efficiency. The successful implementation of these strategies will help reduce the negative impact of NEOs on the environment and human health.
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Affiliation(s)
- Jing Wei
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, China; Guangdong Provincial Key Laboratory of Environmental Health and Land Resource, Guangdong Technology and Equipment Research Center for Soil and Water Pollution Control, Zhaoqing University, Zhaoqing 526061, Guangdong, China
| | - Xiaoyu Wang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, China; School of the Environment, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Chen Tu
- CAS Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing 210008, China.
| | - Tao Long
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, China
| | - Yuanqing Bu
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, China
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environment and Chemical Engineering, Foshan University, Foshan 528000, Guangdong, China
| | - Paramsothy Jeyakumar
- Environmental Sciences Group, School of Agriculture and Environment, Massey University, Palmerston North 4442, New Zealand
| | - Jinlin Jiang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, China
| | - Shaopo Deng
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, Jiangsu, China.
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Báez ME, Sarkar B, Peña A, Vidal J, Espinoza J, Fuentes E. Effect of surfactants on the sorption-desorption, degradation, and transport of chlorothalonil and hydroxy-chlorothalonil in agricultural soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 327:121545. [PMID: 37004862 DOI: 10.1016/j.envpol.2023.121545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/30/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
The fungicide chlorothalonil (CTL) and its metabolite hydroxy chlorothalonil (OH-CTL) constitute a risk of soil and water contamination, highlighting the need to find suitable soil remediation methods for these compounds. Surfactants can promote the bioavailability of organic compounds for enhanced microbial degradation, but the performance depends on soil and surfactant properties, sorption-desorption equilibria of contaminants and surfactants, and possible adverse effects of surfactants on microorganisms. This study investigated the influence of five surfactants [e.g., Triton X-100 (TX-100), sodium dodecyl sulphate (SDS), hexadecyltrimethylammonium bromide (HDTMA), Aerosol 22 and Tween 80] on the sorption-desorption, degradation, and mobility of CTL and OH-CTL in two volcanic and one non-volcanic soil. Sorption and desorption of fungicides depended on the sorption of surfactants on soils, surfactants' capacity to neutralize the net negative charge of soils, surfactants' critical micellar concentration, and pH of soils. HDTMA was strongly adsorbed on soils, which shifted the fungicide sorption equilibria by increasing the distribution coefficient (Kd) values. Contrarily, SDS and TX-100 lowered CTL and OH-CTL sorption on soils by decreasing the Kd values, which resulted in an efficient extraction of the fungicide compounds from soil. SDS increased the degradation of CTL, especially in the non-volcanic soil (DT50 values were 14 and 7 days in natural and amended soils, with final residues <7% of the initial dose), whereas TX-100 enabled an early start and sustenance of OH-CTL degradation in all soils. CTL and OH-CTL stimulated soil microbial activities without noticeable deleterious effects of the surfactants. SDS and TX-100 also reduced the vertical transport of OH-CTL in soils. Results of this study could be extended to soils in other regions of the world because the tested soils represent widely different physical, chemical, and biological properties.
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Affiliation(s)
- María E Báez
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile.
| | - Binoy Sarkar
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Aránzazu Peña
- Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Avenida de las Palmeras 4, 18100 Armilla, Granada, Spain
| | - Jorge Vidal
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile
| | - Jeannette Espinoza
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile
| | - Edwar Fuentes
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Olivos 1007, 8380000, Santiago, Chile
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Xu J, Sun J, Lu X, Wang Y, Zhang Y, Sun X. A highly sensitive fluorescence immunochromatography strip for thiacloprid in fruits and vegetables using recombinant antibodies. Talanta 2023; 256:124258. [PMID: 36736270 DOI: 10.1016/j.talanta.2023.124258] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 01/15/2023]
Abstract
Thiacloprid (TCL) is a neonicotinoid insecticide. Its widespread use has led to high levels of residue in fruits and vegetables. Hence, it is important to detect TCL rapidly, accurately, and sensitively in fruits and vegetables. Recombinant antibodies (rAbs) can be synthesized rapidly with little batch-to-batch variation. In this study, recombinant single-chain variable fragment (scFv) antibody and full-length recombinant antibody against TCL were produced using three different expression systems (E. coli, yeast, and mammalian cell). The results of SDS-PAGE and non - competitive enzyme-linked immunosorbent assay (ELISA) indicated that the full-length rAb exhibited promising characteristics, and the IC50 value of indirect competitive ELISA (ic-ELISA) was 2.63 μg L-1. However, recombinant scFv antibody had little affinity for the antigen. To understand antibody recognition, the three-dimensional (3D) model of the variable fragment (Fv) was built via homologous modeling. The interaction between Fv and TCL was analyzed via molecular docking and the results of molecular docking showed that VAL-158, ALA-211, PHE-220, TRP-218, TRP-49, and ILE-100 were mainly responsible for antibody recognition. In addition, a time-resolved fluorescent microsphere-immunochromatographic test strip (TRFM-ICTS) was developed with a linear range and limit of detection of 0.01-10 ng mL-1 and 0.003 ng mL-1 within 15 min under optimal conditions. The IC50 value was 4.268 ng mL-1, and the recovery ranged between 79.4% and 118.6%, which was consistent with HPLC-MS. The TRFM-ICTS has great advantages in sensitivity and applicability.
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Affiliation(s)
- Jia Xu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, China
| | - Jiadi Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, China
| | - Xin Lu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, China
| | - Yunyun Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, China
| | - Yinzhi Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, China
| | - Xiulan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Wuxi, Jiangsu, 214122, China; Yixing Institute of Food and Biotechnology Co., Ltd, Yixing, 214200, China.
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7
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Adsorption and degradation of neonicotinoid insecticides in agricultural soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:47516-47526. [PMID: 36746858 DOI: 10.1007/s11356-023-25671-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 01/28/2023] [Indexed: 02/08/2023]
Abstract
The adsorption and degradation of seven commercially available neonicotinoid insecticides in four types of agricultural soils from three states (Mississippi, Arkansas, and Tennessee) in the USA were studied. The adsorptions of all the neonicotinoids fit a linear isotherm. The adsorption distribution coefficients (Kd) were found to be below 2.0 L/kg for all the neonicotinoids in all the soils from Mississippi and Arkansas. Only in the Tennessee soil samples, the Kd ranged from 0.96 to 4.21 L/kg. These low values indicate a low affinity and high mobility of these insecticides in the soils. The soil organic carbon-water partitioning coefficient Koc ranged from 349 to 2569 L/kg. These Kd values showed strong positive correlations with organic carbon content of the soils. The calculated Gibbs energy change (ΔG) of these insecticides in all the soils ranged from - 14.6 to - 19.5 kJ/mol, indicating that physical process was dominant in the adsorptions. The degradations of all these neonicotinoids in the soils followed a first-order kinetics with half-lives ranging from 33 to 305 days. The order of the insecticides with decreasing degradation rate is as follows: clothianidin > thiamethoxam > imidacloprid > acetamiprid > dinotefuran > thiacloprid > nitenpyram. The moisture content, clay content, and cation exchange capacity showed positive effects on the degradation rate of all the neonicotinoids. The Groundwater Ubiquity Score (GUS) calculated from the adsorption distribution coefficient, organic content, and half-life indicates that, except for thiacloprid, all the neonicotinoids in all the soils are possible leachers, having potentials to permeate into and through groundwater zones.
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Potts J, Jones DL, Macdonald A, Ma Q, Cross P. Acetamiprid fate in a sandy loam with contrasting soil organic matter contents: A comparison of the degradation, sorption and leaching of commercial neonicotinoid formulations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156711. [PMID: 35718179 DOI: 10.1016/j.scitotenv.2022.156711] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 06/15/2023]
Abstract
The impacts of neonicotinoids have generally focussed on the responses of the pure active ingredient. Using a selection of two commercial formulations and the active ingredient, we ran three laboratory studies using 14C-labelled acetamiprid to study the leaching, sorption and mineralisation behaviours of the commercially available neonicotinoid formulations compared to the pure active ingredient. We added 14C-spiked acetamiprid to a sandy loam soil that had received long-term additions of farmyard manure at two rates (10 t/ha/yr and 25 t/ha/yr) and mineral fertilisers, as a control. We found significant differences in acetamiprid mineralisation across both the SOM and chemical treatments. Sorption was primarily impacted by changes in SOM and any differences in leachate recovery were much less significant across both treatment types. The mineralisation of all pesticide formulations was comparatively slow, with <23 % of any given chemical/soil organic matter combination being mineralised over the experimental period. The highest mineralisation rates occurred in samples with the highest soil organic matter levels. The results also showed that 82.9 % ± 1.6 % of the acetamiprid applied was leached from the soil during repeated simulated rainfall events. This combined with the low sorption values, and the low rates of mineralisation, implies that acetamiprid is highly persistent and mobile within sandy soils. As a highly persistent neurotoxin with high invertebrate selectivity, the presence of neonicotinoids in soil presents a high toxicology risk to various beneficial soil organisms, including earthworms, as well as being at high risk of transfer to surrounding watercourses.
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Affiliation(s)
- Jessica Potts
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK.
| | - Davey L Jones
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA 6105, Australia
| | - Andrew Macdonald
- Sustainable Agriculture Sciences Department, Rothamsted Research, Harpenden, Herts AL5 2JQ, UK
| | - Qingxu Ma
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Ministry of Education Key Lab of Environmental Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Paul Cross
- School of Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK
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Chen Y, Wu R, Zhang L, Ling J, Yu W, Shen G, Du W, Zhao M. High spatial resolved cropland coverage and cultivation category determine neonicotinoid distribution in agricultural soil at the provincial scale. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128476. [PMID: 35739663 DOI: 10.1016/j.jhazmat.2022.128476] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 06/15/2023]
Abstract
Croplands are experiencing increasing neonicotinoid pollution and ecological health problems, which are especially widely applied in China. However, the large regional scale distribution of neonicotinoids and the key factors have seldom been determined. We show that the total residual concentration of neonicotinoids ranged from 13.4 to 157 ng/g with an average level of 75.8 ng/g and imidacloprid which was the dominant compound ranged from 10.4 to 81.3 ng/g during 2017-2021 in the Yangtze River Delta, China. In comparison, the neonicotinoid residues detected here were mostly higher than those in other regions. We further show that the 1-km spatial resolution cropland coverage (78.0%) and crop type (18.1%) predominantly contributed to the large spatial variation of neonicotinoids after adjusting for the factors including temperature, soil pH, soil moisture, and precipitation via automatic linear regression modeling at the provincial scale. Additional analyses revealed that tea croplands had significantly lowest concentration and fruit fields had the highest level due to the different application methods. Our findings provide new insight into key factors quantifying the high spatial resolved distribution of neonicotinoids and urgently call for reasonable application methods against rapidly growing ecology threats from neonicotinoid pollution in China.
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Affiliation(s)
- Yuanchen Chen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Research Center of Environmental Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ruxin Wu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Research Center of Environmental Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Li Zhang
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Research Center of Environmental Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jun Ling
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Research Center of Environmental Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Wenfei Yu
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Research Center of Environmental Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Guofeng Shen
- Ministry of Education Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Wei Du
- Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science &Technology, Kunming 650500, China; Key Laboratory of Geographic Information Science (Ministry of Education), School of Geographic Sciences, East China Normal University, Shanghai 200241, China
| | - Meirong Zhao
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Research Center of Environmental Science, Zhejiang University of Technology, Hangzhou 310032, China.
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10
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Liu L, Rao L, Hu J, Zhou W, Li B, Tang L. Effects of different factors on the adsorption–desorption behavior of Glyamifop and its migration characteristics in agricultural soils across China. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Sarkar S, Mukherjee I. Effect of Organic Amendment on Mobility Behavior of Flupyradifurone in Two Different Indian Soils. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 107:160-166. [PMID: 33797558 DOI: 10.1007/s00128-021-03209-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Flupyradifurone is a novel neonicotinoid insecticide, mainly used in okra in subtropical conditions for controlling whitefly and jassids. The present experiment was designed to generate information on the leaching behavior of flupyradifurone, 3-[(6-chloropyridin-3-yl)methyl-(2,2-difluroethyl)amino]-2H-furan-5-one, under different rainfall conditions by using packed soil columns. Under the continuous flow conditions, a significant quantity of flupyradifurone, 67.76% and 50.61% were recovered at 0 to 5 cm soil depth in case of both clayey and sandy loam soil, respectively. A considerable amount of the residue was confined to 0 to 20 cm soil depth, with or without farmyard manure (FYM) amendment. Under varying water flow condition, distribution of the residue in the upper 0 to 5 cm soil depth got enhanced (> 90% recovery). Among the test soils, residues were detected from the leachate fraction of sandy soil (0.08 µg/mL) only. The study pointed out that leaching of flupyradifurone in sandy loam soil got decreased after using FYM. The leaching of flupyradifurone increased with the increasing amount of water (40 to 160 mL) and the residues continued to travel down to the lower depth. It can be concluded that the use of FYM may be a viable option for reducing the mobility of flupyradifurone in sandy loam soil.
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Affiliation(s)
- Subhasis Sarkar
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Irani Mukherjee
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
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12
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Chen K, Liu X, Wu X, Xu J, Dong F, Zheng Y. The degradation dynamics and rapid detection of thiacloprid and its degradation products in water and soil by UHPLC-QTOF-MS. CHEMOSPHERE 2021; 263:127960. [PMID: 33297023 DOI: 10.1016/j.chemosphere.2020.127960] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/08/2020] [Accepted: 08/06/2020] [Indexed: 06/12/2023]
Abstract
Thiacloprid is a neonicotinoid insecticide used to control sucking and chewing insects of fruits and vegetables. Hydrolysis, photolysis of thiacloprid in aqueous solutions, and soil degradation of three typical types of soil in China were studied. UHPLC-QTOF/MS was used to acquire high-resolution mass spectrometry information of thiacloprid's degradation products in water and soil samples, and the UNIFI platform with integrated data processing function was used to find and identify degradation products. The degradation kinetics of thiacloprid was determined. Six transformation products (M271, M287, M269, M295, M279, M267) were found after the data processing workflow in the UNIFI platform by using the raw MSE data. The structure of putative transformation products can be inferred based on the accurate mass of fragment ions and the automated spectral interpretation tools in the UNIFI platform. The structure of M271 was validated to be thiacloprid amide by comparing the ESI-MS2 fragment ions in soil samples and thiacloprid amide standard. The TrendPlot function of UNIFI was used to demonstrate the kinetics of the transformation products. Reduction, hydrolysis, oxidation are the main reactions of thiacloprid in three tested soil in China and buffer solutions. This study provided a reference for the rapid identification of the transformation products of other pesticides in specific environmental conditions.
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Affiliation(s)
- Kaiying Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R, China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R, China.
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R, China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R, China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R, China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, P. R, China.
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13
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Aseperi AK, Busquets R, Hooda PS, Cheung PCW, Barker J. Behaviour of neonicotinoids in contrasting soils. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 276:111329. [PMID: 32932069 DOI: 10.1016/j.jenvman.2020.111329] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 06/11/2023]
Abstract
Neonicotinoids are widely used to control insect pests in agriculture. Their presence in the environment can affect the health of non-target insects and aquatic animals. The behaviour of four neonicotinoids, namely imidacloprid, acetamiprid, thiacloprid and thiamethoxam, has been investigated in soils with contrasting characteristics to understand their migration in soil and ecological risk. Among the study neonicotinoids, thiamethoxam and thiacloprid were found to be the least and most sorbed neonicotinoids by all the soils, respectively (up to 186 time greater adsorption of thiacloprid), and their uptake was affected by the content of organic matter in the soil. Leaching studies in columns confirmed that thiamethoxam leached out of the soils readily, pointing out to a relatively high risk of ground water contamination with possible ecological impact when thiamethoxam is used in soils with low organic matter. In soil column studies, the soil with the lowest organic matter presents the greatest residue of neonicotinoids in the sub-surface (≤5 cm). In contrast the soil richer in organic matter presented most of the contamination deeper down in the column; a factor to be considered in the remediation from soil.
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Affiliation(s)
- Adeniyi K Aseperi
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom.
| | - Rosa Busquets
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom.
| | - Peter S Hooda
- School of Engineering and Environment, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom
| | - Philip C W Cheung
- Department of Chemical Engineering, Imperial College, London, SW7 2AZ, United Kingdom
| | - James Barker
- School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston-upon-Thames, Surrey, KT1 2EE, United Kingdom
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14
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Pietrzak D, Kania J, Kmiecik E, Malina G, Wątor K. Fate of selected neonicotinoid insecticides in soil-water systems: Current state of the art and knowledge gaps. CHEMOSPHERE 2020; 255:126981. [PMID: 32408130 DOI: 10.1016/j.chemosphere.2020.126981] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/30/2020] [Accepted: 05/03/2020] [Indexed: 05/20/2023]
Abstract
The occurrence of emerging contaminants, such as: personal care products, medicines, pharmaceuticals, pesticides, and their transformation products in the environment is of concern for human health and aquatic ecosystems due to their high persistence, toxicity and potential to bioaccumulation. Among pesticides, the main attention and thus our focus is on neonicotinoids: acetamiprid, clothianidin, imidacloprid, thiacloprid and thiamethoxam, which are widely used classes of insecticides in agriculture. Determining the associated risk to humans and ecosystems from neonicotinoid insecticides requires detailed understanding of their fate and transport in the environment which is complex and includes diverse pathways and processes depending on environmental compartments in which they occur. This paper critically reviews the current state of the art about processes, parameters and phenomena influencing the fate of neonicotinoid insecticides in soil-water systems (i.e. soil and groundwater), and reveals existing knowledge gaps. Sorption, biodegradation, chemical transformations of neonicotinoid insecticides in the soil and leaching to the groundwater, as well as groundwater/surface water interactions are highlighted, as they determine their further migration from sources, through soils to groundwater systems and then to other environmental compartments posing ecological and human risks. A number of key knowledge gaps in fate of neonicotinoid insecticides in soil-water systems are identified, that concern mostly processes and pathways occurring in the groundwater, and require further research to assess the associated risk to humans and ecosystems.
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Affiliation(s)
- Damian Pietrzak
- AGH University of Science and Technology, Mickiewicza 30 Av., 30-059, Kraków, Poland
| | - Jarosław Kania
- AGH University of Science and Technology, Mickiewicza 30 Av., 30-059, Kraków, Poland
| | - Ewa Kmiecik
- AGH University of Science and Technology, Mickiewicza 30 Av., 30-059, Kraków, Poland.
| | - Grzegorz Malina
- AGH University of Science and Technology, Mickiewicza 30 Av., 30-059, Kraków, Poland
| | - Katarzyna Wątor
- AGH University of Science and Technology, Mickiewicza 30 Av., 30-059, Kraków, Poland
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15
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Wang XQ, Liu J, Zhang N, Yang H. Adsorption, mobility, biotic and abiotic metabolism and degradation of pesticide exianliumi in three types of farmland. CHEMOSPHERE 2020; 254:126741. [PMID: 32320835 DOI: 10.1016/j.chemosphere.2020.126741] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 04/01/2020] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
Exianliumi is a newly developed pesticide for controlling diseases caused by microbes or meloidogynes during plant vegetable and reproductive stages. To date, little is known about the environmental behavior and fate of its residues in soil. To explore its potential environmental risks to crop production and food safety, three typical Chinese agricultural soils were examined by analyzing adsorption, mobility leaching, and degraded metabolites of exianliumi in soils. Exianliumi inclined to bind more to Heilongjiang soil (HLJS), followed by Nanjing soil (NJS) and Jiangxi soil (JXS). Soil thin-layer chromatography and column leaching tests showed a weak migration in HLJS and strong mobility in JXS. Under the same condition, exianliumi rapidly decayed in NJS, followed by HLJS and JXS. The differential degradative capacity for exianliumi in the soils was related to chemical, physical and biological interactions basically through organic matter content, temperature, soil moisture and microorganisms. The half-normal, normal and pareto effect plots demonstrated that temperature, microorganisms and soil moisture dominantly influenced the degradation of exianliumi. We further characterized metabolites of exianliumi catabolized in NJS using High Resolution Liquid Chromatography-Quadrupole-Time of Flight-Mass Spectrometer/Mass Spectrometer (HRLC-Q-TOF-MS/MS). Eight degradation products and three conjugates of exianliumi were detected and the possible degradative pathways were highlighted. This is the first report about exianliumi degradation in soils with multi-pathways, which provides the basic data for environmental risk assessment of crop production and food security.
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Affiliation(s)
- Xin Qiang Wang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jintong Liu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing, 210095, China
| | - Nan Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hong Yang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China; State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing, 210095, China.
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16
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Peña A, Delgado-Moreno L, Rodríguez-Liébana JA. A review of the impact of wastewater on the fate of pesticides in soils: Effect of some soil and solution properties. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 718:134468. [PMID: 31839299 DOI: 10.1016/j.scitotenv.2019.134468] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/13/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
Reuse of wastewater (WW) as an agricultural irrigation source is being considered with increasing interest, mainly in arid and semiarid zones. However, due to the complex nature of WW its reuse can have an impact on the fate of the pesticides added to the soils and crops for pest control. This review provides a detailed insight about the main processes involved in pesticide-soil-WW interactions (adsorption/desorption, degradation, transport, plant uptake and field assays) focusing on the role of dissolved organic matter and salt content in the mentioned processes. The influence of pesticide and soil properties in these processes is also discussed. The review explores current research gaps in the pesticide-soil-WW interactions and identifies areas that merit further research, providing a perspective for further scientific exploration.
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Affiliation(s)
- Aránzazu Peña
- Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Avda. de las Palmeras 1, 18100-Armilla, Granada, Spain.
| | - Laura Delgado-Moreno
- Estación Experimental del Zaidín, CSIC, c/ Profesor Albareda 1, 18008 Granada, Spain
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17
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Mörtl M, Takács E, Klátyik S, Székács A. Appearance of Thiacloprid in the Guttation Liquid of Coated Maize Seeds. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E3290. [PMID: 32397272 PMCID: PMC7246591 DOI: 10.3390/ijerph17093290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/29/2020] [Accepted: 05/06/2020] [Indexed: 11/17/2022]
Abstract
Thiacloprid (TCL) uptake by maize plants that emerge from coated seeds has been investigated and characterized via measurements of the compound in the guttation liquid. TCL levels were determined in the guttation liquid: (a) under field and semi-field conditions, (b) for different maize varieties, (c) applying different dosages, and (d) as affected by cross-contamination between maize seeds via soil. Cross-contamination was described by uptake interactions between seeds coated with TCL and neighboring seeds not coated or coated with other neonicotinoids, e.g., either thiamethoxam (TMX) or clothianidin (CLO). TCL levels remained under 100 µg/mL in the guttation liquid under field conditions, and were quantifiable even on the 39th day after planting of coated seeds. Higher levels up to 188.6 µg/mL were detected in plants grown under semi-field conditions in pots. Levels in the guttation liquid were also found to be influenced by the applied dosages. The uptake of TCL was found to vary for different maize varieties. Appearance of TCL as a cross-contaminant in the guttation liquid of neighboring plants emerging from non-coated maize seeds indicates translocation of the compound via soil. Peak levels of TCL cross-contamination were found to be lower (43.6 µg/mL) than the corresponding levels in the parent maize plants emerging from coated seeds (107.5 µg/mL), but values converge to each other. Similar trends were observed with neighboring seeds coated with other neonicotinoids (TMX or CLO). The translocation rate of TCL and its uptake by other plants seem to be lower than that of TMX or CLO.
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Affiliation(s)
- Mária Mörtl
- Agro-Environmental Research Institute, National Agricultural Research and Innovation Centre, H−1022 Budapest, Hungary; (E.T.); (S.K.); (A.S.)
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18
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Lei W, Tang X, Zhou X. Quantifying dynamic desorption of 3,5,6-trichloro-2-pyridinol in loamy farmland soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30782-30793. [PMID: 31444723 DOI: 10.1007/s11356-019-06233-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
Reliable estimate of the release of adsorbed pesticide from soil particles is crucial to evaluating the pesticide fate, mobility, efficacy, and remediation. In this study, the dynamics of TCP (3,5,6-trichloro-2-pyridinol) desorption, the main degradation product of chlorpyrifos and triclopyr, is explored quantitatively by the breakthrough curve (BTC) experiment with the tracer of Br- in the loamy farmland purple soil sampled from Sichuan Basin of southwestern China. TCP in the outflow originates from two sources: dissolved TCP in pore water and desorbed TCP from soil particles by infiltrating water. The dissolved TCP is considered proportional to the amount of Br- because both TCP and Br- are dissolved in water uniformly. According to the mass balance equation, the desorbed TCP are estimated and the typical patterns of dynamic TCP desorption are revealed. Characteristics of TCP desorption are compared between packed and undisturbed soil columns as well as between different planting types. The dynamics of the proportion of desorbed TCP during the breakthrough process are characterized. In particular, the high heterogeneity of the undisturbed soil may be responsible for the observed fluctuation of desorbed TCP in the outflow. Additionally, the obtained increase-decrease pattern of the desorbed rate of TCP released from the soil shows that most models proposed to simulate the desorption processes are not appropriate, because these models display a monotone decreasing trend, such as the Noyes-Whitney Rule and other release kinetic models (zero order, first order, Higuchi and Korsmeyer-Peppas model, etc.). After a comparison among linear model, Gamma distribution and Weibull distribution, the CDF of gamma distribution is identified as a better method to describe the proportion of desorbed TCP in outflow. Therefore, this study provides an alternative method to measure the dynamic desorption process of TCP in different environment of the purple soil, and their affecting factors are also identified. These results are useful in quantifying the leaching of the TCP in the field, in support of the prevention of agricultural non-point pollution of pesticides.
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Affiliation(s)
- Wenjuan Lei
- College of Tea Science, Guizhou University, Guiyang, 550025, China
- Institute of Mountain Hazards and Environment, CAS, Chengdu, 610041, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangyu Tang
- Institute of Mountain Hazards and Environment, CAS, Chengdu, 610041, China.
| | - Xiangyang Zhou
- College of Resource and Environment Engineering, Guizhou University, Guiyang, 550025, China
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19
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Marín-Benito JM, Barba V, Ordax JM, Sánchez-Martín MJ, Rodríguez-Cruz MS. Recycling organic residues in soils as amendments: Effect on the mobility of two herbicides under different management practices. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 224:172-181. [PMID: 30041096 DOI: 10.1016/j.jenvman.2018.07.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/11/2018] [Accepted: 07/14/2018] [Indexed: 06/08/2023]
Abstract
The addition of organic residues to soil to increase its organic matter content is considered as a viable option for sustainable food production in soils sensitive to degradation and erosion. However, the recycling of these organic residues in agricultural soils needs to be previously appraised because they can modify the behaviour of pesticides when they are simultaneously applied in agricultural practices. This study evaluated the changes in the mobility and persistence of two herbicides, triasulfuron and prosulfocarb, after two repeated applications in field experimental plots in an unamended soil and one amended with green compost (GC) for seven months. Different factors were studied: i) soil without amendment (S), ii) soil amended with two doses of GC (∼12 t C ha-1, S + GC1 and 40 t C ha-1, S + GC2), and iii) soils unamended and amended with different irrigation conditions: non-irrigated and with additional irrigation (2.8 mm per week). After the first application of herbicides, the results initially indicated no significant effects of soil treatments or irrigation conditions for triasulfuron mobility in agreement with the residual concentrations in the soil profile. The effect of irrigation was noted after one month of herbicide application and the effect of the soil treatment was significant after two months because the persistence of triasulfuron in S + GC2 was maintained until 50% of the applied amount. For prosulfocarb, the influence of soil amendment was significant for the initial persistence of the herbicide in S + GC2, higher than in S or S + GC1, in agreement with its adsorption constants for this soil. However, dissipation or leaching of the herbicide over time was not inhibited in this soil. After the repeated application of herbicides, the influence of the treatment of soils and/or irrigation was significant for the leaching and dissipation of both herbicides. The initial dissipation/degradation or leaching of herbicides was higher than after the first application, although persistence was maintained after five months of application in amended soils for triasulfuron and in unamended and amended soils for prosulfocarb. The results confirm that high doses of GC increased the persistence of both herbicides. This practice may offer the possibility of applying a tailored dose of GC to soil for striking a balance between residual concentrations and the soil agronomic effect.
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Affiliation(s)
- J M Marín-Benito
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain.
| | - V Barba
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain.
| | - J M Ordax
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain.
| | - M J Sánchez-Martín
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain.
| | - M S Rodríguez-Cruz
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain.
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20
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Dollinger J, Schacht VJ, Gaus C, Grant S. Effect of surfactant application practices on the vertical transport potential of hydrophobic pesticides in agrosystems. CHEMOSPHERE 2018; 209:78-87. [PMID: 29913402 DOI: 10.1016/j.chemosphere.2018.06.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/30/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Abstract
Surfactants have the potential to modify the environmental behavior of hydrophobic pesticides leading to an enhanced or reduced mobility risk. This risk is often overlooked in registration procedures due to a lack of suitable methodologies to quantify the transport potential of pesticides with surfactants. In this study we present a novel methodology designed to study the surfactant facilitated transport of pesticides under controlled equilibrium and dynamic hydrologic conditions. Using this methodology, we investigated the risk of chlorpyrifos enhanced mobility for two common surfactant application practices in agrosystems: pesticide spraying and irrigation with waste water. With the dynamic experiments we showed that a single irrigation event with artificial reclaimed water containing the nonionic surfactant Triton X100 at a concentration of 15 mg/L reduced the leaching of chlorpyrifos by 20% while the presence of the same surfactant in the chlopyrifos spraying formulation reduced the leaching amount by 60%. However, in the first case 90% of the chlropyrifos fraction remaining in soil was retained in the upper 3 cm while in the second cas, 72% was transported to the bottom layers. The presence of Triton X100 in irrigation water or spraying formulation retards the leaching of chlorpyrifos but enhances its downward transport.
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Affiliation(s)
- Jeanne Dollinger
- UMR ECOSYS, INRA-AgroParisTech, Campus de Grignon, F-78850 Thiverval-Grignon, France.
| | - Veronika J Schacht
- QAEHS, The University of Queensland, 39 Kessels Road, Coopers Plains QLD 4108, Australia; Recetox, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic
| | - Caroline Gaus
- QAEHS, The University of Queensland, 39 Kessels Road, Coopers Plains QLD 4108, Australia
| | - Sharon Grant
- QAEHS, The University of Queensland, 39 Kessels Road, Coopers Plains QLD 4108, Australia
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21
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Cao B, Jiang Z, Li J, Zhang X, Hu Y, Chen J, Zhang Y. Different dissolved organic matter (DOM) characteristics lead to diverse atrazine adsorption traits on the non-rhizosphere and rhizosphere soil of Pennisetum americanum (L.) K. Schum. CHEMOSPHERE 2018; 209:608-616. [PMID: 29957521 DOI: 10.1016/j.chemosphere.2018.06.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 05/19/2018] [Accepted: 06/10/2018] [Indexed: 06/08/2023]
Abstract
Plant activities might alter the environmental behavior of organic pollutants in rhizosphere soil during phytoremediation. To further illustrate the mechanisms underlying the varying adsorption about the different adsorbing abilities of rhizosphere soil (RS) and non-rhizosphere soil (NRS) for the same pollutant, atrazine was selected to investigate the adsorption traits in the NRS and RS of Pennisetum americanum (L.) K. Schum (P. americanum), a potential phytoremediator of atrazine pollution. Furthermore, the different fluorescence spectral properties of the dissolved organic matter (DOM) extracted from RS and NRS when binding with atrazine were also investigated. RS exhibited a higher atrazine adsorption capacity than NRS, although the kinetic and isothermal properties of atrazine adsorption onto the two kinds soil were described by a pseudo second-order model and the Freundlich model. The DOM extracted from RS showed a stronger atrazine-binding ability than that extracted from NRS, as proven by the much more obvious decrease in fluorescence intensity when binding with atrazine. Although synchronous fluorescence spectra analysis suggested that both DOM types bind atrazine using a static fluorescence quenching mechanism, Fourier transform infrared spectroscopy showed that some distinct functional groups, which might liable to combine with atrazine, were found in only the DOM extracted from RS. Considering the findings mentioned above and the fact that the typical chemical characteristics of RS were different from those of NRS, we concluded that the P. americanum enhances the atrazine adsorption ability of RS by regulating the chemical characteristics and atrazine-binding ability of DOM in RS.
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Affiliation(s)
- Bo Cao
- School of Resources & Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Zhao Jiang
- School of Resources & Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jinmei Li
- School of Resources & Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Xiuyuan Zhang
- School of Resources & Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yang Hu
- School of Resources & Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jianing Chen
- School of Resources & Environment, Northeast Agricultural University, Harbin, 150030, PR China
| | - Ying Zhang
- School of Resources & Environment, Northeast Agricultural University, Harbin, 150030, PR China.
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Rodríguez-Liébana JA, Peña A. Adsorption-desorption of dimethenamid and fenarimol onto three agricultural soils as affected by treated wastewater and fresh sewage sludge-derived dissolved organic carbon. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 217:592-599. [PMID: 29649731 DOI: 10.1016/j.jenvman.2018.03.119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 03/24/2018] [Accepted: 03/26/2018] [Indexed: 06/08/2023]
Abstract
The use of treated wastewaters (TWW) in agriculture is widening in areas suffering drought, such as southern Europe, to preserve freshwater supply for human consumption. The composition of TWW, especially concerning their organic carbon (OC) content, has been demonstrated to influence the processes governing the behavior of non-ionic pesticides in soils. Three OC-poor agricultural soils (SV, RM1 and RM3) from the province of Granada (Spain) were chosen for the assessment of the adsorption and desorption of the herbicide dimethenamid (DIM) and the fungicide fenarimol (FEN). TWW and sewage sludge extracts at different dissolved OC (DOC) concentrations (30, 90 and 300 mg L-1) were considered to evaluate their effect on pesticide adsorption-desorption. As expected by their properties, DIM and FEN were weakly and moderately adsorbed to the soils, respectively. Soil OC seemed to be the major factor controlling FEN adsorption, whereas the mineral fraction played a key role in DIM adsorption, especially in RM1 with high clay:OC ratio. Although TWW did not significantly modify the adsorption of pesticides, it enhanced DIM desorption from the three soils. Adsorption of FEN to SV and RM3 was directly related to the concentration of DOC, possibly due to co-sorption phenomena. Hysteretic desorption was found in all cases, indicating partially reversible adsorption. While FEN desorption was not altered by the solutions, the use of sludge extracts at the highest DOC concentration (300 mg L-1) enhanced DIM desorption as occurred with TWW. Interactions with DOC in solution seemed to predominate for this less hydrophobic compound, thus increasing the risk of natural waters contamination if TWW will be used.
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Affiliation(s)
- José Antonio Rodríguez-Liébana
- Instituto Andaluz de Ciencias de la Tierra (IACT), Consejo Superior de Investigaciones Científicas-Universidad de Granada (CSIC-UGR), Avda. de las Palmeras, 4, 18100-Armilla, Granada, Spain.
| | - Aránzazu Peña
- Instituto Andaluz de Ciencias de la Tierra (IACT), Consejo Superior de Investigaciones Científicas-Universidad de Granada (CSIC-UGR), Avda. de las Palmeras, 4, 18100-Armilla, Granada, Spain.
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Marín-Benito JM, Barba V, Ordax JM, Andrades MS, Sánchez-Martín MJ, Rodríguez-Cruz MS. Application of green compost as amendment in an agricultural soil: Effect on the behaviour of triasulfuron and prosulfocarb under field conditions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 207:180-191. [PMID: 29174993 DOI: 10.1016/j.jenvman.2017.11.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 06/07/2023]
Abstract
Herbicides are essential in agricultural systems for maintaining crop yields, as weeds compromise grain production. Furthermore, the application of organic amendments to soil is an increasingly frequent agricultural practice for avoiding irreversible soil degradation. However, this practice could modify the behaviour of the herbicides applied, with implications for their absorption by weeds. This study evaluated the dissipation, persistence and mobility of the herbicides triasulfuron and prosulfocarb in a sandy clay loam soil unamended and amended with green compost (GC) in a field experiment using single or combined commercial formulations of both herbicides. The study was carried out in experimental plots (eight treatments × three replicates) corresponding to unamended soil and soil amended with GC, untreated and treated with the herbicide formulations Logran®, Auros® and Auros Plus® over 100 days. The half-life (DT50) of triasulfuron applied individually was 19.4 days, and increased in the GC-amended soil (46.7 days) due to its higher adsorption by this soil, although non-significant differences between DT50 values were found when it was applied in combination with prosulfocarb. Prosulfocarb dissipated faster than triasulfuron under all the conditions assayed, but non-significant differences were observed for the different treatments. The analysis of the herbicides at different soil depths (0-50 cm) after their application confirmed the leaching of both herbicides to deeper soil layers under all conditions, although larger amounts of residues were found in the 0-10 and 10-20 cm layers. The application of GC to the soil increased the persistence of both herbicides, and prevented the rapid leaching of triasulfuron in the soil, but the leaching of prosulfocarb was not inhibited. The influence of single or combined formulations was observed for triasulfuron, but not for prosulfocarb. The results obtained highlight the interest of obtaining field data to design rational joint applications of GC and herbicides to prevent the possible decrease in their effectiveness for weeds or the risk of water contamination.
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Affiliation(s)
- J M Marín-Benito
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - V Barba
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - J M Ordax
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - M S Andrades
- Departamento de Agricultura y Alimentación, Universidad de La Rioja, C/ Madre de Dios 51, 26006 Logroño, Spain
| | - M J Sánchez-Martín
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - M S Rodríguez-Cruz
- Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), C/ Cordel de Merinas 40-52, 37008 Salamanca, Spain.
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