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Xu S, Song J, Shen F, Wang Y, Zhang L, Fang H, Yu Y. Uptake, Accumulation, and translocation of azoxystrobin by Vegetable plants in soils: influence of soil characteristics and plant species. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 109:386-392. [PMID: 35670838 DOI: 10.1007/s00128-022-03556-w] [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: 01/07/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Although azoxystrobin has been widely applied on various crops, little is known about the bioavailability of azoxystrobin in the soil-vegetable system. In this study, the uptake, accumulation and translocation of azoxystrobin as affected by soil characteristics and plant species were respectively investigated. The accumulation amount of azoxystrobin in pakchoi increased as soil adsorption decreased and was positively associated with its concentration in pore water (Cpw), which was mainly affected by soil organic matter content. Therefore, Cpw could be a candidate for the estimation of azoxystrobin accumulation in pakchoi. In all the tested vegetables, azoxystrobin was mainly accumulated in roots, and its upward translocation was limited. Root lipid content was a major factor affecting the uptake and translocation of azoxystrobin in different vegetables.
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Affiliation(s)
- Shiji Xu
- Institute of Pesticide and Environmental Toxicology, The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, 310058, Hangzhou, China
| | - Jialu Song
- Institute of Pesticide and Environmental Toxicology, The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, 310058, Hangzhou, China
| | - Fan Shen
- Institute of Pesticide and Environmental Toxicology, The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, 310058, Hangzhou, China
| | - Yingnan Wang
- Institute of Pesticide and Environmental Toxicology, The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, 310058, Hangzhou, China
| | - Luqing Zhang
- Institute of Pesticide and Environmental Toxicology, The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, 310058, Hangzhou, China.
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, 310058, Hangzhou, China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, College of Agricultural and Biotechnology, Zhejiang University, 310058, Hangzhou, China
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Olisah C, Human LRD, Rubidge G, Adams JB. Organophosphate pesticides sequestered in tissues of a seagrass species - Zostera capensis from a polluted watershed. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113657. [PMID: 34509819 DOI: 10.1016/j.jenvman.2021.113657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/22/2021] [Accepted: 08/28/2021] [Indexed: 06/13/2023]
Abstract
Organophosphate pesticides (OPPs) are persistent in the environment, but little information is available on their bioaccumulation in seagrass. In this study, the seagrass - Zostera capensis was collected from Swartkops Estuary in South Africa to investigate the bioaccumulation of OPPs from contaminated sediments and the water column. This plant was chosen because it grows abundantly in the estuary's intertidal zone, making it a viable phytoremediator in the urban environment. Extraction was performed by the QuEChERS method followed by GC-MS analysis. The mean concentration of ∑OPPs ranged from 0.01 to 0.03 μg/L for surface water; 6.20-13.35 μg/kg dw for deep-rooted sediments; 18.79-37.75 μg/kg dw for leaf tissues and 12.14-39.80 μg/kg dw for root tissues of Z. capensis. The biota-sediment accumulation factors (BSAFs) were greater than one, indicating the potential for Z. capensis to bioaccumulate and intercept the targeted pesticides. A weak insignificant correlation observed between log BSAFs and log Kow indicates that the bioaccumulation of OPPs in tissues of Z. capensis were not dependent on the Kow. Eight of the selected pesticides had root-leaf translocation factors (TFr-l) greater than 1, indicating that Z. capensis can transport these chemicals from roots to leaves. The results from this study implies that this plant species can clean up OPP contamination in the environment.
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Affiliation(s)
- Chijioke Olisah
- DSI/NRF Research Chair, Shallow Water Ecosystems, Nelson Mandela University, Port Elizabeth, South Africa; Department of Botany, Nelson Mandela University, Port Elizabeth, South Africa; Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa; Department of Chemistry, Nelson Mandela University, Port Elizabeth, South Africa.
| | - Lucienne R D Human
- Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa; South African Environmental Observation Network (SAEON) Elwandle Coastal Node Nelson Mandela University, Port Elizabeth, South Africa
| | - Gletwyn Rubidge
- Department of Chemistry, Nelson Mandela University, Port Elizabeth, South Africa
| | - Janine B Adams
- DSI/NRF Research Chair, Shallow Water Ecosystems, Nelson Mandela University, Port Elizabeth, South Africa; Department of Botany, Nelson Mandela University, Port Elizabeth, South Africa; Institute for Coastal and Marine Research (CMR), Nelson Mandela University, Port Elizabeth, South Africa
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Ju C, Li X, He S, Shi L, Yu S, Wang F, Xu S, Cao D, Fang H, Yu Y. Root Uptake of Imidacloprid and Propiconazole Is Affected by Root Composition and Soil Characteristics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:15381-15389. [PMID: 33320669 DOI: 10.1021/acs.jafc.0c02170] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Residual pesticides in soil may be taken up by crops and negatively affect food safety. The uptake mechanism of imidacloprid and propiconazole was studied using wheat roots. The factors affecting root uptake were also studied with different crops and in different soils. Imidacloprid and propiconazole were taken up by wheat roots mainly through the symplastic and apoplastic pathways, respectively. Root protein and lipid contents were the main factors affecting the uptake and accumulation of imidacloprid and propiconazole by different crop roots, respectively. The uptake of imidacloprid and propiconazole in soil by wheat plants was linearly correlated with their concentrations in soil pore water, which were governed by soil characteristics. These results are helpful for understanding and estimating crop uptake of residual pesticides in soils.
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Wei L, Li Z, Sun J, Zhu L. Pollution characteristics and health risk assessment of phthalate esters in agricultural soil and vegetables in the Yangtze River Delta of China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 726:137978. [PMID: 32481218 DOI: 10.1016/j.scitotenv.2020.137978] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/14/2020] [Accepted: 03/15/2020] [Indexed: 06/11/2023]
Abstract
As an important environmental reservoir of phthalate esters (PAEs), soil-plant system constitutes a key exposure pathway to human health. In this study, agricultural soil and vegetable samples were collected from the Yangtze River Delta (approximately 211,700 km2), one of the most developed regions in China, to determine the contamination characteristics of priority PAEs. The total concentrations of six PAEs ranged from 5.42 to 1580 ng·g-1 dry weight in soils and from 10.9 to 16,400 ng·g-1 dry weight in vegetables. Di-(2-ethylhexyl) phthalate (DEHP) accounted for 88.3% and 61.9% of the total PAEs in soils and vegetables, respectively. The spatial distribution of PAEs in the soils was as follows: Shanghai city (70.8-1583 ng·g-1 dw) > Anhui province (46.8-1530 ng·g-1 dw) > Jiangsu province (14.4-558 ng·g-1 dw) > Zhejiang province (5.40-488 ng·g-1 dw). Non-cancer risks exist for adults and children in 6.5% and 7.8% of the sites, respectively. Carcinogenic risks were regarded unacceptable in 5.6% and 1.3% of the sites for adults and children, respectively. The bioconcentration factor (BCF) of PAEs showed positive correlation with lipid content of vegetables. A basic reference of the lipid-content threshold to guarantee the safety of leafy vegetables was proposed based on partition-limited model. We suggested to cultivate vegetables with lipid content <0.21% in most heavily contaminated area in the region. This study provides information for effectively controlling PAEs contamination in soil-plant system in developed districts.
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Affiliation(s)
- Luyun Wei
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Zhiheng Li
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China
| | - Jianteng Sun
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong 525000, China
| | - Lizhong Zhu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
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Li Z, Wang W, Zhu L. A three-phase-successive partition-limited model to predict plant accumulation of organic contaminants from soils treated with surfactants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 261:114071. [PMID: 32062458 DOI: 10.1016/j.envpol.2020.114071] [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: 09/21/2019] [Revised: 01/17/2020] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
The application of surfactants is an effective way to inhibit the migration of organic contaminants (OCs) from soil to plants, and thus would be a great candidate method for producing safe agricultural products in organic-contaminated farmland. In this study, it was found that cetyltrimethyl ammonium bromide (CTMAB) reduced the OCs in cabbage by 22.0-64.1%, and those in lettuce by 18.8-36.5%. We developed a mathematical model to predict the accumulation of OCs in plants in the presence of surfactants. The successive partitioning of OCs among three phases, namely, soil, soil water and plant roots, was considered. The equilibrium of OC between the soil and soil water was scaled using the sorption coefficient of OCs on soils normalized by the soil organic carbon (Koc) and carbon-normalized OCs sorption coefficient with the sorbed surfactants (Kss). To precisely calculate the Koc and Kss, the bioavailable and bound OCs were measured using a sequential extraction method. Linear positive correlations between the logarithm of Koc (or Kss) and the logarithm of the octanol-water partition coefficient (log Kow) of OCs were established for laterite soils, paddy soils and black soils. In the presence of CTMAB, the equilibrium of OCs between the soil water and plant roots was scaled using the carbon-normalized OC sorption coefficient with the sorbed surfactants (Ksf), whose logarithmic value was linearly correlated with the log Kow of the OCs. A three-phase-successive partition-limited model was developed based on these relationships, demonstrating an average prediction accuracy of 76.6 ± 36.8%. Our results indicated that the decrease in bioavailable OCs in soils and the increase in sorption of OCs on roots should be taken into consideration when predicting plant uptake. This research provides a validated mathematical model for predicting the concentration of OCs in plants in the presence of surfactants.
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Affiliation(s)
- Zhiheng Li
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Wei Wang
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Lizhong Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China.
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Ju C, Zhang H, Wu R, Dong S, Yao S, Wang F, Cao D, Xu S, Fang H, Yu Y. Upward translocation of acetochlor and atrazine in wheat plants depends on their distribution in roots. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:135636. [PMID: 31771841 DOI: 10.1016/j.scitotenv.2019.135636] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/16/2019] [Accepted: 11/18/2019] [Indexed: 06/10/2023]
Abstract
Residual acetochlor and atrazine in soils, resulting from their extensive application to maize plants, may affect product safety of the ultimate wheat crop. To determine the potential uptake and accumulation of acetochlor and atrazine by wheat plants, the uptake mechanism, translocation, and subcellular distribution of these two herbicides were studied through hydroponic experiments (10 mg L-1). The results indicated that acetochlor can be taken up through the apoplastic pathway and can accumulate in wheat roots with little upward translocation. However, atrazine could be taken up by roots through the symplastic pathway and subsequently transported to the stems and leaves. Little upward translocation of acetochlor in wheat plants was due to its preferential distribution into root organelles with higher lipid contents. Conversely, the low bioconcentration of atrazine in root organelles and cell walls after uptake led to its easy upward translocation. Uptake of acetochlor and atrazine by wheat roots and the distribution of atrazine to the stems and leaves were predicted well by using the partition-limited model. The obtained results indicated that residual atrazine in soil may be taken up by wheat roots and acropetally translocated, thereby posing a threat to product safety of wheat.
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Affiliation(s)
- Chao Ju
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Hongchao Zhang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Ruilin Wu
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310029, China
| | - Suxia Dong
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Shijie Yao
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Feiyan Wang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310029, China
| | - Duantao Cao
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310029, China
| | - Shiji Xu
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou 310029, China; The Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China.
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Chou TH, Ou MH, Wu TY, Chen DY, Shih YH. Temporal and spatial surveys of polybromodiphenyl ethers (PBDEs) contamination of soil near a factory using PBDEs in northern Taiwan. CHEMOSPHERE 2019; 236:124117. [PMID: 31323549 DOI: 10.1016/j.chemosphere.2019.06.087] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 06/11/2019] [Accepted: 06/11/2019] [Indexed: 06/10/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs), previously commonly used as flame retardants, should be monitored in the environment since some are listed as persistent organic pollutants. A contaminated site near a northern Taiwan factory using decabrominated diphenyl ether (deca-BDE) was identified based on a vegetable PBDEs monitoring project in 2013. The subsequent spatial and temporal survey of that contaminated site shows the contamination ingredients in soils were close to ones used by the factory, indicating that contamination was from the factory, possibly through an exhaust vent. The average concentration of deca-BDE in the main contaminated soil was 615 μg/kg d. w. (dry weight) soil in 2015, slightly decreasing to 604 μg/kg d. w. soil in 2016, increasing to 844 μg/kg d. w. soil in 2017, and then slightly decreasing to 670 μg/kg d. w. soil in 2018. The slight change of deca-BDE and the minor change in low brominated congener level indicate a low degradation rate. The contamination of peripheral sites was around 5000 μg/kg d. w. soil for one PBDEs sampling site that was higher than those around or within the main contaminated farm, indicating serious pollution. Concentrations of PBDEs in different soil depths show that depth 2-15 cm accounted for the greatest PBDEs accumulation, indicating that deca-BDE pollution had been present over time and transported into deeper soil. There can be PBDEs uptake by crops consumed by humans, as shown in our previous studies, so continuous monitoring of PBDEs in this site is important and treatments should be established urgently.
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Affiliation(s)
- Tzu-Ho Chou
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106, Taiwan, ROC
| | - Ming-Han Ou
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106, Taiwan, ROC
| | - Tien-Yu Wu
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106, Taiwan, ROC
| | - De-Yu Chen
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106, Taiwan, ROC
| | - Yang-Hsin Shih
- Department of Agricultural Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 106, Taiwan, ROC.
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Preliminary Review of Sources, Fate, Analytical Challenges and Regulatory Status of Emerging Organic Contaminants in Aquatic Environments in Selected African Countries. CHEMISTRY AFRICA-A JOURNAL OF THE TUNISIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s42250-019-00079-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Ju C, Zhang H, Yao S, Dong S, Cao D, Wang F, Fang H, Yu Y. Uptake, Translocation, and Subcellular Distribution of Azoxystrobin in Wheat Plant ( Triticum aestivum L.). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6691-6699. [PMID: 31135152 DOI: 10.1021/acs.jafc.9b00361] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The uptake mechanism, translocation, and subcellular distribution of azoxystrobin (5 mg kg-1) in wheat plants was investigated under laboratory conditions. The wheat-water system reached equilibrium after 96 h. Azoxystrobin concentrations in roots were much higher than those in stems and leaves under different exposure times. Azoxystrobin uptake by roots was highly linear at different exposure concentrations, while the bioconcentration factors and translocation factors were independent of the exposed concentration at the equilibrium state. Dead roots adsorbed a larger amount of azoxystrobin than fresh roots, which was measured at different concentrations. Azoxystrobin preferentially accumulated in organelles, and the highest distribution proportion was detected in the soluble cell fractions. This study elucidated that the passive transport and apoplastic pathway dominated the uptake of azoxystrobin by wheat roots. Azoxystrobin primarily accumulated in roots and could be acropetally translocated, but its translocation capacity from roots to stems was limited. Additionally, the uptake and distribution of azoxystrobin by wheat plants could be predicted well by a partition-limited model.
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Affiliation(s)
- Chao Ju
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
| | - Hongchao Zhang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
| | - Shijie Yao
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
| | - Suxia Dong
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
| | - Duantao Cao
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
| | - Feiyan Wang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
| | - Hua Fang
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
| | - Yunlong Yu
- Institute of Pesticide and Environmental Toxicology, College of Agriculture and Biotechnology , Zhejiang University , Hangzhou 310029 , China
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Margenat A, Matamoros V, Díez S, Cañameras N, Comas J, Bayona JM. Occurrence and bioaccumulation of chemical contaminants in lettuce grown in peri-urban horticulture. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 637-638:1166-1174. [PMID: 29801210 DOI: 10.1016/j.scitotenv.2018.05.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/03/2018] [Accepted: 05/03/2018] [Indexed: 06/08/2023]
Abstract
Peri-urban horticulture performs environmental and socio-economic functions and provides ecological services to nearby urban areas. Nevertheless, industrialization and water pollution have led to an increase in the exposure of peri-urban vegetables to contaminants such as trace elements (TEs) and organic microcontaminants (OMCs). In this study, the occurrence of chemical contaminants (i.e., 16 TEs, 33 OMCs) in soil and lettuce leaves from 4 farm fields in the peri-urban area of the city of Barcelona was assessed. A rural site, outside the peri-urban area of influence, was selected for comparison. The concentration of TEs and OMCs ranged from non-detectable to 803 mg/kg dw and from non-detectable to 397 μg/kg dw respectively in the peri-urban soil, and from 6 · 10-5 to 4.91 mg/kg fw and from non-detectable to 193 μg/kg fw respectively in lettuce leaves. Although the concentration of Mo, Ni, Pb, and As in the soil of the peri-urban area exceeded the environmental quality guidelines, their occurrence in lettuce complied with human food standards (except for Pb). The many fungicides (carbendazim, dimetomorph, and methylparaben) and chemicals released by plastic pipelines (tris(1-chloro-2-propyl)phosphate, bisphenol F, and 2-mercaptobenzothiazole) used in agriculture were prevalent in the soil and the edible parts of the lettuce. The occurrence of these chemical pollutants in the peri-urban area did not affect the chlorophyll, lipid, or carbohydrate content of the lettuce leaves. PCA (Principal Component Analysis) showed that soil pollution, fungicide application, and irrigation water quality are the most relevant factors determining the presence of contaminants in crops.
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Affiliation(s)
- Anna Margenat
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034 Barcelona, Spain
| | - Víctor Matamoros
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034 Barcelona, Spain.
| | - Sergi Díez
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034 Barcelona, Spain
| | - Núria Cañameras
- Department of Agri-Food Engineering and Biotechnology, UPC, Esteve Terrades 8, Building 4, E-08860 Castelldefels, Spain
| | - Jordi Comas
- Department of Agri-Food Engineering and Biotechnology, UPC, Esteve Terrades 8, Building 4, E-08860 Castelldefels, Spain
| | - Josep M Bayona
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034 Barcelona, Spain
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11
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Yang CY, Wu SC, Lee CC, Shih YH. Translocation of polybrominated diphenyl ethers from field-contaminated soils to an edible plant. JOURNAL OF HAZARDOUS MATERIALS 2018; 351:215-223. [PMID: 29550555 DOI: 10.1016/j.jhazmat.2018.02.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 01/20/2018] [Accepted: 02/21/2018] [Indexed: 06/08/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs), recognised emerging contaminants, widely exist and persist in the environment. Samples were taken from a heavily contaminated farm in Taiwan located near a factory known to regularly use PBDEs. Sweet potato vines (Ipomoea batatas L., a commonly consumed vegetable in Asia) growing in the surrounding farmlands were found to contain a high concentration of PBDEs of 19.36 ng/g. The possibility of PBDEs translocation into sweet potato vines from soil samples was evaluated. To prevent the PBDEs from air through that factory, the pot experiments were performed in a greenhouse, which showed that the PBDEs concentration of 24 congeners (tri- through deca-BDE) in the sweet potato vine after 14-days cultivation was 29.90 ng/g, 40-times higher than that in the contaminated soil. After another 14-days, the PBDE concentration decreased to 12.30 ng/g as high-brominated PBDEs were transformed to medium- and/or low-brominated PBDEs in the sweet potato vine. The bioconcentration factor (BCF) values exceeded 20.0 for most of the deca-, nona-, and octa-BDEs but BCFs were below 18.9 for the rest of the medium- and low-brominated PBDEs. Our results demonstrate that high-brominated PBDEs can translocate into leafy vegetables from soils, and sweet potato vines tend to accumulate high-brominated PBDEs into their edible parts.
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Affiliation(s)
- Chien-Ying Yang
- Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan
| | - Siang Chen Wu
- Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan
| | - Ching-Chang Lee
- Department of Environmental and Occupational Health, Medical College, National Cheng Kung University, Tainan, Taiwan
| | - Yang-Hsin Shih
- Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan.
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Wang Q, Kelly BC. Occurrence, distribution and bioaccumulation behaviour of hydrophobic organic contaminants in a large-scale constructed wetland in Singapore. CHEMOSPHERE 2017; 183:257-265. [PMID: 28550783 DOI: 10.1016/j.chemosphere.2017.05.113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 06/07/2023]
Abstract
This study involved a field-based investigation to assess the occurrence, distribution and bioaccumulation behaviour of hydrophobic organic contaminants in a large-scale constructed wetland. Samples of raw leachate, water and wetland plants, Typha angustifolia, were collected for chemical analysis. Target contaminants included polychlorinated biphenyls (PCBs), organochlorine pesticides (OCP), as well as several halogenated flame retardants (HFRs) and personal care products (triclosan and synthetic musks). In addition to PCBs and OCPs, synthetic musks, triclosan (TCS) and dechlorane plus stereoisomers (syn- and anti-DPs) were frequently detected. Root concentration factors (log RCF L/kg wet weight) of the various contaminants ranged between 3.0 and 7.9. Leaf concentration factors (log LCF L/kg wet weight) ranged between 2.4 and 8.2. syn- and anti-DPs exhibited the greatest RCF and LCF values. A strong linear relationship was observed between log RCF and octanol-water partition coefficient (log KOW). Translocation factors (log TFs) were negatively correlated with log KOW. The results demonstrate that more hydrophobic compounds exhibit higher degrees of partitioning into plant roots and are less effectively transported from roots to plant leaves. Methyl triclosan (MTCS) and 2,8-dichlorodibenzo-p-dioxin (DCDD), TCS degradation products, exhibited relatively high concentrations in roots and leaves., highlighting the importance of degradation/biotransformation. The results further suggest that Typha angustifolia in this constructed wetland can aid the removal of hydrophobic organic contaminants present in this landfill leachate. The findings will aid future investigations regarding the fate and bioaccumulation of hydrophobic organic contaminants in constructed wetlands.
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Affiliation(s)
- Qian Wang
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore
| | - Barry C Kelly
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore.
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Yang GCC. Global challenges and solutions of emerging contaminants: An editorial overview and beyond. CHEMOSPHERE 2017; 168:1222-1229. [PMID: 27817897 DOI: 10.1016/j.chemosphere.2016.10.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Gordon C C Yang
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan; Center for Emerging Contaminants Research, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
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