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Wang J, Yuan H, Wang H, Wang J, Geng Y, Zhang Y, He Z. Enantioselective bioaccumulation, biotransformation and spatial distribution of chiral fungicide difenoconazole in earthworms (Eisenia fetida). CHEMOSPHERE 2024; 361:142404. [PMID: 38782131 DOI: 10.1016/j.chemosphere.2024.142404] [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: 03/25/2024] [Revised: 05/12/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024]
Abstract
The enantioselective environmental behavior of difenoconazole, a widely utilized triazole fungicide commonly detected in agricultural soils, has yet to be comprehensively explored within the earthworm-soil system. To address this research gap, we investigated the bioaccumulation and elimination kinetics, degradation pathways, biotransformation mechanisms, spatial distribution, and toxicity of chiral difenoconazole. The four stereoisomers of difenoconazole were baseline separated and analyzed using SFC-MS/MS. Pronounced enantioselectivity was observed during the uptake phase, with earthworms exhibiting a preference for (2R,4R)-difenoconazole and (2R,4S)-difenoconazole. A total of five transformation products (TPs) were detected and identified using UHPLC-QTOF/MS in the earthworm-soil system. Four of the TPs were detected in both earthworm and soil, and one TP was produced only in eaerthwroms. Hydrolysis and hydroxylation were the primary transformation pathways of difenoconazole in both earthworms and soil. Furthermore, a chiral TP, 3-chloro, 4-hydroxy difenoconazole, was generated with significant enantioselectivity, and molecular docking results indicate the greater catalytic bioactivity of (2R,4R)- and (2R,4S)-difenoconazole, leading to the preferential formation of their corresponding hydroxylated TPs. Furthermore, Mass Spectrometry Imaging (MSI) was applied for the first time to explore the spatial distribution of difenoconazole and the TPs in earthworms, and the "secretory zone" was found to be the dominant region to uptake and biodegrade difenoconazole. ECOSAR predictions highlighted the potentially hazardous impact of most difenoconazole TPs on aquatic ecosystems. These findings are important for understanding the environmental fate of difenoconazole, evaluating environmental risks, and offering valuable insights for guiding scientific bioremediation efforts.
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Affiliation(s)
- Jiafu Wang
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China.
| | - Haiyue Yuan
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China
| | - Hao Wang
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China
| | - Jishi Wang
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China
| | - Yue Geng
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China
| | - Yanwei Zhang
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China
| | - Zeying He
- Key Laboratory for Environmental Factors Control of Agro-product Quality Safety, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, PR China.
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2
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Liu C, Yang F, Wang J, Zhu R, Zhu J, Huang M. Myclobutanil induces cardiotoxicity in developing zebrafish larvae by initiating oxidative stress and apoptosis: The protective role of curcumin. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 279:116484. [PMID: 38820875 DOI: 10.1016/j.ecoenv.2024.116484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/24/2024] [Accepted: 05/18/2024] [Indexed: 06/02/2024]
Abstract
Myclobutanil (MYC) is a common triazole fungicide widely applied in agriculture. MYC extensively exists in the natural environment and can be detected in organisms. However, little is known about MYC-induced embryonic developmental damage. This study aimed to unravel the cardiotoxicity of MYC and the underlying mechanisms, as well as the cardioprotective effect of curcumin (CUR, an antioxidant polyphenol) using the zebrafish model. Here, zebrafish embryos were exposed to MYC at concentrations of 0, 0.5, 1 and 2 mg/L from 4 to 96 h post fertilization (hpf) and cardiac development was assessed. As results, MYC reduced the survival and hatching rate, body length and heart rate, but increased the malformation rate and spontaneous movement. MYC caused abnormal cardiac morphology and function in myl7:egfp transgenic zebrafish, and downregulated cardiac developmental genes. MYC promoted oxidative stress through excessive reactive oxygen species (ROS) accumulation and suppressed the activities of antioxidant enzymes, triggering cardiomyocytic apoptosis via upregulated expression of apoptosis-related genes. These adverse toxicities could be significantly ameliorated by the antioxidant properties of CUR, indicating that CUR rescued MYC-induced cardiotoxicity by inhibiting oxidative stress and apoptosis. Overall, our study revealed the potential mechanisms of oxidative stress and apoptosis in MYC-induced cardiotoxicity in zebrafish and identified the cardioprotection of CUR in this pathological process.
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Affiliation(s)
- Chunlan Liu
- School of Public Health Management, Jiangsu Health Vocational College, Nanjing 211800, PR China
| | - Fan Yang
- Institute of Geriatrics, Affiliated Nantong Hospital of Shanghai University, The Sixth People's Hospital of Nantong, Nantong 226011, PR China
| | - Jingyu Wang
- Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing 210004, PR China
| | - Renfei Zhu
- Department of Hepatobiliary Surgery, Nantong Third People's Hospital, Affiliated Nantong Hospital 3 of Nantong University, Nantong, Jiangsu 226006, PR China.
| | - Jiansheng Zhu
- Department of Public Health, School of Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, PR China.
| | - Mingtao Huang
- Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing 210004, PR China.
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Maldonado-Reina AJ, López-Ruiz R, Marín Sáez J, Romero-González R, Garrido Frenich A. Tracing the dissipation of difenoconazole, its metabolites and co-formulants in tomato: A comprehensive analysis by chromatography coupled to high resolution mass spectrometry in laboratory and greenhouse trials. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 349:123924. [PMID: 38580058 DOI: 10.1016/j.envpol.2024.123924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
The study evaluated Ceremonia 25 EC®, a plant protection product (PPP) containing difenoconazole, in tomato crops, to identify potential risks associated with PPPs, and in addition to this compound, known metabolites from difenoconazole degradation and co-formulants present in the PPP were monitored. An ultra high performance liquid chromatography coupled to quadrupole-Orbitrap mass analyser (UHPLC-Q-Orbitrap-MS) method was validated with a working range of 2 μg/kg (limit of quantification, LOQ) to 200 μg/kg. Difenoconazole degradation followed a biphasic double first-order in parallel (DFOP) kinetic model in laboratory and greenhouse trials, with high accuracy (R2 > 0.9965). CGA-205374, difenoconazole-alcohol, and hydroxy-difenoconazole metabolites were tentatively identified and semi-quantified in laboratory trials by UHPLC-Q-Orbitrap-MS from day 2 to day 30. No metabolites were found in greenhouse trials. Additionally, 13 volatile co-formulants were tentatively identified by gas chromatography (GC) coupled to Q-Orbitrap-MS, detectable up to the 7th day after PPP application. This study provides a comprehensive understanding of difenoconazole dissipation in tomatoes, identification of metabolites, and detection of co-formulants associated with the applied PPP.
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Affiliation(s)
- Antonio Jesús Maldonado-Reina
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), University of Almería, Agri-Food Campus of International Excellence, ceiA3, E-04120, Almería, Spain
| | - Rosalía López-Ruiz
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), University of Almería, Agri-Food Campus of International Excellence, ceiA3, E-04120, Almería, Spain.
| | - Jesús Marín Sáez
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), University of Almería, Agri-Food Campus of International Excellence, ceiA3, E-04120, Almería, Spain; Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, 18071, Granada, Spain
| | - Roberto Romero-González
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), University of Almería, Agri-Food Campus of International Excellence, ceiA3, E-04120, Almería, Spain
| | - Antonia Garrido Frenich
- Research Group "Analytical Chemistry of Contaminants", Department of Chemistry and Physics, Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAMBITAL), University of Almería, Agri-Food Campus of International Excellence, ceiA3, E-04120, Almería, Spain
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Kachangoon R, Vichapong J, Santaladchaiyakit Y, Teshima N. Trace-Level Determination of Triazole Fungicides Using Effervescence-Assisted Liquid-Liquid Microextraction Based on Ternary Deep Eutectic Solvent Prior to High-Performance Liquid Chromatography. ACS OMEGA 2023; 8:21332-21340. [PMID: 37323407 PMCID: PMC10268287 DOI: 10.1021/acsomega.3c02919] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 05/23/2023] [Indexed: 06/17/2023]
Abstract
A simple and sensitive preconcentration method, namely, effervescence-assisted liquid-liquid microextraction based on the ternary deep eutectic solvent method, was developed for enrichment of triazole fungicide residues prior to their determination by high-performance liquid chromatography coupled with UV detection. In this method, a ternary deep eutectic solvent (as extractant) was prepared by combination of octanoic acid, decanoic acid, and dodecanoic acid. The solution was well dispersed with sodium bicarbonate (as effervescence powder) without using auxiliary devices. In order to obtain relatively high extraction efficiency, analytical parameters were investigated and optimized. Under optimum conditions, the proposed method showed good linearity within the range of 1-1000 μg L-1 with a coefficient for determination (R2) greater than 0.997. The low limits of detection (LODs) were in the range of 0.3-1.0 μg L-1. The precisions were assessed from the relative standard deviations (RSDs) of retention time and peak area obtained from intra- (n = 3) and inter-day (n = 5 × 5) experiments, which were greater than 1.21 and 4.79%, respectively. Moreover, the proposed method provided high enrichment factors ranging from 112 to 142 folds. A matrix-match calibration method was used for analysis of real samples. Finally, the developed method was successfully applied for determination of the triazole fungicide in environmental water (near agricultural area), honey, and bean samples, and it represents a promising alternative method for analysis of triazoles. The recoveries of the studied triazoles were obtained in the range of 82-106% with an RSD less than 4.89.
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Affiliation(s)
- Rawikan Kachangoon
- Creative
Chemistry and Innovation Research Unit, Department of Chemistry and
Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
| | - Jitlada Vichapong
- Creative
Chemistry and Innovation Research Unit, Department of Chemistry and
Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
- Multidisciplinary
Research Unit of Pure and Applied Chemistry (MRUPAC), Department of
Chemistry and Center of Excellent for Innovation in Chemistry, Faculty
of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
| | - Yanawath Santaladchaiyakit
- Department
of Chemistry, Faculty of Engineering, Rajamangala
University of Technology Isan, Khon Kaen
Campus, Khon Kaen 40000, Thailand
| | - Norio Teshima
- Department
of Applied Chemistry, Aichi Institute of
Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
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5
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Pan K, Liu Z, Li Z, Chen M, Quan Q, Yu X, Lei Y, Mo Q, Wang B, Guan T, Lei H. Identifying fungicide difenoconazole as illegal growth regulator in vegetable: Computer-aided hapten similarity to enhance immunoassay sensitivity. Anal Chim Acta 2023; 1258:341182. [PMID: 37087291 DOI: 10.1016/j.aca.2023.341182] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/24/2023] [Accepted: 04/05/2023] [Indexed: 04/24/2023]
Abstract
Difenoconazole, a fungicide with broad-spectrum properties, has recently been found to have been used illegally used as a plant growth regulator in Brassica campestris, with the intent of inducing thick stems and dark green leaves. However, analysts have encountered challenges in implementing a rapid surveillance screening approach for this purpose. In this study, a novel hapten was designed to improve the analytical performance of difenoconazole immunoassay. Specifically, the triazole of the original hapten was replaced with a benzene ring, guided by molecular simulation. This led to the development of a very sensitive antibody and the subsequent development of a competitive indirect enzyme linked immunosorbent assay (ciELISA) for the detection of difenoconazole in vegetable samples. The assay exhibited a working range of 0.16 ng mL-1 to 9.64 ng mL-1, with a detection limit of 0.05 ng mL-1. Upon analysis of blind samples, a strong correlation was observed between the ciELISA and HPLC-MS/MS methods. As a result, the proposed technique may prove to be an excellent tool for the rapid detection of difenoconazole overuse and adulteration in vegetables.
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Affiliation(s)
- Kangliang Pan
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Zhiwei Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, 510642, China
| | - Zhaodong Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, 510642, China
| | - Mindan Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, 510642, China
| | - Qiqi Quan
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaoqin Yu
- Sichuan Institute of Food Inspection, Key Laboratory of Baijiu Supervising Technology for State Market Regulation, Sichuan, Chengdu, 610000, China
| | - Yi Lei
- Guangdong Institute of Food Inspection, Zengcha Road, Guangzhou, 510435, China
| | - Qiuhua Mo
- Bioeasy Technology, Inc., Shenzhen, 518102, China
| | - Bingzhi Wang
- Bioeasy Technology, Inc., Shenzhen, 518102, China
| | - Tian Guan
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, 510642, China.
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou, 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Licheng Detection and Certification Group Co., Ltd, Guangdong, Zhongshan, 528403, China.
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Jaroensan J, Khiaophong W, Kachangoon R, Vichapong J. Efficient analyses of triazole fungicides in water, honey and soy milk samples by popping candy-generated CO 2 and sugaring-out-assisted supramolecular solvent-based microextraction prior to HPLC determinations. RSC Adv 2023; 13:4195-4201. [PMID: 36744283 PMCID: PMC9890668 DOI: 10.1039/d2ra06560f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/18/2023] [Indexed: 02/04/2023] Open
Abstract
An enrichment method, namely popping candy-generated CO2 and sugaring-out-assisted supramolecular solvent-based microextraction (PGS-SUPRA), was investigated for the determination of triazole fungicide residues in water, honey and soy milk samples. The extraction process was carried out by adding popping candies into a centrifuge tube. Consequently, rapid dispersion and mass transfer of extractants can be achieved without using dispersants and auxiliary devices, and therefore, the extraction efficiency increased. The extraction parameters affecting the efficiency of the developed method were investigated. The presented method was then analysed by high-performance liquid chromatography. Under the selected condition, the wide linearity of triazole fungicides after preconcentration by the proposed microextraction method ranged from 30 to 1000 μg L-1 for triadimefon and from 90 to 1000 μg L-1 for myclobutanil, tebuconazole and hexaconazole, with a coefficient for determination (R 2) greater than 0.992. The limits of detection (LODs) and limits of quantitation (LOQs) were in the range of 10-30 μg L-1 and 30-90 μg L-1, respectively. The precisions were assessed from the relative standard deviations (RSDs) of the retention time and peak area obtained from intra- (n = 3) and inter-day (n = 3 × 5) experiments, and were greater than 1.66% and 13.52%, respectively. Moreover, the proposed method provided high enhancement factors (EnFs) ranging from 14 to 51 folds. This technique has been prosperously applied for the extraction of fungicide residues in water, honey and soy milk samples with a recovery within the range of 60-114%. Overall, the developed method was found to be advantageous as compared with other sample preparation methods.
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Affiliation(s)
- Jedsada Jaroensan
- Creative Chemistry and Innovation Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham UniversityMaha Sarakham44150Thailand+66 4375 4246+66 4375 4246
| | - Wannipha Khiaophong
- Creative Chemistry and Innovation Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham UniversityMaha Sarakham44150Thailand+66 4375 4246+66 4375 4246
| | - Rawikan Kachangoon
- Creative Chemistry and Innovation Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham UniversityMaha Sarakham44150Thailand+66 4375 4246+66 4375 4246
| | - Jitlada Vichapong
- Creative Chemistry and Innovation Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahasarakham UniversityMaha Sarakham44150Thailand+66 4375 4246+66 4375 4246,Multidisciplinary Research Unit of Pure and Applied Chemistry (MRUPAC), Department of Chemistry and Center of Excellent for Innovation in Chemistry, Faculty of Science, Mahasarakham UniversityMaha Sarakham44150Thailand
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7
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Thanh Nguyen D, Phuong Nguyen L, Duc Luu P, Quoc Vu T, Quynh Nguyen H, Phat Dao T, Nhut Pham T, Quoc Tran T. Surface-enhanced Raman scattering (SERS) from low-cost silver nanoparticle-decorated cicada wing substrates for rapid detection of difenoconazole in potato. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 275:121117. [PMID: 35364411 DOI: 10.1016/j.saa.2022.121117] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/22/2022] [Accepted: 03/06/2022] [Indexed: 06/14/2023]
Abstract
Potato is one of the most important food crops worldwide in terms of human consumption. However, potato farmers employ a variety of pesticides to protect crops from harmful insects and illnesses, and difenoconazole is a commonly used one that has severe effects on human health and the environment. Therefore, detecting difenoconazole quickly and correctly is critical. In this work, we fabricated AgNPs/cicada wing substrates using natural cicada segments, decorated with silver nanoparticles for surface-enhanced Raman scattering (SERS) measurements to detect trace amounts of difenoconazole in potatoes. Results indicated that a linear relationship with the coefficient of detection (R2) of 0.987 and the detection limit (LOD) of 0.016 ppm was observed by targeting a distinctive peak at 808 cm-1 and logarithmic difenoconazole concentrations of 0.1 to 100 ppm. In addition, difenoconazole LODs in potatoes were 63 μg/kg, lower than those specified by the EU (0.1 mg/kg) and Vietnam (4 mg/kg) utilizing this new technique. Therefore, this proposed SERS method could be used to detect difenoconazole in potatoes at trace levels.
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Affiliation(s)
- Duong Thanh Nguyen
- Intitute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, 100000 Hanoi, Vietnam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, 100000 Hanoi, Vietnam.
| | - Linh Phuong Nguyen
- Hanoi Medical University, 1 Ton That Tung, Dong Da district, Hanoi, Vietnam
| | - Phuong Duc Luu
- Intitute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, 100000 Hanoi, Vietnam
| | - Thai Quoc Vu
- Intitute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay district, Hanoi, Vietnam
| | - Hoa Quynh Nguyen
- Intitute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, 100000 Hanoi, Vietnam
| | - Tan Phat Dao
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam; Faculty of Food and Environmental Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
| | - Tri Nhut Pham
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam; Faculty of Food and Environmental Engineering, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam.
| | - Toan Quoc Tran
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, 100000 Hanoi, Vietnam; Intitute of Natuaral Products Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, 100000 Hanoi, Vietnam.
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Martínez-Escudero CM, Garrido I, Flores P, Hellín P, Contreras-López F, Fenoll J. Remediation of triazole, anilinopyrimidine, strobilurin and neonicotinoid pesticides in polluted soil using ozonation and solarization. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 310:114781. [PMID: 35219209 DOI: 10.1016/j.jenvman.2022.114781] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
This study aimed to investigate the effectiveness of ozonation and solarization techniques for the removal of different types of pesticides from soil during the summer season. The effect of two experimental parameters (temperature and ozone application mode) on the pesticide degradation was evaluated. The results showed that solarization (S), solarization with surface ozonation (SOS), and solarization with deep ozonation (SOD) enhanced pesticide degradation rates in comparison with the control (untreated soil, C). The triazole, anilinopyrimidine, strobilurin and neonicotinoid pesticides showed similar behaviour under S and SOS conditions. The highest decrease was found in SOD, indicating the significant effect of temperature and ozone application mode on the efficiency of the ozonation treatment. Thus, a higher soil temperature and a longer accumulated time at high temperature in treatments S, SOS and SOD were observed due to solarization process. In addition, the removal efficiency was enhanced with exposure time. Finally, the main 15 transformation products were identified during SOD treatment. The results suggest that solarization combined with ozonation techniques allows decontamination of soil containing pesticide residues.
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Affiliation(s)
- C M Martínez-Escudero
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institute of Agri-Food Research and Development, C/ Mayor S/n. La Alberca, 30150, Murcia, Spain.
| | - I Garrido
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institute of Agri-Food Research and Development, C/ Mayor S/n. La Alberca, 30150, Murcia, Spain
| | - P Flores
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institute of Agri-Food Research and Development, C/ Mayor S/n. La Alberca, 30150, Murcia, Spain
| | - P Hellín
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institute of Agri-Food Research and Development, C/ Mayor S/n. La Alberca, 30150, Murcia, Spain
| | - F Contreras-López
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institute of Agri-Food Research and Development, C/ Mayor S/n. La Alberca, 30150, Murcia, Spain
| | - J Fenoll
- Sustainability and Quality Group of Fruit and Vegetable Products, Murcia Institute of Agri-Food Research and Development, C/ Mayor S/n. La Alberca, 30150, Murcia, Spain.
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9
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Liu J, Xu X, Wu A, Song S, Xu L, Xu C, Liu L, Kuang H. Rapid and sensitive determination of difenoconazole in cucumber and pear samples using an immunochromatographic assay. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Patil VK, Wagh UB, Phalak RP, Bhirud JD, Narkhede HP. A novel validated simple derivatization liquid chromatographic method with diode array detection for the simultaneous determination of mancozeb, azoxystrobin and difenoconazole in pesticide dosage form. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:907-920. [PMID: 35166733 DOI: 10.1039/d1ay01926k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A novel, rapid and simple reverse-phase high performance liquid chromatography (RP-HPLC) method for the simultaneous determination of three pesticides - mancozeb, azoxystrobin and difenoconazole by derivatization with ethyl iodide is presented. Analysis was performed on a C18 column (Agilent Eclipse plus, 150 mm × 4.6 mm; 5 μ) with the mobile phase consisting of acetonitrile + methanol (90 + 10 v/v) - water (0.1% v/v trifluoroacetic acid) (60 : 40, v/v) pumped isocratically at a flow rate of 1.0 mL min-1 and detection wavelength of 205 nm and 272 nm. The factors affecting the derivatization reaction and separation conditions were carefully evaluated and optimized. The method was linear over the concentration range of 3.50 mg L-1 to 31.48 mg L-1 for mancozeb, 0.32 mg L-1 to 2.85 mg L-1 for azoxystrobin and 0.32 mg L-1 to 2.89 mg L-1 for difenoconazole. The new method was successfully applied for the analysis of mancozeb, azoxystrobin and difenoconazole in the pesticide formulation with range recoveries of 99.46% to 100.76%, 99.07% to 101.09% and 98.59% to 101.59%, respectively. The present method is suitable and favorable for the simultaneous separation and analysis of tertiary mixture analytes on account of its sensitivity, rapidity and cost-effectiveness. In addition, it could have excellent application prospects for the simultaneous determination of all three pesticides in other formulated products.
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Affiliation(s)
- Vilas K Patil
- D. D. N. Bhole College, Bhusawal, Dist.-Jalgaon, Maharashtra-425201, India.
| | - Ujwala B Wagh
- Jain Irrigation Systems Limited, Jalgaon, Maharashtra-425001, India
| | - Raju P Phalak
- D. D. N. Bhole College, Bhusawal, Dist.-Jalgaon, Maharashtra-425201, India
| | | | - Hemant P Narkhede
- Smt. P. K. Kotecha Mahila Mahavidyalaya, Bhusawal, Dist.-Jalgaon, Maharashtra-425201, India.
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11
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Hergueta-Castillo ME, López-Rodríguez E, López-Ruiz R, Romero-González R, Garrido Frenich A. Targeted and untargeted analysis of triazole fungicides and their metabolites in fruits and vegetables by UHPLC-orbitrap-MS 2. Food Chem 2022; 368:130860. [PMID: 34425340 DOI: 10.1016/j.foodchem.2021.130860] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/29/2021] [Accepted: 08/11/2021] [Indexed: 12/22/2022]
Abstract
Two extraction methods based on solid liquid extraction and Quick, Easy, Cheap, Effective, Rugged and Safe procedure were developed for the determination of 21 triazole compounds and 5 metabolites, including triazole derivative metabolites as 1,2,4-triazole and 1,2,4-triazol 1-yl-acetic, in courgette, orange, grape and strawberry. The analysis was performed in 10.5 min, using ultra-high performance liquid chromatography coupled to Q-Orbitrap mass analyser. The proposed method was validated according to SANTE 12682/2019. Limits of quantification were ≤10 µg kg-1 for all the compounds, except for 1,2,4-triazol, 1,2,4-triazol 1-yl-acetic, difenoconazole-alcohol and prothioconazole that were 50 µg kg-1. Finally, the method was successfully applied to the analysis of 30 samples. More than 30% of these samples contained residues of triazole compounds. The fungicide most frequently found was myclobutanil. Furthermore, a suspect screening analysis was carried out to search pesticides present in the samples, detecting some of them at concentrations higher than Maximum Residue Limits.
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Affiliation(s)
- María Elena Hergueta-Castillo
- Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), Agrifood Campus of International Excellence ceiA3, University of Almería, E-04120 Almería, Spain
| | - Encarnación López-Rodríguez
- Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), Agrifood Campus of International Excellence ceiA3, University of Almería, E-04120 Almería, Spain
| | - Rosalía López-Ruiz
- Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), Agrifood Campus of International Excellence ceiA3, University of Almería, E-04120 Almería, Spain
| | - Roberto Romero-González
- Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), Agrifood Campus of International Excellence ceiA3, University of Almería, E-04120 Almería, Spain
| | - Antonia Garrido Frenich
- Department of Chemistry and Physics (Analytical Chemistry Area), Research Centre for Mediterranean Intensive Agrosystems and Agri-Food Biotechnology (CIAIMBITAL), Agrifood Campus of International Excellence ceiA3, University of Almería, E-04120 Almería, Spain.
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12
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Šelešovská R, Schwarzová-Pecková K, Sokolová R, Krejčová K, Martinková-Kelíšková P. The first study of triazole fungicide difenoconazole oxidation and its voltammetric and flow amperometric detection on boron doped diamond electrode. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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13
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Liu G, Tian M, Lu M, Shi W, Li L, Gao Y, Li T, Xu D. Preparation of magnetic MOFs for use as a solid-phase extraction absorbent for rapid adsorption of triazole pesticide residues in fruits juices and vegetables. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1166:122500. [PMID: 33578273 DOI: 10.1016/j.jchromb.2020.122500] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/06/2020] [Accepted: 12/13/2020] [Indexed: 11/16/2022]
Abstract
Detection of low levels of triazole fungicides in agricultural product matrices is important. Although several detection methods have been developed, all have some drawbacks, such as being time-consuming, requiring complex sample pretreatment, and consuming large volumes of organic solvents. There is an urgent need for a simple and rapid detection method for triazole fungicides. In this study, the adsorbent composite material magnetic MOFs based on Fe3O4-MWCNT was synthesized by in-situ polymerization at room temperature, and was applied to extract triazole pesticides from fruits and vegetables. High-performance liquid chromatography-tandem mass spectrometry was used for quantification. Under optimized conditions, the constructed detection method showed a low detection (LOD) of 0.52-1.83 μg/L (S/N = 3) and wide linear range of 5.00-500.00 μg/L for triazole fungicides in the fruit and vegetable samples. The method recovery for spiked fungicides (10, 50, and 100 μg/L) in cabbage, spinach, orange juice, and apple juice ranged from 62.80% to 94.20%. The constructed detection method has a lower detection limit than previously reported methods and has a higher sensitivity for triazole pesticide residues in complex matrices.
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Affiliation(s)
- Guangyang Liu
- College of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056021, PR China; Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, PR China.
| | - Mingshuo Tian
- College of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056021, PR China
| | - Meng Lu
- College of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056021, PR China
| | - Weiye Shi
- Institute of Biological Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, PR China
| | - Lingyun Li
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, PR China
| | - Yuhang Gao
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, PR China
| | - Tengfei Li
- College of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056021, PR China.
| | - Donghui Xu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, PR China.
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14
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Li J, Dong C, An W, Zhang Y, Zhao Q, Li Z, Jiao B. Simultaneous Enantioselective Determination of Two New Isopropanol-Triazole Fungicides in Plant-Origin Foods Using Multiwalled Carbon Nanotubes in Reversed-Dispersive Solid-Phase Extraction and Ultrahigh-Performance Liquid Chromatography-Tandem Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:5969-5979. [PMID: 32347725 DOI: 10.1021/acs.jafc.0c01385] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A simple and sensitive enantiomeric analytical method was established for the determination of two new isopropanol-triazole fungicides mefentrifluconazole and ipfentrifluconazole in plant-origin foods using ultrahigh-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The best enantioseparation of the four target stereoisomers was achieved on a Chiral MX(2)-RH column within 7 min by reversed-phase liquid chromatography, which is a significant improvement in the resolution of different chiral compounds under one set of conditions. A simple and effective pretreatment procedure was developed for the extraction and purification of the two target chiral fungicides using reversed-dispersive solid-phase extraction (r-DSPE) with multiwalled carbon nanotubes (MWCNTs). The influence of the type and amount of MWCNTs on the purification efficiencies and recoveries was evaluated. The mean recoveries for all four stereoisomers were in the range of 76.9-91.2%, with relative standard deviation (RSD) values below 7.2%. The limit of quantification (LOQ) of all stereoisomers of mefentrifluconazole and ipfentrifluconazole was 5 μg/kg for all tested matrixes. The results of the method validation and real samples analysis confirm that the established method is efficient and reliable for the enantiomeric determination of mefentrifluconazole and ipfentrifluconazole in plant-origin food samples.
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Affiliation(s)
- Jing Li
- Citrus Research Institute, Southwest University & Chinese Academy of Agricultural Sciences, Chongqing 400712, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, People's Republic of China
- Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, People's Republic of China
| | - Chao Dong
- Citrus Research Institute, Southwest University & Chinese Academy of Agricultural Sciences, Chongqing 400712, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, People's Republic of China
- Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, People's Republic of China
| | - Wenjin An
- Citrus Research Institute, Southwest University & Chinese Academy of Agricultural Sciences, Chongqing 400712, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, People's Republic of China
- Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, People's Republic of China
| | - Yaohai Zhang
- Citrus Research Institute, Southwest University & Chinese Academy of Agricultural Sciences, Chongqing 400712, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, People's Republic of China
- Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, People's Republic of China
| | - Qiyang Zhao
- Citrus Research Institute, Southwest University & Chinese Academy of Agricultural Sciences, Chongqing 400712, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, People's Republic of China
- Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, People's Republic of China
| | - Zhixia Li
- Citrus Research Institute, Southwest University & Chinese Academy of Agricultural Sciences, Chongqing 400712, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, People's Republic of China
- Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, People's Republic of China
| | - Bining Jiao
- Citrus Research Institute, Southwest University & Chinese Academy of Agricultural Sciences, Chongqing 400712, People's Republic of China
- Laboratory of Quality and Safety Risk Assessment for Citrus Products, Ministry of Agriculture, Chongqing 400712, People's Republic of China
- Quality Supervision and Testing Center for Citrus and Seedling, Ministry of Agriculture, Chongqing 400712, People's Republic of China
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15
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Chang W, Nie J, Yan Z. Enantioselective Behavior of Chiral Difenoconazole in Apple and Field Soil. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 103:501-505. [PMID: 31214756 DOI: 10.1007/s00128-019-02652-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
Difenoconazole is a universal chiral fungicide which is widely used in apples. Recently, it is still employed as racemic mixtures without distinction of the enantiomers, which may lead to an incomplete risk assessment. Here, we analyzed the stereoselective degradation of difenoconazole in apple fruits and open-field soil using an HPLC-UV system. Different trends were established in various apple varieties under identical environmental conditions. No significant differences were found in its enantioselectivity of the degradation processes applied in the field soil of an apple orchard. However, preferential dissipation of (2R,4R)-difenoconazole and (2R,4S)-difenoconazole was observed in Hanfu and Fuji apples, resulting in the enrichment of stereoisomers of (2S,4S)-difenoconazole and (2S,4R)-difenoconazole. Meanwhile, no significant enantioselectivity was detected in Huahong apples. The present study will provide additional information that contributes to the comprehensive evaluation of the risks posed by the application of chiral difenoconazole in agricultural production practices.
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Affiliation(s)
- Weixia Chang
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xing Cheng), Ministry of Agriculture and Rural Affairs, Xingcheng, 125100, People's Republic of China
| | - Jiyun Nie
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xing Cheng), Ministry of Agriculture and Rural Affairs, Xingcheng, 125100, People's Republic of China.
| | - Zhen Yan
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xing Cheng), Ministry of Agriculture and Rural Affairs, Xingcheng, 125100, People's Republic of China
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16
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Surface-enhanced Raman scattering of core-shell Au@Ag nanoparticles aggregates for rapid detection of difenoconazole in grapes. Talanta 2019; 191:449-456. [DOI: 10.1016/j.talanta.2018.08.005] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/29/2018] [Accepted: 08/01/2018] [Indexed: 12/15/2022]
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17
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Teng M, Qi S, Zhu W, Wang Y, Wang D, Dong K, Wang C. Effects of the bioconcentration and parental transfer of environmentally relevant concentrations of difenoconazole on endocrine disruption in zebrafish (Danio rerio). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 233:208-217. [PMID: 29096293 DOI: 10.1016/j.envpol.2017.10.063] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 10/12/2017] [Accepted: 10/15/2017] [Indexed: 06/07/2023]
Abstract
Difenoconazole, a typical triazole fungicide, inhibits lanosterol-14R-demethylase (CYP51) to prevent fungal sterol synthesis and its residues are frequently detected in the environment due to its wide application. Previous studies have demonstrated that difenoconazole altered the triglyceride levels, and gene expression relevant to cholesterol biosynthesis in zebrafish. However, endocrine-disruption in the hypothalamus-pituitary-gonadal-liver (HPGL) axis, the effects of transferring to offspring, and the underlying mechanisms of difenoconazole in aquatic organisms are still unknown. In this study, we defined the effects of difenoconazole at environmental concentrations on endocrine disturbance using zebrafish as an experimental model. The results indicated that difenoconazole induced a significant change in the somatic index, and pathological variations in tissues, and steroid hormone levels. RT-PCR experiments further confirmed that difenoconazole significantly induced expression alteration of lhr, hsd3β, hsd11β, cyp19a in the ovary and star, cyp19a, cyp3c1 in the testis, and erα genes in livers. In addition, difenoconazole exposure in parental zebrafish affected the hatchability and length of its offspring. Moreover, the burdens of difenoconazole and difenoconazole alcohol in females were higher than in males. These findings highlighted that difenoconazole exposure at environmentally relevant concentrations elicited estrogenic endocrine-disruption effects via altering homeostasis of sex steroid hormones in the HPGL axis and the adverse effects can be transferred to the offspring.
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Affiliation(s)
- Miaomiao Teng
- College of Sciences, China Agricultural University, Beijing, China
| | - Suzhen Qi
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wentao Zhu
- College of Sciences, China Agricultural University, Beijing, China
| | - Yao Wang
- College of Sciences, China Agricultural University, Beijing, China
| | - Dezhen Wang
- College of Sciences, China Agricultural University, Beijing, China
| | - Kai Dong
- Shandong Ruan Gas Company, Shandong, China
| | - Chengju Wang
- College of Sciences, China Agricultural University, Beijing, China.
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18
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He R, Fan J, Tan Q, Lai Y, Chen X, Wang T, Jiang Y, Zhang Y, Zhang W. Enantioselective determination of metconazole in multi matrices by high-performance liquid chromatography. Talanta 2018; 178:980-986. [DOI: 10.1016/j.talanta.2017.09.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/07/2017] [Accepted: 09/16/2017] [Indexed: 11/16/2022]
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19
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Zhao F, Liu J, Xie D, Lv D, Luo J. A novel and actual mode for study of soil degradation and transportation of difenoconazole in a mango field. RSC Adv 2018; 8:8671-8677. [PMID: 35539853 PMCID: PMC9078551 DOI: 10.1039/c8ra00251g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 06/20/2019] [Accepted: 02/19/2018] [Indexed: 12/04/2022] Open
Abstract
To supply actual data for assessing the potential threat from difenoconazole to the ecosystem, its practical environmental behaviors in a mango field were investigated through a novel mode. After optimization, a UPLC-MS/MS determination method with good accuracy and stability was developed that could be used for the residue determination. Difenoconazole residue was in situ sampled, and its degradation and transportation activity, which reflected the actual transfer characteristics in the natural environment, were researched. The results showed that the half-life of difenoconazole in the soil was 15.4 days, which may be accumulated in a year-round agricultural production system. The residue was detected in the rain settled underground, which showed that the residue transported gradually with the rainfall in vertical and horizontal directions. The results showed that difenoconazole would transport with the rainfall, although the process was slow. All the data showed that the soil ecosystem, and probably also the aquatic ecosystem, would be affected by difenoconazole residue. Actual data for assessing the potential threat from the environmental behaviors of the difenoconazole to the ecosystem in mango field could be provided by the novel experimental design.![]()
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Affiliation(s)
- Fangfang Zhao
- Analysis & Testing Center
- Chinese Academy of Tropical Agricultural Sciences
- Haikou
- China
- Laboratory of Quality & Safety Risk Assessment for Tropical Products(Haikou)
| | - Jingkun Liu
- Environment and Plant Protection Institute
- Chinese Academy of Tropical Agricultural Sciences
- Haikou
- China
| | - Defang Xie
- Analysis & Testing Center
- Chinese Academy of Tropical Agricultural Sciences
- Haikou
- China
- Laboratory of Quality & Safety Risk Assessment for Tropical Products(Haikou)
| | - Daizhu Lv
- Analysis & Testing Center
- Chinese Academy of Tropical Agricultural Sciences
- Haikou
- China
- Laboratory of Quality & Safety Risk Assessment for Tropical Products(Haikou)
| | - Jinhui Luo
- Analysis & Testing Center
- Chinese Academy of Tropical Agricultural Sciences
- Haikou
- China
- Laboratory of Quality & Safety Risk Assessment for Tropical Products(Haikou)
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20
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Chen L, Li R, Diao J, Tian Z, Di S, Zhang W, Cheng C, Zhou Z. Tissue distribution and toxicity effects of myclobutanil enantiomers in lizards (Eremias argus). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 145:623-629. [PMID: 28806564 DOI: 10.1016/j.ecoenv.2017.07.017] [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: 04/19/2017] [Revised: 07/03/2017] [Accepted: 07/07/2017] [Indexed: 06/07/2023]
Abstract
In recent years, serious environmental pollution has caused a decrease in the abundance of many species worldwide. Reptiles are the most diverse group of terrestrial vertebrates. There are large amounts of toxicological data available regarding myclobutanil, but the adverse effects of myclobutanil on lizards has not been widely reported. In this study, treatment groups were orally administered a single-dose of myclobutanil (20mg/kg body weight (bw)). Subsequently, it was found that there were differences in myclobutanil levels between the different tissues and concentrations also changed with degradation time. The tissue concentrations of myclobutanil decreased in the order of: stomach > liver > lung > blood > testis > kidney > heart > brain. Based on our results, the liver and testis were considered to be the main target organs in lizards, indicating that the myclobutanil could induce potential hepatic and reproductive toxicity on lizards. Meanwhile, it was also demonstrated that the toxic effects of myclobutanil was different in different species, and the distribution of different pesticides in lizards were different.
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Affiliation(s)
- Li Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China
| | - Ruiting Li
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China
| | - Jinling Diao
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China
| | - Zhongnan Tian
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China
| | - Shanshan Di
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China
| | - Wenjun Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China
| | - Cheng Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University, Yuanmingyuan west road 2, Beijing 100193, China.
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21
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Identification and characterization of pesticide metabolites in Brassica species by liquid chromatography travelling wave ion mobility quadrupole time-of-flight mass spectrometry (UPLC-TWIMS-QTOF-MS). Food Chem 2017; 244:292-303. [PMID: 29120785 DOI: 10.1016/j.foodchem.2017.09.131] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 01/24/2023]
Abstract
A new mass spectrometric method for evaluating metabolite formation of the pesticides thiacloprid, azoxystrobin, and difenoconazole was developed for the Brassica species pak choi and broccoli. Both, distribution and transformation kinetics of the active compounds and their metabolites were analyzed by UPLC-TWIMS-QTOF-MS. Additionally, HR-MS analysis and structure elucidation tools such as diagnostic ions, isotopic matches, and collision cross sections were applied for metabolites identification. Following the application of two plant protection products (containing the above-mentioned active compounds) in a greenhouse study plant material was cryo-milled and extracted with water/methanol. The residual levels of active compounds were identified at certain timepoints during pre-harvest intervals and in the final products. Different phase I and phase II metabolites of the pesticides were identified in different plant organs such as leaves, stems, (broccoli) heads, and roots. Three individual degradation pathways and distribution profiles are suggested including eight thiacloprid, eleven azoxystrobin and three difenoconazole metabolites.
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22
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Liu B, Feng J, Sun X, Sheng W, Zhang Y, Wang S. Development of an Enzyme-Linked Immunosorbent Assay for the Detection of Difenoconazole Residues in Fruits and Vegetables. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0983-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Ge J, Cui K, Yan H, Li Y, Chai Y, Liu X, Cheng J, Yu X. Uptake and translocation of imidacloprid, thiamethoxam and difenoconazole in rice plants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 226:479-485. [PMID: 28454637 DOI: 10.1016/j.envpol.2017.04.043] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
Uptake and translocation of imidacloprid (IMI), thiamethoxam (THX) and difenoconazole (DFZ) in rice plants (Oryza sativa L.) were investigated with a soil-treated experiment at two application rates: field rate (FR) and 10*FR under laboratory conditions. The dissipation of the three compounds in soil followed the first-order kinetics and DFZ showed greater half-lives than IMI and THX. Detection of the three compounds in rice tissues indicated that rice plants could take up and accumulate these pesticides. The concentrations of IMI and THX detected in leaves (IMI, 10.0 and 410 mg/kg dw; THX, 23.0 and 265 mg/kg dw) were much greater than those in roots (IMI, 1.37 and 69.3 mg/kg dw; THX, 3.19 and 30.6 mg/kg dw), which differed from DFZ. The DFZ concentrations in roots (15.6 and 79.1 mg/kg dw) were much greater than those in leaves (0.23 and 3.4 mg/kg dw). The bioconcentration factor (BCF), representing the capability of rice to accumulate contaminants from soil into plant tissues, ranged from 1.9 to 224.3 for IMI, from 2.0 to 72.3 for THX, and from 0.4 to 3.2 for DFZ at different treated concentrations. Much higher BCFs were found for IMI and THX at 10*FR treatment than those at FR treatment, however, the BCFs of DFZ at both treatments were similar. The translocation factors (TFs), evaluating the capability of rice to translocate contaminants from the roots to the aboveground parts, ranged from 0.02 to 0.2 for stems and from 0.02 to 9.0 for leaves. The tested compounds were poorly translocated from roots to stems, with a TF below 1. However, IMI and THX were well translocated from roots to leaves. Clothianidin (CLO), the main metabolite of THX, was detected at the concentrations from 0.02 to 0.5 mg kg-1 in soil and from 0.07 to 7.0 mg kg-1 in plants. Concentrations of CLO in leaves were almost 14 times greater than those in roots at 10*FR treatment.
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Affiliation(s)
- Jing Ge
- Key Laboratory of Food Quality and Safety of Jiangsu Province, State Key Laboratory Breeding Base, Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, Nanjing 210014, China; Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
| | - Kai Cui
- Department of Biotechnology, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Huangqian Yan
- Key Laboratory of Food Quality and Safety of Jiangsu Province, State Key Laboratory Breeding Base, Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, Nanjing 210014, China
| | - Yong Li
- Key Laboratory of Food Quality and Safety of Jiangsu Province, State Key Laboratory Breeding Base, Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, Nanjing 210014, China; Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
| | - Yangyang Chai
- Key Laboratory of Food Quality and Safety of Jiangsu Province, State Key Laboratory Breeding Base, Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, Nanjing 210014, China; Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
| | - Xianjin Liu
- Key Laboratory of Food Quality and Safety of Jiangsu Province, State Key Laboratory Breeding Base, Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, Nanjing 210014, China
| | - Jiangfeng Cheng
- Department of Biotechnology, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Xiangyang Yu
- Key Laboratory of Food Quality and Safety of Jiangsu Province, State Key Laboratory Breeding Base, Key Laboratory of Control Technology and Standard for Agro-product Safety and Quality, Ministry of Agriculture, Nanjing 210014, China; Institute of Food Quality and Safety, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China.
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Chen X, Dong F, Xu J, Liu X, Chen Z, Liu N, Zheng Y. Enantioseparation and determination of isofenphos-methyl enantiomers in wheat, corn, peanut and soil with Supercritical fluid chromatography/tandem mass spectrometric method. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1015-1016:13-21. [DOI: 10.1016/j.jchromb.2016.02.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 01/31/2016] [Accepted: 02/03/2016] [Indexed: 11/26/2022]
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25
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Huang AG, Tu X, Liu L, Wang GX, Ling F. The oxidative stress response of myclobutanil and cyproconazole on Tetrahymena thermophila. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 41:211-218. [PMID: 26724607 DOI: 10.1016/j.etap.2015.12.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 12/10/2015] [Accepted: 12/14/2015] [Indexed: 06/05/2023]
Abstract
Using Tetrahymena thermophila as experimental models, the oxidative stress of triazole fungicides myclobutanil (MYC) and cyproconazole (CYP) was investigated. Results showed that 24-h EC50 values for MYC and CYP were 16.67 (13.37-19.65) and 20.44 (18.85-21.96) mg/L, respectively; 48-h EC50 values for MYC and CYP were 14.31 (13.13-15.42) and 18.76 (17.09-20.31) mg/L, respectively. Reactive oxygen species was significantly induced and cytotoxicity was caused by MYC and CYP by increasing propidium iodide (PI) fluorescence. Damage of regular wrinkles and appearing of small holes on the cell surface were observed by SEM. Furthermore, MYC and CYP also caused notable changes in enzyme activities and mRNA levels. Overall, the present study points out that MYC and CYP lead to oxidative stress on T. thermophila. The information presented in this study will provide insights into the mechanism of triazoles-induced oxidative stress on T. thermophila.
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Affiliation(s)
- Ai-Guo Huang
- College of Animal Science and Technology, Northwest A&F University, Xinong Road 22nd, Yangling 712100, Shaanxi, China
| | - Xiao Tu
- College of Animal Science and Technology, Northwest A&F University, Xinong Road 22nd, Yangling 712100, Shaanxi, China
| | - Lei Liu
- College of Animal Science and Technology, Northwest A&F University, Xinong Road 22nd, Yangling 712100, Shaanxi, China
| | - Gao-Xue Wang
- College of Animal Science and Technology, Northwest A&F University, Xinong Road 22nd, Yangling 712100, Shaanxi, China.
| | - Fei Ling
- College of Animal Science and Technology, Northwest A&F University, Xinong Road 22nd, Yangling 712100, Shaanxi, China.
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26
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Tian M, Zhang Q, Shi H, Gao B, Hua X, Wang M. Simultaneous determination of chiral pesticide flufiprole enantiomers in vegetables, fruits, and soil by high-performance liquid chromatography. Anal Bioanal Chem 2015; 407:3499-507. [DOI: 10.1007/s00216-015-8543-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/20/2015] [Accepted: 02/07/2015] [Indexed: 11/28/2022]
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27
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Wang X, Qi P, Zhang H, Xu H, Wang X, Li Z, Wang Z, Wang Q. Enantioselective analysis and dissipation of triazole fungicide penconazole in vegetables by liquid chromatography-tandem mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11047-11053. [PMID: 25349889 DOI: 10.1021/jf5034653] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Penconazole is a typical triazole fungicide, which is commonly used to control powdery mildew in vineyard and vegetable field. In this study, the enantioselective dissipation of penconazole in cucumber, tomato, head cabbage, and pakchoi was investigated by field experiments. A sensitive method for enantiomeric analysis of penconazole was established on the basis of the buffered QuEChERS sample preparation technique followed by reverse-liquid chromatography equipped with a TSQ Discovery triple quadrupole mass spectrometer and a Lux Cellulose-2 chiral column. Methanol and 2 mM ammonium acetate buffer solution containing 0.1% formic acid (70:30, v/v) were used as mobile phase at a 0.2 mL L(-1) flow rate isocratic elution. The linearity, recovery, and precision of this method were also evaluated. Finally, the results of this study demonstrated that enantioselective dissipation occurred in head cabbage and pakchoi, with the preferential degradation of (-)-penconazole, and resulting in an enrichment of the (+)-penconazole residue in the two vegetables. However, the enantioselective behavior was not observed in cucumber and tomato. More importantly, this is the first report of enantioselective behavior of penconazole, and the result may provide useful information for the risk evaluation of penconazole in food and environmental safety.
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Affiliation(s)
- Xinquan Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, MOA Key Lab for Pesticide Residue Detection, Zhejiang Province Key Laboratory of Detection for Pesticide Residues and Control, Institute of Quality and Standard on Agricultural Products, Zhejiang Academy of Agricultural Sciences , Hangzhou 310021, People's Republic of China
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28
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Chen Z, Dong F, Xu J, Liu X, Cheng Y, Liu N, Tao Y, Pan X, Zheng Y. Stereoselective separation and pharmacokinetic dissipation of the chiral neonicotinoid sulfoxaflor in soil by ultraperformance convergence chromatography/tandem mass spectrometry. Anal Bioanal Chem 2014; 406:6677-90. [DOI: 10.1007/s00216-014-8089-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/31/2014] [Accepted: 07/31/2014] [Indexed: 10/24/2022]
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29
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Du T, Cheng J, Wu M, Wang X, Zhou H, Cheng M. An in situ immobilized pipette tip solid phase microextraction method based on molecularly imprinted polymer monolith for the selective determination of difenoconazole in tap water and grape juice. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 951-952:104-9. [DOI: 10.1016/j.jchromb.2014.01.030] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 12/27/2013] [Accepted: 01/22/2014] [Indexed: 11/25/2022]
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30
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Chai T, Jia Q, Yang S, Qiu J. Simultaneous stereoselective detection of chiral fungicides in soil by LC-MS/MS with fast sample preparation. J Sep Sci 2014; 37:595-601. [DOI: 10.1002/jssc.201301193] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/07/2013] [Accepted: 12/09/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Tingting Chai
- Institute of Quality Standards & Testing Technology for Agro-Products; Key Laboratory of Agro-Product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing China
- Key Laboratory of Agri-food Quality and Safety; Ministry of Agriculture; Beijing China
- College of Science; China Agricultural University; Beijing China
| | - Qi Jia
- Institute of Quality Standards & Testing Technology for Agro-Products; Key Laboratory of Agro-Product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing China
- Key Laboratory of Agri-food Quality and Safety; Ministry of Agriculture; Beijing China
| | - Shuming Yang
- Institute of Quality Standards & Testing Technology for Agro-Products; Key Laboratory of Agro-Product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing China
- Key Laboratory of Agri-food Quality and Safety; Ministry of Agriculture; Beijing China
| | - Jing Qiu
- Institute of Quality Standards & Testing Technology for Agro-Products; Key Laboratory of Agro-Product Quality and Safety; Chinese Academy of Agricultural Sciences; Beijing China
- Key Laboratory of Agri-food Quality and Safety; Ministry of Agriculture; Beijing China
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31
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Chen Z, Dong F, Xu J, Liu X, Cheng Y, Liu N, Tao Y, Zheng Y. Stereoselective Determination of a Novel Chiral Insecticide, Sulfoxaflor, in Brown Rice, Cucumber and Apple by Normal-Phase High-Performance Liquid Chromatography. Chirality 2014; 26:114-20. [DOI: 10.1002/chir.22278] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 11/13/2013] [Accepted: 11/16/2013] [Indexed: 01/20/2023]
Affiliation(s)
- Zenglong 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
| | - 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
| | - 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
| | - 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
| | - Youpu Cheng
- 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
| | - Na 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
| | - Yan Tao
- 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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32
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33
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Dong F, Li J, Chankvetadze B, Cheng Y, Xu J, Liu X, Li Y, Chen X, Bertucci C, Tedesco D, Zanasi R, Zheng Y. Chiral triazole fungicide difenoconazole: absolute stereochemistry, stereoselective bioactivity, aquatic toxicity, and environmental behavior in vegetables and soil. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:3386-3394. [PMID: 23451708 DOI: 10.1021/es304982m] [Citation(s) in RCA: 188] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this study, the systemic assessments of the stereoisomers of triazole fungicide difenoconazole are reported for the first time, including absolute stereochemistry, stereoselective bioactivity toward pathogens (Alternaria sonali, Fulvia fulva, Botrytis cinerea, and Rhizoctonia solani), and toxicity toward aquatic organisms (Scenedesmus obliquus, Daphnia magna, and Danio rerio). Moreover, the stereoselective degradation of difenoconazole in vegetables (cucumber, Cucumis sativus and tomato, Lycopersicon esculentum) under field conditions and in soil under laboratory-controlled conditions (aerobic and anaerobic) was investigated. There were 1.33-24.2-fold and 1.04-6.78-fold differences in bioactivity and toxicity, respectively. Investigations on the stereoselective degradation of difenoconazole in vegetables showed that the highest-toxic and lowest-bioactive (2S,4S)-stereoisomer displays a different enrichment behavior in different plant species. Under aerobic or anaerobic conditions, (2R,4R)- and (2R,4S)-difenoconazole were preferentially degraded in the soil. Moreover, difenoconazole was configurationally stable in the test soil matrices. On the basis of biological activity, ecotoxicity, and environmental behavior, it is likely that the use of pure (2R,4S)-difenoconazole instead of the commercial stereoisomer mix may help to increase the bioactivity and reduce environmental pollution.
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Affiliation(s)
- Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
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Assessment of silicone as support to investigate the transformation routes of organic chemicals under environmental conditions and UV exposure. Application to selected fungicides. Anal Bioanal Chem 2013; 405:4187-98. [DOI: 10.1007/s00216-013-6821-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 01/29/2013] [Accepted: 02/04/2013] [Indexed: 10/27/2022]
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35
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Enantioseparation of Chiral Antimycotic Drugs by HPLC with Polysaccharide-Based Chiral Columns and Polar Organic Mobile Phases with Emphasis on Enantiomer Elution Order. Chromatographia 2013. [DOI: 10.1007/s10337-013-2396-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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