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Chiral separation of new chiral insecticide pyraquinil isomers and establishment of analytical methods in vegetables. Se Pu 2022; 40:634-643. [PMID: 35791602 PMCID: PMC9404015 DOI: 10.3724/sp.j.1123.2022.01011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
以全新手性杀虫剂唑虫酯为研究对象,通过筛选手性色谱柱和优化流动相比例,建立了唑虫酯及其氧化代谢物异构体的拆分方法,在此基础上开发利用高效液相色谱-串联质谱(HPLC-MS/MS)同时测定小白菜和蕹菜中唑虫酯及其氧化产物手性异构体的分析方法。以纤维素-三(3,5-二氯苯基氨基甲酸酯)共价键合手性柱(Chiral INC)(250 mm×4.6 mm, 5 μm)为分析柱,乙腈和2 mmol/L甲酸铵水溶液作为流动相进行梯度洗脱分离,在多反应监测负离子模式下进行检测,唑虫酯4个异构体分离度分别为1.63、2.83和1.74,唑虫酯氧化产物异构体分离度为5.82。通过衍生化的方法进一步确定出峰顺序为RS-唑虫酯、SS-唑虫酯、RR-唑虫酯、SR-唑虫酯、S-唑虫酯氧化产物和R-唑虫酯氧化产物。唑虫酯和其氧化产物的手性异构体分别在1.25~1250 μg/L和2.5~2500 μg/L范围内具有良好的线性关系,相关系数(R2)大于0.99。在蕹菜和小白菜样品中同时添加唑虫酯和唑虫酯氧化产物消旋体进行添加回收试验,添加水平为1、20、400 μg/kg(即唑虫酯异构体为0.25、5、100 μg/kg;唑虫酯氧化代谢产物异构体为0.5、10、200 μg/kg),回收率为72.6%~110.6%,相对标准偏差(RSD)均在9.4%以下,其中日内重复性的RSD在0.5%~9.4%之间;日间重复性的RSD在1.0%~8.6%之间,表明该方法具有良好的回收率和精密度。该研究可为唑虫酯这一新型手性农药的环境行为研究及后续质量控制、药效评价等提供相应的分析技术,为新农药开发应用提供有力的技术支撑。
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Zhu Y, Wang L, Guo G, Tang J, Yu J. Development of a novel HPLC-ESI-MS/MS method to analyze the stereoselective pharmacokinetics and tissue distribution of isoconazole enantiomers in rats. Chirality 2022; 34:901-912. [PMID: 35322467 DOI: 10.1002/chir.23442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/09/2022] [Accepted: 03/14/2022] [Indexed: 01/14/2023]
Abstract
Isoconazole with an asymmetrical carbon is a broad-spectrum antimicrobial imidazole, but there is still lack of relevant report about the potential enantioselectivity in biological samples. The object of this research was to develop and validate a sensitive and effective high performance liquid chromatography-electrospray ionization coupled with tandem mass spectrometry (HPLC-ESI-MS/MS) method for stereoselective separation and determination of isoconazole enantiomers in Sprague-Dawley (SD) rat plasma and tissues. The greater enantioseparation of isoconazole enantiomers was obtained on a Chiralpak IC column with a mobile phase consisted of acetonitrile-10 mM aqueous ammonium acetate (90:10, v/v) under the reversed-phase mode. Subsequently, the studied compounds and internal standard (IS) were detected on a multiple reaction monitoring (MRM) mode with positive electrospray ionization source. The experimental and theoretical Electronic Circular Dichroism (ECD) spectra were employed to confirm the absolute configuration of isoconazole enantiomers. Eventually, after full method validation, the newly developed method was successfully applied to the study of enantioselectivity in plasma and tissues in SD rats. Results illustrated that the enantioselective differences in plasma were observed for the evidence that the concentrations of S-(-)-isoconazole were always higher than R-(+)-isomer. In terms of tissue distribution, liver, kidney, lung, spleen, and small intestine were the mainly distributed tissues and then followed by heart and muscle. This is the first study to reveal the stereoselective behavior of isoconazole enantiomers in vivo, which also provides reliable and valuable reference for further elucidating the enantioselective metabolisms of isoconazole enantiomers.
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Affiliation(s)
- Yuanyuan Zhu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Lina Wang
- Department of Animal Products and Fishery products, Liaoning Institute for Agro-Product Veterinary Drugs and Feed Control, Liaoning Inspection, Examination and Certification Center, Shenyang, China
| | - Guoxian Guo
- Department of Animal Products and Fishery products, Liaoning Institute for Agro-Product Veterinary Drugs and Feed Control, Liaoning Inspection, Examination and Certification Center, Shenyang, China
| | - Jing Tang
- Department of Pharmacy, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Jia Yu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
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Hao W, Zhang Y, Xu P, Xie Y, Li W, Wang H. Enantioselective accumulation, elimination and metabolism of fenbuconazole in lizards (Eremias argus). CHEMOSPHERE 2021; 271:129482. [PMID: 33460889 DOI: 10.1016/j.chemosphere.2020.129482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/24/2020] [Accepted: 12/27/2020] [Indexed: 06/12/2023]
Abstract
The enantioselective accumulation, elimination and metabolism of fenbuconazole in lizards were determined following a single-dose (25 mg/kgbw) exposure to racemic or enantiomeric fenbuconazole. Accumulation of fenbuconazole was found in lizard fat with rac-form > enantiopure enantiomers. The enantiomer fractions (EFs) were higher than 0.5 in the blood, while EFs were less than 0.5 in the liver, brain, skin and stomach. There was conversion from (+)-fenbuconazole to (-)-fenbuconazole in lizard liver and conversion from (-)-fenbuconazole to (+)-fenbuconazole in lizard liver and blood. The results showed that enantioselective accumulation appeared in lizards, but the direction varied among blood and different tissues. The elimination half-lives (t1/2) of (+)-fenbuconazole were higher than those of (-)-fenbuconazole in the blood and liver, suggesting that (-)-fenbuconazole eliminated faster than (+)-fenbuconazole in these tissues. In addition, both (+)-fenbuconazole and (-)-fenbuconazole eliminated faster in the liver and stomach exposed to racemate than those exposed to enantiopure enantiomers. On the contrary, the form of racemate decreased the elimination rate of fenbuconazole in lizard fat. Synergistic elimination may occur when two enantiomers coexisted in lizard liver and stomach, while the racemate produced antagonistic elimination in lizard fat. Simultaneously, three metabolites, RH-6467, RH-9029&RH-9030 and keto-mchlorophenol, were discovered in lizard liver. Only two metabolites, RH-6467 and RH-9029&RH-9030, were found in lizard blood. RH-9029&RH-9030 were the major metabolites. The discovered enantiomers of (+)-fenbuconazole metabolites were different from those of (-)-fenbuconazole. The findings of this study may provide a better understanding of the enantioselective behaviors of chiral triazole fungicides in reptiles.
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Affiliation(s)
- Weiyu Hao
- Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Shuangqing RD 18, Beijing, 100085, China.
| | - Yanfeng Zhang
- Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Shuangqing RD 18, Beijing, 100085, China.
| | - Peng Xu
- Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Shuangqing RD 18, Beijing, 100085, China.
| | - Yun Xie
- Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Shuangqing RD 18, Beijing, 100085, China; University of the Chinese Academy of Sciences, Yuquan RD 19 a, Beijing, 100049, China.
| | - Wei Li
- Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Shuangqing RD 18, Beijing, 100085, China.
| | - Huili Wang
- Research Center for Eco-Environmental Science, Chinese Academy of Sciences, Shuangqing RD 18, Beijing, 100085, China.
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Liu Y, Zhu B, Xue M, Jiang Z, Guo X. Studies on the chiral separation of pheniramine and its enantioselective pharmacokinetics in rat plasma by HPLC-MS/MS. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104989] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Lun J, Zhao P, Jiang Z, Song Y, Guo X. Enantioselective LC-MS/MS method for the determination of cloperastine enantiomers in rat plasma and its pharmacokinetic application. Chirality 2020; 32:1129-1138. [PMID: 32567749 DOI: 10.1002/chir.23257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/28/2020] [Accepted: 06/02/2020] [Indexed: 12/18/2022]
Abstract
Cloperastine is a central antitussive used to reduce the frequency and intensity of coughing on a short-term basis. In this study, a reliable chiral LC-MS/MS technology has been developed for the quantification of cloperastine enantiomers in the rat plasma. Carbinoxamine was selected as the internal standard. The enantioseparation of cloperastine was performed on a Chiralpak IA column with a mobile phase composed of acetonitrile-water-ammonium hydroxide (80:20:0.1, v/v/v) at a flow rate of 0.6 mL/min. Cloperastine enantiomers were detected by mass spectrometry in multiple reaction monitoring mode with a positive electrospray ionization source. The method was validated over the linear concentration range of 0.05 to 10.0 ng/mL (5.0 × 10-4 ng to 0.10 ng) for both enantiomers. The lower limit of quantification (LLOQ) for each analyte was determined as 0.05 ng/mL. The relative standard deviations (RSDs) of intraday and interday precision was less than 13.9%, and the relative error (RE) of accuracy ranged from -5.4% to 6.1%, which were within the acceptance criteria. Finally, an application to the stereoselective pharmacokinetics of cloperastine in rats was successfully realized in our assay. The developed method on a commercially available Chiralpak IA column under isocratic mobile phase is advantageous to analyze cloperastine enantiomers in plasma samples collected for enantioselective metabolism or drug interaction studies.
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Affiliation(s)
- Jia Lun
- Department School of Pharmacy, Institution Shenyang Pharmaceutical University, Shenyang, China
| | - Pengfei Zhao
- Department School of Pharmacy, Institution Shenyang Pharmaceutical University, Shenyang, China
| | - Zhen Jiang
- Department School of Pharmacy, Institution Shenyang Pharmaceutical University, Shenyang, China
| | - Yongbo Song
- Department School of Life Science and Biopharmaceutics, Institution Shenyang Pharmaceutical University, Shenyang, China
| | - Xingjie Guo
- Department School of Pharmacy, Institution Shenyang Pharmaceutical University, Shenyang, China
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Liu Y, Cai L, Lun J, Zhao M, Guo X. Enantiomeric separation and molecular docking study of seven imidazole antifungal drugs on a cellulose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase. NEW J CHEM 2020. [DOI: 10.1039/d0nj03657a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Chiral separation and molecular docking study of seven imidazole antifungal drugs were performed on a cellulose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase (Chiralcel OD-RH).
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Affiliation(s)
- Yanru Liu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Liangzhao Cai
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Jia Lun
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Min Zhao
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Xingjie Guo
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
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Li L, Wang H, Shuang Y, Li L. The preparation of a new 3,5-dichlorophenylcarbamated cellulose-bonded stationary phase and its application for the enantioseparation and determination of chiral fungicides by LC-MS/MS. Talanta 2019; 202:494-506. [DOI: 10.1016/j.talanta.2019.05.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/20/2019] [Accepted: 05/02/2019] [Indexed: 11/15/2022]
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Preparation of a new benzylureido-β-cyclodextrin-based column and its application for the determination of phenylmercapturic acid and benzylmercapturic acid enantiomers in human urine by LC/MS/MS. Anal Bioanal Chem 2019; 411:5465-5479. [PMID: 31177331 DOI: 10.1007/s00216-019-01920-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 04/19/2019] [Accepted: 05/14/2019] [Indexed: 10/26/2022]
Abstract
A benzylureido-β-cyclodextrin was synthesized by the reaction of 6-amino-β-cyclodextrin with an active benzyl isocyanate. Then, it was bonded to silica gel by a thiol-ene addition reaction, obtaining a new benzylureido-β-cyclodextrin-based chiral stationary phase (BzCDP). Its chemical structure was characterized by infrared spectroscopy, elemental analysis, and solid-state nuclear magnetic resonance spectroscopy. The BzCDP was successfully used to separate phenylmercapturic acid (PMA) and benzylmercapturic acid (BMA) enantiomers, which were confirmed as biomarkers of exposure to benzene and toluene in human urine. The enantiomeric separations were also optimized through the investigation of related factors. The resolutions of PMA and BMA enantiomers could be up to 2.25 and 2.14, respectively, within 30 min under reversed-phase chromatography. Based on the optimal chromatographic and mass spectrometry conditions, a new LC-MS/MS quantitative method for the PMA and BMA enantiomers was established by negative ion multiple reaction monitoring (MRM) and an isotope-labeled PMA (d2-PMA) as an internal standard. The limits of detection (LODs) of enantiomers were less than 0.17 μg/L for PMA and 0.14 μg/L for BMA, and the averaged recoveries of enantiomers were in the range of 86~100% for PMA and 86~113% for BMA. The method had good reproducibility levels with the RSDs (3.5~11.3% for intra-day and 3.9~13.1% for inter-day). The method was successfully applied to urine testing of 60 painting and printing workers. The results showed that only L-PMA was detected in the urine of the Printers, while a high content of L-PMA (27.5~106 μg/L) and D-PMA (19.9~82.8 μg/L) can be detected simultaneously in the urine of the Painters, indicating that benzene pollution was more serious in this group. The positive rate of BMA was rather higher, indicating that toluene pollution was more common than benzene. BMA also existed in the form of two enantiomers (L-BMA and D-BMA), but the difference between the two types of occupational groups was small. It is a meaningful work to deeply study the existence and content of chiral markers in human urine, which will help to better understand and evaluate the harmful effects of benzene series on human beings. Graphical abstract.
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Zhao P, Wang Z, Li K, Guo X, Zhao L. Multi-residue enantiomeric analysis of 18 chiral pesticides in water, soil and river sediment using magnetic solid-phase extraction based on amino modified multiwalled carbon nanotubes and chiral liquid chromatography coupled with tandem mass spectrometry. J Chromatogr A 2018; 1568:8-21. [PMID: 30007792 DOI: 10.1016/j.chroma.2018.07.022] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/15/2018] [Accepted: 07/04/2018] [Indexed: 02/06/2023]
Abstract
This manuscript describes, for the first time, the multi-residue analysis of 18 chiral pesticides at enantiomeric levels in both environmental liquid (river water, influent and effluent wastewater) and solid matrices (agricultural soil, forestal soil and river sediment) based on magnetic solid-phase extraction (MSPE) and chiral liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). Magnetic amino modified multiwalled carbon nanotubes (m-MWCNTs-NH2) were prepared and firstly applied to adsorb pesticides from complex matrices. Response surface methodology (RSM) was applied to assist the multivariable optimization. The simultaneous enantioseparation of the chiral pesticides was performed on a Chiralpak IG column. Under the optimum conditions, the mean recoveries for pesticides enantiomers from the water matrices ranged from 81.1 to 106.3% with intra-day RSD of 2.1-11.9% and inter-day RSD of 2.6-12.7%; the mean recoveries for all enantiomers from the solid matrices ranged from 80.3 to 105.9% with intra-day RSD of 2.3-10.9% and inter-day RSD of 4.0-13.4%. Good linearity was achieved for all enantiomers with determination coefficients (r2) greater than 0.9912. Method quantification limits were below 2.04ng L-1 in liquid matrices and below 0.50ng g-1 in solid matrices. The developed method offered some advantages, such as simple operation, rapidity and high concentration factor. Therefore, it is suitable for monitoring the enantiomeric compositions of chiral pesticides in different environmental matrices.
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Affiliation(s)
- Pengfei Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, PR China
| | - Zhaokun Wang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, PR China
| | - Kunjie Li
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, PR China
| | - Xingjie Guo
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, PR China.
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, PR China.
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Zhong JJ, Liao N, He M, Pu Y, Liu D. Development of an analytical method for urocanic acid isomers in fish based on reactive extraction cleanup and chaotropic chromatography techniques. J Chromatogr A 2018; 1548:44-50. [DOI: 10.1016/j.chroma.2018.03.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/25/2018] [Accepted: 03/13/2018] [Indexed: 10/17/2022]
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Supercritical fluid chromatography–tandem mass spectrometry-assisted methodology for rapid enantiomeric analysis of fenbuconazole and its chiral metabolites in fruits, vegetables, cereals, and soil. Food Chem 2018; 241:32-39. [DOI: 10.1016/j.foodchem.2017.08.038] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 06/22/2017] [Accepted: 08/12/2017] [Indexed: 11/23/2022]
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Qi P, Yuan Y, Wang Z, Wang X, Xu H, Zhang H, Wang Q, Wang X. Use of liquid chromatography- quadrupole time-of-flight mass spectrometry for enantioselective separation and determination of pyrisoxazole in vegetables, strawberry and soil. J Chromatogr A 2016; 1449:62-70. [DOI: 10.1016/j.chroma.2016.04.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 04/15/2016] [Accepted: 04/18/2016] [Indexed: 11/27/2022]
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Tian F, Liu X, Xu J, Dong F, Zheng Y, Hu M, Wu Y. Simultaneous Determination of Phoxim, Chlorpyrifos, and Pyridaben Residues in Edible Mushrooms by High-Performance Liquid Chromatography Coupled to Tandem Mass Spectrometry. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0490-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Simultaneous enantioselective determination of phenylpyrazole insecticide flufiprole and its chiral metabolite in paddy field ecosystem by ultra-high performance liquid chromatography/tandem mass spectrometry. J Pharm Biomed Anal 2016; 121:261-270. [PMID: 26809615 DOI: 10.1016/j.jpba.2016.01.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 01/12/2016] [Accepted: 01/14/2016] [Indexed: 01/15/2023]
Abstract
A novel and sensitive ultra-high performance liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) method was developed and validated for simultaneous enantioselective determination of flufiprole and its hydrolysis metabolite in paddy field ecosystem. The separation and determination were performed using reversed-phase chromatography on a novel cellulose chiral stationary phase, a Lux Cellulose-4 (150 mm × 2.0 mm) column, under isocratic conditions at 0.25 mL/min flow rate. The effects of other four different polysaccharide-based chiral stationary phases (CSPs) on the separation and simultaneous enantioseparation of the two target compounds were also evaluated. The elution orders of the eluting enantiomers were identified by an optical rotation detector. Modified QuEChERS (acronym for Quick, Easy, Cheap, Effective, Rugged and Safe) method and solid-phase extraction (SPE) were used for the enrichment and cleanup of paddy water, rice straw, brown rice and paddy soil samples, respectively. Parameters including the matrix effect, linearity, precision, accuracy and stability were evaluated. Under the optimal conditions, the mean recoveries for all enantiomers from the above four sample matrix were ranged from 83.6% to 107%, with relative standard deviations (RSD) in the range of 1.0-5.8%. Coefficients of determination R(2)≥0.998 were achieved for each enantiomer in paddy water, rice straw, brown rice and paddy soil matrix calibration curves within the range of 5-500 μg/kg. The limits of quantification (LOQ) for all stereoisomers in the above four matrices were all below 2.0 μg/kg. The methodology was successfully applied for simultaneously enantioselective analysis of flufiprole enantiomers and their chiral metabolite in the real samples, indicating its efficacy in investigating the environmental stereochemistry of flufiprole in paddy field ecosystem.
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Zhang Q, Gao B, Tian M, Shi H, Hua X, Wang M. Enantioseparation and determination of triticonazole enantiomers in fruits, vegetables, and soil using efficient extraction and clean-up methods. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1009-1010:130-7. [DOI: 10.1016/j.jchromb.2015.12.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 12/09/2015] [Accepted: 12/10/2015] [Indexed: 10/22/2022]
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Lassalle Y, Nicol E, Genty C, Bourcier S, Bouchonnet S. Isomerization of fenbuconazole under UV-visible irradiation - chemical and toxicological approaches. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:1335-1342. [PMID: 26405795 DOI: 10.1002/rcm.7227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 05/06/2015] [Accepted: 05/12/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE Fenbuconazole is a fungicide commonly used for the protection of vineyards, vegetables and grain crops. Under UV-visible irradiation, it undergoes isomerization through various cyclization processes. Isomeric structures were elucidated by liquid chromatography/high-resolution multiple-stage mass spectrometry (LC/HR-MS(n) ) coupling. The potential toxicities of these isomers were estimated by in silico tests. METHODS Aqueous solutions of fenbuconazole and grapes treated with this fungicide were irradiated in a self-made reactor equipped with a mercury vapor lamp. Analyses were carried out using high-performance liquid chromatography (HPLC) coupled with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICRMS). High-resolution m/z measurements, multiple-stage mass spectrometry and isotopic labeling experiments allowed structural elucidation of the isomers of fenbuconazole. In silico toxicity estimations were carried out using the T.E.S.T. RESULTS Seven isomers of fenbuconazole were detected after irradiation of the fungicide in aqueous solution; the major ones were also detected in the flesh of treated grapes irradiated under laboratory conditions. Elucidation of their chemical structures owing to high resolution measurements and multi-stage collision induced dissociation experiments allowed confirmation of photo-transformation pathways mainly dominated by cyclization processes. Photo-induced isomers exhibited higher potential toxicities than fenbuconazole for Daphnia magna and fathead minnow species. CONCLUSIONS UV-visible irradiation of fenbuconazole in aqueous solution and on grapes leads to the formation of isomers, all of which being potentially much more toxic than the parent fungicide.
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Affiliation(s)
- Yannick Lassalle
- Laboratoire de Chimie Moléculaire UMR-9168, École Polytechnique, 91128, Palaiseau Cedex, France
| | - Edith Nicol
- Laboratoire de Chimie Moléculaire UMR-9168, École Polytechnique, 91128, Palaiseau Cedex, France
| | - Christophe Genty
- Laboratoire de Chimie Moléculaire UMR-9168, École Polytechnique, 91128, Palaiseau Cedex, France
| | - Sophie Bourcier
- Laboratoire de Chimie Moléculaire UMR-9168, École Polytechnique, 91128, Palaiseau Cedex, France
| | - Stéphane Bouchonnet
- Laboratoire de Chimie Moléculaire UMR-9168, École Polytechnique, 91128, Palaiseau Cedex, France
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Ribeiro C, Ribeiro AR, Maia AS, Gonçalves VMF, Tiritan ME. New trends in sample preparation techniques for environmental analysis. Crit Rev Anal Chem 2015; 44:142-85. [PMID: 25391434 DOI: 10.1080/10408347.2013.833850] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Environmental samples include a wide variety of complex matrices, with low concentrations of analytes and presence of several interferences. Sample preparation is a critical step and the main source of uncertainties in the analysis of environmental samples, and it is usually laborious, high cost, time consuming, and polluting. In this context, there is increasing interest in developing faster, cost-effective, and environmentally friendly sample preparation techniques. Recently, new methods have been developed and optimized in order to miniaturize extraction steps, to reduce solvent consumption or become solventless, and to automate systems. This review attempts to present an overview of the fundamentals, procedure, and application of the most recently developed sample preparation techniques for the extraction, cleanup, and concentration of organic pollutants from environmental samples. These techniques include: solid phase microextraction, on-line solid phase extraction, microextraction by packed sorbent, dispersive liquid-liquid microextraction, and QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe).
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Affiliation(s)
- Cláudia Ribeiro
- a CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde , Gandra , Portugal
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Zhao H, Xu J, Dong F, Liu X, Wu Y, Wu X, Zheng Y. Simultaneous determination of three herbicides in wheat, wheat straw, and soil using a quick, easy, cheap, effective, rugged, and safe method with ultra high performance liquid chromatography and tandem mass spectrometry. J Sep Sci 2015; 38:1164-71. [DOI: 10.1002/jssc.201401234] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/04/2015] [Accepted: 01/13/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Huanhuan Zhao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
- Henan Institute of Science and Technology; Xinxiang China
| | - Jun Xu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Xingang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Yanbing Wu
- Henan Institute of Science and Technology; Xinxiang China
| | - Xiaohu Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
| | - Yongquan Zheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing China
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Pan X, Dong F, Xu J, Liu X, Cheng Y, Chen Z, Liu N, Chen X, Tao Y, Zheng Y. Comparison of different cleanup procedures for oil crops based on the development of a trace analytical method for the determination of pyraclostrobin and epoxiconazole. J Sep Sci 2014; 37:3669-76. [DOI: 10.1002/jssc.201400596] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 09/22/2014] [Accepted: 09/28/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Xinglu Pan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing 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 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 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 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 P.R. China
| | - Zenglong Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing 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 P.R. China
| | - Xixi Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection; Chinese Academy of Agricultural Sciences; Beijing 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 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 P.R. China
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Arias JLDO, Rombaldi C, Caldas SS, Primel EG. Alternative sorbents for the dispersive solid-phase extraction step in quick, easy, cheap, effective, rugged and safe method for extraction of pesticides from rice paddy soils with determination by liquid chromatography tandem mass spectrometry. J Chromatogr A 2014; 1360:66-75. [DOI: 10.1016/j.chroma.2014.07.082] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 05/22/2014] [Accepted: 07/20/2014] [Indexed: 10/25/2022]
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Chen X, Xu J, Liu X, Tao Y, Pan X, Zheng Y, Dong F. Simultaneous determination of trifloxystrobin and trifloxystrobin acid residue in rice and soil by a modified quick, easy, cheap, effective, rugged, and safe method using ultra high performance liquid chromatography with tandem mass spectrometry. J Sep Sci 2014; 37:1640-7. [DOI: 10.1002/jssc.201400157] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 03/12/2014] [Accepted: 04/07/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Xixi Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing 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 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 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 P.R. China
| | - Xinglu Pan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests; Institute of Plant Protection, Chinese Academy of Agricultural Sciences; Beijing 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 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 P.R. China
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Rapid Enantioseparation and Determination of Isocarbophos Enantiomers in Orange Pulp, Peel, and Kumquat by Chiral HPLC-MS/MS. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-9922-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Bruzzoniti MC, Checchini L, De Carlo RM, Orlandini S, Rivoira L, Del Bubba M. QuEChERS sample preparation for the determination of pesticides and other organic residues in environmental matrices: a critical review. Anal Bioanal Chem 2014; 406:4089-116. [PMID: 24770804 DOI: 10.1007/s00216-014-7798-4] [Citation(s) in RCA: 179] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 03/22/2014] [Accepted: 03/26/2014] [Indexed: 11/29/2022]
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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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Masiá A, Campo J, Vázquez-Roig P, Blasco C, Picó Y. Screening of currently used pesticides in water, sediments and biota of the Guadalquivir River Basin (Spain). JOURNAL OF HAZARDOUS MATERIALS 2013; 263 Pt 1:95-104. [PMID: 24140087 DOI: 10.1016/j.jhazmat.2013.09.035] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 09/11/2013] [Accepted: 09/17/2013] [Indexed: 05/06/2023]
Abstract
The occurrence of 50 currently used pesticides and their transformation products in surface and waste waters, sediment and fish in the Guadalquivir River Basin was determined in 2010 and 2011. After selective sample extraction, pesticides were identified and quantified by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The contamination profile in water and sediments is marked by the presence of organophosphorus and triazines. Transformation products were even at higher concentrations than parent pesticides. A wider range of pesticides was present in water than in sediments but none of them were detected in fish. The mean concentrations ranged from 0.2 to 13.0 ng/L in water and from 0.1 to 13.2 ng/g d.w. in sediment. The spatial distribution of most pesticides was consistent with the agricultural activities of the area or their urban applications. The waste water treatment plant effluents that impact the river are minor sources for few pesticides but for most of them run-off would be the most important contribution. The temporal distribution showed differences between both sampling campaigns related to the river flow. The low-flow produced a pesticide concentration effect, generating higher levels in water and accumulation in sediments. This forecasts a hazard in future scenarios if the current situation of the climate change and water scarcity evolves to more critical conditions highlighting the need of these monitoring studies.
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Affiliation(s)
- Ana Masiá
- Food and Environmental Safety Research Group, Department of Medicine Preventive, Faculty of Pharmacy, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain.
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Zhang M, Zhou Q, Li A, Shuang C, Wang W, Wang M. A magnetic sorbent for the efficient and rapid extraction of organic micropollutants from large-volume environmental water samples. J Chromatogr A 2013; 1316:44-52. [DOI: 10.1016/j.chroma.2013.09.086] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 09/26/2013] [Accepted: 09/27/2013] [Indexed: 11/27/2022]
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27
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Enantioseparation and Determination of the Chiral Fungicide Furametpyr Enantiomers in Rice, Soil, and Water by High-Performance Liquid Chromatography. Chirality 2013; 25:904-9. [DOI: 10.1002/chir.22232] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 07/19/2013] [Indexed: 01/14/2023]
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28
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Li M, Liu X, Dong F, Xu J, Kong Z, Li Y, Zheng Y. Simultaneous determination of cyflumetofen and its main metabolite residues in samples of plant and animal origin using multi-walled carbon nanotubes in dispersive solid-phase extraction and ultrahigh performance liquid chromatography–tandem mass spectrometry. J Chromatogr A 2013; 1300:95-103. [DOI: 10.1016/j.chroma.2013.05.052] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 05/21/2013] [Accepted: 05/22/2013] [Indexed: 10/26/2022]
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29
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Luo M, Liu D, Zhou Z, Wang P. A New Chiral Residue Analysis Method for Triazole Fungicides in Water Using Dispersive Liquid-Liquid Microextraction (DLLME). Chirality 2013; 25:567-74. [DOI: 10.1002/chir.22172] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 01/26/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Mai Luo
- Department of Applied Chemistry; China Agricultural University; Beijing People's Republic of China
| | - Donghui Liu
- Department of Applied Chemistry; China Agricultural University; Beijing People's Republic of China
| | - Zhiqiang Zhou
- Department of Applied Chemistry; China Agricultural University; Beijing People's Republic of China
| | - Peng Wang
- Department of Applied Chemistry; China Agricultural University; Beijing People's Republic of China
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Li Y, Dong F, Liu X, Xu J, Chen X, Han Y, Liang X, Zheng Y. Development of a multi-residue enantiomeric analysis method for 9 pesticides in soil and water by chiral liquid chromatography/tandem mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2013; 250-251:9-18. [PMID: 23434475 DOI: 10.1016/j.jhazmat.2013.01.071] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2012] [Revised: 12/27/2012] [Accepted: 01/26/2013] [Indexed: 06/01/2023]
Abstract
A novel and sensitive chiral liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) method was developed and validated for simultaneous measuring individual enantiomers of 9 pesticides including herbicides, insecticides, and fungicides in soil and water. The separation and determination were performed using reversed-phase chromatography on an amylose chiral stationary phase, a Chiralpak AD-RH column, under gradient elution using a mixture of ACN-2mM ammonium acetate in water as the mobile phase at 0.45 mL/min flow rate. The effects of three cellulose-based columns and three amylose-based columns on the separation were also investigated. The QuEChERS (acronym for Quick, Easy, Cheap, Effective, Rugged and Safe) method and solid-phase extraction (SPE) were used for the extraction and clean-up of the soil and water samples, respectively. Parameters including the matrix effect, linearity, precision, accuracy and stability were undertaken. Under optimal conditions, the mean recoveries for all enantiomers from the soil and water samples were ranged from 77.8% to 106.2% with the relative standard deviations (RSD) less than 14.2%. Good linearity (at least R(2) ≥ 0.9986) was obtained for all studied analytes in the soil and water matrix calibration curves over the range from 2.0 to 125 μg/L. The limits of detection (LOD) for all enantiomers in the soil and water were less than 1.8 μg/kg or μg/L, whereas the limit of quantification (LOQ) did not exceed 5.0 μg/kg or μg/L. The results of the method validation confirm that this proposed method is convenient and reliable for the enantioselective determination of the enantiomers of 9 chiral pesticides in soil and water.
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Affiliation(s)
- Yuanbo Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Beijing, 100193, PR China
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Li Y, Dong F, Liu X, Xu J, Chen X, Han Y, Liang X, Zheng Y. Studies of Enantiomeric Degradation of the Triazole Fungicide Hexaconazole in Tomato, Cucumber, and Field Soil by Chiral Liquid Chromatography-Tandem Mass Spectrometry. Chirality 2013; 25:160-9. [DOI: 10.1002/chir.22121] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Accepted: 09/21/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Yuanbo Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
| | - Fengshou Dong
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
| | - Xingang Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
| | - Jun Xu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
| | - Xiu Chen
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
| | - Yongtao Han
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
| | - Xuyang Liang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
| | - Yongquan Zheng
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Key Laboratory of Integrated Pest Management in Crops; Ministry of Agriculture; Beijing 100193 People's Republic of China
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32
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Simultaneous determination of five pyrazole fungicides in cereals, vegetables and fruits using liquid chromatography/tandem mass spectrometry. J Chromatogr A 2012; 1262:98-106. [DOI: 10.1016/j.chroma.2012.08.100] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 08/29/2012] [Accepted: 08/31/2012] [Indexed: 11/20/2022]
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33
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Zhang H, Wang X, Zhuang S, Jin N, Wang X, Qian M, Xu H, Qi P, Wang Q, Wang M. Enantioselective analysis and degradation studies of isocarbophos in soils by chiral liquid chromatography-tandem mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:10188-10195. [PMID: 23009639 DOI: 10.1021/jf302620s] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
An enantioselective method is presented for the determination of isocarbophos in soil by liquid chromatography coupled with tandem mass spectrometry. The pesticide residues in soil samples were extracted with acetonitrile, and complete enantioseparation was obtained on an amylose tris(3,5-dimethylphenylcarbamate) chiral column using acetonitrile/2 mM ammonium acetate solution containing 0.1% formic acid (60:40, v/v) as the mobile phase. The absolute configuration of isocarbophos enantiomers was determined by the combination of experimental and calculated electronic circular dichroism spectra. The method was utilized to investigate the degradation of isocarbophos in soils (Changchun, Hangzhou, and Zhengzhou) under sterilized or native conditions. Isocarbophos enantiomers were configurationally stable in the selected soils, and the pesticide degradation was not enantioselective in the sterilized condition. The degradation behavior of rac-isocarbophos was different under native conditions, with no enantioselectivity in the Changchun soil and with the S-(+)-isocarbophos enriched in the Hangzhou and Zhengzhou soils.
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Affiliation(s)
- Hu Zhang
- Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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34
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Enantioselective separation and simultaneous determination of fenarimol and nuarimol in fruits, vegetables, and soil by liquid chromatography–tandem mass spectrometry. Anal Bioanal Chem 2012; 404:1983-91. [DOI: 10.1007/s00216-012-6325-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 07/17/2012] [Accepted: 08/02/2012] [Indexed: 10/27/2022]
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35
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Zhang H, Wang X, Jin L, Qian M, Wang X, Xu H, Qi P, Wang Q, Wang M. Enantioselective determination of acylamino acid fungicides in vegetables and fruits by chiral liquid chromatography coupled with tandem mass spectrometry. J Sep Sci 2012; 35:1869-76. [DOI: 10.1002/jssc.201200063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 03/29/2012] [Accepted: 03/30/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Hu Zhang
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences;; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
- Department of Pesticide Science; College of Plant Protection; Nanjing Agricultural University; Jiangsu Key Laboratory of Pesticide Science; Nanjing China
| | - Xinquan Wang
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences;; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
| | - Lixia Jin
- Research Center of Green Chirality; Zhejiang University of Technology; Hangzhou China
| | - Mingrong Qian
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences;; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
| | - Xiangyun Wang
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences;; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
| | - Hao Xu
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences;; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
| | - Peipei Qi
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences;; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
| | - Qiang Wang
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences;; State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control; MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
| | - Minghua Wang
- Department of Pesticide Science; College of Plant Protection; Nanjing Agricultural University; Jiangsu Key Laboratory of Pesticide Science; Nanjing China
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36
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Correia-Sá L, Fernandes VC, Carvalho M, Calhau C, Domingues VF, Delerue-Matos C. Optimization of QuEChERS method for the analysis of organochlorine pesticides in soils with diverse organic matter. J Sep Sci 2012; 35:1521-30. [DOI: 10.1002/jssc.201200087] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Luísa Correia-Sá
- REQUIMTE; Instituto Superior de Engenharia do Porto; Porto Portugal
- FCNAUP; Porto Portugal
| | - Virgínia C. Fernandes
- REQUIMTE; Instituto Superior de Engenharia do Porto; Porto Portugal
- CIQ (Investigation Centre); Porto Portugal
| | - Manuela Carvalho
- REQUIMTE; Instituto Superior de Engenharia do Porto; Porto Portugal
| | - Conceição Calhau
- Department of Biochemistry (U38-FCT); Faculty of Medicine; University of Porto, Porto Portugal
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37
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Xu Y, Zhang H, Zhuang S, Yu M, Xiao H, Qian M. Different enantioselective degradation of pyraclofos in soils. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:4173-4178. [PMID: 22494269 DOI: 10.1021/jf205189v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This study investigated the enantioselective degradation behavior of pyraclofos in three soils (NC, HZ, and ZZ) under native and sterilized conditions. The absolute configuration of pyraclofos enantiomers has been determined by the combination of experimental and calculated electronic circular dichroism spectra. S-(+)- and R-(-)-Pyraclofos were separated and determined on a cellulose tri-(4-chloro-3-methylphenylcarbamate) (Lux Cellulose-4) chiral column by reversed-phase high-performance liquid chromatography-tandem mass spectrometry. Pyraclofos enantiomers were configurationally stable in three soils and no interconversion was observed during the incubation of enantiopure S-(+)- or R-(-)-pyraclofos under native conditions. The enantioselective degradation behavior of chiral pyraclofos was dramatically different in three soils under native conditions, with half-lives (t(1/2)) of pyraclofos in NC, HZ, and ZZ soils of 2.6, 13.4, and 7.8 days for S-(+)-pyraclofos and 9.2, 9.3, and 8.2 days for R-(-)-pyraclofos. Compared to the half-lives (t(1/2)) of rac-pyraclofos of 21.5, 55.9, and 14.4 days in sterilized NC, HZ and ZZ soils, the degradation velocity was greatly improved in native soils, indicating that degradation was greatly attributed to microbially mediated processes in agricultural cultivating soils.
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Affiliation(s)
- Yuxin Xu
- Environmental Resources and Soil Fertilizer Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
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Zhang H, Qian M, Wang X, Wang X, Xu H, Wang Q, Wang M. HPLC-MS/MS enantioseparation of triazole fungicides using polysaccharide-based stationary phases. J Sep Sci 2012; 35:773-81. [DOI: 10.1002/jssc.201100889] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hu Zhang
- Department of Pesticide Science; College of Plant Protection; Nanjing Agricultural University; Nanjing China
- Key Laboratory of Integrated Management of Crop Diseases and Pests; Ministry of Education; Nanjing China
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Hangzhou China
- MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - Mingrong Qian
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Hangzhou China
- MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - Xinquan Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Hangzhou China
- MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - Xiangyun Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Hangzhou China
- MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - Hao Xu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Hangzhou China
- MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - Qiang Wang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control; Hangzhou China
- MOA Key Laboratory for Pesticide Residue Detection; Hangzhou China
- Institute of Quality and Standard for Agro-products; Zhejiang Academy of Agricultural Sciences; Hangzhou China
| | - Minghua Wang
- Department of Pesticide Science; College of Plant Protection; Nanjing Agricultural University; Nanjing China
- Key Laboratory of Integrated Management of Crop Diseases and Pests; Ministry of Education; Nanjing China
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Analysis of Tebuconazole and Tetraconazole Enantiomers by Chiral HPLC-MS/MS and Application to Measure Enantioselective Degradation in Strawberries. FOOD ANAL METHOD 2012. [DOI: 10.1007/s12161-012-9375-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dong F, Cheng L, Liu X, Xu J, Li J, Li Y, Kong Z, Jian Q, Zheng Y. Enantioselective analysis of triazole fungicide myclobutanil in cucumber and soil under different application modes by chiral liquid chromatography/tandem mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:1929-1936. [PMID: 22288843 DOI: 10.1021/jf204762t] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A sensitive and enantioselective method was developed and validated for the determination of myclobutanil enantiomers by chiral liquid chromatography coupled with tandem mass spectrometry. The separation and determination were performed using reversed-phase chromatography on a Chiralcel OD-RH column, with ACN-water (70/30, v/v) as the mobile phase under isocratic conditions at 0.5 mL/min flow rate. The matrix effect, linearity, precision, accuracy, and stability were evaluated. The proposed method then was successfully applied to the study of enantioselective degradation of rac-myclobutanil in cucumber and soil under different application modes. The results showed that the preferential degradation of (+)-myclobutanil resulted in an enrichment of the (-)-myclobutanil residue in plant and soil. Moreover, in cucumber, the stereoselective intensity of myclobutanil under root douche treatment was stronger than that under foliar spraying treatment, whereas in soil, the intensity was exactly opposite. The probable reasons underlying these enantioselective effects were also discussed. This study highlighted the importance of examining the fate of both enantiomers in the greenhouse system for the correct use of chiral pesticides.
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Affiliation(s)
- Fengshou Dong
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences , Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Beijing 100193, China
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Simultaneous enantioselective determination of triazole fungicides in soil and water by chiral liquid chromatography/tandem mass spectrometry. J Chromatogr A 2012; 1224:51-60. [DOI: 10.1016/j.chroma.2011.12.044] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 12/12/2011] [Accepted: 12/12/2011] [Indexed: 11/20/2022]
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Chen X, Dong F, Liu X, Xu J, Li J, Li Y, Wang Y, Zheng Y. Enantioselective separation and determination of the dinotefuran enantiomers in rice, tomato and apple by HPLC. J Sep Sci 2012; 35:200-5. [DOI: 10.1002/jssc.201100823] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 10/12/2011] [Accepted: 10/12/2011] [Indexed: 11/09/2022]
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Zhang H, Wang X, Qian M, Wang X, Xu H, Xu M, Wang Q. Residue analysis and degradation studies of fenbuconazole and myclobutanil in strawberry by chiral high-performance liquid chromatography-tandem mass spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:12012-12017. [PMID: 21967215 DOI: 10.1021/jf202975x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A simple and sensitive enantioselective method for the determination of fenbuconazole and myclobutanil in strawberry was developed by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Fenbuconazole and myclobutanil residues in strawberry were extracted with acetonitrile containing 1% acetic acid, and an aliquot was cleaned up with PSA (primary and secondary amine) and C(18) sorbent. The direct resolution of fenbuconazole and myclobutanil enantiomers was performed on a cellulose tris (3,5-dimethylphenylcarbamate) column using acetonitrile-0.1% formic acid solution (60:40, v/v) as the mobile phase. Quantification was achieved using matrix-matched standard calibration curves, and the limits of quantification for fenbuconazole and myclobutanil enantiomers in strawberry were both 2 μg/kg. The method was successfully utilized to investigate the probable enantioselective degradation of fenbuconazole and myclobutanil in strawberry. The results showed that the degradation of the fenbuconazole and myclobutanil enantiomers in strawberry followed pseudofirst-order kinetics (R(2) > 0.97). The results from this study revealed that the degradation of fenbuconazole in strawberry was not enantioselective, while the degradation of myclobutanil was enantioselective, and the (+)-myclobutanil showed a faster degradation than (-)-myclobutanil in strawberry, resulting in the relative enrichment of (-)-myclobutanil in residue. The results could provide a reference to fully evaluate the risks of these two fungicides.
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Affiliation(s)
- Hu Zhang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease 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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