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Nayak S, Borse S, Jha S, Mehta VN, Murthy ZVP, Park TJ, Kailasa SK. Development of Copper Nanoclusters-Based Turn-Off Nanosensor for Fluorescence Detection of Two Pyrethroid Pesticides (Cypermethrin and Lambda-Cyhalothrin). J Fluoresc 2023:10.1007/s10895-023-03537-0. [PMID: 38109031 DOI: 10.1007/s10895-023-03537-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 11/30/2023] [Indexed: 12/19/2023]
Abstract
Fluorescent copper nanoclusters (Cu NCs) were synthesized by using Withania somnifera (W. somnifera) plant extract as a biotemplate. Aqueous dispersion of W. somnifera-Cu NCs displays intense emission peak at 458 nm upon excitation at 350 nm. This fluorescence emission was utilized for the detection of two pyrethroid pesticides (cypermethrin and lambda-cyhalothrin) via "turn-off" mechanism. Upon the addition of two pyrethiod pesticides independently, the fluorescence emission of W. somnifera-Cu NCs was gradually decreased with increasing concentrations of both pesticides. It was noticed that the decrease in emission intensity at 458 nm was linearly dependent on the logarithm of both pesticides concentrations in the ranges of 0.01-100 μM and of 0.05-100 μM for cypermethrin and lambda-cyhalothrin, respectively. Consequently, the limits of detection were found to be 27.06 and 23.28 nM for cypermethrin and lambda-cyhalothrin, respectively. The as-fabricated W. somnifera-Cu NCs acted as a facile sensor for the analyses of cypermethrin and lambda-cyhalothrin in vegetables (tomato and bottle gourd), which demonstrates that it could be used as portable sensing platform for assaying of two pyrethroid pesticides in food samples.
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Affiliation(s)
- Satyaprakash Nayak
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, 395 007, India
| | - Shraddha Borse
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, 395 007, India
| | - Sanjay Jha
- ASPEE SHAKILAM Biotechnology Institute, Navsari Agricultural University, Surat, 395007, Gujarat, India
| | - Vaibhavkumar N Mehta
- ASPEE SHAKILAM Biotechnology Institute, Navsari Agricultural University, Surat, 395007, Gujarat, India
| | - Z V P Murthy
- Department of Chemical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, 395 007, India
| | - Tae Jung Park
- Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, 395 007, India.
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2
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Munjanja BK, Nomngongo PN, Mketo N. Organochlorine pesticides in vegetable oils: An overview of occurrence, toxicity, and chromatographic determination in the past twenty-two years (2000-2022). Crit Rev Food Sci Nutr 2023:1-17. [PMID: 37335094 DOI: 10.1080/10408398.2023.2222010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Organochlorine pesticides (OCPs) are used globally to control pests in the food industry. However, some have been banned due to their toxicity. Although they have been banned, OCPs are still discharged into the environment and persist for long periods of time. Therefore, this review focused on the occurrence, toxicity, and chromatographic determination of OCPs in vegetable oils over the last 22 years (2000-2022) (111 references).Literature search shows that OCPs kill pests by destroying endocrine, teratogenic, neuroendocrine, immune, and reproductive systems. However, only five studies investigated the fate of OCPs in vegetable oils and the outcome revealed that some of the steps involved during oil processing introduce more OCPs. Moreover, direct chromatographic determination of OCPs was mostly performed using online LC-GC methods fitted with oven transfer adsorption desorption interface. While indirect chromatographic determination was favored by QuEChERS extraction technique, gas chromatography frequently coupled to electron capture detection (ECD), gas chromatography in selective ion monitoring mode (SIM), and gas chromatography tandem mass spectrometry (GC-MS/MS) were the most common techniques used for detection. However, the greatest challenge still faced by analytical chemists is to obtain clean extracts with acceptable extraction recoveries (70-120%). Hence, more research is still required to develop greener and selective extraction methods toward OCPs, thus improving extraction recoveries. Moreover, advanced techniques like gas chromatography high resolution mass spectrometry (GC-HRMS) must also be explored. OCPs prevalence in vegetable oils varied greatly in various countries, and concentrations of up to 1500 µg/kg were reported. Additionally, the percentage of positive samples ranged from 1.1 to 97.5% for endosulfan sulfate.
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Affiliation(s)
- Basil K Munjanja
- Department of Chemistry, College of Science, Engineering and Technology, Florida Science Campus, University of South Africa, Roodepoort, Johannesburg, South Africa
| | - Philiswa N Nomngongo
- Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Nomvano Mketo
- Department of Chemistry, College of Science, Engineering and Technology, Florida Science Campus, University of South Africa, Roodepoort, Johannesburg, South Africa
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Zhu X, Chuai Q, Zhang D, Liu H, Sun B. A Robust Ratiometric Fluorescent Sensor Based on Covalent Assembly of Dipeptides and Biomolecules for the High-Sensitive and Optosmart Detection of Pyrethroids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3040-3049. [PMID: 36716129 DOI: 10.1021/acs.jafc.2c07397] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In this study, two ultrashort dipeptides, diphenylalanine (FF) or C-terminal amidated diphenylalanine (DPA), were covalently self-assembled with genipin to obtain two well-defined supramolecular peptide nanoparticles for the detection of pyrethroids. DPA-genipin nanoparticles (PNPs) demonstrated excellent dual-emission fluorescence characteristics, tunable particle size, and robust photostability. Parallel to this, PNPs showed a ratiometric fluorescence response to λ-cyhalothrin (LC) with a distinct green-to-red color transition. The satisfactory self-calibration capability of the ratiometric system enabled PNPs to respond sensitively to LC in a wide range (5-800 μg/L) with a lower limit of detection of 0.034 μg/L. The introduction of a smartphone application made it easy to develop an intelligent evaluation platform based on PNPs, which had been proven to be applicable for on-site visualization of LC in agricultural products. The platform proposed here may be a new application of peptide self-assembly in sensing, with both important food safety implications and great economic value.
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Affiliation(s)
- Xuecheng Zhu
- School of Food and Health, Beijing Technology and Business University (BTBU), No. 11 Fucheng Road, Beijing100048, People's Republic of China
| | - Qingxin Chuai
- School of Food and Health, Beijing Technology and Business University (BTBU), No. 11 Fucheng Road, Beijing100048, People's Republic of China
| | - Dianwei Zhang
- School of Food and Health, Beijing Technology and Business University (BTBU), No. 11 Fucheng Road, Beijing100048, People's Republic of China
| | - Huilin Liu
- School of Food and Health, Beijing Technology and Business University (BTBU), No. 11 Fucheng Road, Beijing100048, People's Republic of China
| | - Baoguo Sun
- School of Food and Health, Beijing Technology and Business University (BTBU), No. 11 Fucheng Road, Beijing100048, People's Republic of China
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4
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Evaluation of Alternaria toxins in fruits, vegetables and their derivatives marketed in China using a QuEChERS method coupled with ultra-high performance liquid chromatography-tandem mass spectrometry: Analytical methods and occurrence. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Wang S, Li X, Li M, Li X, Zhang Q, Li H. Emulsification/demulsification method coupled to GC–MS/MS for analysis of multiclass pesticide residues in edible oils. Food Chem 2022; 379:132098. [DOI: 10.1016/j.foodchem.2022.132098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/13/2021] [Accepted: 01/05/2022] [Indexed: 11/25/2022]
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Zhang Q, Xiao W, Wu Y, Fan Y, Zou W, Xu K, Yuan Y, Mao X, Wang Y. A simple, environmental-friendly and reliable d-SPE method using amino-containing metal-organic framework MIL-125-NH 2 to determine pesticide residues in pomelo samples from different localities. Food Chem 2022; 372:131208. [PMID: 34601418 DOI: 10.1016/j.foodchem.2021.131208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/16/2021] [Accepted: 09/20/2021] [Indexed: 01/18/2023]
Abstract
A simple, environmentally-friendly and reliable method was developed to simultaneously monitor the residue of methyl 1-naphthalene acetate, parathion-methyl, fenitrothion, bromophos and phenthoate in pomelo by using dispersive solid-phase extraction technique (d-SPE). In this method, these target analytes were captured by MIL-125-NH2 and detected by GC-MS/MS. The key parameters of d-SPE were optimized by the single factor experiment. Under the optimized conditions, a good determination coefficient (R2 > 0.9922) and extraction recoveries (64.7-116.8%) are obtained. The limit of detections (0.03-1.07 ng/g) is lower than the MRLs in citrus fruits established by EU (10-15000 ng/g) and China (10-10000 ng/g). The precisions of intra-day and inter-day are 1.3-8.9% and 3.8-14.9%, respectively. In addition, the sorbent MIL-125-NH2 is stable and can be reused at least eight times. These results prove the established method is efficient and reliable to detect the pesticide residues in pomelo.
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Affiliation(s)
- Qingqing Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Jiangxi, China
| | - Weiming Xiao
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, College of Chemistry, Nanchang University, Nanchang 330031, China
| | - Yuqin Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Jiangxi, China
| | - Yunxue Fan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Jiangxi, China
| | - Wenhaotian Zou
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Jiangxi, China
| | - Kang Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Jiangxi, China
| | - Yi Yuan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Jiangxi, China
| | - Xuejin Mao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Yuanxing Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Jiangxi, China.
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7
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Talari K, Ganji SK, Mutyam S, Tiruveedula RR. Gas chromatography-mass spectrometric determination of organic acids by ion pair liquid extraction followed by in-situ butylation from aqua feed samples. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2022; 28:25-34. [PMID: 35746850 DOI: 10.1177/14690667221103227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A rapid and sensitive analytical method was developed to quantitatively determine organic acids (OAs) from fish feed samples extracted by ion-pair (IP) solvent extraction, followed by in-situ butylation and gas chromatography-mass spectrometric (GC-MS) analysis. The extraction of OAs was carried out with acetonitrile containing 10 mM tetrabutylammonium hydroxide (TBAH), and the analytes were derivatized to their butyl esters in the injection port of the GC-MS system. The developed method was validated in the range of 1-5000 ng/g, with recoveries ranging from 93-117%. The limit of detection (LOD) and limit of quantification (LOQ) of the method was 1-5 ng/g and 2-10 ng/g, respectively, yielding good linearity (R2 > 0.9990) and precision with a relative standard deviation less than 10%. The proposed method was successfully applied to analyze OAs in sinking and floating fish feed samples. The analyzed samples showed the presence of benzoic, succinic, fumaric, glutaric, adipic, and phthalic acids in sinking feed samples; and benzoic, succinic, adipic, phthalic acids in floating feed samples, respectively.
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Affiliation(s)
- Kalpana Talari
- Department of Chemistry, 28629Acharya Nagarjuna University, Nagarjuna Nagar, Guntur, Andhra Pradesh, India
- Department of Chemistry, Government College for Women (A), Guntur, Andhra Pradesh, India
| | - Sai Krishna Ganji
- Analytical and Structural Chemistry Division, Centre for Mass Spectrometry, 62391CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Telangana, India
| | - Satish Mutyam
- Analytical and Structural Chemistry Division, Centre for Mass Spectrometry, 62391CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Telangana, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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8
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Quantitative determination of targeted and untargeted pesticide residues in coconut milk by liquid chromatography - Atmospheric pressure chemical ionization - high energy collisional dissociation tandem high-resolution mass spectrometry. J Chromatogr A 2021; 1659:462649. [PMID: 34742133 DOI: 10.1016/j.chroma.2021.462649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/23/2021] [Accepted: 10/23/2021] [Indexed: 11/20/2022]
Abstract
Quantitative determination of targeted and untargeted pesticide residues from food products is very important for the assessment of safety of the food products. In the present work, a simple, selective and sensitive method based on liquid chromatography atmospheric pressure chemical ionization high energy collisional dissociation high-resolution tandem mass spectrometry (LC-APCI-HCD-HRMS/MS) for quantification of 19 priority organophosphorus and carbamate pesticides and 10 untargeted pesticides from coconut milk samples was developed and validated. The pesticide residues were extracted by solvent partition followed by dispersive solid-phase extraction clean-up and quantified by LC-APCI-HRMS/MS technique. The method showed the linearity for targeted pesticides in the range of 0.5-1000 ng/g with a limit of detection of ranging 0.5-5 ng/g and limit of quantification of ranging 1-10 ng/g measured at 3:1 and 10:1 signal to noise ratios, respectively. The untargeted pesticide residues were quantified by the response factor method. The method was validated for intraday and interday precision, which was less than 15%. The recovery of the analytes varied between 82 and 117%, and the developed method was applied for the analysis of the coconut milk samples. The analyzed samples showed the presence of quinalphos, malathion, and methiocarb at concentrations of 4.55, 5.54, and 206.99 ng/g.
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9
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Li L, Yin Y, Zheng G, Liu S, Zhao C, Xie W, Ma L, Shan Q, Dai X, Wei L. Determination of multiclass herbicides in sediments and aquatic products using QuECHERS combined with ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) and its application to risk assessment of rice-fish co-culture system in China. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106628] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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Zhou Q, Wu Y, Sun Y, Sheng X, Tong Y, Guo J, Zhou B, Zhao J. Magnetic polyamidoamine dendrimers for magnetic separation and sensitive determination of organochlorine pesticides from water samples by high-performance liquid chromatography. J Environ Sci (China) 2021; 102:64-73. [PMID: 33637266 DOI: 10.1016/j.jes.2020.09.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/14/2020] [Accepted: 09/15/2020] [Indexed: 06/12/2023]
Abstract
Organochlorine pesticides (OCPs) have received much attention due to their toxicity. Reliable methods to monitor their residues in the environment are needed. Here, magnetic polyamidoamine dendrimers were prepared by co-precipitation, Michael addition, and amidation. The magnetic polyamidoamine dendrimers demonstrated good adsorption ability for OCPs-this feature was utilized to construct a sensitive tool for monitoring OCPs in water samples. The proposed method provided remarkable linearity from 0.1 to 500 μg/L and satisfactory limits of detection from 0.012 to 0.029 μg/L. The spiked recoveries of the four target analytes were 91.8%-103.5% with relative standard deviations less than 4.5%. The magnetic materials had good reusability. The results indicated that the resulting method was an efficient, easy, rapid, economical, and eco-friendly tool for monitoring OCPs in aqueous samples.
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Affiliation(s)
- Qingxiang Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China.
| | - Yalin Wu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China; Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China
| | - Yi Sun
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Xueying Sheng
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Yayan Tong
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Jinghan Guo
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Boyao Zhou
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
| | - Jingyi Zhao
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
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11
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Meng Z, Li X, Qiao K, Zeng H, Cui X, Liu Z, Ju Z, Lu R, Gao H, Zhou W. Phosphonium-based deep eutectic solvent coupled with vortex-assisted liquid-liquid microextraction for the determination of benzoylurea insecticides in olive oil. J Sep Sci 2021; 44:1529-1536. [PMID: 33506992 DOI: 10.1002/jssc.202001075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 02/02/2023]
Abstract
In this study, a novel method using a phosphonium-based deep eutectic solvent coupled with vortex-assisted liquid-liquid microextraction was investigated for the enrichment and separation of five benzoylurea insecticides in olive oil. The experimental factors affecting the extraction efficiency, including the extractant type, deep eutectic solvent volume, extraction time, and extraction mode, were optimized. Under optimal conditions, good linearity was observed for all target analytes, with correlation coefficients (r) ranging from 0.9971 to 0.9998; the limits of detection were in the range of 1.5 to 7.5 μg/L, and the recoveries of analytes using the proposed method ranged between 66.9 and 111.0%. The simple, rapid, and effective method was successfully applied for detecting target analytes in olive oil sample.
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Affiliation(s)
- Zilin Meng
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Xin Li
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Kexin Qiao
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Haozhe Zeng
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Xiaoyan Cui
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Zikai Liu
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Ziwei Ju
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Runhua Lu
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Haixiang Gao
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
| | - Wenfeng Zhou
- Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China
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Li C, Chen Z, Qin D, Liu R, Li L, Li W, He Y, Yuan L. Simultaneous determination of the herbicide bixlozone and its metabolites in plant and animal samples by liquid chromatography-tandem mass spectrometry. J Sep Sci 2021; 44:822-832. [PMID: 33289303 DOI: 10.1002/jssc.202000992] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/29/2020] [Accepted: 12/03/2020] [Indexed: 12/31/2022]
Abstract
Tracing the herbicide bixlozone and its metabolites in food is necessary to assess their risks to human health. In the study, a rapid and effective analytical method using the quick, easy, cheap, effective, rugged, and safe method for the simultaneous determination of bixlozone and its metabolites (2,4-dichlorobenzoic acid, 3-hydroxy-propanamide-bixlozone, and 5'-hydroxy-bixlozone) in plant and animal samples (tomato, cucumber, apple, wheat flour, meat, milk, and egg) was developed based on ultra high performance liquid chromatography-tandem mass spectrometry. The method was validated based on the linearity (R2 > 0.99), sensitivity (limit of quantification = 0.01 mg/kg), recovery (70.2-115.1%), and precision (intraday 1.2-17.6%, interday 0.3-16.0%). Detection was achieved within 6.0 min. The method is reliable for the determination of four target compounds in all seven matrices. The satisfactory validation criteria and successful application show that the proposed methodology is suitable for the detection of four target compounds in real matrices.
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Affiliation(s)
- Congdi Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Zenglong Chen
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, P. R. China
| | - Dongmei Qin
- Institute for the Control of Agrochemicals, Ministry of Agriculture and Rural Affairs, Beijing, P. R. China
| | - Rong Liu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Li Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, P. R. China
| | - Wei Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, P. R. China
| | - Yujian He
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, P. R. China
| | - Longfei Yuan
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, P. R. China
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Combination of dispersive solid phase extraction with solidification organic drop–dispersive liquid–liquid microextraction based on deep eutectic solvent for extraction of organophosphorous pesticides from edible oil samples. J Chromatogr A 2020; 1627:461390. [DOI: 10.1016/j.chroma.2020.461390] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/15/2020] [Accepted: 07/05/2020] [Indexed: 01/10/2023]
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14
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Tang J, Ma S, Liu R, Yue C, Li G, Yu Y, Yang Y, An T. The pollution profiles and human exposure risks of chlorinated and brominated PAHs in indoor dusts from e-waste dismantling workshops: Comparison of GC-MS, GC-MS/MS and GC × GC-MS/MS determination methods. JOURNAL OF HAZARDOUS MATERIALS 2020; 394:122573. [PMID: 32278123 DOI: 10.1016/j.jhazmat.2020.122573] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/05/2020] [Accepted: 03/19/2020] [Indexed: 06/11/2023]
Abstract
The toxicities of some chlorinated and brominated polycyclic aromatic hydrocarbons (X-PAHs) are higher than their corresponding parent PAHs. However, the identification and quantitation of X-PAHs in environment are still changeable and limitedly reported. To develop a robust method for routine analysis of X-PAHs in environmental samples, the determination of 34 X-PAHs was performed and compared using different instruments, including gas chromatography-mass spectrometry (GC-MS), gas chromatography-tandem mass spectrometry (GC-MS/MS) in both electron ionization (EI) and negative chemical ionization (NCI) modes, and comprehensive two-dimensional gas chromatograph-tandem mass spectrometer (GC × GC-MS/MS). GC-EI-MS/MS possessed the highest sensitivity with method detection limits of 2.00-40.0 and 2.00-20.0 pg/g dry weight (dw) for Cl-PAHs and Br-PAHs, respectively. This validated method was then applied to analyze X-PAHs in indoor dusts from a typical e-waste dismantling workshop, and the concentrations of Σ18Br-PAHs (8.80-399 ng/g dw) were higher than Σ16Cl-PAHs (7.91-137 ng/g dw). The toxicity equivalency quantities (TEQs) of Cl-PAHs at e-waste dismantling workshop and Br-PAHs at raw materials crushing workshop showed the highest values of 176 and 453 pg·TEQ/g, respectively. Cl-PAHs and Br-PAHs posed a potential health risk to workers through dust ingestion in workshops. Further attention should be payed to the formation mechanism of X-PAHs and the health risk.
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Affiliation(s)
- Jian Tang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Shengtao Ma
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Synergy Innovation Institute of GDUT, Shantou, 515100, China
| | - Ranran Liu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Congcong Yue
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Guiying Li
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Synergy Innovation Institute of GDUT, Shantou, 515100, China
| | - Yingxin Yu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yan Yang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Synergy Innovation Institute of GDUT, Shantou, 515100, China
| | - Taicheng An
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China.
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15
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Determination of polychlorinated biphenyls in tea using gas chromatography–tandem mass spectrometry combined with dispersive solid phase extraction. Food Chem 2020; 316:126290. [DOI: 10.1016/j.foodchem.2020.126290] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/16/2019] [Accepted: 01/22/2020] [Indexed: 12/24/2022]
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16
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Multi-residue determination of 325 pesticides in chicken eggs with EMR-Lipid clean-up by UHPLC–MS/MS and GC–MS/MS. Chromatographia 2020. [DOI: 10.1007/s10337-020-03876-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Yuan YY, Wang ST, Cheng Q, Kong DM, Che XG. Simultaneous determination of carbendazim and chlorothalonil pesticide residues in peanut oil using excitation-emission matrix fluorescence coupled with three-way calibration method. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 220:117088. [PMID: 31158606 DOI: 10.1016/j.saa.2019.04.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 04/24/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
A novel fluorescence application for simultaneous determination of two common fungicide pesticides (carbendazim and chlorothalonil) in peanut oil is presented. Using the strategy of combining excitation-emission matrix (EEM) fluorescence with three-way calibration methods, the proposed approach successfully achieved quantitative analysis of carbendazim and chlorothalonil pesticide residues in peanut oil, even with highly overlapped spectra. It needs little preparation, using "mathematical separation" instead of "analytical separation" to achieve concentration prediction of target analytes in complex systems. Each analyte was performed using fluorescence spectroscopy after instrument spectral correction and scatter removal. Then the data were modeled with two three-way calibration algorithms, including alternating trilinear decomposition (ATLD) and alternating penalty trilinear decomposition (APTLD). The results indicated that APTLD performed slightly better than ATLD for this system. The carbendazim and chlorothalonil can be recognized simultaneously with the correlation coefficients all above 0.96 between resolved spectra and actual spectra. Satisfactory results have been achieved with the average recoveries (mean ± standard deviation) of carbendazim and chlorothalonil being 100.2 ± 6.7% and 99.7 ± 6.7%, respectively. Moreover, as for carbendazim and chlorothalonil, the sensitivity (SENs) are 1.50 × 102 and 3.80 × 102 mL ng-1, the limits of detection (LODs) are 11 ng mL-1 and 4.3 ng mL-1, the limit of quantitation (LOQ) are 33.33 ng mL-1 and 13.03 ng mL-1, respectively. The above results demonstrated that the proposed method is sensitive, fast and accurate for direct quantitative analysis of multiple pesticide residues in complex matrix such as that of peanut oil.
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Affiliation(s)
- Yuan-Yuan Yuan
- Measurement Technology and Instrument Key Lab of Hebei Province, Yanshan University, Qinhuangdao 066004, China
| | - Shu-Tao Wang
- Measurement Technology and Instrument Key Lab of Hebei Province, Yanshan University, Qinhuangdao 066004, China.
| | - Qi Cheng
- Measurement Technology and Instrument Key Lab of Hebei Province, Yanshan University, Qinhuangdao 066004, China
| | - De-Ming Kong
- Measurement Technology and Instrument Key Lab of Hebei Province, Yanshan University, Qinhuangdao 066004, China
| | - Xian-Ge Che
- Measurement Technology and Instrument Key Lab of Hebei Province, Yanshan University, Qinhuangdao 066004, China
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18
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Mao X, Yan A, Wan Y, Luo D, Yang H. Dispersive Solid-Phase Extraction Using Microporous Sorbent UiO-66 Coupled to Gas Chromatography-Tandem Mass Spectrometry: A QuEChERS-Type Method for the Determination of Organophosphorus Pesticide Residues in Edible Vegetable Oils without Matrix Interference. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:1760-1770. [PMID: 30657679 DOI: 10.1021/acs.jafc.8b04980] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A QuEChERS-type method without matrix interference was designed and developed to determine organophosphorus pesticide residues in edible vegetable oils, based on dispersive solid-phase extraction with cleanup using UiO-66 as sorbent. Microporous UiO-66 directly and selectively adsorbed organophosphorus pesticides and excluded interfering compounds. Clean analytes were obtained by elution and analyzed using gas chromatography-tandem mass spectrometry. The dispersive solid-phase extraction conditions (amount of adsorbent, extraction time, desorption solvent volume, and elution time) were optimized. The limits of detection of the pesticides in vegetable oils were 0.16-1.56 ng/g. Under optimized conditions, the average pesticide recoveries were 81.1-113.5%. The intraday and interday relative standard deviations for analyte recovery were <8.2 and <13.9%, respectively. Thus, the method is reliable and could detect organophosphorus pesticide residues in edible vegetable oils. Furthermore, UiO-66 can be easily recycled and reused at least 10 times, reducing the cost of analysis.
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Affiliation(s)
| | | | | | - Dongmei Luo
- College of Chemistry and Chemical Engineering , Chifeng University , Chifeng 024000 , People's Republic of China
| | - Hongshun Yang
- Food Science and Technology Programme, c/o Department of Chemistry , National University of Singapore , Singapore 117543 , Singapore
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19
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Madej K, Kalenik TK, Piekoszewski W. Sample preparation and determination of pesticides in fat-containing foods. Food Chem 2018; 269:527-541. [DOI: 10.1016/j.foodchem.2018.07.007] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/14/2018] [Accepted: 07/01/2018] [Indexed: 01/20/2023]
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20
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Dallegrave A, Pizzolato TM, Barreto F, Bica VC, Eljarrat E, Barceló D. Residue of insecticides in foodstuff and dietary exposure assessment of Brazilian citizens. Food Chem Toxicol 2018; 115:329-335. [DOI: 10.1016/j.fct.2018.03.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 03/07/2018] [Accepted: 03/20/2018] [Indexed: 01/18/2023]
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21
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Hakme E, Lozano A, Ferrer C, Díaz-Galiano F, Fernández-Alba A. Analysis of pesticide residues in olive oil and other vegetable oils. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2017.12.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Bhamore JR, Jha S, Basu H, Singhal RK, Murthy ZVP, Kailasa SK. Tuning of gold nanoclusters sensing applications with bovine serum albumin and bromelain for detection of Hg 2+ ion and lambda-cyhalothrin via fluorescence turn-off and on mechanisms. Anal Bioanal Chem 2018; 410:2781-2791. [PMID: 29480389 DOI: 10.1007/s00216-018-0958-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/05/2018] [Accepted: 02/09/2018] [Indexed: 02/06/2023]
Abstract
Herein, fluorescent gold nanoclusters (Au NCs) were obtained by one-pot synthetic method using bovine serum albumin (BSA) and bromelain as templates. As-synthesized fluorescent Au NCs were stable and showed bright red fluorescence under UV lamp at 365 nm. The fluorescent Au NCs exhibit the emission intensity at 648 nm when excited at 498 nm. Various techniques were used such as spectroscopy (UV-visible, fluorescence, and Fourier-transform infrared), high-resolution transmission electron microscopy, and dynamic light scattering for the characterization of fluorescent Au NCs. The values of I0/I at 648 nm are proportional to the concentrations of Hg2+ ion in the range from 0.00075 to 5.0 μM and of lambda-cyhalothrin in the range from 0.01 to 10 μM with detection limits of 0.0003 and 0.0075 μM for Hg2+ ion and lambda-cyhalothrin, respectively. The practical application of the probe was successfully demonstrated by analyzing Hg2+ ion and lambda-cyhalothrin in water samples. In addition, Au NCs used as probes for imaging of Simplicillium fungal cells. These results indicated that the as-synthesized Au NCs have proven to be promising fluorescent material for the sensing of Hg2+ ion and lambda-cyhalothrin in environmental and for imaging of microorganism cells in biomedical applications.
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Affiliation(s)
- Jigna R Bhamore
- Department of Applied Chemistry, S. V. National Institute of Technology, Surat, Gujarat, 395 007, India
| | - Sanjay Jha
- Gujarat Agricultural Biotechnology Institute, Navsari Agricultural University, Surat, Gujarat, 395007, India
| | - Hirakendu Basu
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, Maharashtra, 400085, India
| | - Rakesh Kumar Singhal
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, Maharashtra, 400085, India
| | - Z V P Murthy
- Chemical Engineering Department, S. V. National Institute of Technology, Surat, Gujarat, 395 007, India
| | - Suresh Kumar Kailasa
- Department of Applied Chemistry, S. V. National Institute of Technology, Surat, Gujarat, 395 007, India.
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23
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Madej K, Janiga K, Piekoszewski W. The Potential of Graphene as an Adsorbent for Five Pesticides from Different Classes in Rape Oil Samples Using Dispersive Solid-Phase Extraction. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:3587860. [PMID: 29805833 PMCID: PMC5901433 DOI: 10.1155/2018/3587860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 01/01/2018] [Accepted: 01/11/2018] [Indexed: 05/11/2023]
Abstract
Isolation conditions for five pesticides (metazachlor, tebuconazole, λ-cyhalothrin, chlorpyrifos, and deltamethrin) from rape oil samples were examined using the dispersive solid-phase graphene extraction technique. To determine the optimal extraction conditions, a number of experimental factors (amount of graphene, amount of salt, type and volume of the desorbing solvent, desorption time with and without sonication energy, and temperature during desorption) were studied. The compounds of interest were separated and detected by an HPLC-UV employing a Kinetex XB-C18 column and a mobile phase consisting of acetonitrile and water flowing in a gradient mode. The optimized extraction conditions were: the amount of graphene 15 mg, desorbing solvent (acetonitrile) 5 mL, time desorption 10 min at 40°C, and amount of NaCl 1 g. The detection limit for metazachlor, tebuconazole, λ-cyhalothrin, and chlorpyrifos was 62.5 ng·g-1, and for deltamethrin, it was 500 ng·g-1. The obtained results lead to the conclusion that graphene may be successfully used for the isolation of the five pesticides from rape oil. However, their determination at low concentration levels, as they occur in real oil samples, requires the employment of appropriately highly sensitive analytical methods, as well as a more suitable graphene form (e.g., magnetically modified graphene).
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Affiliation(s)
- Katarzyna Madej
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Krakow 30-387, Poland
| | - Katarzyna Janiga
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Krakow 30-387, Poland
| | - Wojciech Piekoszewski
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University, Krakow 30-387, Poland
- Department of Food Science and Technology, School of Biomedicine, Far Eastern Federal University, Vladivostok, Russia
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24
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Juan C, Mañes J, Font G, Juan-García A. Determination of mycotoxins in fruit berry by-products using QuEChERS extraction method. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.08.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Dispersive Solid Phase Extraction for the Analysis of Veterinary Drugs Applied to Food Samples: A Review. Int J Anal Chem 2017; 2017:8215271. [PMID: 29181027 PMCID: PMC5664330 DOI: 10.1155/2017/8215271] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 08/16/2017] [Accepted: 08/29/2017] [Indexed: 12/01/2022] Open
Abstract
To achieve analytical success, it is necessary to develop thorough clean-up procedures to extract analytes from the matrix. Dispersive solid phase extraction (DSPE) has been used as a pretreatment technique for the analysis of several compounds. This technique is based on the dispersion of a solid sorbent in liquid samples in the extraction isolation and clean-up of different analytes from complex matrices. DSPE has found a wide range of applications in several fields, and it is considered to be a selective, robust, and versatile technique. The applications of dispersive techniques in the analysis of veterinary drugs in different matrices involve magnetic sorbents, molecularly imprinted polymers, carbon-based nanomaterials, and the Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method. Techniques based on DSPE permit minimization of additional steps such as precipitation, centrifugation, and filtration, which decreases the manipulation of the sample. In this review, we describe the main procedures used for synthesis, characterization, and application of this pretreatment technique and how it has been applied to food analysis.
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26
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Fang Y, Tian W, Pei F, Li P, Shao X, Fan Y, Hu Q. Simultaneous determination of pesticide residues and antioxidants in blended oil using a liquid-liquid extraction combined with dispersive solid phase extraction method. Food Chem 2017; 229:347-353. [DOI: 10.1016/j.foodchem.2017.02.094] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 01/16/2017] [Accepted: 02/18/2017] [Indexed: 11/26/2022]
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27
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Method Development for Sulfonylurea Herbicides Analysis in Rapeseed Oil Samples by HPLC–DAD: Comparison of Zirconium-Based Sorbents and EMR-Lipid for Clean-up of QuEChERS Extract. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-0939-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Wang J, Gong Z, Zhang T, Feng S, Wang J, Zhang Y. Simultaneous determination of 106 pesticides in nuts by LC-MS/MS using freeze-out combined with dispersive solid-phase extraction purification. J Sep Sci 2017; 40:2398-2405. [PMID: 28374572 DOI: 10.1002/jssc.201700092] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/23/2017] [Accepted: 03/24/2017] [Indexed: 11/11/2022]
Abstract
As a result of the low water content and high fat matrices in nuts, it is very difficult to simultaneously determine multi-pesticides in trace levels. Here, a sample pretreatment method was developed in which, microwave-assisted solvent extraction was firstly used to extract pesticides, and then a two-step cleanup method was conducted combining freeze-out with dispersive solid-phase extraction to remove the lipidic matrix. By this way, 106 pesticides were simultaneously determined in the complicated nut sample by using an ultra-high pressure liquid chromatography coupled with a tandem mass spectrometer. Average recoveries were 75.3-119.3% with relative standard deviations < 14% at three concentration levels. The limits of detection and quantification were in the ranges of 0.3-3.0 and 1.0-10.0 μg/kg, respectively. Furthermore, the method was successfully applied to the determination of pesticides in 180 commercial nut samples.
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Affiliation(s)
- Jingjing Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering Xinjiang University, Urumqi, China.,Technical Center of Xinjiang Entry-Exit Inspection and Quarantine Bureau, Urumqi, China
| | - Zhiguo Gong
- Technical Center of Xinjiang Entry-Exit Inspection and Quarantine Bureau, Urumqi, China
| | - Tingting Zhang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering Xinjiang University, Urumqi, China
| | - Shun Feng
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Jide Wang
- Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education & Xinjiang Uygur Autonomous Region, College of Chemistry and Chemical Engineering Xinjiang University, Urumqi, China
| | - Yi Zhang
- College of Chemistry and Chemical Engineering, Central South University, Changsha, China
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29
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Shi Z, Zhang S, Huai Q, Xu D, Zhang H. Methylamine-modified graphene-based solid phase extraction combined with UPLC-MS/MS for the analysis of neonicotinoid insecticides in sunflower seeds. Talanta 2017; 162:300-308. [DOI: 10.1016/j.talanta.2016.10.042] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 10/01/2016] [Accepted: 10/08/2016] [Indexed: 11/25/2022]
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30
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Development, optimization and validation of QuEChERS based liquid chromatography tandem mass spectrometry method for determination of multimycotoxin in vegetable oil. Food Control 2016. [DOI: 10.1016/j.foodcont.2016.04.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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31
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Bernardi G, Kemmerich M, Ribeiro LC, Adaime MB, Zanella R, Prestes OD. An effective method for pesticide residues determination in tobacco by GC-MS/MS and UHPLC-MS/MS employing acetonitrile extraction with low-temperature precipitation and d-SPE clean-up. Talanta 2016; 161:40-47. [PMID: 27769424 DOI: 10.1016/j.talanta.2016.08.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 01/12/2023]
Abstract
An effective method has been developed and validated for the determination of residues of 55 pesticides in tobacco. The proposed sample preparation method is based on acetonitrile extraction, low-temperature precipitation (LTP) and dispersive solid phase extraction (d-SPE) clean-up. Gas chromatography and ultra-high performance liquid chromatography analysis, both coupled to tandem mass spectrometry (GC-MS/MS and UHPLC-MS/MS), were used for determination. LTP is easy to perform and was crucial to obtain a clean extract. Method quantification limit for the pesticides were between 25 and 75µgkg-1. Extraction recoveries obtained for blank samples spiked at 25, 75, 125 and 250µgkg-1 levels ranged from 63 to 161% with relative standard deviations (RSD)≤20%. The method was successfully applied to the analysis of thirteen different tobacco samples, providing to be a robust procedure for routine analysis. The compounds pirimiphos methyl and isofenphos presented residues in the range of 35-51µgkg-1.
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Affiliation(s)
- Gabrieli Bernardi
- Laboratory of Pesticide Residue Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Santa Maria, RS, 97105-900 Brazil
| | - Magali Kemmerich
- Laboratory of Pesticide Residue Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Santa Maria, RS, 97105-900 Brazil
| | - Lucila C Ribeiro
- Laboratory of Pesticide Residue Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Santa Maria, RS, 97105-900 Brazil
| | - Martha B Adaime
- Laboratory of Pesticide Residue Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Santa Maria, RS, 97105-900 Brazil
| | - Renato Zanella
- Laboratory of Pesticide Residue Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Santa Maria, RS, 97105-900 Brazil
| | - Osmar D Prestes
- Laboratory of Pesticide Residue Analysis (LARP), Chemistry Department, Federal University of Santa Maria, Santa Maria, RS, 97105-900 Brazil.
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32
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Peng G, He Q, Lu Y, Mmereki D, Zhong Z. Determination of organophosphorus pesticides and their major degradation product residues in food samples by HPLC-UV. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:19409-19416. [PMID: 27378220 DOI: 10.1007/s11356-016-7071-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 06/13/2016] [Indexed: 06/06/2023]
Abstract
A simple method based on dispersive solid-phase extraction (DSPE) and dispersive liquid-liquid microextraction method based on solidification of floating organic droplets (DLLME-SFO) was developed for the extraction of chlorpyrifos (CP), chlorpyrifos-methyl (CPM), and their main degradation product 3,5,6-trichloro-2-pyridinol (TCP) in tomato and cucumber samples. The determination was carried out by high performance liquid chromatography with ultraviolet detection (HPLC-UV). In the DSPE-DLLME-SFO, the analytes were first extracted with acetone. The clean-up of the extract by DSPE was carried out by directly adding activated carbon sorbent into the extract solution, followed by shaking and filtration. Under the optimum conditions, the proposed method was sensitive and showed a good linearity within a range of 2-500 ng/g, with the correlation coefficients (r) varying from 0.9991 to 0.9996. The enrichment factors ranged from 127 to 138. The limit of detections (LODs) were in the range of 0.12-0.68 ng/g, and the relative standard deviations (RSDs) for 50 ng/g of each analytes in tomato samples were in the range of 3.25-6.26 % (n = 5). The proposed method was successfully applied for the extraction and determination of the mentioned analytes residues in tomato and cucumber samples, and satisfactory results were obtained.
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Affiliation(s)
- Guilong Peng
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Chongqing University, Chongqing, 400045, China
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Tsinghua University, Beijing, 100084, China
| | - Qiang He
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Chongqing University, Chongqing, 400045, China.
| | - Ying Lu
- Mathematics and Physics, Armed Police College, Chengdu, 610213, China
| | - Daniel Mmereki
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Zhihui Zhong
- Department of Chemistry, Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Tsinghua University, Beijing, 100084, China
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33
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Dallegrave A, Pizzolato TM, Barreto F, Eljarrat E, Barceló D. Methodology for trace analysis of 17 pyrethroids and chlorpyrifos in foodstuff by gas chromatography–tandem mass spectrometry. Anal Bioanal Chem 2016; 408:7689-7697. [DOI: 10.1007/s00216-016-9865-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 07/19/2016] [Accepted: 08/06/2016] [Indexed: 12/19/2022]
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34
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Feizi N, Yamini Y, Moradi M, Ebrahimpour B. Nano-structured gemini-based supramolecular solvent for the microextraction of cyhalothrin and fenvalerate. J Sep Sci 2016; 39:3400-9. [DOI: 10.1002/jssc.201600263] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/16/2016] [Accepted: 06/24/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Neda Feizi
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
| | - Yadollah Yamini
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
| | - Morteza Moradi
- Department of Semiconductors; Materials and Energy Research Center; Karaj Iran
| | - Behnam Ebrahimpour
- Department of Chemistry, Faculty of Sciences; Tarbiat Modares University; Tehran Iran
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35
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Wu R, Ma F, Zhang L, Li P, Li G, Zhang Q, Zhang W, Wang X. Simultaneous determination of phenolic compounds in sesame oil using LC–MS/MS combined with magnetic carboxylated multi-walled carbon nanotubes. Food Chem 2016; 204:334-342. [DOI: 10.1016/j.foodchem.2016.02.086] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 01/26/2016] [Accepted: 02/13/2016] [Indexed: 11/24/2022]
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36
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Dias JV, Cutillas V, Lozano A, Pizzutti IR, Fernández-Alba AR. Determination of pesticides in edible oils by liquid chromatography-tandem mass spectrometry employing new generation materials for dispersive solid phase extraction clean-up. J Chromatogr A 2016; 1462:8-18. [PMID: 27507727 DOI: 10.1016/j.chroma.2016.07.072] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/16/2016] [Accepted: 07/26/2016] [Indexed: 11/27/2022]
Abstract
The goal of this work was to evaluate the efficiency of several sorbents on removal fats from edible oils (olive, soya and sunflower) during the clean-up step for posterior determination of 165 pesticides by UHPLC-QqQ-MS/MS system. The extraction procedure employed in this work was the citrate version of QuEChERS method followed by a step of freezing out with dry ice and clean-up evaluation using i) PSA with magnesium sulfate (d-SPE); ii) magnesium sulfate and Z-sep sorbent (d-SPE); iii) Z-sep (column SPE) and iv) Agilent Bond Elut QuEChERS Enhanced Matrix Removal-Lipid (EMR-Lipid). After evaluation of the recovery results at 10, 20 and 50μgkg(-1), the EMR-Lipid showed important advantages comparing to the other sorbents evaluated, such as better recovery rates and RSD%. The method was validated at the three concentrations described above. Analytical curves linearity was evaluated by spiking blank oil samples at 10, 20, 50, 100 and 500μgkg(-1). The method demonstrated good recoveries values between the acceptable range of 70-120% and RSD%<20 for most of evaluated pesticides. In order to evaluate the performance of the method, this same procedure was employed to other oils such as soya and sunflower with very good results.
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Affiliation(s)
- Jonatan V Dias
- Federal University of Santa Maria (UFSM), Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria, RS, Brazil
| | - Victor Cutillas
- European Union Reference Laboratory for Pesticide Residues in Fruit & Vegetables (EURL-FV), University of Almeria, Agrifood Campus of International Excellence (ceiA3), Almeria, Spain
| | - Ana Lozano
- European Union Reference Laboratory for Pesticide Residues in Fruit & Vegetables (EURL-FV), University of Almeria, Agrifood Campus of International Excellence (ceiA3), Almeria, Spain
| | - Ionara R Pizzutti
- Federal University of Santa Maria (UFSM), Chemistry Department, Center of Research and Analysis of Residues and Contaminants (CEPARC), 97105-900, Santa Maria, RS, Brazil
| | - Amadeo R Fernández-Alba
- European Union Reference Laboratory for Pesticide Residues in Fruit & Vegetables (EURL-FV), University of Almeria, Agrifood Campus of International Excellence (ceiA3), Almeria, Spain.
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37
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Peng G, He Q, Mmereki D, Lu Y, Zhong Z, Liu H, Pan W, Zhou G, Chen J. Dispersive solid-phase extraction followed by vortex-assisted dispersive liquid-liquid microextraction based on the solidification of a floating organic droplet for the determination of benzoylurea insecticides in soil and sewage sludge. J Sep Sci 2016; 39:1258-65. [DOI: 10.1002/jssc.201501347] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 01/13/2016] [Accepted: 01/19/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Guilong Peng
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education; Chongqing University; Chongqing China
- Department of Chemistry; Beijing Key Laboratory of Microanalytical Methods and Instrumentation; Tsinghua University; Beijing China
| | - Qiang He
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education; Chongqing University; Chongqing China
| | - Daniel Mmereki
- Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education; Chongqing University; Chongqing China
| | - Ying Lu
- Mathematics and Physics; Armed Police College; Chengdu China
| | - Zhihui Zhong
- Department of Chemistry; Beijing Key Laboratory of Microanalytical Methods and Instrumentation; Tsinghua University; Beijing China
- The First Clinical Medical College of Fujian Medical University; Fuzhou China
- Department of Orthopaedics; Fujian Zhangzhou Affiliated Hospital of Fujian Medical University; Zhangzhou China
| | - Hanyang Liu
- Department of Chemistry; Beijing Key Laboratory of Microanalytical Methods and Instrumentation; Tsinghua University; Beijing China
| | - Weiliang Pan
- School of River and Ocean Engineering; Chongqing Jiaotong University; Chongqing China
| | - Guangming Zhou
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University); Ministry of Education; School of Chemistry and Chemical Engineering; Southwest University; Chongqing China
| | - Junhua Chen
- Key Laboratory on Luminescence and Real-Time Analysis (Southwest University); Ministry of Education; School of Chemistry and Chemical Engineering; Southwest University; Chongqing China
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Fast Preconcentration of Pesticide Residues in Oilseeds by Combination of QuEChERS with Dispersive Liquid–Liquid Microextraction Followed by Gas Chromatography-Mass Spectrometry. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0402-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Simultaneous determination of pyrethroids residues in fruit and vegetable samples via supercritical fluid extraction coupled with magnetic solid phase extraction followed by HPLC-UV. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2015.07.017] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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40
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Shrivas K, Nirmalkar N, Ghosale A, Thakur SS. Application of silver nanoparticles for a highly selective colorimetric assay of endrin in water and food samples based on stereoselective endo-recognition. RSC Adv 2016. [DOI: 10.1039/c6ra00369a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report a novel and facile strategy for a highly stereoselective colorimetric assay for the detection of endrin pesticide in water and food samples using sucrose capped silver nanoparticles (AgNPs).
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Affiliation(s)
- Kamlesh Shrivas
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya
- Bilaspur
- India
| | - Nidhi Nirmalkar
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya
- Bilaspur
- India
| | - Archana Ghosale
- Department of Chemistry
- Guru Ghasidas Vishwavidyalaya
- Bilaspur
- India
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41
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Chawla S, Patel HK, Vaghela KM, Pathan FK, Gor HN, Patel AR, Shah PG. Development and validation of multiresidue analytical method in cotton and groundnut oil for 87 pesticides using low temperature and dispersive cleanup on gas chromatography and liquid chromatography-tandem mass spectrometry. Anal Bioanal Chem 2015; 408:983-97. [DOI: 10.1007/s00216-015-9192-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/07/2015] [Accepted: 11/12/2015] [Indexed: 01/01/2023]
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42
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In situ metathesis reaction combined with liquid-phase microextraction based on the solidification of sedimentary ionic liquids for the determination of pyrethroid insecticides in water samples. Talanta 2015; 144:98-104. [DOI: 10.1016/j.talanta.2015.05.077] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 05/23/2015] [Accepted: 05/28/2015] [Indexed: 12/17/2022]
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43
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Moawed E, Abulkibash A, El-Shahat M. Synthesis of tannic acid azo polyurethane sorbent and its application for extraction and determination of atrazine and prometryn pesticides in foods and water samples. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.enmm.2015.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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44
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Wang J, Gao L, Han D, Pan J, Qiu H, Li H, Wei X, Dai J, Yang J, Yao H, Yan Y. Optical detection of λ-cyhalothrin by core-shell fluorescent molecularly imprinted polymers in Chinese spirits. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:2392-2399. [PMID: 25632984 DOI: 10.1021/jf5043823] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, fluorescent molecularly imprinted polymers (FMIPs), which were for the selective recognition and fluorescence detection of λ-cyhalothrin (LC), were synthesized via fluorescein 5(6)-isothiocyanate (FITC) and 3-aminopropyltriethoxysilane (APTS)/SiO2 particles. The SiO2@FITC-APTS@MIPs were characterized by Fourier transform infrared (FT-IR), UV-vis spectrophotometer (UV-vis), fluorescence spectrophotometer, thermogravimetric analysis (TGA), confocal laser scanning microscope (CLSM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The as-synthesized SiO2@FITC-APTS@MIPs with an imprinted polymer film (thickness was about 100 nm) was demonstrated to be spherically shaped and had good monodispersity, high fluorescence intensity, and good selective recognition. Using fluorescence quenching as the detection tool, the largest fluorescence quenching efficiency (F0/F - 1) of SiO2@FITC-APTS@MIPs is close to 2.5 when the concentration of the LC is 1.0 μM L(-1). In addition, a linear relationship (F0/F - 1= 0.0162C + 0.0272) could be obtained covering a wide concentration range of 0-60 nM L(-1) with a correlation coefficient of 0.9968 described by the Stern-Volmer equation. Moreover, the limit of detection (LOD) of the SiO2@FITC-APTS@MIPs was 9.17 nM L(-1). The experiment results of practical detection revealed that the SiO2@FITC-APTS@MIPs as an attractive recognition element was satisfactory for the determination of LC in Chinese spirits. Therefore, this study demonstrated the potential of SiO2@FITC-APTS@MIPs for the recognition and detection of LC in food.
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Affiliation(s)
- Jixiang Wang
- School of Chemistry and Chemical Engineering and ‡School of Material Science and Engineering, Jiangsu University , Zhenjiang 212013, People's Republic of China
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45
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Molina-Ruiz JM, Cieslik E, Cieslik I, Walkowska I. Determination of pesticide residues in fish tissues by modified QuEChERS method and dual-d-SPE clean-up coupled to gas chromatography-mass spectrometry. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:369-378. [PMID: 25074831 DOI: 10.1007/s11356-014-3361-2] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 07/17/2014] [Indexed: 06/03/2023]
Abstract
The aim of this research was to modify the Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) method for the determination of organochlorine and organophosphate pesticides in fatty animal matrices such as fish muscle tissues of carp and sturgeon collected from Carp Valley, Lesser Poland. Pesticides extraction effectiveness was evaluated at 0.030 mg kg(-1) spiking level and efficiency of the dispersive-solid-phase extraction (d-SPE) clean-up step was evaluated by comparison testing two different d-SPE clean-up stages, first the addition of the d-SPE sorbent combination (PSA + SAX + NH2), and secondly the addition of C18 after extracts enrichment with the d-SPE sorbent combination (PSA + SAX + NH2), introducing a novel concept of clean-up named dual-d-SPE clean-up. Analysis of pesticide residues was performed by Gas Chromatography Quadrupole Mass Spectrometry (GC/Q-MS) working in selected-ion monitoring (SIM) mode. Linear relation was observed from 0 to 200 ng mL(-1) and determination coefficient R(2) > 0.997 in all instances for all target analytes. Better recoveries and cleanliness of extracts in both samples, carp and sturgeon tissues, were obtained after C18 addition during the dual-d-SPE clean-up step. Recoveries were in the range 70-120%, with relative standard deviation lower than 10% at 0.030 mg kg(-1) spiking level for most pesticides. LODs ranged 0.001-0.003 mg kg(-1), while LOQs ranged 0.004-0.009 mg kg(-1). The proposed method was successfully applied analyzing pesticide residues in real carp and sturgeon muscle samples; detectable pesticide residues were observed, but in all of the cases contamination level was lower than the default maximum residue levels (MRLs) set by the European Union (EU), Regulation (EC) N 396/2005.
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Affiliation(s)
- Juan Manuel Molina-Ruiz
- Malopolska Centre of Food Monitoring, Faculty of Food Technology, University of Agriculture in Krakow, 122 Balicka St, 30-149, Krakow, Poland,
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46
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Farajzadeh MA, Khoshmaram L, Nabil AAA. Determination of pyrethroid pesticides residues in vegetable oils using liquid–liquid extraction and dispersive liquid–liquid microextraction followed by gas chromatography–flame ionization detection. J Food Compost Anal 2014. [DOI: 10.1016/j.jfca.2014.03.004] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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47
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A simplified procedure for the determination of organochlorine pesticides and polychlorobiphenyls in edible vegetable oils. Food Chem 2014; 151:47-52. [DOI: 10.1016/j.foodchem.2013.11.047] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 10/29/2013] [Accepted: 11/10/2013] [Indexed: 11/24/2022]
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48
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Mukdasai S, Thomas C, Srijaranai S. Two-step microextraction combined with high performance liquid chromatographic analysis of pyrethroids in water and vegetable samples. Talanta 2014; 120:289-96. [DOI: 10.1016/j.talanta.2013.12.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 12/02/2013] [Accepted: 12/03/2013] [Indexed: 10/25/2022]
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