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Zanchin CF, Floriano L, de Farias BS, Pinto LAA, Cadaval TRS, Prestes OD, Zanella R. Carbon nanotubes stabilized in chitosan sponge (CNT-CS) as a new alternative clean-up sorbent for pesticide multiresidue determination in eggplants using QuEChERS and UHPLC-MS/MS. Anal Bioanal Chem 2025:10.1007/s00216-025-05736-z. [PMID: 39838101 DOI: 10.1007/s00216-025-05736-z] [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: 08/01/2024] [Revised: 01/03/2025] [Accepted: 01/07/2025] [Indexed: 01/23/2025]
Abstract
The continuous development and application of pesticides in agriculture require robust multiresidue detection methods to guarantee food safety. This study introduces a novel method for multiresidue determination of pesticides in eggplants using the QuEChERS procedure, incorporating a clean-up step using carbon nanotubes stabilized in chitosan sponge (CNT-CS) and ultra-high performance liquid chromatography with tandem mass spectrometry (UHPLC-MS/MS) for analysis. Upon identifying the optimal extraction conditions, various sorbents were assessed for their efficacy in the dispersive solid-phase extraction (d-SPE). Among these, the biosorbent CNT-CS emerged as the most efficient and cost-effective material, showing the best recovery results from spiked blank samples. The validation demonstrated that the method was adequate for analyzing 111 pesticides in eggplant samples with practical method quantification limits from 5 to 25 µg kg-1. When applied to commercial eggplant samples, 27 pesticides were detected, demonstrating the importance of the proposed method. It is noteworthy that the conducted work represents the first report on the use of the biosorbent CNT-CS in the clean-up step of the QuEChERS method. The results obtained in the validation and application steps demonstrate that the proposed method is an excellent alternative for monitoring programs.
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Affiliation(s)
- Cleusa F Zanchin
- Laboratory of Pesticide Residues Analysis (LARP), Chemistry Department, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | - Luana Floriano
- Laboratory of Pesticide Residues Analysis (LARP), Chemistry Department, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | - Bruna S de Farias
- School of Chemistry and Food, Federal University of Rio Grande (FURG), Rio Grande, RS, 96230-000, Brazil
| | - Luiz A A Pinto
- School of Chemistry and Food, Federal University of Rio Grande (FURG), Rio Grande, RS, 96230-000, Brazil
| | - Tito R S Cadaval
- School of Chemistry and Food, Federal University of Rio Grande (FURG), Rio Grande, RS, 96230-000, Brazil
| | - Osmar D Prestes
- Laboratory of Pesticide Residues Analysis (LARP), Chemistry Department, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil
| | - Renato Zanella
- Laboratory of Pesticide Residues Analysis (LARP), Chemistry Department, Federal University of Santa Maria (UFSM), Santa Maria, RS, 97105-900, Brazil.
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2
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Zhou R, Wen Y, Huo W, Kong C, Yang G, Liu H, Zhang C, Mu Y, Huang D, Li J. Eco-friendly chitosan microspheres as a novel one-step sorbent for the rapid purification and determination of pesticides and veterinary drug multi-residues in aquatic products with HPLC-MS/MS. Food Chem 2025; 462:140860. [PMID: 39213964 DOI: 10.1016/j.foodchem.2024.140860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 08/09/2024] [Accepted: 08/11/2024] [Indexed: 09/04/2024]
Abstract
A modified QuEChERS method was developed to determine multi-class pesticide and veterinary residues in aquatic products. Chitosan microspheres were conveniently synthesized and utilized as the cleanup adsorbent in the QuEChERS procedure, showcasing rapid filtration one-step pretreatment ability for the determination of drug multi-residues in aquatic products. Compared to conventional synthetic sorbents, chitosan microspheres not only have good purification performance, but also have renewable and degradable properties. This novel sorbent worked well in the simultaneous determination of 95 pesticides and veterinary drug residues in aquatic products after being combined with an improved one-step vortex oscillating cleanup method. We achieved recoveries ranging from 64.0% to 115.9% for target drugs in shrimp and fish matrix. The limits of detection and quantification were 0.5-1.0 and 1.0-2.0 μg kg-1, respectively. Notably, hydrocortisone was detected with considerable frequency and concentration in the tested samples, underscoring the necessity for stringent monitoring of this compound in aquatic products.
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Affiliation(s)
- Ruidong Zhou
- Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of agriculture and rural affairs, Beijing 100141, PR China
| | - Yupeng Wen
- Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of agriculture and rural affairs, Beijing 100141, PR China
| | - Wendi Huo
- Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of agriculture and rural affairs, Beijing 100141, PR China
| | - Cong Kong
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of agriculture and rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
| | - Guangxin Yang
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of agriculture and rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
| | - Huan Liu
- Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of agriculture and rural affairs, Beijing 100141, PR China
| | - Chaoying Zhang
- Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of agriculture and rural affairs, Beijing 100141, PR China
| | - Yingchun Mu
- Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of agriculture and rural affairs, Beijing 100141, PR China
| | - Dongmei Huang
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of agriculture and rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
| | - Jincheng Li
- Chinese Academy of Fishery Sciences, Beijing 100141, PR China; Key Laboratory of Control of Quality and Safety for Aquatic Products, Ministry of agriculture and rural affairs, Beijing 100141, PR China.
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Teixeira AM, De Queiroz MELR, Rodrigues AAZ, de Oliveira AF, Libardi VM, de Freitas JF. Determination of pesticide residues in oat flour using low-temperature partition extraction and GC-MS analysis. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2024; 61:2402-2410. [PMID: 39431188 PMCID: PMC11486861 DOI: 10.1007/s13197-024-06006-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/10/2024] [Accepted: 05/16/2024] [Indexed: 10/22/2024]
Abstract
A simple method based on solid-liquid extraction with a low-temperature partition (SLE/LTP) and analysis by gas chromatography coupled to mass spectrometry (GC-MS) was optimized and validated for determining residues of the pesticides triadimenol, flutriafol, λ-cyhalothrin, difenoconazole, and azoxystrobin in oat flour. A factorial design was employed to optimize the technique and establish the best conditions for the simultaneous extraction of the analytes. Acetonitrile-sample extraction and its 4 h freezing made it possible to recover the pesticides and clean the extracts in a single step. The limit of detection ranged from 1.72 to 12.9 μg kg-1, and the limit of quantification from 5.73 to 43.0 μg kg-1. These values are below the maximum residue limit (MRL) permitted by National legislation. The recovery percentage fell between 91.7 and 108%, with coefficients of variation under 12%. The validated method was applied to oat flour samples randomly acquired from the local market of Viçosa (Minas Gerais, Brazil) and no residues were detected. The SLE/LTP-GC-MS method proved simple, efficient, selective, and sensitive for determining pesticide residues from oat flour samples, offering a more simplified approach compared to techniques described in the literature. Supplementary Information The online version contains supplementary material available at 10.1007/s13197-024-06006-z.
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Affiliation(s)
| | | | - Alessandra A. Z. Rodrigues
- Department of Chemistry, Universidade Federal de Viçosa, Viçosa, MG Brazil
- Department of Agricultural Engineering, Universidade Federal de Viçosa, Viçosa, MG Brazil
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Assessment of pesticide residues contamination in cereals and pseudo-cereals marketed in the Canary Islands. Food Chem 2023; 400:134089. [DOI: 10.1016/j.foodchem.2022.134089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 07/08/2022] [Accepted: 08/29/2022] [Indexed: 11/21/2022]
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Jiang G, Ibrahim MS, Ibrahim MK, Zhao C, Butt M, Ameer K, Ahmad A, Mumtaz A, Anjum Murtaza M, Ahmed Khalil A, Asad MJ, Khan MA. Profiling and characterization of oat cultivars (Avena sativa L.) with respect to bioactive compounds, pesticide residues and mycotoxin. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2021. [DOI: 10.1080/10942912.2021.1954658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Guihun Jiang
- School of Public Health, Jilin Medical University, Jilin, 132013, China
| | - Muhammad Suhail Ibrahim
- Institute of Food and Nutritional Sciences. PMAS-Arid Agriculture University Rawalpindi, Shamsabad, Murree Road Rawalpindi 46000, Pakistan
| | | | - Chen Zhao
- School of Public Health, Jilin Medical University, Jilin, 132013, China
| | - Madiha Butt
- College of Agriculture, Bahauddin Zakariya University Bahadur Sub Campus, Layyah 31200, Pakistan
| | - Kashif Ameer
- Institute of Food Science and Nutrition, University of Sargodha, Sargodha 40100, Pakistan
| | - Asif Ahmad
- Institute of Food and Nutritional Sciences. PMAS-Arid Agriculture University Rawalpindi, Shamsabad, Murree Road Rawalpindi 46000, Pakistan
| | - Amer Mumtaz
- Food Science & Product Development Institute, National Agricultural Research Centre, Islamabad 44000, Pakistan
| | - Mian Anjum Murtaza
- Institute of Food Science and Nutrition, University of Sargodha, Sargodha 40100, Pakistan
| | - Anees Ahmed Khalil
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Lahore 54000, Pakistan
| | - Muhammad Javaid Asad
- University Institute of Biochemistry and Biotechnology, PMAS-Arid Agriculture University Rawalpindi, Shamsabad, Murree Road Rawalpindi 46000, Pakistan
- National Institute of Industrial Biotechnology, PMAS-Arid Agriculture University Rawalpindi, Shamsabad, Murree Road Rawalpindi 46000, Pakistan
| | - Muhammad Azam Khan
- Department of Horticulture, PMAS-Arid Agriculture University Rawalpindi, Shamsabad, Murree Road Rawalpindi 46000, Pakistan
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Development of a Modified QuEChERS Procedure for the Isolation of Pesticide Residues from Textile Samples, Followed by GC–MS Determination. SEPARATIONS 2021. [DOI: 10.3390/separations8080106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Due to the use of pesticides during cotton production and/or textile storage, it is necessary to assure textile and clothing safety in order to improve the protection of human health. In this work, an efficient method was established for a multiresidue determination of 33 pesticides covering several pesticide classes such as organochlorine, organophosphate, pyrethroides, triazines, etc., in textiles by modified QuEChERS and followed by gas chromatography–mass spectrometry. Optimal conditions were selected, including the amount of the sample, type of the extraction solvent and cleaning up sorbents, until the method was finally validated. Sufficient accuracy and precision were presented by the method using spiked samples between 10 and 250 μg/kg, while recoveries from 70 to 120% and an RSD < 20% for all the pesticides were obtained; the limits of quantification were below 5 μg/kg for all studied pesticides. The presented method showed high separation efficiency with minimal sample and sorbent consumption. The validated method was successfully applied to the analysis of real samples and proved to be applicable to routine analyses.
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EL-Saeid MH, Hassanin AS, Bazeyad AY, Al-Otaibi MT. Rapid analytical method for the determination of 220 pesticide with their isomers by GCMS-TIC. Saudi J Biol Sci 2021; 28:4173-4182. [PMID: 34354397 PMCID: PMC8325007 DOI: 10.1016/j.sjbs.2021.05.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/23/2021] [Accepted: 05/11/2021] [Indexed: 11/26/2022] Open
Abstract
This paper presents a cost-effective and validated multi residue modified and miniaturized method for the determination of 220 chemically different groups of pesticides and their isomers. This determination method is performed with single Quaid Gas Chromatography Mass Spectrometry -Total Ion Chromatogram GCMS-TIC. Two methods was experimented and modified with different GCMS parameters to analyses most common used pesticide and their residues in the standers solution and can be applied for real environmental samples. The results showed by single Quaid GCMS-TIC it can analyze 220 pesticides including their isomers within 49.6 min and low detection limit by using modified method 2 as described in this research. Limit of detection (LOD) was ranged from 0.78 to 14.74 ng/ml (ppb) with good separation and resolution. Limit of quantification (LOQ) was ranged between 2.34 and 44.22 ng/ml (ppb). Method 2 was more accurate, shorter, and clear separation rather than method 1. This method can be successfully applied in real environmental samples proven to be a good option for routine analysis of pesticide within the maximum residue limits (MRL) referenced to European commission especially with the most common GCMS-TIC which exists in most of labs and low income countries.
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Affiliation(s)
- Mohamed H. EL-Saeid
- Chromatographic Analysis Unit, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
- Corresponding author at: Chromatographic Analysis Unit, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
| | - Ashraf S. Hassanin
- Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Abdulqader Y. Bazeyad
- Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Mubarak T. Al-Otaibi
- Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
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Stringhini FM, Ribeiro LC, Rocha GI, de B. Kuntz JD, Zanella R, Prestes OD, Adaime MB. Dilution of QuEChERS Extracts Without Cleanup Improves Results in the UHPLC-MS/MS Multiresidue Analysis of Pesticides in Tomato. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-020-01921-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Wu L, Zhou M, Liu C, Chen X, Chen Y. Double-enzymes-mediated Fe 2+/Fe 3+ conversion as magnetic relaxation switch for pesticide residues sensing. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123619. [PMID: 32827859 DOI: 10.1016/j.jhazmat.2020.123619] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 05/25/2023]
Abstract
It is a great challenge to develop a newly rapid and accurate detection method for pesticide residues. In this work, based on acetylcholinesterase (AChE) and choline oxidase (CHO), a double-enzymes-mediated Fe2+/Fe3+ conversion as magnetic relaxation switch was explored for the measurement of acetamiprid residue. In the double-enzymes reactions, acetylcholine chloride (ACh) can be catalyzed to produce choline by AChE, which is successively hydrolyzed to betaine and hydrogen peroxide (H2O2) by CHO. According to the enzyme inhibition principle, AChE activity will be inactivated in the presence of acetamiprid, thus leading to the less production of H2O2. Wherein, Fe2+, ACh, AChE and CHO were optimized as the reaction substrates. In the reaction system, acetamiprid can be reflected by the transverse relaxation time (T2) that related with H2O2 mediated Fe2+ variations, which was further developed as an enzyme cascade amplification method. The detection linear range is 0.01∼1000 μg mL-1 (R2 = 0.99), and the limit of detection (LOD) is 2.66 ng mL-1 (S/N = 3, n = 3), behaving a 335-fold improvement in LOD than that of traditional enzyme inhibition method (0.89 μg mL-1). This method can realize "one-step mixing" detection of acetamiprid, which makes it a promising analytical tool for monitoring pesticide residue in complicated samples.
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Affiliation(s)
- Long Wu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, PR China; National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), College of Bioengineering and Food, Hubei University of Technology, Wuhan, Hubei, 430068, PR China
| | - Min Zhou
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, PR China; National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), College of Bioengineering and Food, Hubei University of Technology, Wuhan, Hubei, 430068, PR China
| | - Chen Liu
- Leibniz Institute of Photonic Technology, Jena-Member of the research alliance Leibniz Health Technologies, Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Albert-Einstein-Street 9, 07745, Jena, Germany; Leibniz Institute of Photonic Technology Jena - Member of the research alliance, Leibniz Health Technologies, Albert-Einstein-Str. 9, 07745, Jena, Germany
| | - Xiaoqiang Chen
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Key Laboratory of Fermentation Engineering (Ministry of Education), College of Bioengineering and Food, Hubei University of Technology, Wuhan, Hubei, 430068, PR China.
| | - Yiping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, PR China.
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Li C, Begum A, Xue J. Analytical methods to analyze pesticides and herbicides. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:1770-1785. [PMID: 32762111 DOI: 10.1002/wer.1431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/10/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
This paper reviews studies published in 2019, in the area of analytical techniques for determination of pesticides and herbicides. It should be noted that some of the reports summarized in this review are not directly related to but could potentially be used for water environment studies. Based on different methods, the literatures are organized into six sections, namely extraction methods, electrochemical techniques, spectrophotometric techniques, chemiluminescence and fluorescence methods, chromatographic and mass spectrometric techniques, and biochemical assays. PRACTITIONER POINTS: Totally 141 research articles have been summarized. The review is divided into six parts. Chromatographic and mass spectrometric techniques are the most widely used methods.
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Affiliation(s)
- Chao Li
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, China
| | - Afruza Begum
- Environmental Systems Engineering, Faculty of Engineering and Applied Science, University of Regina, Regina, Canada
| | - Jinkai Xue
- Environmental Systems Engineering, Faculty of Engineering and Applied Science, University of Regina, Regina, Canada
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11
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Zhu Y, Du P, Yang J, Yin Q, Yang Y. Screening of multiclass pesticide residues in maca and Moringa oleifera by a modified QuEChERS sample preparation procedure and UPLC-ESI-MS/MS analysis. RSC Adv 2020; 10:36906-36919. [PMID: 35517969 PMCID: PMC9057067 DOI: 10.1039/d0ra06375d] [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] [Received: 07/22/2020] [Accepted: 09/17/2020] [Indexed: 11/26/2022] Open
Abstract
In the present study, a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method was proposed for the simultaneous analysis of 75 pesticides in maca and Moringa oleifera with ultra-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (UPLC-ESI-MS/MS). The developed method was validated in accordance with linearity, linear range, limit of detection, limit of quantification, accuracy, precision, and matrix effect. Each analyte had good linearity (R2 > 0.99) in the corresponding concentration range. The method LOD and LOQ values of all the analytes ranged from 0.01 μg kg−1 to 303.35 μg kg−1 and 0.03 μg kg−1 to 1011.15 μg kg−1, respectively. The recoveries (n = 6) of the analyzed pesticides were in the range of 75.92–113.43%. The RSDs of precision were between 0.60% and 7.36%. All matrix effect values ranged from 81.79% to 118.71% and 80.36% to 119.64% in maca and Moringa oleifera, respectively. The analysis of 103 samples showed the presence of isofenphos-methyl in some of them. The method had a good application prospect and could be used as a general approach for the quantitative determination of pesticide residues in food. In the present study, a modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method was proposed for the simultaneous analysis of 75 pesticides in maca and Moringa oleifera with UPLC-ESI-MS/MS.![]()
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Affiliation(s)
- Yanqin Zhu
- Research Center for Analysis and Measurement, Kunming University of Science and Technology Kunming 650093 China +86-87165113971 +86-87165113971.,Analysis and Test Center of Yunnan Province Kunming 650093 China.,Faculty of Life Science and Technology, Kunming University of Science and Technology Kunming 650500 China
| | - Ping Du
- Research Center for Analysis and Measurement, Kunming University of Science and Technology Kunming 650093 China +86-87165113971 +86-87165113971.,Analysis and Test Center of Yunnan Province Kunming 650093 China
| | - Jun Yang
- Research Center for Analysis and Measurement, Kunming University of Science and Technology Kunming 650093 China +86-87165113971 +86-87165113971.,Analysis and Test Center of Yunnan Province Kunming 650093 China
| | - Qinhong Yin
- Faculty of Narcotics Control, Yunnan Police College Kunming 650223 China
| | - Yaling Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology Kunming 650500 China
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12
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Ni P, Liu L, Hao C, Xu X, Song S, Kuang H, Xu C. Rapid and Sensitive Immunochromatographic Method-Based Monoclonal Antibody for the Quantitative Detection of Metalaxyl in Tobacco. ACS OMEGA 2020; 5:18168-18175. [PMID: 32743191 PMCID: PMC7392375 DOI: 10.1021/acsomega.0c01782] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/12/2020] [Indexed: 05/04/2023]
Abstract
In this study, we prepared a monoclonal antibody (mAb) against metalaxyl (Met) with a half-maximum inhibitory concentration (IC50) of 0.54 ng/mL based on a new hapten, and a gold nanoparticle-based immunochromatographic assay (GICA) was developed for the rapid detection of Met residues in tobacco. Under optimal conditions, even with the naked eye, one can see the semiquantitative analysis results. The naked eye detection limit of Met in tobacco is 25 μg/kg, and the detection threshold is 100 μg/kg. In addition, the cross-reactivity test shows that the mAb has good specificity for Met, and the GICA results have a good correlation with the indirect competitive enzyme-linked immunosorbent assay and liquid chromatography with tandem mass spectrometry test results, which show that the method is feasible and reliable and are more convenient and quicker than the methods using instrumentation for detection. Therefore, GICA may provide a useful tool for the rapid screening and detection of Met residues in tobacco.
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Sadat SAA, Ilbeigi V, Valadbeigi Y, Soleimani M. Determination of pesticides phosalone and diazinon in pistachio using ion mobility spectrometry. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s12127-020-00262-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Modified QuEChERS Method for Multiresidue Determination of Pesticides in Pecan Nuts by Liquid Chromatography Tandem Mass Spectrometry. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-019-01696-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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