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Liu S, Zhou J, Yuan X, Xiong J, Zong MH, Wu X, Lou WY. A dual-mode sensing platform based on metal-organic framework for colorimetric and ratiometric fluorescent detection of organophosphorus pesticide. Food Chem 2024; 432:137272. [PMID: 37657347 DOI: 10.1016/j.foodchem.2023.137272] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/11/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023]
Abstract
Pesticide residues have raised considerable concern about environmental health and food safety. Despite a great advance in enzymatic sensors for pesticide detection, the intrinsic fragility of native enzyme and possible fake results due to single mode signal have hindered its wide application. Here, a novel dual-mode sensor is reported for organophosphorus pesticide detection by using metal-organic framework (MOF) nanozyme NH2-CuBDC as sensing element. The intrinsic peroxidase-mimicking activity and fluorescence property of NH2-CuBDC enable both colorimetric and fluorescent detection of chlorpyrifos. Compared with previously reported chlorpyrifos sensors, our sensor exhibits outstanding sensitivity, and the limits of detection (LOD, S/N = 3) in colorimetric and fluorescent modes are 1.57 ng/mL and 2.33 ng/mL, respectively. No obvious interferences from other substances were measured and chlorpyrifos analysis in real samples presented good reliability, showing practical potential. This work is anticipated to provide new insights to develop multifunctional nanozymes and integrated multi-mode sensing platforms.
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Affiliation(s)
- Shuli Liu
- Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong 510640, China
| | - Jintao Zhou
- Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong 510640, China
| | - Xin Yuan
- Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong 510640, China
| | - Jun Xiong
- Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong 510640, China
| | - Min-Hua Zong
- Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong 510640, China
| | - Xiaoling Wu
- Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong 510640, China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, No. 381 Wushan Road, Guangzhou 510640, Guangdong, China.
| | - Wen-Yong Lou
- Lab of Applied Biocatalysis, School of Food Science and Engineering, South China University of Technology, No. 381 Wushan Road, Guangzhou, Guangdong 510640, China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, No. 381 Wushan Road, Guangzhou 510640, Guangdong, China.
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Saegusa H, Nomura H, Takao M, Hamaguchi T, Yoshida M, Kodama Y. Development and validation of an analysis method for pesticide residues by gas chromatography-tandem mass spectrometry in Daikenchuto. J Nat Med 2021; 75:344-360. [PMID: 33389591 PMCID: PMC7902578 DOI: 10.1007/s11418-020-01473-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 11/24/2020] [Indexed: 11/24/2022]
Abstract
Daikenchuto (DKT) is one of the most widely used “Kampo” in Japan as a representative of herbal medicine. Because DKT is made from a natural product like food, it requires the management of pesticides; therefore, an analysis of residual pesticides in Kampo is required. The World Health Organization (WHO) indicates that pesticide residue analysis by the U.S. Pharmacopeia (USP) is required. USP defines 107 compounds containing organochlorine pesticides and organophosphorus pesticides and their metabolites, which have a high residual risk. Accordingly, to guarantee the safety of herbal medicines according to global standards is a very important issue. In this study, we developed an analytical method for 91 compounds, which are listed in USP, using DKT as the subject. The method could extract pesticides from DKT with acetone, elute pesticides with acetonitrile using a SepPak C18 column (5 g) and with ethyl acetate using a DSC-NH2 column (2 g), and perform simultaneous analyses by gas chromatography–tandem mass spectrometry (GC–MS/MS). This method, which could quantify 88 compounds, was validated according to USP. A pesticide residue analysis method that meets USP requirements enables the analysis of pesticide residues with a high residue risk and contributes to improving the safety of “Kampo” and other herbal medicines.
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Affiliation(s)
- Hirokazu Saegusa
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan. .,CMC Research and Development Laboratories, Tsumura and Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki, 300-1192, Japan.
| | - Hiroshi Nomura
- CMC Research and Development Laboratories, Tsumura and Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki, 300-1192, Japan
| | - Masaki Takao
- CMC Research and Development Laboratories, Tsumura and Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki, 300-1192, Japan
| | - Takashi Hamaguchi
- CMC Research and Development Laboratories, Tsumura and Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki, 300-1192, Japan
| | - Masaru Yoshida
- Division of Metabolomics Research, Department of Internal Medicine Related, Kobe University Graduate School Medicine, 7-5-1 Kusunoki-Cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yuzo Kodama
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-Cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
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Kurz MHS, da S. Batista JL, de Oliveira LG, Hoff R, Martins ML, Gonçalves FF. Clean-up Procedure Development and Method Validation for Pesticide Residues Analysis in Carrots. FOOD ANAL METHOD 2018. [DOI: 10.1007/s12161-018-1359-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Trace analysis of multi-class pesticide residues in Chinese medicinal health wines using gas chromatography with electron capture detection. Sci Rep 2016; 6:21558. [PMID: 26883080 PMCID: PMC4756289 DOI: 10.1038/srep21558] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 01/27/2016] [Indexed: 01/19/2023] Open
Abstract
A method is described for multi-residue, high-throughput determination of trace levels of 22 organochlorine pesticides (OCPs) and 5 pyrethroid pesticides (PYPs) in Chinese medicinal (CM) health wines using a QuEChERS (quick, easy, cheap, effective, rugged, and safe) based extraction method and gas chromatography-electron capture detection (GC-ECD). Several parameters were optimized to improve preparation and separation time while still maintaining high sensitivity. Validation tests of spiked samples showed good linearities for 27 pesticides (R = 0.9909-0.9996) over wide concentration ranges. Limits of detection (LODs) and quantification (LOQs) were measured at ng/L levels, 0.06-2 ng/L and 0.2-6 ng/L for OCPs and 0.02-3 ng/L and 0.06-7 ng/L for PYPs, respectively. Inter- and intra-day precision tests showed variations of 0.65-9.89% for OCPs and 0.98-13.99% for PYPs, respectively. Average recoveries were in the range of 47.74-120.31%, with relative standard deviations below 20%. The developed method was then applied to analyze 80 CM wine samples. Beta-BHC (Benzene hexachloride) was the most frequently detected pesticide at concentration levels of 5.67-31.55 mg/L, followed by delta-BHC, trans-chlordane, gamma-BHC, and alpha-BHC. The validated method is simple and economical, with adequate sensitivity for trace levels of multi-class pesticides. It could be adopted by laboratories for this and other types of complex matrices analysis.
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Santilio A, Girolimetti S, Barbini DA. Estimation of the validation parameters for a fast analysis of herbicide residues by LC-MS/MS. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:845-51. [DOI: 10.1080/19440049.2014.891296] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Combination of a short middle-bore capillary column with a thicker stationary phase and a short narrow-bore separation column with a thinner stationary phase for the rapid screening of non-volatile drugs by gas chromatography–mass spectrometry. Forensic Toxicol 2012. [DOI: 10.1007/s11419-012-0164-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Matisová E, Hrouzková S. Analysis of endocrine disrupting pesticides by capillary GC with mass spectrometric detection. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2012; 9:3166-96. [PMID: 23202677 PMCID: PMC3499860 DOI: 10.3390/ijerph9093166] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 07/24/2012] [Accepted: 08/21/2012] [Indexed: 11/19/2022]
Abstract
Endocrine disrupting chemicals, among them many pesticides, alter the normal functioning of the endocrine system of both wildlife and humans at very low concentration levels. Therefore, the importance of method development for their analysis in food and the environment is increasing. This also covers contributions in the field of ultra-trace analysis of multicomponent mixtures of organic pollutants in complex matrices. With this fact conventional capillary gas chromatography (CGC) and fast CGC with mass spectrometric detection (MS) has acquired a real importance in the analysis of endocrine disrupting pesticide (EDP) residues. This paper provides an overview of GC methods, including sample preparation steps, for analysis of EDPs in a variety of matrices at ultra-trace concentration levels. Emphasis is put on separation method, mode of MS detection and ionization and obtained limits of detection and quantification. Analysis time is one of the most important aspects that should be considered in the choice of analytical methods for routine analysis. Therefore, the benefits of developed fast GC methods are important.
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Affiliation(s)
- Eva Matisová
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 81237 Bratislava, Slovak Republic.
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Chary NS, Herrera S, Gómez MJ, Fernández-Alba AR. Parts per trillion level determination of endocrine-disrupting chlorinated compounds in river water and wastewater effluent by stir-bar-sorptive extraction followed by gas chromatography–triple quadrupole mass spectrometry. Anal Bioanal Chem 2012; 404:1993-2006. [DOI: 10.1007/s00216-012-6251-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 06/19/2012] [Accepted: 07/05/2012] [Indexed: 10/28/2022]
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9
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SHI JW, ZHAO YG, FU ZJ, LI JG, WANG YF, YANG TC. Development of a Screening Method for the Determination of PCBs in Water Using QuEChERS Extraction and Gas Chromatography-Triple Quadrupole Mass Spectrometry. ANAL SCI 2012; 28:167-73. [DOI: 10.2116/analsci.28.167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jia-Wei SHI
- Ningbo Key Laboratory of Poison Research and Control, Ningbo Municipal Center for Disease Control and Prevention
| | - Yong-Gang ZHAO
- Ningbo Key Laboratory of Poison Research and Control, Ningbo Municipal Center for Disease Control and Prevention
| | | | - Ji-Ge LI
- Ningbo Key Laboratory of Poison Research and Control, Ningbo Municipal Center for Disease Control and Prevention
| | - Yu-Fei WANG
- Ningbo Key Laboratory of Poison Research and Control, Ningbo Municipal Center for Disease Control and Prevention
| | - Tian-Chi YANG
- Ningbo Key Laboratory of Poison Research and Control, Ningbo Municipal Center for Disease Control and Prevention
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10
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Du G, Song Y, Wang Y. Rapid simultaneous determination of multiple pesticide residues in traditional Chinese medicines using programmed temperature vaporizer injection-fast gas chromatography coupled with mass spectrometry. J Sep Sci 2011; 34:3372-82. [DOI: 10.1002/jssc.201100712] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 08/24/2011] [Accepted: 09/06/2011] [Indexed: 11/11/2022]
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11
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Botitsi HV, Garbis SD, Economou A, Tsipi DF. Current mass spectrometry strategies for the analysis of pesticides and their metabolites in food and water matrices. MASS SPECTROMETRY REVIEWS 2011; 30:907-939. [PMID: 24737632 DOI: 10.1002/mas.20307] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Analysis of pesticides and their metabolites in food and water matrices continues to be an active research area closely related to food safety and environmental issues. This review discusses the most widely applied mass spectrometric (MS) approaches to pesticide residues analysis over the last few years. The main techniques for sample preparation remain solvent extraction and solid-phase extraction. The QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) approach is being increasingly used for the development of multi-class pesticide residues methods in various sample matrices. MS detectors-triple quadrupole (QqQ), ion-trap (IT), quadrupole linear ion trap (QqLIT), time-of-flight (TOF), and quadrupole time-of-flight (QqTOF)-have been established as powerful analytical tools sharing a primary role in the detection/quantification and/or identification/confirmation of pesticides and their metabolites. Recent developments in analytical instrumentation have enabled coupling of ultra-performance liquid chromatography (UPLC) and fast gas chromatography (GC) with MS detectors, and faster analysis for a greater number of pesticides. The newly developed "ambient-ionization" MS techniques (e.g., desorption electrospray ionization, DESI, and direct analysis in real time, DART) hyphenated with high-resolution MS platforms without liquid chromatography separation, and sometimes with minimum pre-treatment, have shown potential for pesticide residue screening. The recently introduced Orbitrap mass spectrometers can provide high resolving power and mass accuracy, to tackle complex analytical problems involved in pesticide residue analysis.
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Affiliation(s)
- Helen V Botitsi
- General Chemical State Laboratory, Pesticide Residues Laboratory, 16 An. Tsocha Street, Athens 115 21, Greece
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12
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Viñas P, Martínez-Castillo N, Campillo N, Hernández-Córdoba M. Liquid–liquid microextraction methods based on ultrasound-assisted emulsification and single-drop coupled to gas chromatography–mass spectrometry for determining strobilurin and oxazole fungicides in juices and fruits. J Chromatogr A 2010; 1217:6569-77. [DOI: 10.1016/j.chroma.2010.08.046] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Revised: 08/15/2010] [Accepted: 08/18/2010] [Indexed: 11/30/2022]
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13
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Gärtner S, Balski M, Koch M, Nehls I. Analysis and migration of phthalates in infant food packed in recycled paperboard. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:10675-10681. [PMID: 19877638 DOI: 10.1021/jf902683m] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The contamination of infant food with substances from its packaging due to migration processes is still a problem. Most recently, great attention was paid to the migration of epoxidized soybean oil (ESBO) and phthalates from twist-off closures into baby food packed in glass jars. Besides, packaging made of recycled fiber materials such as paper and paperboard were found to be the source of contaminants in dry and powdery foodstuffs such as sugar, rice, and maize flour. In this study 20 infant food samples packed in recycled paperboard containers were tested for phthalates and diisopropyl naphthalenes (DIPN), known incorporated substances in recycled paper. Furthermore, the barrier function of different secondary packaging materials (paper and aluminum-coated foil) was investigated. The highest contents of phthalates (mainly diisobutyl phthalate, DiBP) and DIPN in infant food samples were found for those foods packed in inner bags made of paper. Migration experiments were performed under authentic conditions to evaluate possible transfer mechanism (gas phase, direct contact) of phthalate esters into foodstuff. It is shown that paper does not provide an appropriate barrier against migration of semipolar compounds such as phthalates. The air space itself otherwise effectively prevents migration of the less volatile phthalates under the applied conditions.
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Affiliation(s)
- Sonja Gärtner
- BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
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14
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Hayward DG, Wong JW. Organohalogen and Organophosphorous Pesticide Method for Ginseng Root — A Comparison of Gas Chromatography-Single Quadrupole Mass Spectrometry with High Resolution Time-of-Flight Mass Spectrometry. Anal Chem 2009; 81:5716-23. [DOI: 10.1021/ac900494a] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Douglas G. Hayward
- U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Regulatory Science, 5100 Paint Branch Parkway, HFS-706, College Park, Maryland 20740-5350
| | - Jon W. Wong
- U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Regulatory Science, 5100 Paint Branch Parkway, HFS-706, College Park, Maryland 20740-5350
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15
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Viñas P, Campillo N, Martínez-Castillo N, Hernández-Córdoba M. Method development and validation for strobilurin fungicides in baby foods by solid-phase microextraction gas chromatography–mass spectrometry. J Chromatogr A 2009; 1216:140-6. [DOI: 10.1016/j.chroma.2008.11.036] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2008] [Revised: 11/07/2008] [Accepted: 11/13/2008] [Indexed: 11/30/2022]
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16
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Fast low-pressure gas chromatography–mass spectrometry method for the determination of multiple pesticides in grapes, musts and wines. J Chromatogr A 2009; 1216:119-26. [DOI: 10.1016/j.chroma.2008.11.015] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2008] [Revised: 11/05/2008] [Accepted: 11/10/2008] [Indexed: 11/23/2022]
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17
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Del Carlo M, Pepe A, Sacchetti G, Compagnone D, Mastrocola D, Cichelli A. Determination of phthalate esters in wine using solid-phase extraction and gas chromatography–mass spectrometry. Food Chem 2008. [DOI: 10.1016/j.foodchem.2008.04.065] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Dömötörová M, Matisová E. Fast gas chromatography for pesticide residues analysis. J Chromatogr A 2008; 1207:1-16. [DOI: 10.1016/j.chroma.2008.08.063] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Revised: 08/07/2008] [Accepted: 08/11/2008] [Indexed: 11/28/2022]
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19
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Evaluation of some parameters affecting troublesome pesticide analysis in gas chromatography–ion-trap mass spectrometry. J Chromatogr A 2008; 1201:78-90. [DOI: 10.1016/j.chroma.2008.05.081] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2008] [Revised: 05/22/2008] [Accepted: 05/27/2008] [Indexed: 11/20/2022]
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20
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Kirchner M, Húšková R, Matisová E, Mocák J. Fast gas chromatography for pesticide residues analysis using analyte protectants. J Chromatogr A 2008; 1186:271-80. [DOI: 10.1016/j.chroma.2007.08.089] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2007] [Revised: 08/21/2007] [Accepted: 08/24/2007] [Indexed: 11/30/2022]
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22
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Ly SY, Jung YS, Lee CH, Won Lee B. Administering Pesticide Assays in In Vivo-Implanted Biosensors. Aust J Chem 2008. [DOI: 10.1071/ch08028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An analytical pesticide assay of O-ethyl-O-4-(nitrophenyl)phenyl phosphonothioate (EPN) was carried out using the following: a carbon nanotube paste electrode, a mercury-immobilized carbon nanotube paste electrode, a glassy carbon electrode, a metal–gold electrode, and a DNA-immobilized carbon nanotube paste electrode (DPE), which is two-fold more sensitive than other sensors. The DPE was optimized using cyclic and square wave stripping voltammetry. Linear working ranges approached 5–55 mg L–1 EPN and the nano-range of 10–210 ng L–1 in a 0.1 mol L–1 NH4H2PO4 electrolyte solution, with a speedy analytical time of 30-s stripping. The detection limit was 2.57 ng L–1 (7.94 × 10–12 mol L–1), and the precision was 0.102% relative standard deviation (n = 15) at the 10.0 mg L–1 EPN spike. This indicates that the method is more sensitive than common voltammetric methods. This method was applied to fruit samples using patch- and needle-type electrodes, specifically on the skin tissues of an orange and an apple. Moreover, the implanted electrode was interfaced with a fish brain cell at the electrochemical workstation. Results showed that the aforementioned method can be used to conduct a pesticide assay in neuro-treated and non-treated cell systems.
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23
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Mastovska K. Chapter 6 Recent Developments in Chromatographic Techniques. FOOD CONTAMINANTS AND RESIDUE ANALYSIS 2008. [DOI: 10.1016/s0166-526x(08)00006-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Poole CF. Matrix-induced response enhancement in pesticide residue analysis by gas chromatography. J Chromatogr A 2007; 1158:241-50. [PMID: 17241638 DOI: 10.1016/j.chroma.2007.01.018] [Citation(s) in RCA: 151] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2006] [Revised: 01/02/2007] [Accepted: 01/05/2007] [Indexed: 11/16/2022]
Abstract
The sample matrix can cause an enhancement in the observed chromatographic response for pesticide residues in a matrix extract compared with the same concentration in a matrix-free solution. The matrix increases the transfer of pesticides from hot vaporizing injectors by reducing the thermal stress for labile compounds and by masking active sites in the injector responsible for the adsorption or decomposition of polar pesticides. The use of different injector types and matrix simplification procedures can reduce matrix-induced enhancement but do not eliminate it. The most effective strategy is to use matrix-matched calibration standards or analyte protectants which equalize the response enhancement for calibration standards and sample extracts. From a practical point of view it is important that the method used to correct for matrix-induced enhancement is compatible with low system maintenance. The different approaches for correcting matrix-induced enhancement for calibration in pesticide residue analysis are discussed and compared in this review.
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Affiliation(s)
- Colin F Poole
- Department of Chemistry, Room 183, Wayne State University, Detroit, MI 48202, USA.
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Hercegová A, Dömötörová M, Matisová E. Sample preparation methods in the analysis of pesticide residues in baby food with subsequent chromatographic determination. J Chromatogr A 2007; 1153:54-73. [PMID: 17258222 DOI: 10.1016/j.chroma.2007.01.008] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2006] [Revised: 12/08/2006] [Accepted: 01/05/2007] [Indexed: 12/01/2022]
Abstract
Pesticides are widely utilized at various stages of cultivation and during postharvest storage to protect plants against a range of pests and/or to provide quality preservation. Reliable confirmatory methods are required to monitor pesticide residues in baby foods and to ensure the safety of baby food supply. This review covers methods in which pesticide residues have been determined in baby food by the use of a wide range of chromatographic techniques after various sample preparation steps. The main attention is paid to the evaluation and improvement of sample extraction and clean-up methods (liquid extraction, solid-phase extraction (SPE), dispersive SPE (DSPE), microextraction procedures, matrix solid-phase dispersion (MSPD) and supercritical fluid extraction (SFE)) considering low concentration levels of pesticide residues in baby food resulting from stringent European Union (EU) legislation. Instrumental aspects together with the matrix effects significantly contributing to the most important parameters considered in pesticide residues analysis of baby food--limits of detection (LODs) and limits of quantification (LOQs) were included within the scope of this overview. Paper involves also monitoring studies.
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Affiliation(s)
- Andrea Hercegová
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia
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Lambropoulou DA, Albanis TA. Methods of sample preparation for determination of pesticide residues in food matrices by chromatography-mass spectrometry-based techniques: a review. Anal Bioanal Chem 2007; 389:1663-83. [PMID: 17541563 DOI: 10.1007/s00216-007-1348-2] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2007] [Revised: 04/27/2007] [Accepted: 05/07/2007] [Indexed: 10/23/2022]
Abstract
Much progress has been made in pesticide analysis over the past decade, during which time hyphenated techniques involving highly efficient separation and sensitive detection have become the techniques of choice. Among these, methods based on chromatographic separation with mass spectrometric detection have resulted in greater likelihood of identification and are acknowledged to be extremely useful and authoritative methods for determination of pesticide residues. Even with such powerful instrumental techniques, however, the risk of interference increases with the complexity of the matrix studied, so sample preparation before instrumental analysis is still mandatory in many applications, for example food analysis. This article summarizes the analytical characteristics of the different methods of sample-preparation for determination of pesticide residues in a variety of food matrices, and surveys their recent applications in combination with chromatographic mass spectrometric analysis. We discuss the advantages and the disadvantages of the different methods, address instrumental aspects, and summarize conclusions and perspectives for the future.
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Affiliation(s)
- Dimitra A Lambropoulou
- Laboratory of Environmental Technology, Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece.
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Donato P, Tranchida PQ, Dugo P, Dugo G, Mondello L. Rapid analysis of food products by means of high speed gas chromatography. J Sep Sci 2007; 30:508-26. [PMID: 17444220 DOI: 10.1002/jssc.200600407] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Since the invention of GC, there has been an ever increasing interest within the chromatographic community for faster GC methods. This is obviously related to the fact that the number of samples subjected to GC analysis has risen greatly. Nowadays, in routine analytical applications, sample throughput is often the most important aspect considered when choosing an analytical method. Gas chromatographic instrumentation, especially in the last decade, has been subjected to continuous and considerable improvement. High-speed injection systems, electronic gas pressure control, rapid oven heating/cooling and fast detection are currently available in a variety of commercial gas chromatographs. The main consequence of this favourable aspect is that high-speed GC is being increasingly employed for routine analysis in different fields. Furthermore, the employment of dedicated software makes the passage from a conventional to a fast GC method a rather simple step. The present review provides an overview of the employment of fast GC techniques for the analysis of food constituents and contaminants. A brief historical and theoretical background is also provided for the approaches described.
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Affiliation(s)
- Paola Donato
- Dipartimento Farmaco-chimico, Facoltà di Farmacia, Università di Messina, viale Annunziata, Messina, Italy
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Wong JW, Hennessy MK, Hayward DG, Krynitsky AJ, Cassias I, Schenck FJ. Analysis of organophosphorus pesticides in dried ground ginseng root by capillary gas chromatography-mass spectrometry and -flame photometric detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:1117-28. [PMID: 17249685 DOI: 10.1021/jf062774q] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
A method was developed to determine organophosphorus pesticides (OPs) in dried ground ginseng root. Pesticides were extracted from the sample using acetonitrile/water saturated with salts, followed by solid-phase dispersive cleanup, and analyzed by capillary gas chromatography with electron ionization mass spectrometry in selective ion monitoring mode (GC-MS/SIM) and flame photometric detection (GC-FPD) in phosphorus mode. The detection limits for most of the pesticides were 0.025-0.05 microg/g using GC-FPD but were analyte-dependent for GC-MS/SIM, ranging from 0.005 to 0.50 microg/g. Quantitation was determined from 0.050 to 5.0 microg/g with r 2 > 0.99 for a majority of the pesticides using both detectors. Recovery studies were performed by fortifying the dried ground ginseng root samples to concentrations of 0.025, 0.1, and 1.0 microg/g, resulting in recoveries of >90% for most pesticides by GC-FPD. Lower (<70%) and higher (>120%) recoveries were most likely from complications of pesticide lability or volatility, matrix interference, or inefficient desorption from the solid-phase sorbents. There was difficulty in analyzing the ginseng samples for the OPs using GC-MS at the lower fortification levels for some of the OPs due to lack of confirmation. GC-FPD and GC-MS/SIM complement each other in detecting the OPs in dried ground ginseng root samples. This procedure was shown to be effective and was applied to the analysis of OPs in ginseng root samples. One particular sample, a ground and dried American ginseng (Panax quinquefolius) root sample, was found to contain diazinon quantified at approximately 25 microg/kg by external calibration using matrix-matched standards or standard addition using both detectors. The advantage of using both detectors is that confirmation can be achieved using GC-MS, whereas the use of a megabore column in GC-FPD can be used to quantitate some of the nonpolar OPs without the use of matrix-matched standards or standard addition.
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Affiliation(s)
- Jon W Wong
- Center for Food Safety and Applied Nutrition, Office of Plant and Dairy Foods, HFS-336, U.S. Food and Drug Administration, 5100 Paint Branch Parkway, College Park, MD 20740-3835, USA.
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Dömötörová M, Kirchner M, Matisová E, de Zeeuw J. Possibilities and limitations of fast GC with narrow-bore columns. J Sep Sci 2006; 29:1051-63. [PMID: 16830719 DOI: 10.1002/jssc.200500472] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In this work, two narrow-bore capillary columns with different internal diameters (I.D.) 0.15 mm (15 m length, 0.15 microm film thickness) and 0.10 mm (10 m length, 0.10 microm film thickness) with the same stationary phase (5% diphenyl 95% dimethylsiloxane), phase ratio and separation power were compared with regard to their advantages, practical limitations and applicability in fast GC on commercially available instrumentation. The column comparison concerns fast GC method development, speed and separation efficiency, the sample transfer into the column utilizing split and splitless inlet, sample capacity, detection (analysing compounds of a wide range of polarities and volatilities--even n-alkanes C16-C28 and selected pesticides) and ruggedness (in the field of ultratrace analysis of pesticide residues in real matrix). Under conditions corresponding to speed/separation efficiency trade-off 0.10 mm I.D. versus 0.15 mm I.D. column provides a speed gain of 1.74, but all other parameters investigated were better for the 0.15 mm I.D. column concerning more efficient sample transfer from inlet to the column using splitless injection, no discrimination with split injection. Better sample capacity (three times higher for the 0.15 mm than for the 0.10 mm I.D. column) resulted in improved ruggedness and simpler fast GC-MS method development.
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Affiliation(s)
- Milena Dömötörová
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Bratislava, Slovak Republic
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Hercegová A, Dömötörová M, Kruzlicová D, Matisová E. Comparison of sample preparation methods combined with fast gas chromatography – mass spectrometry for ultratrace analysis of pesticide residues in baby food. J Sep Sci 2006; 29:1102-9. [PMID: 16830724 DOI: 10.1002/jssc.200500422] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Four sample preparation techniques were compared for the ultratrace analysis of pesticide residues in baby food: (a) modified Schenck's method based on ACN extraction with SPE cleaning; (b) quick, easy, cheap, effective, rugged, and safe (QuEChERS) method based on ACN extraction and dispersive SPE; (c) modified QuEChERS method which utilizes column-based SPE instead of dispersive SPE; and (d) matrix solid phase dispersion (MSPD). The methods were combined with fast gas chromatographic-mass spectrometric analysis. The effectiveness of clean-up of the final extract was determined by comparison of the chromatograms obtained. Time consumption, laboriousness, demands on glassware and working place, and consumption of chemicals, especially solvents, increase in the following order QuEChERS < modified QuEChERS < MSPD < modified Schenck's method. All methods offer satisfactory analytical characteristics at the concentration levels of 5, 10, and 100 microg/kg in terms of recoveries and repeatability. Recoveries obtained for the modified QuEChERS method were lower than for the original QuEChERS. In general the best LOQs were obtained for the modified Schenck's method. Modified QuEChERS method provides 21-72% better LOQs than the original method.
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Affiliation(s)
- Andrea Hercegová
- Institute of Analytical Chemistry, Slovak University of Technology, Faculty of Chemical and Food Technology, Radlinského, Bratislava, Slovak Republic
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Hercegová A, Dömötörová M, Matisová E, Kirchner M, Otrekala R, Stefuca V. Fast gas chromatography with solid phase extraction clean-up for ultratrace analysis of pesticide residues in baby food. J Chromatogr A 2005; 1084:46-53. [PMID: 16114235 DOI: 10.1016/j.chroma.2004.10.108] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A sample preparation method based on single solvent phase extraction and solid-phase extraction (SPE-NH2) clean-up is studied in combination with fast capillary gas chromatography (GC) to determine 18 selected pesticides belonging to various chemical classes in apples, the common raw material for baby food production and baby food, at the concentration level < or = 10 microg/kg maximum residual limit (MRL). Possibilities of mass spectrometry (MS) detector and electron capture detector (ECD) in fast gas chromatography (GC) of samples with complex matrice at ultra trace levels of pesticide residues were studied and compared. MS detection in single ion monitoring (SIM) mode provided higher selectivity compared to ECD. Optimisation of extraction as well as the simplifying of the whole process of sample preparation was carried out. Recoveries obtained at concentration level of 5 microg/kg (the required value for limit of quantification (LOQ) in baby food) were >90%, except of dimethoate (77.7%) and captan (46.4%) with MS detection. The obtained LOQs were at least 1 order lower than 5 microg/kg for the majority of compounds. The repeatability of gas chromatography-mass spectrometry (GC-MS) measurements of the matrix matched standards expressed as relative standard deviation was <11% except of captan and cypermethrin.
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Affiliation(s)
- A Hercegová
- Department of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinskeho 9, 81237 Bratislava, Slovak Republic.
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