Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods
A new extraction and cleanup procedure with gas chromatography was developed for the sensitive determination of acephate, dimethoate, malathion, diazinon, quinalphos, chlorpyrifos, profenofos, ?-endosulfan, ?-endosulfan, chlorothalonil and carbaryl using 1-chloro-4-fluorobenzene as an internal stand...
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2023
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my.uniten.dspace-309632023-12-29T15:56:46Z Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods Lal A. Tan G. Chai M. 24172476100 7202393048 24172523100 Chromatography, Gas Food Analysis Food Contamination Fruit Pesticides Reproducibility of Results Sensitivity and Specificity Solid Phase Extraction Time Factors Vegetables Acetone Chromatographic analysis Fruits Gas chromatography Hexane Insecticides Phase separation Solvents Vegetables pesticide Analytical procedure Chromatographic methods Fruits and vegetables Internal standards Limit of detection Limit of quantifications Multi-residue analysis Solid-phase extraction article chemistry food analysis food contamination fruit gas chromatography instrumentation methodology reproducibility sensitivity and specificity solid phase extraction time vegetable Extraction A new extraction and cleanup procedure with gas chromatography was developed for the sensitive determination of acephate, dimethoate, malathion, diazinon, quinalphos, chlorpyrifos, profenofos, ?-endosulfan, ?-endosulfan, chlorothalonil and carbaryl using 1-chloro-4-fluorobenzene as an internal standard in fruits and vegetables. Several extracting and eluting solvents for solid-phase extraction were investigated. The overall extracting solvent with a mixture of acetone:ethyl acetate:hexane (10:80:10, v/v/v) and a eluting solvent of 5% acetone in hexane used with the RPC18 cartridge gave the best recovery for all of the investigated pesticides, and minimized the interference from co-extractants. Under the optimal extraction and clean-up conditions, recoveries of 85 - 99% with RSD < 5.0% (n = 3) for most of the pesticides at the 0.02-0.5 mg/kg level were obtained. The limit of detection was between 0.005-0.01 mg/kg and the limit of quantification was 0.01 mg/kg. This analytical procedure was characterized with high accuracy and acceptable sensitivity to meet requirements for monitoring pesticides in crops. 2008 � The Japan Society for Analytical Chemistry. Final 2023-12-29T07:56:46Z 2023-12-29T07:56:46Z 2008 Article 10.2116/analsci.24.231 2-s2.0-43049173768 https://www.scopus.com/inward/record.uri?eid=2-s2.0-43049173768&doi=10.2116%2fanalsci.24.231&partnerID=40&md5=1813a11d3b288c8943709722a447b7f4 https://irepository.uniten.edu.my/handle/123456789/30963 24 2 231 236 Japan Society for Analytical Chemistry Scopus |
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Chromatography, Gas Food Analysis Food Contamination Fruit Pesticides Reproducibility of Results Sensitivity and Specificity Solid Phase Extraction Time Factors Vegetables Acetone Chromatographic analysis Fruits Gas chromatography Hexane Insecticides Phase separation Solvents Vegetables pesticide Analytical procedure Chromatographic methods Fruits and vegetables Internal standards Limit of detection Limit of quantifications Multi-residue analysis Solid-phase extraction article chemistry food analysis food contamination fruit gas chromatography instrumentation methodology reproducibility sensitivity and specificity solid phase extraction time vegetable Extraction |
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Chromatography, Gas Food Analysis Food Contamination Fruit Pesticides Reproducibility of Results Sensitivity and Specificity Solid Phase Extraction Time Factors Vegetables Acetone Chromatographic analysis Fruits Gas chromatography Hexane Insecticides Phase separation Solvents Vegetables pesticide Analytical procedure Chromatographic methods Fruits and vegetables Internal standards Limit of detection Limit of quantifications Multi-residue analysis Solid-phase extraction article chemistry food analysis food contamination fruit gas chromatography instrumentation methodology reproducibility sensitivity and specificity solid phase extraction time vegetable Extraction Lal A. Tan G. Chai M. Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods |
| description |
A new extraction and cleanup procedure with gas chromatography was developed for the sensitive determination of acephate, dimethoate, malathion, diazinon, quinalphos, chlorpyrifos, profenofos, ?-endosulfan, ?-endosulfan, chlorothalonil and carbaryl using 1-chloro-4-fluorobenzene as an internal standard in fruits and vegetables. Several extracting and eluting solvents for solid-phase extraction were investigated. The overall extracting solvent with a mixture of acetone:ethyl acetate:hexane (10:80:10, v/v/v) and a eluting solvent of 5% acetone in hexane used with the RPC18 cartridge gave the best recovery for all of the investigated pesticides, and minimized the interference from co-extractants. Under the optimal extraction and clean-up conditions, recoveries of 85 - 99% with RSD < 5.0% (n = 3) for most of the pesticides at the 0.02-0.5 mg/kg level were obtained. The limit of detection was between 0.005-0.01 mg/kg and the limit of quantification was 0.01 mg/kg. This analytical procedure was characterized with high accuracy and acceptable sensitivity to meet requirements for monitoring pesticides in crops. 2008 � The Japan Society for Analytical Chemistry. |
| author2 |
24172476100 |
| author_facet |
24172476100 Lal A. Tan G. Chai M. |
| format |
Article |
| author |
Lal A. Tan G. Chai M. |
| author_sort |
Lal A. |
| title |
Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods |
| title_short |
Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods |
| title_full |
Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods |
| title_fullStr |
Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods |
| title_full_unstemmed |
Multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods |
| title_sort |
multiresidue analysis of pesticides in fruits and vegetables using solid-phase extraction and gas chromatographic methods |
| publisher |
Japan Society for Analytical Chemistry |
| publishDate |
2023 |
| _version_ |
1806423466252959744 |
| score |
13.211869 |