| Determination of 49 Organophosphorus Pesticide Residues and Their Metabolites in Fish, Eggs and Milk by Dual Gas Chromatography-Dual Pulse Flame Photometric Detection with GPC cleanup. | |
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MedLine Citation:
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PMID: 22300587 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A new method for quantitative determination of 49 kinds of organophosphorus pesticide residues and their metabolites in fishes, eggs and milk by dual gas chromatography- dual pulse flame photometric detection was developed. Homogenized samples were extracted with acetone and methylene chloride (1+1, V/V), and then the extracts were cleaned up by GPC. The response of each organophosphorus pesticide showed a good linearity with its concentration, the linearity correlation was not less than 0.99.The detection limits(S /N = 3) of pesticides were in the range of 0.001 ~ 0.025 mg kg-1. The recovery experiments were performed by blank sample spiked at the low, medium and high fortification levels. The recoveries in for fishes, eggs and milk were 50.9% ~ 142.2 %, 53.3 % ~ 137.2%, 139.4 % ~ 50.3%, with the relative standard deviations (RSD, n=6) of 2.3 % ~ 24.9 %, 4.3 % ~26.7 %, 2.8 % ~ 32.2 %, respectively. The method was applied to detect organophosphorus pesticides in samples collected from the market, and satisfactory results were obtained. This quantitative method was high sensitive and exact, which could be applied to the accurate determination of organophosphorus contaminants in fishes, eggs and milk. |
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Authors:
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Lixin Yang; Heli Li; Fanggang Zeng; Yinping Liu; Ruifeng Li; Huijing Chen; Yunfeng Zhao; Hong Miao; Yongning Wu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-2 |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: - ISSN: 1520-5118 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-3 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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