| Evaluation and confirmation of an alkylation-gas-liquid chromatographic method for the determination of carbamate and urea herbicides in foods. | |
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MedLine Citation:
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PMID: 965329 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An alkylation technique using methyl iodide and sodium hydride in dimethyl sulfoxide has been evaluated for 3 carbamate and 7 urea herbicides in 9 foods. Recoveries ranged from 56 to 113%, depending on herbicide, concentration, and food type. Reproducibility was about +/-6% at 0.1 and 1.0 ppm. Identities of the herbicides were confirmed at these and lower levels by cleaving the aniline moiety from the alkylated herbicides with sodium methoxide in methanol, followed by gas-liquid chromatography on the same column as the parent compound. An electrolytic conductivity detector in the nitrogen mode was used for all analyses. Minimum detectable levels were in the range of 0.005-0.01 ppm in the foods studied. |
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Authors:
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J F Lawrence |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal - Association of Official Analytical Chemists Volume: 59 ISSN: 0004-5756 ISO Abbreviation: J Assoc Off Anal Chem Publication Date: 1976 Sep |
Date Detail:
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Created Date: 1976-11-21 Completed Date: 1976-11-21 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 7505559 Medline TA: J Assoc Off Anal Chem Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1061-5 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Alkylation Carbamates* Chromatography, Gas* Chromatography, Liquid Evaluation Studies as Topic Food Analysis* Herbicides / analysis* Methods Microchemistry Pesticide Residues / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Carbamates; 0/Herbicides; 0/Pesticide Residues |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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