| Separation of benefin and trifluralin by gas chromatography using a liquid crystal column. | |
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MedLine Citation:
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PMID: 956328 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Benefin (N-[n-butyl]-N-ethyl-2,6-dinitro-alpha, alpha, alpha-trifluoro-p-toluidine) and trifluralin (2,6-dinitro-N,N-di-n-propyl-alpha, alpha, alpha-trifluoro-p-toluidine) (Figure 1) are isomeric preemergent herbicides (1,2). As they possess different activities, their use necessitates the development of a routine analytical method which differentiates between them. The separation of these isomers by gas-liquid chromatography (GLC) using conventional column packings has proved extremely difficult. Two partly successful separations have been previously reported to date. A partial separation was obtained using a Durapak-Carbowax 400/Poracil C column (3) and a complete separation using a column packed with a monomolecular layer of Carbowax 20M on Chromosorb W (4). Unfortunately, this latter column has a very limited life and the analysis time is 25 minutes. This paper reports a rapid and reproducible separation of benefin and trifluralin using a liquid crystal stationary phase. |
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Authors:
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M Hall; D N Mallen |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of chromatographic science Volume: 14 ISSN: 0021-9665 ISO Abbreviation: J Chromatogr Sci Publication Date: 1976 Sep |
Date Detail:
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Created Date: 1976-10-20 Completed Date: 1976-10-20 Revised Date: 2000-12-18 |
Medline Journal Info:
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Nlm Unique ID: 0173225 Medline TA: J Chromatogr Sci Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 451-2 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Chromatography, Gas
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methods* Chromatography, Liquid Herbicides / analysis* Isomerism Methods Toluidines / analysis* Trifluralin / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Herbicides; 0/Toluidines; 1582-09-8/Trifluralin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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