Chromatographic determination of chlorinated phenoxyacetic acids by simultaneous extraction-methylation and application to soil analysis
✍ Scribed by Li Chiang; Robert J. Magee; Bruce D. James
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 801 KB
- Volume
- 255
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
A rapId smmltaneous extra&on-methylatlon procedure was developed for the gas chromatographx analysts of four chlormated phenoxyacetlc acids [2,3-and 2,4-dxhlorophenoxyacetic acids (2,3-and 2,4-D), 2,4,5tnchlorophenoxyacetic aad (2,4,5-T) and (4-chloro-2-methylphenoxy)propiomc acid (MCPP)] m sod samples Whde the four acidic herbicides are extracted from the sod, they are estenfied m situ to their methyl esters usmg an orgamc solubtier, of those mvestlgated, benzyltr~methylammonmm chloride was the most efficient The recovenes and preclnons for all four herbtcldes were lugh (2,3-D, 96 6 f 2 l%, 2,4-D, 96 4 f 2 8%, 2,4,5-T, 96 6 f 2 3%, MCPP, 94 6 f 3 0%) For companson, separation and determmatlon by hqmd chromatography were also apphed Keyword Gas chromatography, Liqmd chromatography, Chlorophenoxyacetx acids, ExtractIon-methylation, Hertucldes, Sods