Determination of Tolclofos-Methyl in Soil and Lettuce by Gas Chromatography
Open Access
- 1 November 1997
- journal article
- Published by Oxford University Press (OUP)
- Vol. 80 (6) , 1298-1301
- https://doi.org/10.1093/jaoac/80.6.1298
Abstract
Two simple methods for the determination of tolclofos-methyl in soil and lettuce are presented. Soil samples were extracted with a methanol–water solution (9 + 1, v/v). The extract was cleaned up on a LC C18 SPE cartridge. The method was tested on 4 soils having very different physico-chemical characteristics and gave recoveries > 70% and a determination limit of 0.02 mg/kg soil. Lettuce samples were extracted with n-hexane. The extract was cleaned up on florisil SPE cartridges. The recoveries were > 83% and the determination limit was 0.01 mg/kg lettuce.Keywords
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