Simultaneous Determination of Captan and Captafol in Apples and Potatoes by Thin Layer Chromatography and in situ Fluorometry
Open Access
- 1 November 1977
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of AOAC INTERNATIONAL
- Vol. 60 (6) , 1328-1330
- https://doi.org/10.1093/jaoac/60.6.1328
Abstract
A simple method is described for the simultaneous quantitative determination of captan [N-(trichloromethylthio)-3a,4,7,7a-tetrahydrophthalimide] and captafol [N-(1,1,2,2-tetrachloroethylthio)-3a,4,7,7a-tetrahydrophthalimide] in apples and potatoes. The fungicide residues are extracted with acetonitrile, partitioned into a solution of methylene chloride in petroleum ether, separated from each other and the co-extractives on a thin layer chromatographic plate impregnated with aluminum chloride, sprayed with sodium chlorate, and heated. The fluorescence is then measured directly from the chromatogram. Recoveries were greater than 90% in the test crops at the 0.2 ppm level.This publication has 1 reference indexed in Scilit:
- Distribution and dissipation of captafol applied to apple treesJournal of Agricultural and Food Chemistry, 1977