Procedures for Analysis of Surface Spray Deposits of Captafol on Coffee Trees,Captan on Apple Trees and Endosulfan on Hops by Gas-Liquid Chromatography |
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| Authors: | Barry K Cooke |
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| Abstract: | The procedures involve the removal of captafol, captan or endosulfan spray deposits from the plant surfaces with solvent and their measurement by g.l.c. In contrast to residue analysis, clean-up procedures are avoided and the speed of the methods enable large numbers of samples to be processed in the monitoring of initial spray deposits and the subsequent redistribution or loss in relation to the efficiency of spray application techniques. Recoveries of captafol and captan suspension deposits from glass were greater than 96%: recoveries of emulsion deposits from plant surfaces were greater than 95% for captafol, 93% for captan and 96% for endosulfan. |
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