[Organochlorine insecticide residues in tobacco and tobacco products. 1. Analytical method].

An analysis method for quantitative serial estimation of organochlorine insecticide residues in tobacco is reported. This method is based on an hexane extraction followed by column chromatographic clean-up and preseparation as well as qualitative and quantitative gas chromatographic analysis. The following 16 substances are analyzed: HCB, alpha-HCH, lindane, heptachlor, aldrin, heptachlor epoxide, o,p'-DDE, p,p'-DDE, O,P'-TDE, p,p'-TDE, o,p'-DDT, dieldrin, endosulfan, beta-endosulfan and endosulfan sulfate. In a sample of 5 g of tobacco there can be detected: HCB, alpha-HCH, lindane, heptachlor, aldrin, heptachlor epoxide--o,oo1 ppm; o,p'-DDE, p,p'-DDE, dieldrin--o,oo3 ppm; o,p'-TDE, p,p'-TDE-- o,o1 ppm; o,p'-DDT, alpha-endosulfan, beta-endosulfan--o,o2 ppm; endosulfan sulfate--o,o3 ppm; p,p-DDT--o,o5 ppm.