title: [Residues of organochlorine compounds in plant drugs. 1. Gas chromatographic determination of residues of organochlorine insecticides].
abstract: A method for the identification and determination of HCH-and DDT-isomers and their respective metabolites in vegetable drugs is presented. The plant material is extracted with hexane in a Soxhlet apparatus in the presence of silicagel and sodium sulfate. For removing interfering endogenous plant constituents a Celite oleum column cleanup and usually and acetonitrile partitioning to follow are necessary. A mixed stationary phase OV-17/QF-1 has proved effective for the gc separation on packed columns. 3H-ECD is used for detection. For the quantitative determination by using an external standard the peak height measurement is recommended. Recoveries of all insecticides were in the order of 70-105% with coefficients of variation between 6 and 20%. To ensure the results the alkaline treatment and oxidation of extracts are proposed.
mesh_terms: D002849:Chromatography, Gas; D003634:DDT / Q000032:analysis; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D004364:Pharmaceutical Preparations / Q000032:analysis*; D010946:Plants, Medicinal / Q000032:analysis*
chemical_list: D007306:Insecticides; D010573:Pesticide Residues; D004364:Pharmaceutical Preparations; D003633:Dichlorodiphenyl Dichloroethylene; D003634:DDT
vernacular_title: Untersuchung pflanzlicher Drogen auf Rückstände von Organochlorverbindungen. 1. Mitteilung: Gaschromatografische Bestimmung von Rückständen chlororganischer Insektizide.