Bemerkung zur Bestimmung von DDT (Dichlordiphenyltrichlor�than) und HCCH (Gamma-Hexachlorcychlohexan) nebeneinander durch indirekte Analyse

Insecticide Analysis, Infrared Determination of Dichlorodiphenyltrichloroethane and Benzene Hexachloride in Insecticides

“…A partition chromatographic method of Prat and Colas (19) can be successfully used to determine BHC but cannot always be relied upon in the analysis for DDT because the elution zones of hepta-and octachlorocyclohexanes, sometimes present as impurities in BHC, overlap that of DDT. Chemical methods reported by Perkow (78) and Weber (24) appear to be complicated and are unable to distinguish among the several isomers of BHC found in commercial preparations. A polarographic determination of -BHC in the presence of DDT has been described by Wolf (26) and a polarographic determination of both -BHC and DDT in mixtures of the twO was reported by Tamamushi and Tanaka (22).…”

Quantitative Infrared Analyses of Mixtures of Isomeric of Closely Related Substances

“…For the determination of the , '-isomer content of DDT, crystallization techniques (2), dehydrohalogenation (34), specific color reactions (27), and infrared absorption (8,11) have been used. Mixtures of BHC and DDT have been analyzed by total chlorine and labile chlorine assay (32) and by separating the BHC from the DDT by paper chromatography (22). DDT and TDE mixtures have been analyzed by chromatographic techniques (1).…”