Abstract
An analytical method for the simultaneous in situ derivatization of organotin and organolead compounds in water samples is described. Propylated derivatives of the analytes formed directly in the aqueous medium by reaction with tetrapropylborate ions are extracted by hexane/pentane. The organic layer is dried and purified with sodium sulfate, concentrated by evaporation of the solvent, and injected into a coupled gas chromatography-atomic absorption spectrometry system. The organotin and organolead compounds are determined sequentially. The optimum parameters for the derivatization and extraction procedures of in situ butylation of organolead compounds developed earlier could be successfully applied to the in situ propylation.
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