Abstract
Concentrations of selected volatile chlorinated hydrocarbons (VCH) were determined in rain water and conifer needles by headspace gas-chromatography (HSGC) for the estimation of deposition and accumulation in the environment. Trichloroacetic acid (TCA), one of the main degradation products of VCH, was analysed as well. For this purpose decarboxylation of TCA to trichloromethane was used. A modified standard addition method (SA) for calibration with conifer needles is documented to show its capability as a tool for calibration in solid matrices in general. Results of current investigations are presented.
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