ANALYSIS OF CHLORINATED 1,3-BUTADIENES BY SOLID-PHASE MICROEXTRACTIONAND GAS-CHROMATOGRAPHY MASS-SPECTROMETRY

Hexachloro-1,3-butadiene, as well as some of its dechlorinated degrada tion products, is known to be an antifungal agent and a by-product of the manufacture of chlorinated hydrocarbons. We analysed 1,1,4,4-tetra chloro-1,3-butadiene (TCBD), 1,1,2,4,4-pentachloro-1,3-butadiene (1,1, 2,4,4-PCBD), cis-1,1,2,3,4-pentachloro-1,3-butadiene (cis-1,1,2,3,4-PC BD) and hexachloro-1,3-butadiene (HCBD) in water by solid-phase microe xtraction (SPME) and gas chromatography-mass spectrometry (GC-MS). We optimised the analytical technique, considering the efficiency of the desorption and extraction under different experimental conditions. The linearity and the sensitivity was tested. The lower concentrations de tected were 25-50 ng/l and the linearity of the absorption was verifie d in the range 0.1-200 mu g/l. The method has been applied to polluted ground-water samples.