Sampling and analysis of airborne chlorinated methanes — Comparison of FID and ECD
A sampling method using activated charcoal, followed by percolation with ethanol and FID or ECD chromatographic analysis, depending on the concentrations to be monitored, makes it possible to evaluate concentrations of methylene chloride between 5 and 1000mg m−3, chloroform between 0.1 and 2000mg m−3, and carbon tetrachloride between 0.015 and 1000mg m−3.
Key WordsGas chromatography Chlorinated methanes Activated charcoal sampling Pollution
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