Abstract
The analyte-detection power of gas chromatography combined with cryotrapping infrared spectrometry (GC-IR) is improved by a factor of 30–100 by injection of large sample volumes by use of a loop-type interface with concurrent solvent evaporation. The usefulness of this of the analysis of real-life samples is illustrated by the identification of polyaromatic hydrocarbons (PAHs) in river Rhine water at a level of 0.5 μg/1.
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