Abstract
For determination of out-gassings from plastic materials gas chromatographic methods coupled with headspace or thermal desorption sampling techniques are very well established. Nowadays, as a new analytical method, gaseous samples can also be classified by use of a chemosensory system (‘electronic nose’). Sensor measurements can be carried out quickly and enable reproducible detection of out-gassings in terms of a reliable finger print characterisation. The quartz microbalance chemosensory system under investigation uses the same sampling devices as headspace-GC and, moreover, an array of sensor elements which are coated with stationary phases of selected polarity, known from gas chromatography, as gas-sensitive layers for interaction with the analytes. This allows sensor method development to be complemented and verified by headspace gas chromatographic determinations.
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