Abstract. An identification method for chemical warfare agents using a capillary column gas chromatograph equipped with a thermal desorption cold trap injector and three different detectors is described. The most reliable identification parameters were the retention indices. The relative photoionization detectorlflame ionization detector response ratios normalized to aniline gave additional information about all compounds, whereas the response ratios calculated for the thermionic flame ionization and thermionic photoionization detection gave reliable results only for the nerve agents soman and tabun.

SummaryThe aroma profiles of different types of low alcohol and non-alcohol beer have been compared by collection of volatile headspace compounds on Tenax resin and GC-MS analysis following thermal desorption. Some aroma compounds have been tentatively identified by NBS library search.