AN AUTOSAMPLER WITH A SHORT TRANSFER LINE FOR CURIE-POINT PYROLYSIS CAPILLARY GAS-CHROMATOGRAPHY

A new multichannel autosampler which can automatically analyze up to t wenty samples in sequence has been developed for Curie point pyrolysis - capillary GC. Compared with a previous system [1] the transfer line between the pyroysis unit and chromatograph is shorter, and thus has less dead volume, and can be operated at a higher temperature (300-deg rees-C). The relative yields of higher boiling point, highly polar, an d thermally labile pyrolysates generated from polymers, and the reprod ucibility, were better than those obtained from the previous autosampl er. To facilitate rapid operation an additional flow controller is ins talled on the new device to shorten the time taken to purge air from t he sampler.