| 摘要 |
A gas-analyzing system including in sequence a chromatographic gas separator, a second carrier gas inlet, a carrier gas transfer device and a gas component detector such as a gas density balance, thermal conductivity, ionization cross section detector or a mass spectrometer. A minor amount of sample dispersed in a major amount of a first carrier gas is flowed through the chromatographic separator and the effluent from the separator mixes with the second carrier gas before entering the transfer device. The transfer device is selectively permeable to the first carrier gas and in the case of hydrogen may be a heated palladium tube. The hydrogen selectively and totally transfers through the tube and a stream enriched in a sample dispersed in the second carrier gas remains with no loss of sample.
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