Concentration analysis method and apparatus

摘要: PURPOSE: To enable highly accurate analysis with a prevention of entry atmospheric air and simplify piping system by supplying carrier gas through refining device to perform passage switching between sample multi-way cock seal. CONSTITUTION: A C is made pass 20 that packed into high pressure vessel decompressed decompression valve 1 remove impurities therein beforehand. As result, even when the flows concentrating tube 6 controlled low temperature together S during concentration process, as in decreases extremely, there little low-temperature absorption an adsorbent 6, which achieves higher sensitivity reduction background measurement. In addition, performed multi- way E seal, can be prevented thereby achieving sensitivity. COPYRIGHT: (C)1991,JPO&Japio