Environmental water analytical instrument

摘要

PURPOSE:To make sepn. with every component with high resolving power by passing a gas contg. an objective component through a porous polystyrene prior to an analysis, enriching only the volatile component selectively at a high ratio and injecting the same into a capillary column. CONSTITUTION:A flow passage to a carrier gas source 4 inflow port 2b of an aeration vessel a sample enricher 1a a port 6 open to the atm. is first formed. The carrier gas is admitted into the aeration vessel 2, then the volatile component contained in a sample (S) is separated and is conveyed together with the carrier gas to the enricher 1 where the volatile component is adsorbed to an adsorbent 1b packed in the enricher 1 and the sample is enriched. A flow passage to the gas source 4 the enricher 1 the sample inlt port 7 a sample injection mechanism 8 the capillary column 9 is then formed, and a capillary tube 9a of the mechanism 8 is immersed in a liquefied gas tank 8b, by which said tube is cooled to a cryogenic temp. While the carrier gas is passed to the enricher 1, a heater 1d is electrically heated. The adsorbed 1b volatile component is then condensed together with the carrier gas in the tube 9a and is separated to every component by the high resolving power of the column 9.