Portable gas chromatograph used for analysizing trace organics in environmental gas
A gas chromatograph and ambient gas technology, applied in the field of portable gas chromatograph and instrumentation, can solve the problems of great difference in ionization efficiency, difficult to popularize general detectors, short PID life, etc., and achieve light weight and compact instrument. , the effect of low instrument noise
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[0038] The present invention consists of a carrier gas generation system 3 (electrolyzed water device), a six-way solenoid valve 2, a built-in trace gas sampling pump 1, a micro trap 4, a μFID detector 5-3, a capillary column separation system 5 and a signal amplifier 7, Microcomputer processing system 8 and other parts are used for on-site detection of trace or even ultra-trace organic components in various environmental gases.
[0039] Its working process is divided into steps such as sampling, sample injection, separation, combustion, and signal acquisition and amplification. The sampling process is as follows: after starting up, the carrier gas generation system 3, that is, the water electrolysis device, starts to work to generate hydrogen and oxygen, and the separated hydrogen enters the capillary column separation system 5 through ports 25 and 26 of the six-way solenoid valve 2 as carrier gas. The capillary separation column 5-2 with a length of 15-30 meters, the oxygen ...
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