Carbon analyzer for both aqueous solutions and solid samples

Details Carbon analyzer for both aqueous solutions and solid samples Carbon analyzer for both aqueous solutions and solid samples

1993-02-19

1993-12-21

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

422 8205, 422 8209, 436145, 436146, 2503561, G01N 3112, G01N 2135

Patent

active

052719006

ABSTRACT:
A carbon analyzer capable of measuring carbon contents of both liquid and solid samples under appropriate conditions includes not only basic components of a total organic carbon (TOC) analyzer such as a carrier gas supplying unit 22, a sample injection unit 2 for a liquid sample 6, a liquid sample combustion-oxidation vessel 12 and a CO.sub.2 detector 46, but also a solid sample intake unit 26 for receiving a solid sample, converting its carbon components into CO.sub.2 and sending it into the CO.sub.2 detector 46 together with a carrier gas. The CO.sub.2 detector 46 is a non-dispersive infrared analyzer with two measuring cells 48a and 48b having different lengths and disposed in series with a light flux such that the light flux will have different optical path lengths through these measuring cells 48a and 48b. A switching valve 44 serves to direct the gas to be tested selectively to either of the measuring cells 48a and 48 b and the carrier gas to the other as a purge gas.

REFERENCES:
patent: 3296435 (1967-01-01), Teal et al.
patent: 3854877 (1974-12-01), Csaky et al.
patent: 3985505 (1976-12-01), Bredeweg
patent: 4271124 (1981-06-01), Speeter
patent: 4332770 (1982-06-01), Ishida et al.

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