PURPOSE: To directly determine trace oxygen by thermally cracking a sample, bringing the thermally cracked gas into contact reaction with carbon to form a gas contg. carbon monoxide, separating the carbon monoxide from the formed gas, bringing the carbon monoxide into reaction with hydrogen to form methane and using the methane in a hydrogen flame ionizer, then making determination.
CONSTITUTION: A thermally cracking section 1 and CO converter section 2 of the apparatus for analyzing trace oxygen are formed in the same reaction vessel and a sample injecting port 7 is added to the top end of the reaction tube. A thermal conductivity detector 4 is attached behind the formed gas separating section 3 of the apparatus. High-purity gaseous helium is branched to two systems as a carrier gas at the time of analyzing the gaseous sample with this apparatus. One of these gases is introduced to a reference side of a TCD and the other one is introduced to the thermally cracking section 1 side and is passed in the apparatus system until finally the gas is introduced to a detecting section 6. Various gases are formed by thermal cracking and the soln. sample is introduced from the sample injecting port 7 into the thermally cracking section1 by using a microsyringe. The thermally cracked gas is introduced into the converter section 2.
MAEKAWA WAKUNORI
HASEGAWA YOSHIHISA
YOKOYAMA SHINICHI
YOSHIDA RYOICHI
NARITA HIDEO
NAGAISHI HIROSHI
KANDA YASUO
KANDA GIKEN SERVICE KK
| JPS5999351A | 1984-06-08 | |||
| JPS5081392A | 1975-07-02 |
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