The invention relates to an
quantitative determination method of the
isotope of
hydrogen,
hydrogen deuteride and
hydrogen deuterium, which comprises using
neon gas to be carrier gas, leading a gas chromatograph to adopt a double-strut double-temperature
system, choosing 50 DEG C sampling temperature, sampling through an
injector or a gas
sampling valve, and the sampling quantity is 0.1-2.2mL, sample gas which is separated by a gas-
chromatography column generates electrical signals through a
detector, recording the
pear areas of hydrogen, hydrogen deuteride and
deuterium gas of chromatogram peaks through a chromatogram working
station after the electrical signals are magnified through a front magnifier, adopting a
volume correction factor normalization method or an external standard method to measure the content of hydrogen (H2), hydrogen deuteride (HD) and
deuterium (D2), and getting detection results. The invention has the advantages of excellent separation effect of
hydrogen isotope and high detection sensitivity, the detection of the pureness of deuterium gas can reach more than 99.99%, hydrogen deuteride (HD) and deuterium (D2) are sampled in big dosage, the peaks are not overlapped, thereby guaranteeing the quantitative detection of high-purity deuterium gas, and standard gas is not needed to be prepared in the process of detecting. The method simplifies the operation process, which is convenient for on-line detection of deuterium gas in the process of producing.