Enrichment analyzer for carbon and hydrogen elements in greenhouse gas CH4

Abstract

The invention discloses an enrichment analyzer for carbon and hydrogen elements in greenhouse gas CH4. Guiding in a greenhouse gas sample collected by a sample pipe at the presence of gas He by a sample guide valve; removing CO in air by a chemical trap; removing other miscellaneous gases by a pre-refrigerating cold trap, entering an oxidizing furnace, oxidizing into CO2 and H2O; enriching and transferring the generated CO2 in a liquid nitrogen cold trap; separating by a chromatographic column, adsorbing and dewatering by a water trap; guiding into a gas isotope ratio mass spectrometer by a shunt interface to detect; releasing the generated H2O by a water collecting cold trap to enter a Cr reaction furnace; guiding the generated H2 after reaction into the gas isotope ratio mass spectrometer by the open shunt interface to detect. The enrichment analyzer provided by the invention is provided with an interface directly connected with a host machine of the isotope ratio mass spectrometer, is an independent isotope mass spectrometer accessory device, meanwhile analyzes and determines the enrichment of carbon and hydrogen elements of the greenhouse gas CH4 and the isotope abundance; a target gas is purified and converted by utilizing a cold trap combination; the purity of a sample entering the mass spectrum is ensured; oxygen is timely and automatically supplied to the oxidizing furnace, and the oxidation capability of CuO is kept.

Description

technical field [0001] The present invention relates to a set of greenhouse gas CH 4 Medium carbon and hydrogen element enrichment analyzer. [0002] Background technique [0003] Climate warming is a major challenge facing the world at present. The main cause of global warming is the sharp increase in the concentration of greenhouse gases in the atmosphere. Among them, methane in the atmosphere is one of the most important greenhouse gases, and its total contribution to the greenhouse effect accounts for about 80%. The analysis of the global warming potential (GWP) shows that the greenhouse effect of methane is more than 20 times that of carbon dioxide in terms of the number of molecules. Methane is a powerful greenhouse gas and has a great impact on climate change. [0004] It is reported that nearly 15%-30% CH in the atmosphere every year 4 derived from the soil. As the global climate continues to warm, the degradation of permafrost, which accounts for about 25% of t...

AI Technical Summary

Problems solved by technology

[0008] Picarro G2201-i CH manufactured by Picarro 4 The isotope analyzer adopts wavelength-scanning optical cavity attenuation spectroscopy technology, which can only measure CH 4 carbon isotope ratio in GHG, but cannot achieve CH in GHG at the same time 4 The isotope ratio test of the two elements of carbon and hydrogen

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