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- W2349591275 abstract "A hydrogen preconcentration equipment was developed to separate and enrich the micro-hydrogen in natural gases with molecular sieve trap at 77 K and 159 K.The enriched hydrogen was carried into GC-isoto ratio mass spectrometric(IRMS) system by carrier gas to analyze the isotope composition.This on-line continuous-flow process can overcome the difficulty for the determination of micro-hydrogen in natural gases.A set of manual standard samples were analyzed by the method.The results show the method is applicable for the 1×10-5(V/V) hydrogen in the sample and has a good reproductivity and linearity,the relative standard deviation is less than 3.3‰.Using this method,the six gas samples from different oil-gas-bearing basins were analyzed.Further more,the isotope composition origin of hydrogen in natural gas was discussed." @default.
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- W2349591275 date "2012-01-01" @default.
- W2349591275 modified "2023-09-26" @default.
- W2349591275 title "On-line Continuous-Flow Microananlysis of Hydrogen in Natural Gases" @default.
- W2349591275 doi "https://doi.org/10.3724/sp.j.1096.2012.10417" @default.
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