分析测试学报2012，Vol.31Issue(2)：206-210,5.DOI:10.3969/j.issn.1004-4957.2012.02.017
FID/TCD并联气相色谱法测定天然气水合物的气体组成
Compositional Analysis of Gases in Natural Gas Hydrates by GC -FID/TCD
摘要
Abstract
A gas chromatographic analysis technique with parallel detectors of flame ionization detector and thermal conductivity detector( GC - FID/TCD) was established. The method can be used to determine 16 gases(C1 - C6 alkanes, C02, H2S, 02 +N2) of natural gas hydrates simultaneously by one injection. The analysis parameters, such as capillary column, temperature program, column flow, inlet temperature, detector temperature, the reference and makeup flow of TCD were optimized. Under the optimal conditions, good linearities were obtained in the experimental concentration range for the 16 gases with correlation coefficients (r2) of 0.999 03 - 0. 999 98. The limits of detection ranged from 0.000 3 mol/mol to 0. 046 mol/mol with relative standard deviations (RSDs, n =6) of 1. 6% -5.0% . The method was successfully applied in the determinations of gas compositions in the natural gas hydrates from Qilian Mountain Permafrost, South China Sea and laboratory synthetic samples. The result showed that the method was simple, practical, sensitive and reliable, and was suitable for the determination of gases in natural gas hydrates.关键词
天然气水合物/气体组成/GC - FID/TCD/毛细管分流器Key words
natural gas hydrate/ gas compositions/ GC - FID/ TCD/ capillary splitter分类
化学化工引用本文复制引用
贺行良,夏宁,刘昌岭,王江涛,孟庆国..FID/TCD并联气相色谱法测定天然气水合物的气体组成[J].分析测试学报,2012,31(2):206-210,5.基金项目
国土资源部公益性行业科研专项资助(201111026) （201111026）
中国地质调查局地质调查项目资助(1212011120271) （1212011120271）
国家自然科学基金资助项目(41072037) （41072037）
