| 祁连山冻土区天然气水合物气体组分的
气相色谱法测定 |
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| 引用本文： | 贺行良,刘昌岭,孟庆国,祝有海,业渝光,夏 宁.祁连山冻土区天然气水合物气体组分的
气相色谱法测定[J].地质通报,2011,30(12):1857-1862. |
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| 作者姓名： | 贺行良 刘昌岭 孟庆国 祝有海 业渝光 夏 宁 |
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| 作者单位： | 1. 国土资源部海洋油气资源与环境地质重点实验室,山东 青岛 266071；
2. 中国地质调查局青岛海洋地质研究所,山东 青岛 266071；
3. 中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东 青岛 266100；
4. 中国地质科学院矿产资源研究所，北京100037 |
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| 基金项目： | 中国地质调查局项目《青藏高原冻土带天然气水合物调查评价》(编号:1212010818055); 国家自然科学基金项目《祁连山冻土区天然气水合物的结构特征及其控制因素》(编号:41072037) |
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| 摘 要： | 建立了气相色谱法测定祁连山冻土区天然气水合物C1~C5气体组分的分析方法，对比研究了单点法与多点法校正、外标法与外标归一化法定量,以及顶空法与排水法2种气体收集方式的区别。结果表明：顶空法制备、单点法校正、外标归一化法定量计算为气相色谱法测定天然气水合物气体组分的最佳方法, 方法相对标准偏差（RSD）为0～1.06%，检出限为0.0003%~0.0127%。通过对祁连山冻土区DK-2孔10个天然气水合物样品的测定，发现C1含量为60.64%~78.76%，C2含量为8.99%~13.60%，C3含量为6.58%~21.24%，C4和C5含量较少，可见C2+气体组分含量丰富，具有较低的C1/C2+比值（1.5~3.7），显示出明显的热解气特征。
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| 关 键 词： | 祁连山冻土区 天然气水合物 气体组成 气相色谱法 |
Gas chromatographic method for determination of gas composition from decomposed gas hydrate samples in Qilian Mountain permafrost |
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| HE Xing-liang,LIU Chang-ling,MENG Qing-guo,ZHU You-hai,YE Yu-guang,XIA Ning.Gas chromatographic method for determination of gas composition from decomposed gas hydrate samples in Qilian Mountain permafrost[J].Geologcal Bulletin OF China,2011,30(12):1857-1862. |
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| Authors: | HE Xing-liang LIU Chang-ling MENG Qing-guo ZHU You-hai YE Yu-guang XIA Ning |
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| Institution: | HE Xing-liang1,2,3,LIU Chang-ling1,MENG Qing-guo1,ZHU You-hai4,YE Yu-guang1,XIA Ning1,21.Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology,Ministry of Land and Resources,Qingdao 266071,Shandong,China,2.Qingdao Institute of Marine Geology,China Geological Survey,3.Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,Ocean University of China,Qingdao 266100,4.Institute of Mineral Resources,Chinese Academy... |
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| Abstract: | In this paper,gas chromatographic method for determination of C1~C5 gas composition from decomposed gas hydrate samples in Qilian Mountain permafrost was established,and the difference between single-and multi-point correction method,external standard and external standard normalization quantitative method,drainage and head space gas collection method was comparatively studied.The results indicate that the head space collection method,single correction method,and external standard normalization quantitative... |
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| Keywords: | Qilian Mountain permafrost natural gas hydrate gas composition gas chromatography |
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