气相色谱法在腾冲地震台气体组分测试中的应用  

Application of the gas chromatography in the testing of the gas compositions at Tengchong Seismic Station

作　　者：曾庆堂[1] 张山元 熊家伟 余庆坤[2] 起卫罗[2] 杨铭昌 马志刚[1] 番绍辉 ZENG Qingtang;ZHANG Shanyuan;XIONG Jiawei;YU Qingkun;QI Weiluo;YANG Mingchang;MA Zhigang;FAN Shaohui(Tengchong Seismic Monitoring Central Station,Yunnan Earthquake Agency,Yunnan Province 679100,China;Yunnan Earthquake Agency,Kunming 650224,China)

机构地区：[1]云南省地震局腾冲地震监测中心站,云南679100 [2]云南省地震局,昆明650224

出　　处：《地震地磁观测与研究》2023年第3期160-167,共8页Seismological and Geomagnetic Observation and Research

基　　金：2020年度长白山野外站研究课题:腾冲火山区地震活动分析研究(项目编号:NORSCBS20-12)。

摘　　要：采用气相色谱法,对腾冲热海大滚锅逸出气体组分进行测试分析,以建立一种逸出气体组分的快速测试分析方法。研究发现:(1)针对硫化物和常规气体组分,使用基于本文设定仪器条件的气相色谱分析方法,分离腾冲大滚锅逸出气体组分效果较好,柱效高,分析速度快,峰型不拖尾;(2)采用铝箔气袋排水采气,气体充分置换、样品充足且具有代表性;(3)气体样品进行去除水汽预处理,可提高仪器稳定性及气体组分的处理精度,延长色谱柱使用寿命;(4)有必要进行仪器稳定性检测,腾冲大滚锅逸出气体组分峰面积标准偏差在5%以内,仪器重现性良好,满足逸出气体组分分析要求;(5)采用归一化法对腾冲大滚锅逸出气体样品进行定量分析,测试数值标准偏差在0.01%—3.2%,表明仪器测试方法条件较好,精密度良好,重复性较好。We adopted gas chromatography to test and analyze the compositions of the gas escaping from the Dagunguo Hot Spring in Tengchong,Yunnan Province,in order to establish a rapid test and analysis method for escaping gas compositions.The study found that①For sulfide and conventional gas compositions,the gas chromatography based on the instrument conditions set in this paper has good separation efficiency,high chromatographic column,fast analysis,and no trailing peak for the escaping gas compositions.②The gases sampled by the gas bag made of aluminum foil are fully displaced,abundant,and representative.③Removing the moisture from the gas samples in advance helps to improve the stability of the instrument and the analytical accuracy of the gas composition.And the service life of the chromatographic column is prolonged.④It is necessary to test the stability of the instrument.The standard deviation of the peak area of the gas compositions is less than 5%,and the instrument has good repeatability,meeting the demand for the analysis of escaping gas compositions.⑤The normalized analysis is used for the quantitative analysis of escaping gas compositions.The standard deviation of the test values is between 0.01%and 3.2%,indicating a good test method,good precision,and good repeat ability of the instrument.

关 键 词：气相色谱仪 逸出气体 测试应用 

分 类 号：P315.7[天文地球—地震学]