二维气相色谱法测定流体包裹体中气相成分  

Determination of Gaseous Components in Fluid Inclusion Samples by Two-dimensional Gas Chromatography

作　　者：杨丹[1] 徐文艺[1] 崔艳合[1] 陈伟十[1] 连玉[1] 

机构地区：[1]中国地质科学院矿产资源研究所成矿作用与资源评价重点开放实验室,北京100037

出　　处：《岩矿测试》2007年第6期451-454,共4页Rock and Mineral Analysis

基　　金：国家自然科学基金项目资助(40303008);国家科技支撑计划课题资助(2006BAB01B06);国家重点基础研究发展规划(973)项目资助(2002CB412605)

摘　　要：建立了双柱、双检测器串联的二维气相色谱测定流体包裹体中气相成分H2、O2、N2、CO、CH4、CO2、H2O、C2H2、C2H6、C3H8的方法。方法经济、易行，灵敏度和精密度高，检出限在10^-4～10^-6（x，摩尔分数），精密度（RSD）小于7％。所获得真实水量与同一缩分样的液相成分离子色谱测定结果相结合，可以得到包裹体溶液中的离子浓度。目前已应用于流体包裹体样品分析，分析结果符合地质研究的要求。A method for determination of gaseous components in fluid inclusions by two-dimensional gas chromatography was established. The gas chromatograph used in this work consists of double-column （stainless steel with two six-port valves） and double-detector （TCD and FID） connected in series. The gaseous components （H2, O2, N2, CO, CH4, CO2, H2O, C2H2, C2H6, C3H8 ） were extracted from fluid inclusions with thermal decrepitation method and then determined by two-dimensional gas chromatography. The detection limits of the method for the gaseous components are 10^-4 -10^-6（x, mol/mol） with precision of less than 7% RSD（n =6）. The method has been successfully applied to the determination of gaseous components in fluid inclusion samples with the advantages of high sensitivity and accuracy.

关 键 词：二维气相色谱 气相成分 流体包裹体 

分 类 号：O657.71[理学—分析化学] O659[理学—化学]