温泉逸出气体常规成分快速测定

通过对腾冲火山地球化学观测站中用气相色谱仪对火山区温泉逸出气体成分的观测实践的理论总结,系统介绍了用气相色谱仪对温泉逸出气体常规成分的快速测定方法.结果表明,SP3400型气相色谱仪具有一系列优点.通过合理的仪器配置、参数设置、规范的运行维护和分析操作,SP3400型气相色谱仪可以快速准确地分析温泉逸出气体中He、H_2、O_2、N_2、CH_4、CO_2等常规组分的含量.对这些组份总量分析的相对偏差只有1.89%,对CO_2组份分析的相对偏差只有2.18%,对He、H_2等ppm级含量的组份分析的相对偏差分别只有10.24%和11.44%,说明SP3400的型气相色谱仪的测试结果有相当高的可靠性和准确性.SP3400型气相色谱仪为温泉逸出气体常规组分快速测定的理想仪器,可以在火山和地震监测台站推广使用.

Rapid Determination of Conventional Components of Emergent Gases from Thermal Springs

Studies have shown that fluids,especially gases plays a very important role in volcanic activity and earthquakes,and that analyzing and testing ingredients of emergent gas thermal spring have important scientific significance and monitoring value.This paper,by theoretical summary of the observation practice of determination of composition of emergent gas from the thermal springs in Tengchong volcano area using gas chromatography in the Tengchong Volcano geochemistry Observatory,systematically introduced the rapid determination method of ingredients of emergent gas thermal spring by gas chromatography.The results show that,SP3400-type gas chromatograph series has a number of advantages.Through a rational instrument setting,parameter configuration,standardized maintenance and analysis operations,SP3400-type gas chromatograph can rapidly and accurately analyze concentration of the conventional components such as He,H_2,O_2,N_2,CH_4,CO_2 of emergent gas from thermal spring.The relative deviation of analysis of total of these ingredients is only 1.89%,that of the CO_2 component,only 2.18%,He,H_2,ppm-level content,only 10.24% and 11.44% respectively,indicating the analysis and testing results of SP3400-type gas chromatograph have a very high reliability and accuracy.SP3400-type gas chromatograph is of ideal instruments for rapid determination of the conventional components of emergent gas from thermal springs,and can be promoted to use in volcanic and seismic monitoring stations.