一台气相色谱仪同时测定陆地生态系统CO_2、CH_4和N_2O排放  

Simultaneous measurement of CO_2,CH_4 and N_2O emission from terrestrial ecosystem with one improved gas chromatography

作　　者：王跃思[1] 刘广仁[1] 王迎红[1] 孙扬[1] 薛敏[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029

出　　处：《环境污染治理技术与设备》2003年第10期84-90,共7页Techniques and Equipment for Environmental Pollution Control

基　　金：中国科学院知识创新工程重大项目资助 (KZCX1 SW 0 1);国家自然科学基金资助项目 ( 4 0 2 2 2 0 2和 40 175 0 3 0 )

摘　　要：通过对气相色谱仪进样、分析气路和阀驱动系统的改造 ,同一台色谱仪可以同时检测空气样品中的CO2 、CH4和N2 O。测试结果表明 ,仪器的灵敏度、分辨率和精密度均很高 ,线性范围符合要求 ;仪器系统能够在野外实验室长期稳定运转 ,可方便用于测定陆地生态系统CO2 、CH4和N2 O排放 ,能快速、准确、可靠地获取观测数据。With improving the system of injection port, gas line and valve-drive model of a gas chromatography, the same one instrument can measure CO 2, CH 4 and N 2O in a same air sample at the same time schedule. Test results show that this instrument has high sensitivity, high resolution and precision. Contemporary, the linearly range of responsible of the system meets the requirement of the experiments. This system can run stably in a long term in a field station, and can obtain observation data quickly, accurately and credibly.

关 键 词：气相色谱仪 同时测定 陆地生态系统 CO2 CH4 N2O 排放 

分 类 号：X835[环境科学与工程—环境工程] X859