摘要
使用SP3400气相色谱仪对腾冲大滚锅溢出气体进行气相色谱测定,发现在不同条件下一些气体组分含量有明显变化。为获得准确可靠的观测结果,对可能影响观测结果的各个环节进行实验。实验结果显示:铝箔气体样品袋对硫化物吸附较大,取样前用气样对气袋反复冲洗3次以上可以解决此问题;气样取回后放入冰箱冷冻20～30min能很好解决样品中水汽对仪器的影响;气体样品袋注入不同体积气体对测值基本没有影响;常规组分中H2、CO2、CH4稳定性很好,10天内测试最大相对误差在10%以内;O2组分在测试中偶然变化较大,无明显规律。
Applying SP3400 gas chromatograph to the gas chromatographic determination of the gas escape from Da- gunguo in Tengchong, we found that the content of gas-component was changed under various conditions. In or- der to get the accurate observational data, we did the experiment of every procedure which might influence the observation results. The experimental results show that： The adsorbing capacity of gas bag made by aluminum- foil to sulfide was stronger than that to other gas. To solve this problem, we should wash the gas bag over 3 times before sampling. Putting the gas samples into the refrigerator for 20 - 30 minutes would able to reduce the influence of the water vapor on the instrument. Injecting different volumes of gas to the gas bag scarcely had little influence on the observational value. The routine components such as H2, CO2, CH4 kept stability, because the maximum relative errors of observational values of these samples were below 10% in 10 days. However, the ob- servational value of 02 changed greatly occasionally and had also no evident regularity.
出处
《地震研究》
CSCD
北大核心
2012年第3期410-415,442,共6页
Journal of Seismological Research
基金
中国地震局三结合课题(2010)资助
关键词
气相色谱仪
气样组分
腾冲大滚锅
gas chromatography
gas sampling components
Dagunguo hot spring in Tengchong
