摘要
涂炭方法对于单体烃氢同位素分析结果有重要影响。分别对正己烷或甲烷进样口注入、甲烷逆向注入3种涂炭方法对氢同位素值测定的影响进行了考察和对比。结果显示,在每次样品分析前采用甲烷逆向注入的涂炭方法,可保证高温裂解炉管中涂炭效果的一致性,使天然气烃类单体化合物氢同位素测定值具有最好的重复性和准确性。
The conditioning method has an important influence on the compound - specific analysis results of hydrogen isotope ratios. The effects of three methods (injection of n-hexane or methane in the inlets, the reverse injection of methane) on the determination of hydrogen isotope values were investigated and compared. The results showed that the method of reverse injection of methane before each sample analysis can ensure the consis-tency of conditioning in the pyrolysis furnace tube, and can provide the best repeatability and accuracy of the compound-specific hydrogen isotope determination of natural gas.
作者
张文龙
黄凌
ZHANG Wenlong;HUANG Ling(Central Laboratory of Geological Sciences,Research Institute of PetroleumExploration & Development,PetroChina,Beijing 100083,China)
出处
《石油实验地质》
CAS
CSCD
北大核心
2018年第6期855-858,共4页
Petroleum Geology & Experiment
基金
国家自然科学基金项目"天然气中轻烃单体氢同位素分布规律及其应用研究"(41473020)
中国石油天然气股份有限公司重点项目"复杂油气成藏示踪技术开发与应用"(2016A-0205)联合资助
关键词
天然气
氢同位素
分析方法
涂炭方法
natural gas
hydrogen isotopes
analysis method
conditioning method