摘要
结合环境监测工作的实际情况,应用双柱双检测器气相色谱法,比较了非甲烷总烃不同的测定方法,探讨了在实际环境监测分析中非甲烷总烃测定过程的一些关键性技术问题,对色谱条件提出了几点优化建议,发现非甲烷总烃测定结果以甲烷计更接近实际监测情况,并验证了HJ/T 38—1999和HJ 604—2011方法中2种总烃标准曲线绘制方法的等效性,但在实际环境监测中HJ 604—2011方法操作更加简捷。双柱双检测器气相色谱法测定非甲烷总烃也存在严重的不足,基于FID响应值的非甲烷总烃不能准确全面反映空气有机污染程度,可能会掩盖空气中某些有机污染。
According to the practical works on environmental monitoring,different methods of the application of double columns and double detectors for gas chromatography to determine NMHC were compared,and some key technical problems in the determination process of NMHC were analyzed.Some suggestions were made as to optimize the chromatographic conditions.NMHC results measured by CH4 were found to be more close to the actual monitoring,and the total hydrocarbon standard curves drawn by the HJ/T 38-1999 and HJ 604-2011 methods were verified to be equivalent,but the operation of HJ 604-2011 method were more simplet in the practice of environment monitoring.There are also some serious shortcomings for the double columns and double detectors gas chromatographic method to determine NMHC,as NMHC based on the FID response values couldn＇t reflect the air organic pollution degree accurately,it may conceal the existence of some organic pollution in the air.
出处
《中国环境监测》
CAS
CSCD
北大核心
2013年第5期129-131,共3页
Environmental Monitoring in China
关键词
非甲烷总烃
总烃
校准曲线等效性
nonmethane hydrocarbon
total hydrocarbons
calibration curve equivalence
