便携式GC-MS法快速测定固定污染源废气中的VOCs  

Rapid Determination of VOCs in Stationary Source with Portable GC-MS

作　　者：宋祖华[1] 谢馨[1] 柏松[1] 母应锋[1] 马光军[1] 杨正标[1] 凌娟 SONG Zu-hua XIE Xin BAI Song MU Ying-feng MA Guang-jun YANG Zheng-biao LING Juan(Nanjing Environmental Monitoring Center, Nanjing,Jiangsu 21QQ13, China Gulou District of Nanjing City Environmental Protection Bureau, Nanjing, Jiangsu 210011 , China)

机构地区：[1]南京市环境监测中心站,江苏南京210013 [2]南京市鼓楼区环境保护局,江苏南京210011

出　　处：《环境监测管理与技术》2017年第3期53-56,共4页The Administration and Technique of Environmental Monitoring

基　　金：江苏省环境监测科研基金资助项目(1606)

摘　　要：采用便携式GC-MS法快速测定固定污染源废气中VOCs,32种VOCs在2×10^(-7)~1×10^(-6)范围内线性良好,方法检出限为2×10^(-9)~1×10^(-8),标准气体样品6次测定结果的RSD为1.9%~19.1%,环境空气样品的加标回收率为66.2%~116%。在实际现场监测固定污染源中VOCs时,使用速查(Survey)功能可初步判断样品浓度,确定稀释倍数。比对试验结果表明,气袋和玻璃注射器采样法对VOCs测定结果无显著性差异。A portable GC-MS method was established for rapid determination of YOCs in exhaust gases from stationary sources. 32 kinds of YOCs had good linearity in （2 ×10^- 7 ~1 ×10^-6 ） volume fraction. The method detection limits were in the range of 2 ×10^-9 to 1×10^- 8. The RSD of calibration gases by 6 duplicate measure-ments were from 1.9%tol9.1%. A recovery range of 66. 2% -116% was obtained in ambient air samples. In the actual on-site monitoring of YOCs from stationary sources, the sample concentration could be preliminarily judged by survey function so as to determine the dilution factor. A comparison test showed that there was no sig-nificant difference between the sampling methods of air bag and glass syringe.

关 键 词：挥发性有机物 固定污染源 便携式气相色谱-质谱联用法 废气 

分 类 号：O657.63[理学—分析化学]