PTR-TOFMS在线监测化工园区周边大气中VOCs的应用分析  

Feasibility analysis of benzene series in passenger cars by on-line mass spectrometry

作　　者：卞玉倩 胡丹 魏文 Bian Yuqian,Hu Dan,Wei Wen(Beijing SDL Technology Co., Ltd, Beijing, 102206, Chin)

机构地区：[1]北京雪迪龙科技股份有限公司,北京102206

出　　处：《现代科学仪器》2018年第1期99-103,共5页Modern Scientific Instruments

基　　金：国家重点研发计划重点专项（No：2016YFC0200100）资助

摘　　要：本文主要研究了质子转移飞行时问质谱仪（PTR—TOFMS）作为一种具有较高灵敏度和质量分辨率的分析设备，在化工园区周边大气中VOCs在线监测中的应用，讨论了PTR—TOFMS检测化工园区周边大气中常见VOOs的分析指标情况，包括检出限、定量下限、重复性及准确性等。结果表明，检出限与定量下限完全满足分析要求，重复性小于3％，相对误差绝对值均低于5％。并结合PTR—TOFMS在园区的实际应用，分析了PTR—TOFMS在线监测化工园区VOCs浓度的实时变化情况以及长时间段内浓度变化情况及影响因素。结果表明PTR—TOFMS用于化工园区周边大气中VOCs的在线监测效果良好。The on-line monitoring of atmospheric VOCs around the chemical industrial park by the proton transfer time of flight mass spectrometer （PTR-TOFMS） which has high sensitivity and mass resolution was studied. The analysis parameters of common VOCs in the atmosphere surrounding the chemical industrial park by PTR-TOFMS is discussed, including detection limit, quantitative lower limit, repeatability and accuracy. The results show that the detection limit and the quantitative lower limit fully meet the requirements of the analysis, the repeatability is less than 3%, The absolute value of relative error is less than 5%. Combined with the practical application of PTR-TOFMS in the park, The real-time changes of VOCs concentration in the chemical industrial park by PTR-TOFMS and the change of the concentration in the long period and the influencing factors were analyzed. The results show that the application of PTR-TOFMS to the on-line monitoring of VOCs in the surrounding atmosphere of the chemical industrial park has a good effect.

关 键 词：PTR-TOFMS 化工园区 VOCS 在线监测 应用分析 

分 类 号：X701[环境科学与工程—环境工程] X84