远距离多通道的无组织排放VOCs连续在线监测系统  

Remote multi-channel continuous online monitoring system for fugitive emissions of VOCs

作　　者：曹迅 陈伟章 杜华忠 洪义 吕金诺 莫婷 马琳 黄正旭 高伟 CAO Xun;CHEN Weizhang;DU Huazhong;HONG Yi;LYU Jinnuo;MO Ting;MA Lin;HUANG Zhengxu;GAO Wei(Institute of Mass Spectrometry and Atmospheric Environment,Jinan University,Guangzhou 510632,China;Guangzhou Hexin Instrument Co.Ltd.,Guangzhou 510530,China;Comprehensive Service of Zhejiang Toumen Port Economic Development Zone,Taizhou 318000,China;Henan Xinxiang Ecological Environment Monitoring Center,Xinxiang 453000,China;Guangdong Provincial Engineering Research Center for On-Line Source Apportionment System of Air Pollution,Guangzhou 510632,China)

机构地区：[1]暨南大学质谱仪器与大气环境研究所,广州510632 [2]广州禾信仪器股份有限公司,广州510530 [3]浙江头门港经济开发区综合服务中心,台州318000 [4]河南省新乡生态环境监测中心,新乡453000 [5]广东省大气污染在线源解析系统工程技术研究中心,广州510632

出　　处：《环境工程学报》2021年第2期737-745,共9页Chinese Journal of Environmental Engineering

基　　金：广州市科技计划项目(201710010005);广东省重点领域研发计划项目(2020B1111360002)。

摘　　要：研制了一套远距离多通道VOCs连续采样在线监测系统。监测系统主要由远距离多通道VOCs连续采样装置与真空紫外灯单光子电离源飞行时间质谱仪组成。通过PAMS与有机硫标准气体对该系统进行了性能表征测试。结果表明:各物质连续7次实验RSD≤7%;最优检测限为0.004μmol·mol^(−1);在0.01~1.00μmol·mol^(−1)浓度范围内各物质判定系数大于0.99;定量误差在−13%~25%之间,可以满足环境中VOCs监测要求。该监测系统采样距离为500 m,可在1 h内完成10个不同点位的采样,并可对C4~C10烃类、有机硫化物和苯系物VOCs进行在线分析。该系统可应用于化工园区无组织排放VOCs的在线监测中。In this study,an online remote and multi-channel VOC monitoring system is developed.The monitoring system is mainly composed of a remote and multi-channel continuous sampling device and a vacuum ultraviolet single-photon ionization time-of-flight mass spectrometer.The system was characterized by PAMS and organic sulfur standard gases.Results showed that the RSD(n=7)of each substance was less than 7%and the detection limit was 0.004μmol·mol^(−1).The linear range was 0.01~1μmol·mol^(−1)and the determination coefficient of each substance was greater than 0.99.The quantitative error is between−13%and 25%,which meets the monitoring requirements of VOCs in the environment.By using the monitoring system,analysis of samples from 10 different sampling points can be completed within 1 h;the sampling sites were 500 m away from the monitoring site.On-line analysis of C4~C10 hydrocarbons,organic sulfides and benzene VOCs have been successfully demonstrated.This study has broad application prospects in the monitoring of fugitive emissions of VOCs in chemical parks.

关 键 词：远距离 多个采样通道 无组织排放 挥发性有机物 连续在线监测 

分 类 号：X84[环境科学与工程—环境工程]