环境空气VOCs监测技术及政策

Ambient Air VOCs Monitoring Technology and Policy

近年随着工业化进程的加快,我国VOCs排放量大幅上升,导致以PM2.5、臭氧等二次污染为特征的区域大气污染问题频发,对应的VOCs监测技术也不断发展。按照VOCs监测方法的发展总结了VOCs离线监测、在线监测、走航监测等方法,离线监测定性与定量准确,测试灵敏度较高,但离线监测技术时间分辨率低、外界干扰因素多,分析结果不具备实时性;在线监测技术具有小时级别的时间分辨率,同时减少了监测过程中外界因素造成的各种干扰,能够对环境空气进行近实时监测;VOCs走航一种新兴的快速诊断技术,通过对城市进行VOCs污染画像,弄清污染物的浓度、种类、来源及其空间分布、排放规律等,从而实现VOCs精细化管理,差异化管控,靶向治理,梳理VOCs监管相关政策。

In recent years, with the acceleration of industrialization, China’s VOCs emissions have risen sharp-ly, leading to PM2.5, ozone and other secondary pollution as the characteristics of regional air pol-lution frequently, the corresponding VOCs monitoring technology is also developing. According to the development of VOCs monitoring methods, summarizes the methods of offline monitoring, online monitoring and mobile monitoring of VOCs. Off-line monitoring is accurate in both qualitative and quantitative aspects and has high sensitivity in testing. However, offline monitoring technology has low temporal resolution and many external interference factors, and the analysis results do not have real-time capability. On-line monitoring technology has hourly time resolution, while reducing various interference caused by external factors in the monitoring process, can carry out near real-time monitoring of ambient air. VOCs mobile monitoring is an emerging rapid diagnostic technology, through the city of VOCs pollution portrait, clarify the concentration of pollutants, types, sources and their spatial distribution, emission rules, so as to achieve VOCs fine management, differentiated control, targeted governance, combing VOCs regulatory policies.