我国大气VOCs的监测技术和污染特征研究进展

A Review of Researches on Atmospheric VOCs Monitoring Technique and Pollution Characteristics in China

近年来,挥发性有机物(VOCs)作为光化学烟雾的前体物、灰霾天气形成的关键因素,引起国内外学者的广泛关注。该研究综述了我国大气VOCs的源与汇、监测技术和污染特征。首先概述了大气VOCs的源与汇,内容包括我国VOCs的自然源、人为源及主要的去除途径。然后讨论了国内外VOCs的监测技术,分析总结了我国现有的相关环境管理标准与技术规范。重点对我国近几年典型城市大气中VOCs的污染特征进行了归纳和对比,从检出VOCs种类、浓度释放水平和释放来源方面分析了各地区VOCs的污染水平,为大气环境的保护及污染防治提供科学依据。最后,在总结现有研究进展的基础上,提出了现阶段研究中存在的问题,展望了未来研究的主要方向。

In recent years,volatile organic compounds( VOCs) of precursor of photochemical smog and the key factors of the formation of hazy weather have aroused extensive concerns among scholars both at home and abroad. This is a review retrospecting and summarizing researches on source and sink,monitoring technology and pollution characteristics of atmospheric VOCs,in China. The review began with generalizing the source and sink of VOCs,including natural and anthropogenic sources of VOCs and main paths of removing the substances. Then the review went on discussing VOCs monitoring techniques used at home and abroad,analyzing and summarizing existing relevant environmental management standards and technical specifications in China,and collating and comparing VOCs pollution characteristics in typical urban atmospheres in recent years. From the aspects of species of VOCs detected,their concentration release levels and sources of releases,atmospheric VOCs pollution levels of various regions were evaluated, providing certain scientific basis for protection and pollution prevention of the atmospheric environment. In the end,based on the summarization of the current research progresses,some main problems existing in the current studies are pointed out and future directions and development are prospected.