贵州省森林公园及其他环境下的挥发性有机物特征及臭氧生成潜势分析研究  

A study on the Volatile Organic Compound Characteristics and Ozone Formation Potential in Different Environments in Guizhou Province

作　　者：于晨 赵胡容 王新苗 刘亚曦 Yu Chen;Zhao Hurong;Wang Xinmiao;Liu Yaxi(Moutai Institute,Zunyi,China)

机构地区：[1]茅台学院,贵州遵义

出　　处：《科学技术创新》2024年第16期70-73,共4页Scientific and Technological Innovation

基　　金：贵州省林业科研项目“贵州省典型森林公园向大气环境中释放的挥发性有机物研究”(黔林科合【2022】42号);贵州省教育厅青年项目“贵州省赤水河谷的酱酒生产对近地面大气氧化能力的影响研究”(黔教技【2022】413号);贵州省大学生创新训练项目“贵州省典型森林公园向大气环境中释放的挥发性有机物研究”(S202214625028)。

摘　　要：挥发性有机污染物(VOCs)作为PM2.5及臭氧等二次污染物的前体物,容易引发雾霾、光化学污染等大气环境问题。不同环境中的VOCs的排放特征及来源不同,导致其对环境空气产生的危害程度有所差异。本文分析了贵州省内典型环境空气VOCs物种、浓度及组成差异,研究其来源,并采用等效丙烯浓度法和最大增量反应活性法计算每种VOCs的臭氧生成潜势,探究贡献较大的关键组分。研究发现酱香型白酒产区环境空气VOCs以醇类为主;而森林公园及室内环境空气VOCs以烷烃类为主,其质量浓度占比均在50%以上。就VOCs的臭氧生成潜势而言,酱香型白酒产区及室内环境主要前体物为正己烷,而森林公园前体物以1-丁烯和正十二烷为主。Volatile organic pollutants(VOCs),as precursors of secondary pollutants such as PM2.5 and Ozone,are liable to cause atmospheric environmental problems such as haze and photochemical pollution.The emission characteristics and sources of VOCs in different environment are different,which lead to the difference of the harm degree of VOCs to the Environment Air.The species,concentration and composition of VOCs in typical ambient air in Guizhou province were analyzed,the ozone generation potential of each VOCs was calculated by the equivalent propylene concentration method and the maximum incremental reaction activity method,and the key components contributing greatly were explored.The study found that alcohols were the main VOCs in the ambient air of the maotai-flavor liquor-producing areas,while alkanes were the main VOCs in the ambient air of the Forest Parksand indoor,the proportion of its mass concentration was above 50%.As far as the ozone formation potential of VOCs is concerned,the main precursor in the production area and indoor environment of maotai-flavor liquor is n-hexane,the forest park precursors were mainly 1-butene and N-dodecane.

关 键 词：VOCS 质量浓度 组成 前体物 臭氧生成潜势 

分 类 号：X511[环境科学与工程—环境工程]