2019年8~9月江苏省重点工业园区挥发性有机物污染特征及管控效果评估

Pollution Characteristics and Control Effect Evaluation of Volatile Organic Compounds in Key Industrial Parks in Jiangsu Province from August to September 2019

为研究2019年江苏省一次专项管控期间VOCs浓度的变化情况,于8月13日~9月30日在13个设区市重点工业园区开展VOCs连续观测,分析江苏省工业园区VOCs浓度现状及分布特征,对各市工业园区管控期间VOCs的减排效果进行评估并给出相应对策建议。结果表明:VOCs是江苏省臭氧生成的主要前体物,13个设区市典型工业园区VOCs体积浓度为26.2×10^(-9),呈现“南高北低”态势,烷烃、烯烃、炔烃和芳香烃物种对臭氧生成贡献的占比分别为16.7%、44.0%、0.6%和39.1%;管控有效减缓了臭氧浓度上升的幅度,但不同地区对臭氧的生成贡献较大的物种不同,建立优先控制物种数据库,既达到调控目的,又减少对社会经济的影响。

In order to study the change of VOCs concentration during a special control in Jiangsu Province in 2019,this study carried out continuous observation of VOCs in 13 key industrial parks from August 13 to September 30,and analyzed the current status and distribution characteristics of VOCs concentration in industrial parks in Jiangsu Province.The effect of VOCs emission reduction during the management and control of industrial parks in various cities is evaluated and corresponding countermeasures and suggestions are given.The results showed that VOCs was the main precursor of ozone generation in Jiangsu Province.The volume concentration of VOCs in 13 typical industrial parks was 26.2×10^(-9),showing a trend of " high in the south and low in the north".The contribution of alkane,olefin,alkyneen and aromatic hydrocarbon species to ozone generation was 16.7%,44.0%,0.6%and 39.1%,respectively.The control has effectively slowed down the increase of ozone concentration,but different regions have different species that contribute more to the generation of ozone.The establishment of a priority control species database can not only achieve the purpose of regulation,but also reduce the impact on social economy.