工业园区典型VOCs污染过程精细化溯源  

Fine source tracing of typical VOCs pollution episodes around industrial park

作　　者：王东方 WANG Dong-fang(Shanghai Jianke Environmental Technology Co.Ltd,Shanghai 201108,China)

机构地区：[1]上海建科环境技术有限公司,上海201108

出　　处：《中国环境科学》2022年第2期585-592,共8页China Environmental Science

基　　金：上海市科技攻关项目(20dz1204009);上海市生态环境局科研项目(沪环科2020-39)。

摘　　要：以上海某化工工业园区为目标区域,针对典型的大气VOCs污染过程,通过耦合高时间分辨率GC-MS在线监测、拉格朗日大气扩散模型、VOCs源谱及相似度分析等技术手段,开展了小尺度大气VOCs的精细化溯源.结果表明,针对敏感点监测到的VOCs高值时刻,拉格朗日大气扩散模型能够追踪主要的气团来向及企业潜在贡献,空间分辨率达到110m×110m;进一步结合受体-源谱之间的相似度分析,可以对潜在来源对象进行二次识别,高相似度企业余弦相似系数可以达到0.8以上(最高为1),溯源结果具有较高的精准度和可信度.A chemical industrial park in Shanghai was selected as the target area.Aiming at the typical process of atmospheric VOCs pollution,sources of small-scale atmospheric VOCs were traced by coupling high-time resolution GC-MS measurement,Lagrange atmospheric dispersion model,VOCs source profiles and similarity analysis.The Lagrange atmospheric dispersion model can track the direction of the main air masses and the potential contribution of the enterprise with a spatial resolution of 110m×110m;Based on the similarity analysis between the receptor and source profiles,the potential sources can be furtherly identified.The cosine similarity coefficient of high similarity enterprises can reach more than 0.8(maximum of 1),indicating high accuracy and credibility of the source apportionment results.

关 键 词：工业园区 挥发性有机物 大气扩散模型 源谱 相似系数 

分 类 号：X511[环境科学与工程—环境工程]