随州市环境空气中苯系物的污染特征  

Pollution Characteristics of Benzene Series Compounds in the Environmental Air of Suizhou City

作　　者：王东方[1] 邱海杰 柳华斌 王勇 崔龙哲[1] 赵玉凤[1] 吴桂萍[1] 

机构地区：[1]中南民族大学化学与材料科学学院,湖北武汉430074 [2]随州市环境保护监测站,湖北随州441300

出　　处：《环境科学与技术》2015年第2期94-98,共5页Environmental Science & Technology

基　　金：随州市汽车涂装VOCs防治技术研究(2012HB08);湖北省典型区域及行业挥发性有机物排放标准研究(2013HB05)

摘　　要：2013年1月对随州市环境空气中苯系物(BTEX-苯,甲苯,乙苯和二甲苯)的质量浓度进行了监测,并分析了其变化规律及影响因素。结果表明,随州市环境空气中几种苯系物的浓度差异明显,其中苯的浓度最高,平均浓度为58.92μg/m3,甲苯、乙苯、间,对-二甲苯、邻-二甲苯的平均浓度分别为15.17、7.69、22.46、12.11μg/m3。对比发现,环境空气中苯系物的日间浓度高于夜间,工业区苯系物的浓度高于居住区和商业区。用SPSS软件对监测数据进行了分析,结果表明,溶剂的挥发和涂料喷涂行业是苯的重要来源。苯系物的浓度变化特征与交通尾气排放、化石燃料燃烧、光化学反应活动等密切相关。BTEX including benzene, toluene, ethylbenzene and xylene sampled in ambient air of Suizhou City, Hubei Province was detected in January 2013. The variation law of benzene series compounds concentration and influence factors were analyzed. Results indicated that benzene series compounds concentration in ambient air has obvious difference, with benzene as the highest concentration and up to 58.92 μg/m^3, and concentration of toluene, ethylbenzene, m, p-xylene and oxylene as 15.17, 7.69, 22.46, 12.11 μg/m^3 respectively. By contrast, it was found that the BTEX concentrations were higher in daytime than those in nighttime, and higher in industrial zone than those in residential area and residential area. Monitoring data was analyzed with SPSS software, and the results showed that evaporation of the solvent and coating industry are the important source of benzene. The variation characteristics of BTEX are closely relative to vehicle exhaust emission, fossil fuel combustion and photochemical reactivity.

关 键 词：环境空气 苯系物(BTEX) 污染特征 

分 类 号：X823[环境科学与工程—环境工程]