济南市环境空气VOCs污染特征及来源识别  

Pollution Characteristics and Source Identification of VOCs in Ambient Air of Ji'nan

作　　者：刘泽常[1] 李娜[1] 侯鲁健 吕波 

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101 [2]济南市环境监测中心站,山东济南250014

出　　处：《中国环境监测》2014年第6期83-88,共6页Environmental Monitoring in China

摘　　要：对济南市2010年6月至2012年5月环境空气中56种挥发性有机污染物（VOCs）进行在线气相色谱监测,研究其污染特征并识别其主要来源。结果表明,该期间总挥发性有机化合物（TVOCs）变化规律基本一致,其平均浓度水平夏季〉冬季〉秋季〉春季;TVOCs浓度的日变化趋势呈双峰分布,与早晚交通高峰相吻合;济南市城区环境空气中VOCs的主要物种是C3~C5的烷烃、丙烯、顺-2-丁烯、甲苯和间、对二甲苯等;不同季节环境空气中VOCs的主要物种基本一致,夏季烯烃所占比重高于其他季节;烷烃、烯烃与TVOCs的浓度日变化趋势相似,呈明显的双峰状,而芳香烃浓度日变化规律双峰特征不明显。济南市城区VOCs的主要来源为汽车尾气、工业源、燃烧源。On-line gas chromatographic was used to monitor 56 kinds of Volatile Organic Compounds （VOCs） between July 2010 and May 2012 in Jinan city for studying the pollution characteristic and identifying the main sources of VOCs. The result indicated that, changing laws of Total VOCs （TVOCs） both in the year of 2010--2011 and the year of 2011--2012 and the level of average concentration of TVOCs follow the order as： summer 〉 winter 〉 autumn 〉 spring. For the daily variation of TVOCs, both the alkane and the alkene display bimodal distribution and consistent with rush hours in morning and evening. C3-C5 alkanes, propylene, eis-2-butene, toluene and m/p-xyleneand as the main species of VOCs show the similarity in different seasons. The level of alkanes in summer is higher than it in other seasons. The variation trend of concentrations of alkanes and alkenes show that double-peak shape obviously, which are similar with TVOCs, however the variation regularity of bimodal characteristics of the concentration of aromatic hydrocarbon shows it inconspicuous. The result shows resources of VOCs are automobile exhaust, industry and combustion in this study.

关 键 词：VOCS 污染特征 来源识别 济南市 

分 类 号：X823[环境科学与工程—环境工程]