生活垃圾填埋场空气中VOCs组成及年际变化

采用SUMMA罐采样-气相色谱-质谱法采集并分析了2006—2010年4、10月上海某生活垃圾填埋场及周边环境空气中挥发性有机物(VOCs)的种类和含量变化情况。结果表明,共检测出34种VOCs化合物,以单环芳烃、甲基乙基酮、卤代脂肪烃为主,其中19种化合物属于美国环保局重点控制的空气中有害污染物;填埋区作业面是填埋堆体内部VOCs释放的重要途径之一,其中甲基乙基酮、甲苯、乙苯、间/对-二甲苯对TVOCs质量浓度贡献率超过60%;生活垃圾填埋场及周边环境空气中TVOCs质量浓度年季变化较稳定,但同年度内秋季浓度高于春季。

The Composition and Yearly Variation of Volatile Organic Compounds in Ambient Air around Landfill Area

SUMMA container-GC-MS method was used to identify and quantify the VOCs in ambient air around landfillo area in shanghai from 2006 to 2010 in April and October.Results showed that 34 kinds of trace VOCs, including 19 kinds USEPA priority controlled pollutants were detected, monocyclic aromatics, methyl ethyl ketone, aliphatic halogenated hydrocarbon were mainly; The work surface of the landfill area was one of the important emission source for the VOCs within the landfill, and in which that the concentrations of methyl ethyl ketone, toluene, ethylbenzene, m/p-xylene were more than 60% TVOCs; The yearly variation of TVOCs concentrations for the landfill and ambient air were stable and TVOCs concentrations were higher in the Autumn than in the Spring of the same year.