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宁波市大气挥发性有机物污染特征及关键活性组分

郑伟巍 毕晓辉 吴建会 冯银厂 傅晓钦 翁燕波 朱艳芳

郑伟巍, 毕晓辉, 吴建会, 冯银厂, 傅晓钦, 翁燕波, 朱艳芳. 宁波市大气挥发性有机物污染特征及关键活性组分[J]. 环境科学研究, 2014, 27(12): 1411-1419.
引用本文: 郑伟巍, 毕晓辉, 吴建会, 冯银厂, 傅晓钦, 翁燕波, 朱艳芳. 宁波市大气挥发性有机物污染特征及关键活性组分[J]. 环境科学研究, 2014, 27(12): 1411-1419.
ZHENG Wei-wei, BI Xiao-hui, WU Jian-hui, FENG Yin-chang, FU Xiao-qin, WENG Yan-bo, ZHU Yan-fang. Pollution Characteristics and Key Reactive Species of Ambient VOCs in Ningbo City[J]. Research of Environmental Sciences, 2014, 27(12): 1411-1419.
Citation: ZHENG Wei-wei, BI Xiao-hui, WU Jian-hui, FENG Yin-chang, FU Xiao-qin, WENG Yan-bo, ZHU Yan-fang. Pollution Characteristics and Key Reactive Species of Ambient VOCs in Ningbo City[J]. Research of Environmental Sciences, 2014, 27(12): 1411-1419.

宁波市大气挥发性有机物污染特征及关键活性组分

基金项目: 国家自然科学基金项目(41205089/D0510,21207069/B070601)

Pollution Characteristics and Key Reactive Species of Ambient VOCs in Ningbo City

  • 摘要: 于2010年冬、春、秋三季,在宁波市3个采样点(市区、镇海站、北仑站)进行大气VOCs(挥发性有机物)样品的采集与分析,并对36种大气VOCs组分进行测量,分析宁波市大气VOCs组分组成及其时空分布特征. 用各组分的·OH反应速率表征其化学反应活性,以识别宁波市大气VOCs的关键活性组分. 结果表明:宁波市ρ(VOCs)(36种大气VOCs组分的平均质量浓度)在3个季节的平均值为198.2 μg/m3,主要成分为烷烃(48.6%)、芳香烃(33.6%)、烯烃(17.8%). ρ(VOCs)的季节变化表现为冬季(298.5 μg/m3)>秋季(174.1 μg/m3)>春季(122.0 μg/m3),空间上表现为市区(161.3 μg/m3)<镇海(225.0 μg/m3)<北仑(208.2 μg/m3). 宁波市大气VOCs的化学组成相对稳定,·OH平均反应速率常数和乙烯相当,总化学反应活性较强;对化学反应活性贡献最大的是烯烃,其体积混合比约占VOCs体积混合比的22%,但对VOCs化学反应活性的贡献达64%以上;关键活性组分为1-丁烯、反-2-丁烯、间,对-二甲苯、乙烯和戊烯.

     

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出版历程
  • 收稿日期:  2014-01-25
  • 修回日期:  2014-07-25
  • 刊出日期:  2014-12-25

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