重庆市春季不同功能区PM_(10)中多环芳烃的污染特征  

Pollution Characterization of Polycyclic Aromatic Hydrocarbons on the Inhalable Particulates in Spring of Chongqing

作　　者：陈敏[1,2] 张卫东[2] 周志恩[2] 郭志顺[2] 

机构地区：[1]西南大学化学与化工学院,重庆400715 [2]重庆市环境科学研究院,重庆401147

出　　处：《中国环境监测》2013年第1期43-48,共6页Environmental Monitoring in China

摘　　要：2012年4月在重庆市4个不同功能区连续10 d同步采集了大气PM10环境样品,利用气相色谱-质谱法分析测定美国环保局16种优控多环芳烃(PAHs)。结果显示,在重庆主城区PM10中检测到16种优控PAHs,总浓度(∑PAHs)范围为31.68～189.31 ng/m3,平均浓度为108.05 ng/m3。各个功能区大气PM10中PAHs总浓度存在明显差别:交通区(沙坪坝七中)154.47 ng/m3>工业区(大渡口区政府)132.92 ng/m3>居民区(南岸工商大学)105.58 ng/m3>对照区(缙云山风景区)39.16 ng/m3。根据典型污染来源中PAHs的特征比值综合判断,重庆市春季大气中PM10主要来源于燃煤和交通污染的混合源。The inhalable particulates（PM10 ） samples of 4 different functional areas were collected in April 2012 for 10 days at Chongqing. GC-MS was used to determine 16 polyeyclic aromatic hydrocarbons （PAHs） which EPA control preferentially. The results showed that the total concentration range of PAHs was 31.68-189.31 ng/m3, and average concentration was 108.05 ng/m3 in spring. The significant difference in the average value of ∑PAHs during the sampling time as follows： Shapingba at 154.47 ng/m3 , Dadukou at 132. 92 ng/m3 , Nanan at 105.58 ng/m3 ,Jinyunshan at 39. 16 ng/m3. Characteristic ratios of several PAHs showed that coal burning and vehicle emission were the major sources of PMao in Chongqing.

关 键 词：PM10 多环芳烃 特征比值 重庆 

分 类 号：X823[环境科学与工程—环境工程]