乌鲁木齐夏季大气降尘中重金属的分布特征  

THE DISTRIBUTION OF HEAVY METALS IN ATMOSPHERIC DUSTFALL DURING SUMMER IN URUMQI

作　　者：张克磊[1] 朱建雯[1] 魏疆[2] 

机构地区：[1]新疆农业大学草业与环境科学学院,乌鲁木齐830052 [2]新疆大学资源与环境科学学院,乌鲁木齐830046

出　　处：《环境工程》2014年第2期98-101,106,共5页Environmental Engineering

基　　金：国家自然科学基金(41161074)

摘　　要：对乌鲁木齐市不同功能区大气降尘中的重金属采用ICP-AES(电感耦合等离子体原子发射光谱)进行分析测试。结果表明:夏季大气降尘中重金属的含量由高至低依次为:Cr>Mn>Zn>As>Pb>Ni>Cd。重金属在不同功能区的总体分布特征表现为商业区>工业区>居民区>文化区>郊区。利用地积类指数法,分析结果表明大气降尘中As、Cr为重污染,Zn、Ni、Cd、Pb为中等污染。The heavy metals in air dustfall of different functional areas in Urumqi were analyzed and tested by CP - AES （ inductively coupled plasma-atomic emission spectrometry）. The results show that the content of heavy metals in atmospheric dustfall was in the order： Cr 〉 Mn 〉 Zn 〉 As 〉 Pb 〉 Ni 〉 Cd and the overall distribution characteristics of heavy metals in different functional areas were in the order： commercial 〉 district 〉 industrial area 〉 residential area 〉 cultural region 〉 suburb. Based on the geoaccumulation index, in the air dustfall As and Cr was in serious pollution, but Zn, Ni, Cd and Pb was in moderate pollution.

关 键 词：空间分布 大气污染 污染评价 

分 类 号：X51[环境科学与工程—环境工程]