摘要
新疆库尔勒市采集54个地表灰尘样品,分析地表灰尘中Hg、Cd、As、Pb、Cr与Cu等6种微量元素含量。采用地质累积指数法,分析微量元素污染特征,利用GIS技术,分析微量元素空间分布格局,采用相关分析法和聚类分析法,讨论微量元素主要来源。结果表明:库尔勒市地表灰尘中Hg、Cd、Pb、Cr和Cu等元素含量平均值分别为新疆土壤背景值的3.71、1.87、1.96、1.14和1.29倍,富集较明显。地表灰尘中Hg和Pb处于轻度污染,Cd、As、Cr与Cu处于无污染水平。从空间分布格局来看,微量元素污染高值区主要分布于研究区东北部与北部区域。多元统计分析结果表明,研究区地表灰尘中As受到成土母质的影响,Hg受到城市商业活动与生活污染的影响,Cd、Cr、Cu与Pb等4种元素主要受到交通、工业排放的影响。
A total of 54 surface dust samples in Korla City,Xinjiang were collected,and the contents of six trace elements,such as Hg,Cd,As,Pb,Cr and Cu,were analyzed.The pollution characteristics of trace elements were analyzed using the geo-accumulation index,while the spatial distribution patterns of trace elements were analyzed based on GIS technology,and the main sources of trace elements were discussed using correlation analysis and cluster analysis.The obtained results indicate that:the average contents of Hg,Cd,Pb,Cr and Cu of surface dust in Korla City are 3.71,1.87,1.96,1.14 and 1.29 times of the background values of soils in Xinjiang,respectively,with higher enrichment level.Surface dusts are lightly polluted by Hg and Pb,while not polluted by Cd,As,Cr and Cu.The spatial distribution patterns show that the higher polluted areas of trace elements distribute mainly in the northeastern and northern parts in the study area.Results of multivariate statistical analysis indicate that As in the surface dust of study area is mainly originated from soil parent material,while Hg is affected by commercial and domestic pollution sources,and Cd,Cr,Cu and Pb are mainly affected by traffic and industrial emission.
作者
阿地拉·艾来提
麦麦提吐尔逊·艾则孜
姑力巴努·艾尼
王维维
ADILA Hayrat;MAMATTURSUN Eziz;GULBANU Hini;WANG Weiwei(College of Geographical Science and Tourism,Xinjiang Normal University,I runup 830054,China;Xinjiang Laboratory of Lake Environment and Resources in Arid Zone,Xinjiang Nonnal University,Urumqi 830054,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2020年第7期170-176,共7页
Journal of Arid Land Resources and Environment
基金
国家自然科学基金项目(41867076
41561073)资助。
关键词
地表灰尘
微量元素
空间分布
来源
库尔勒市
surface dust
trace elements
spatial distribution
source
Korla City
作者简介
阿地拉·艾来提(1995-),女,维吾尔族,新疆阿图什人,硕士研究生,主要从事城市土壤环境安全研究。Email:adila08@126.com;通讯作者:麦麦提吐尔逊·艾则孜(1981-),男,维吾尔族,新疆喀什人,副教授,博士,主要从事绿洲土壤环境安全研究。Email:oasiseco@126.com。
