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贵阳城区垃圾站周边地表灰尘重金属水平及季节分异
引用本文:胡军,李晓燕,曹益金. 贵阳城区垃圾站周边地表灰尘重金属水平及季节分异[J]. 地球与环境, 2012, 40(4): 584-588
作者姓名:胡军  李晓燕  曹益金
作者单位:1. 贵州省环境科学研究设计院,贵阳,550081
2. 贵州师范大学地理与环境科学学院,贵阳,550001
基金项目:国家自然科学基金项目,贵州省科学技术基金,贵州省科技支撑计划课题
摘    要:以贵阳城区垃圾转运站为研究对象,分别于夏季(7月)和冬季(2月)在垃圾站周边采集灰尘样品共26个,研究垃圾转运站地表灰尘重金属水平及冬、夏季节分布规律。结果显示,贵阳市城区垃圾站地表灰尘As、Cd、Cu、Ni、Pb和Zn的几何平均值分别为19.8、0.975、156、43.4、99.1和416mg/kg,与贵州省土壤背景值相比,Cd、Cu和Pb累积较重,As和Ni累积较轻。位于次级街道的垃圾站地表灰尘重金属水平显著高于位于城市主干道的垃圾站,垃圾站周边环境和清洁程度的不同可能是导致地表灰尘重金属空间差异的主要原因。贵阳市城区垃圾站灰尘重金属冬、夏季节分异总体表现不明显,但位于次级街道的垃圾站地表灰尘Cd和Pb含量冬季高于夏季。

关 键 词:重金属  灰尘  垃圾站  贵阳市

The Pollution Status of Dust Heavy Metals around Refuse Transfer Stations in Guiyang City
HU Jun,LI Xiao-yan,CAO Yi-jin. The Pollution Status of Dust Heavy Metals around Refuse Transfer Stations in Guiyang City[J]. Earth and Environment, 2012, 40(4): 584-588
Authors:HU Jun  LI Xiao-yan  CAO Yi-jin
Affiliation:1.Guizhou Institute of Environmental Science and Designing,Guiyang 550001,China; 2.School of Geographic and Environmental Sciences,Guizhou Normal University,Guiyang 550001,China)
Abstract:A survey was conducted to investigate the content distribution of heavy metals in dusts around garbage stations in Guiyang based on 26 dust samples collected in summer and winter.The results showed that the geometric concentrations of As,Cd,Cu,Ni,Pb and Zn around garbage stations in Guiyang were 19.8,0.975,156,43.4,99.1 and 416 mg/kg,respectively.Compared to the elemental background values of Guizhou soil,the data showed that Cd,Cu and Zn were relatively heavily accumulated while As and Ni were slightly accumulated.The garbage stations located in secondary streets had higher heavy metal concentrations in dust than those located in main thoroughfares,which were mainly conducted by different environments and the cleaning state of these garbage stations.For all garbage stations,there was no significant difference in heavy metal concentrations in summer and winter,while the garbage stations located in the secondary streets had higher concentrations of Cd and Pb in winter than in summer.
Keywords:heavy metal  dust  garbage station  Guiyang
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