泉州市街道灰尘重金属污染评价  

ASSESSMENT OF POLLUTION BY HEAVY METAL STREET DUST IN THE QUANZHOU CITY

作　　者：刘海婷[1] 于瑞莲[1] 胡恭任[1] 陈洪[1] 涂湘林[2] 

机构地区：[1]华侨大学环境科学与工程系,福建厦门361021 [2]中国科学院广州地球化学研究所,广东广州510640

出　　处：《矿物岩石》2010年第3期116-120,共5页Mineralogy and Petrology

基　　金：国家自然科学基金(40673061);东华理工大学教育部重点实验室开放基金(070714)

摘　　要：对泉州市街道灰尘中8种重金属元素Cu,Zn,Pb,Ni,Cr,Cd,Mn,Co的含量水平和分布特征进行分析,并采用地积累指数法对其污染状况进行评价。结果表明,泉州市街道灰尘中上述重金属元素平均含量分别是泉州市土壤背景值的7.12,27.36,12.80,6.94,2.29,28.49,1.64,3.2倍;与国内外城市街道灰尘中重金属平均含量相比,泉州市街道灰尘中上述重金属元素平均含量处于中等—偏高水平;Cr,Cu,Pb在工业区含量明显高于其它功能区,而Cr,Cu,Co,Ni含量在农业区最低。地累积指数评价结果表明,Zn为偏重度污染,Cd为中度污染,Cu,Pb,Ni为偏中度污染,Co为轻度污染,Cr,Mn为无污染。The contents and distribution character of Cu,Zn,Pb,Ni,Cr,Cd,Mn and Co in the street dust of Quanzhou were analyzed.The pollution degree of heavy metals was assessed by using the Index of geo-accumulation.The results revealed that the contents of the above heavy metals in the street dust were 7.12,27.36,12.80,6.94,2.29,28.49,1.64 and 3.2 times over the soil background value of Quanzhou city.Compared with other cities at home and abroad,the average contents of the above heavy metals were at medium-higher levels.The average contents of Cr,Cu and Pb were the highest in the industrial area while the contents of Cr,Cu,Co and Ni were the lowest in the agricultural area.The geo-accumulation indexes showed that Zn was at moderate to heavy pollution level,Cd was at moderate pollution level,Cu,Pb and Ni were all at low to moderate pollution level,Co was at a light pollution,Cr and Mn were at a clean level.

关 键 词：街道灰尘 重金属污染评价 泉州市 

分 类 号：X513[环境科学与工程—环境工程]