重庆市商品粮基地土壤重金属污染现状与评价 |
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引用本文: | 黄进,魏世强. 重庆市商品粮基地土壤重金属污染现状与评价[J]. 安徽农业科学, 2009, 37(4): 1752-1755 |
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作者姓名: | 黄进 魏世强 |
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作者单位: | 1. 淮阴师范学院化学系,江苏,淮安,223300 2. 西南大学资源环境学院,重庆,400716 |
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基金项目: | 重庆市科学技术委员会科技攻关项目 |
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摘 要: | 对重庆市17个商品粮基地103个水稻土进行采样分析和评价。结果表明,调查土壤中Cd、Cu、Zn、Pb、Hg5种重金属平均浓度分别为(0.390±0.180)、(18.526±10.400)、(89.382±22.800)、(55.069±17.600)、(0.098±0.076)mg/kg。17个商品粮基地间的Cd、Cu、Pb、Hg含量各自存在极显著差异(P〈0.01),而Zn含量差异不显著(P=0.05)。环境质量综合评价显示,重庆市商品粮基地部分水稻土受到重金属污染,污染程度为潼南〉秀山〉綦江〉永川〉合川〉荣昌〉大足〉南川〉江津〉梁平〉垫江〉长寿〉铜梁〉开县〉忠县〉渝北〉巴南,主要污染物为Cd。
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关 键 词: | 重庆市 商品粮基地 重金属 污染 评价 |
Status Quo and Assessment on Heavy Metal Pollutions of Soils in Food-Supply Bases of Chongqing |
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Affiliation: | HUANG Jin et al (Department of Chemistry, Huaiyin Normal College, Huaian, Jiangsu 223300) |
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Abstract: | This study aimed to analyze and assess 103 representative soil samples from 17 food-supply bases in Chongqing.The results showed that the average contents of heavy metals was respectively Cd(0.390±0.180),Cu(18.526±10.400),Zn(89.382±22.800),Pb(55.069±17.600) and Hg(0.098±0.076) mg/kg,and the contents of Cd,Cu,Pb and Hg in soils from different bases showed significant differences(P<0.01),but the Zn content varied slightly(P=0.05).The heavy metal pollution degree in different bases followed a sequence of Tonglan>Xiushan>Qijiang>Yongchuan>Hechuan>Rongcang>Dazu>Nanchuan>Jiangjin>Liangpin>Dianjiang>Changshou>Tongliang>Kaixian>Zhongxian>Yubei>Banan,and mostly by Cd. |
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Keywords: | Chongqing Food-supply bases Heavy metals Pollution Assessment |
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