| 崇明东滩湿地沉积物砷的形态特征 |
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| 引用本文： | 朱立峰,郑祥民,周立旻,王永杰.崇明东滩湿地沉积物砷的形态特征[J].城市环境与城市生态,2009(5). |
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| 作者姓名： | 朱立峰 郑祥民 周立旻 王永杰 |
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| 作者单位： | 华东师范大学地理信息科学教育部重点实验室 |
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| 基金项目： | 上海市科委重大项目(07DZ12038); 上海市优秀学科带头人项目(07XD14010) |
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| 摘 要： | 于2008年4月在崇明东滩湿地开展野外调查,采集表层沉积物样品,参考Walter W W等提出的砷5步提取法进行总砷、砷的形态分析。结果表明:东滩湿地沉积物总砷含量5.33~19.74 mg/kg,各形态砷所占比例:弱交换态0.6%(0.5%~0.7%);强交换态5%(3%~7%);非晶形铁铝锰氧化物结合态28%(26%~29%);晶形铁铝锰氧化物结合态21%(19%~24%);残渣态46%(42%~51%)。
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| 关 键 词： | 崇明东滩 湿地 沉积物 砷 |
Arsenic Morphological Characteristics in Sediments in Chongming Dongtan |
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| ZHU Li-feng,ZHENG Xiang-min,ZHOU Li-min,WANG Yong-jie.Arsenic Morphological Characteristics in Sediments in Chongming Dongtan[J].Urban Environment & Urban Ecology,2009(5). |
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| Authors: | ZHU Li-feng ZHENG Xiang-min ZHOU Li-min WANG Yong-jie |
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| Institution: | ZHU Li-feng,ZHENG Xiang-min,ZHOU Li-min,WANG Yong-jie(Key Laboratory of Geographic Information Science of Ministry of Education,East China Normal University,Shanghai 200062,China) |
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| Abstract: | Field work was conducted in wetland in Chongming Island in April,2008.Surface sediment samples were collected to analyze total arsenic and different arsenic species.Results showed that the concentrations of total arsenic varied from 5.33 mg/kg to 19.74 mg/kg.Different species of arsenic accounted for the total arsenic concentration(%): non-specifically sorbed 0.6%(0.5%～0.7%);specifically-sorbed 5%(3%～7%);amorphous and poorly-crystallized hydrous oxides of Fe and Al and Mn 28%(26%～29%);well-crystallized hydr... |
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| Keywords: | Chongming Dongtan wetland sediment arsenic |
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