| 污泥中重金属的形态分析及其可浸出性 |
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| 引用本文： | 骆爱兰,余向阳. 污泥中重金属的形态分析及其可浸出性[J]. 光谱实验室, 2011, 28(6): 3153-3157 |
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| 作者姓名： | 骆爱兰 余向阳 |
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| 作者单位： | 1. 盐城工学院化学与生物工程学院 盐城市迎宾大道9号224003
2. 江苏省农业科学院食品质量安全与检测研究所 南京市钟灵街50号210014 |
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| 基金项目： | 江苏省农业科技自主创新资金[cx(09)632]; 国家支撑计划子课题(No.2006BAD08A03) |
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| 摘 要： | 以自来水厂和污水处理厂的污泥为研究对象,采用Tessier五步法和火焰原子吸收光谱法研究污泥中重金属（Zn、Cu、Cd、Ni、Mn）含量、形态分布以及可浸出性。结果发现,在自来水厂污泥和污水处理厂污泥中重金属总量大小依次为Zn〉Mn〉Ni〉Cu〉Cd,Zn〉Mn〉Cu〉Ni〉Cd,污泥中Zn含量最高,为448.17mg.kg-1;Cd含量最低,为27.17mg.kg-1,超过国家标准,限制了污泥的农用。Tessier形态分析结果表明,污泥中Zn、Cu、Cd主要以稳定态存在;Mn主要以有效态存在,潜在的迁移性和植物毒性最值得关注;Cu浸出率最高,为14.8%,Zn浸出率最低,为0.11%,因此浸出率不仅与金属和污泥的特性有关,而且金属在污泥中赋存的化学形态对其可浸出性也有重要的影响。
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| 关 键 词： | 污泥 重金属 形态分析 浸出 |
Morphological Analysis and Leachability of Heavy Metals in Sludge |
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| LUO Ai-Lan,YU Xiang-Yang. Morphological Analysis and Leachability of Heavy Metals in Sludge[J]. Chinese Journal of Spectroscopy Laboratory, 2011, 28(6): 3153-3157 |
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| Authors: | LUO Ai-Lan YU Xiang-Yang |
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| Affiliation: | LUO Ai-Lan YU Xiang-Yanga(School of Chemical and Biological Engineering,Yancheng Institute of Technology,Yancheng,Jiangsu 224003,P.R.China)a(Institute of Food Quality Safety and Inspection,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,P.R.China) |
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| Abstract: | Total amounts and morphological analysis of heavy metals including Cu,Zn,Cd,Ni,Mn in the sludge from waterworks and wastewater treatment plant were determined by five steps sequential extraction Tessier method and atomic absorption spectrometer method,and the leachability was also studied.Results showed that the total amounts of heavy metals in sludge from waterworks in the order from high to low were Zn>Mn>Ni>Cu>Cd,and the total amount of heavy metals in sludge from wastewater treatment plant were Zn>Mn>Cu... |
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| Keywords: | Sludge Heavy Metal Morphological Analysis Leachability |
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