| 分析北京城市污泥中铅砷镉形态浓度的ICP-MS |
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| 引用本文： | 陈思杨,王娟,李丽娜,韩文轩,江荣风.分析北京城市污泥中铅砷镉形态浓度的ICP-MS[J].光谱学与光谱分析,2009,29(7):1976-1978. |
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| 作者姓名： | 陈思杨 王娟 李丽娜 韩文轩 江荣风 |
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| 作者单位： | 中国农业大学资源与环境学院环境科学与工程系,北京,100193 |
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| 基金项目： | 国家科技支撑计划，中国农业大学科研启动项目，国家大学生科研创新计划项目 |
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| 摘 要： | 城市污泥中重金属的难降解和高毒性限制了污泥的资源化利用.以北京G和Q污水处理厂的压滤出厂污泥为实验材料,采用BCR三步浸提法对污泥中铅砷镉Pb,As,Cd的三种形态进行提取,以HNO3-HClO4进行全量消解,利用ICP-MS检测Pb,As,Cd的全量和各形态的含量,从而为北京城市污泥的资源开发研究提供基础数据.实验结果表明,北京城市污泥中Pb和Cd含量比上世纪末明显降低:其中,G污泥中Pb,As,Cd的全量(干重)分别为19.60,37.96和1.34 mg·kg-1,而Q污泥中分别为19.58,23.46和2.30 mg·kg-1;两种污泥中Pb含量相差甚微,G污泥中As明显高于Q污泥,而Cd则显著低于后者;两种污泥中相应金属的三种形态的变化趋势基本一致:Pb与As以HAc酸溶态为主,H2O2可氧化态最少;而Cd主要以NH2OH-HCl可还原态存在,HAc酸溶态最少.三种重金属中生物毒性大的形态均占70%以上.
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| 关 键 词： | 城市污泥 重金属 形态分析 含量测定 |
| 收稿时间： | 2008/6/10 |
Content Determination of Different Species of Pb,As,and Cd in the Municipal Sewage Sludge of Beijing with ICP-MS |
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| CHEN Si-yang,WANG Juan,LI Lina,HAN We-xuan,JIANG Rong-feng.Content Determination of Different Species of Pb,As,and Cd in the Municipal Sewage Sludge of Beijing with ICP-MS[J].Spectroscopy and Spectral Analysis,2009,29(7):1976-1978. |
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| Authors: | CHEN Si-yang WANG Juan LI Lina HAN We-xuan JIANG Rong-feng |
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| Institution: | CHEN Si-yang,WANG Juan,LI Li-na,HAN We-xuan,JIANG Rong-feng Department of Environmental Science , Engineering,China Agricultural University,Beijing 100193,China |
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| Abstract: | Heavy metals in municipal sewage sludge can limit the utilization of sludge resources,due to their recalcitrant characteristics and harmful effects.Here,ICP-MS was used to determine the total and special content of Pb,As and Cd in the sewage sludge from G and Q Wastewater Treatment Plants,Beijing.The air-dried samples were dissolved in HNO3-HClO4 before the total content determination,or,sequentially extracted with BCR three-step method before special content determination for the heavy metals.The total con... |
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| Keywords: | Sewage sludge Heavy metals Speciation analysis Content determination |
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