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| 印染污泥中重金属形态分析及生物有效性 | |
| 引用本文： | 李晓阁,潘静,奚旦立,杨明.印染污泥中重金属形态分析及生物有效性[J].岩矿测试,2009,28(1):10-14. |
| 作者姓名： | 李晓阁 潘静 奚旦立 杨明 |
| 作者单位： | 1. 东华大学环境学院,上海,200051 2. 东华大学环境学院,上海,200051;中国地质科学院生态地球化学重点开放实验室,北京,100037 3. 东华大学分析测试中心,上海,200051 |
| 基金项目： | 科技部国际合作重点项目 |
| 摘 要： | 选取上海某印染厂的印染废水处理后的活性污泥样品,通过盆栽土培试验,用黑麦草对印染污泥进行修复,运用Tessier A连续提取法研究修复后黑麦草根际和非根际印染污泥中铅、铜、镍、锌、镉5种重金属形态的变化,以及重金属的生物有效性与植物中有效态含量之间的关系。结果表明,栽培后根际与非根际环境中各重金属元素具有典型的形态分布特征:铅主要以离子交换态和残渣态存在;铜主要以碳酸盐结合态和残渣态存在;镍由紧结合态(铁锰氧化物结合态+有机结合态)向离子交换态转移;锌的有机结合态和碳酸盐结合态有所增加;镉主要以离子交换态和铁锰氧化物结合态为主,说明镉元素较活泼,具有潜在的环境影响能力,应该给予更多的关注。印染污泥中重金属的生物有效性与重金属元素的性质有关,铜、锌的生物有效性较高,其次是铅,最低是镍、镉。 |
| 关 键 词： | 印染污泥 重金属 形态分析 生物有效性 黑麦草 |
| 收稿时间： | 2008/6/17 0:00:00 |
| 修稿时间： | 2008/9/22 0:00:00 |
Bioavailability and Speciation Analysis of Heavy Metals in Textile Dyeing Sludge |
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| LI Xiao-ge,PAN Jing,XI Dan-li,YANG Ming.Bioavailability and Speciation Analysis of Heavy Metals in Textile Dyeing Sludge[J].Rock and Mineral Analysis,2009,28(1):10-14. | |
| Authors: | LI Xiao-ge PAN Jing XI Dan-li YANG Ming |
| Institution: | 1.College of Environmental Science and Engineering,Donghua University,Shanghai 200051,China;2.The Open Laboratory of Eco-geochemistry,Chinese Academy of Geological Sciences,Beijing 100037,China;3.Research Center of Analysis & Measurement,Donghua University,Shanghai 200051,China) |
| Abstract: | The paper investigates the speciation of heavy metals in textile dyeing sludge samples from Shanghai dyeing plants using Tessier A sequential extraction method. The results show that Cd exists mainly in exchangeable and Fe-Mn oxides fractions, accounting for 47.6% and 23.2% respectively. Therefore the conclusions that Cd is more active than other elements and it has potential impact on environment are draw and more attention should be paid to it. Bioavailability of Pb, Cu, Zn, Ni and Cd was also investigated with textile dyeing sludge samples in a pot scale experiment. Heavy metals in textile dyeing sludge and plants were analyzed after Loliumperenn L. had been grown on the textile dyeing sludge for 60 days. Chemical fractions of textile dyeing sludge were analyzed with a sequential extraction technique. The bioavailability of heavy metals decreased in the order of Cu and Zn>Pb>Ni and Cd. |
| Keywords: | textile dyeing sludge heavy metal speciation analysis bioavailability Loliumperenn L |
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