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Thallium transformation and partitioning during Pb-Zn smelting and environmental implications

机译：铅锌冶炼过程中的转变和分配及其对环境的影响

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摘要

Thallium (TI) is a toxic and non-essential heavy metal. Raw Pb-Zn ores and solid smelting wastes from a large Pb-Zn smelting plant - a typical thallium (TI) pollution source in South China, were investigated in terms of TI distribution and fractionation. A modified IRMM (Institute for Reference Materials and Measurement, Europe) sequential extraction scheme was applied on the samples, in order to uncover the geochemical behavior and transformation of TI during Pb-Zn smelting and to assess the potential environmental risk of TI arising from this plant. Results showed that the Pb-Zn ore materials were relatively enriched with TI (15.1-87.7 mg kg(-1)), while even higher accumulation existed in the electrostatic dust (3280-4050 mg kg(-1)) and acidic waste (13,300 mg kg(-1)). A comparison of TI concentration and fraction distribution in different samples clearly demonstrated the significant role of the ore roasting in TI transformation and mobilization, probably as a result of alteration/decomposition of related minerals followed by TI release and subsequent deposition/co-precipitation on fine surface particles of the electrostatic dust and acidic waste. While only 10-30% of total TI amounts was associated with the exchangeable/acid-extractable fraction of the Pb-Zn ore materials, up to 90% of total TI was found in this fraction of the electrostatic dust and acidic waste. Taking into account the mobility and bioavailability of this fraction, these waste forms may pose significant environmental risk. (C) 2016 Elsevier Ltd. All rights reserved.
机译：hall（TI）是有毒且非必需的重金属。根据TI的分布和分级，研究了来自大型Pb-Zn冶炼厂的粗制Pb-Zn矿石和固体冶炼废料，这是中国南方的典型（污染源。修改后的IRMM（欧洲参考材料与测量研究所）顺序提取方案被应用于样品，以揭示Pb-Zn冶炼过程中TI的地球化学行为和转变，并评估由此引起的TI的潜在环境风险。厂。结果表明，Pb-Zn矿石材料相对富含TI（15.1-87.7 mg kg（-1）），而静电粉尘（3280-4050 mg kg（-1））和酸性废物中的堆积量更高。 13,300毫克kg（-1））。对不同样品中TI浓度和馏分分布的比较清楚地表明，焙烧在TI转化和动员中起着重要作用，这可能是相关矿物发生改变/分解，随后TI释放以及随后的细粉沉积/共沉淀的结果静电灰尘和酸性废物的表面颗粒。虽然只有10-30％的TI总含量与Pb-Zn矿石材料的可交换/可酸萃取的馏分有关，但在这一部分的静电粉尘和酸性废料中却发现了总TI的高达90％。考虑到该部分的流动性和生物利用度，这些废物形式可能构成重大的环境风险。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Environmental Pollution》 |2016年第5期|77-89|共13页
  • 作者

    Liu Juan; Wang Jin; Chen Yongheng; Xie Xiaofan; Qi Jianying; Lippold Holger; Luo Dinggui; Wang Chunlin; Su Longxiao; He Lucheng; Wu Qiwei;

  • 作者单位

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

    Minist Environm Protect, South China Inst Environm Sci, Guangzhou, Peoples R China;

    Helmholtz Zentrum Dresden Rossendorf eV HZDR, Inst Ressourcenokol, Dresden, Germany;

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

    Guangdong Prov Acad Environm Sci, Guangzhou, Guangdong, Peoples R China;

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

    Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China|Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Thallium fraction; Pb-Zn smelting; Electrostatic dust; Acidic waste; IRMM sequential extraction;

    机译：hall馏分;铅锌冶炼;静电除尘;酸性废物;IRMM连续萃取;

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