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

被引：89

作者：

Liu, Juan ^{[1
,2
]}

Wang, Jin ^{[1
,2
]}

Chen, Yongheng ^{[1
,2
]}

Xie, Xiaofan ^{[1
,2
]}

Qi, Jianying ^{[3
]}

Lippold, Holger ^{[4
]}

Luo, Dinggui ^{[1
,2
]}

Wang, Chunlin ^{[5
]}

Su, Longxiao ^{[1
,2
]}

He, Lucheng ^{[1
,2
]}

Wu, Qiwei ^{[1
,2
]}

机构：

[1] Guangzhou Univ, Innovat Ctr, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China

[2] Guangzhou Univ, Key Lab Waters Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China

[3] Minist Environm Protect, South China Inst Environm Sci, Guangzhou, Peoples R China

[4] Helmholtz Zentrum Dresden Rossendorf eV HZDR, Inst Ressourcenokol, Dresden, Germany

[5] Guangdong Prov Acad Environm Sci, Guangzhou, Guangdong, Peoples R China

来源：

ENVIRONMENTAL POLLUTION | 2016年 / 212卷

基金：

中国国家自然科学基金;

关键词：

Thallium fraction; Pb-Zn smelting; Electrostatic dust; Acidic waste; IRMM sequential extraction; TRACE-ELEMENTS; SEQUENTIAL EXTRACTION; HEAVY-METALS; SOILS; SEDIMENTS; MOBILITY; ZINC; COAL; VICINITY; PLANTS;

D O I：

10.1016/j.envpol.2016.01.046

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

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.

引用

页码：77 / 89

页数：13

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