Application of Zn isotopes in environmental impact assessment of Zn–Pb metallurgical industries: A mini review. (January 2016) - Yin, Nang-Htay
Abstract: Zn and Pb smelters are the major contributors to Zn and Pb emissions among all anthropogenic sources, thus, it is essential to understand Zn isotopic variations within the context of metallurgical industries, as well as its fractionation in different environments impacted by smelting activities. This mini review outlines the current state of knowledge on Zn isotopic fractionation during the high-temperature roasting process in Zn and Pb refineries; δ 66 Zn values variations in air emissions, slags and effluents from the smelters in comparison to the geogenic Zn isotopic signature of ores formation and weathering. In order to assess the environmental impact of these smelters, the available and measured δ 66 Zn values are compiled for smelter impacted natural water bodies (groundwater, stream and river water), sediments (lake and reservoir) and soils (peat bog soil, inland soil). Finally, the discussion is extended to the fractionation induced during numerous physicochemical reactions and transformations, i.e. adsorption, precipitation as well as both inorganic and organic surface complexation. Graphical abstract: Highlights: Zn and Pb smelters are the major contributors to Zn emissions among all anthropogenic sources. Zn isotopic variations in this context has been widely studied over the last 15 years. Zn isotopic fractionation during the high-temperature roasting process and electroplating process is summarize. Subsequent δ 66 Zn values variations in air emissions, slags and effluents from the smelters are compared to the geogenic one. The usefulness of δ 66 Zn values to trace environmental impact of these smelters is discussed.