Assessment of contribution of metal pollution sources to attic and household dust in Pb-polluted area.
Assessment of contribution of metal pollution sources to attic and household dust in Pb-polluted area.
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铅污染地区金属污染源对阁楼和家庭扬尘的贡献评估
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
M. Gosar
中科院分区：
文献类型：
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作者：
M. Miler;M. Gosar
使用各种分析技术对来自铅污染地区的阁楼和家庭灰尘进行了调查，以进行源解析和含金属相的源贡献评估。从矿物学角度来看，阁楼灰尘由石膏、硬石膏和含金属相组成，而家庭灰尘则由含碳颗粒和少量含金属相组成。阁楼灰尘中硫化物和硫酸盐的硫同位素组成表明，它们是当地硫化矿石过去初级冶炼的结果，而家庭灰尘中的硫化物和硫酸盐则直接来自当地矿山废料。 Pb同位素比值表明，两种粉尘中的含铅相主要来源于当地铅矿石的开采和初级冶炼。根据其成分、形态和矿物学，将单个含金属颗粒分配到过去的铅冶炼、当今的铅回收和过去的采矿/矿山废物机械加工阶段。计算出的含金属相对室内灰尘的来源贡献表明，初级铅冶炼是过去的重要污染源，而迄今为止主动铅回收仅贡献了微不足道的物质量。然而，来自采矿/矿山废物加工的材料是当前重要的活跃污染源。研究表明，同时研究不同室内灰尘类型中含金属相的特征和同位素组成可以作为评估过去和近期空气金属污染源贡献的工具。
Attic and household dusts from Pb-polluted area were investigated using various analytical techniques for source apportionment and assessment of source contribution of metal-bearing phases. Mineralogically, attic dust consists of gypsum, anhydrite, and metal-bearing phases, while household dust comprises C-bearing particles and only minor metal-bearing phases. Sulfur isotope composition of sulfides and sulfates in attic dust shows that they result from past primary smelting of local sulfide ore, while those in household dust originate directly from local mine-waste material. Pb isotope ratios show that Pb-bearing phases in both dust types mostly originate from mining and primary smelting of local Pb-ore. Individual metal-bearing particles were apportioned by their composition, morphology, and mineralogy to phases from past Pb-smelting, present-day Pb-recycling, and past mining/mine-waste mechanical processing. Calculated source contribution of metal-bearing phases to indoor dust showed that primary Pb-smelting was important pollution source in the past, while active Pb-recycling has contributed only negligible amount of material so far. However, material from mining/mine-waste processing is an important currently active pollution source. Study demonstrated that simultaneous investigation of characteristics and isotopic composition of metal-bearing phases in different indoor dust types serves as tool for assessment of source contribution of past and recent airborne metal pollution.
影响因子：
8.9
作者：
Davis, Harley T.;Aelion, C. Marjorie;McDermott, Suzanne;Lawson, Andrew B.
通讯作者：
Lawson, Andrew B.