MICROMINERALOGY OF MINE WASTES IN RELATION TO LEAD BIOAVAILABILITY, BUTTE, MONTANA
MICROMINERALOGY OF MINE WASTES IN RELATION TO LEAD BIOAVAILABILITY, BUTTE, MONTANA
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DOI：
10.1021/es00044a018
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发表时间：
1993-07-01
影响因子：
11.4
通讯作者：
NICHOLSON, A
中科院分区：
文献类型：
--
作者：
DAVIS, A;DREXLER, JW;NICHOLSON, A
对土壤和废石矿物学的电子探针分析有助于解释生活在蒙大拿州巴特的幼儿中观察到的低血铅水平。硫化物/硫酸盐组合主要由方铅矿，角闪石，铅黄钾铁矾，而氧化物/磷酸盐组合主要是锰铅氧化物，磷酸铅固溶体系列，和铅的氧化物。模拟共生序列开始使用方铅矿和氧化铅表明，这两个主相天气不太可溶的角闪石和磷氯铅矿端成员，分别。如果这些土壤被摄入，铅的溶解度将受到限制的蚀变和封装的铅载矿物，这限制了可用的铅载表面积。这一前提是支持的巴特银弓环境健康铅研究的结果，这表明，没有统计关系之间存在血铅水平和存在的个别铅轴承阶段。
Electron microprobe analysis of soil and waste rock mineralogy helps explain the low blood Pb levels observed in young children living in Butte, MT. The sulfide/sulfate assemblage consists primarily of galena, anglesite, and lead jarosite, while the oxide/phosphate assemblage was principally manganese lead oxide, lead phosphate solid-solution series, and lead oxide. Modeled paragenetic sequences initiated using galena and lead oxide demonstrated that both primary phases weather to less soluble anglesite and pyromorphite end members, respectively. If these soils were ingested, Pb solubility would be constrained by alteration and encapsulation of the Pb-bearing minerals, which limits the available Pb-bearing surface area. This premise is supported by the results of the Butte-Silver Bow environmental health Pb study, which indicate that no statistical relation exists between blood-Pb levels and the presence of individual Pb-bearing phases.