Distribution and mobility of lead in soils at an outdoor shooting range
Distribution and mobility of lead in soils at an outdoor shooting range
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DOI：
10.1080/15320389709383547
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发表时间：
1997-01-01
期刊：
影响因子：
--
通讯作者：
Sokol, H
中科院分区：
文献类型：
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作者：
Murray, K;Bazzi, A;Sokol, H
采用单次提取元素分析法（AAS和ICP-AES）测定了密歇根州东南部室外靶场土壤表层和次表层中的Pb。显着的铅富集的网站的土壤密切吻合铅蒸气和颗粒物产生的射击壳引物和下跌的铅/锑球与娱乐射击的双向飞碟和陷阱。这些地点的表面浓度比邻近物业的背景浓度高10至100倍。铅在地下土层中的分布与铅在地表的分布相对应，这表明铅是通过包气带向下移动和迁移的。这种动员似乎发生，尽管粘土丰富的性质的土壤，可能是由于金属铅转化成可溶性铅化合物的碳酸盐和硫酸盐。这两种化合物似乎都存在于覆盖在现场发现的许多球粒的地壳材料中。可溶性铅的向下迁移对地下水是一个潜在的威胁，地下水存在于不到1 m的深度。地表水质量的保护也是一个问题，因为在附近一条溪流的河床沉积物中发现了来自射击场的铅颗粒。
The distribution of fetal Pb in surface and subsurface soil horizons at an outdoor shooting range in southeastern Michigan was determined by single extraction elemental analysis (AAS and ICP-AES). Significant Pb enrichment of the site's soils coincides closely with Pb vapor and particulate matter produced from shot shell primers and the downfall of Pb/Sb pellets associated with the recreational shooting of skeet and trap. Surface concentrations in these locations are 10 to 100 times greater than the background concentration found on adjacent properties. The distribution of Pb in the subsurface soil horizons corresponds to the distribution of Pb at the surface, which suggests the Pb is mobilizing and migrating downward through the vadose zone. This mobilization appears to be occurring despite the clay-rich nature of the soils, and may be due to the transformation of metallic Pb into soluble Pb compounds of carbonate and sulfate. Both compounds appear to be present in crust material found coating many of the pellets found at the site. The downward migration of soluble Pb is a potential threat to groundwater that is present af the site at a depth of less than 1 m. The protection of surface water quality is also a concern because Pb pellets from the shooting range have been found in the bed sediments of a nearby stream.