The distribution of metals in slags and soils at historical smelting sites: A mass transport approach

被引:0
作者
Maskall, JE [1 ]
Gee, C [1 ]
Ramsey, MH [1 ]
Thornton, I [1 ]
机构
[1] Univ Sunderland, Sch Environm, Sunderland SR2 7EE, Durham, England
来源
GEOENVIRONMENTAL ENGINEERING: CONTAMINATED GROUND: FATE OF POLLUTANTS AND REMEDIATION | 1998年
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中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The concentrations and mass distributions of lead and zinc are investigated in soil-rock core profiles from three historically contaminated lead smelting sites. The results are related to degree of slag contamination, the soil profiles and the mass transport of metals. Substantial amounts of lead are retained within the matrix of slag fragments and represent between 21% and 61% of the total lead present in the contaminated profiles. Metal concentrations in soils are related to either the metal concentrations in slags or to the mass of slag present or to both depending on the degree of slag loading in the profile. The amounts of lead that have migrated from soils and been retained by underlying clay layers are relatively small and range between 0.7% and 1.5% of the total lead present in the profile. At a Roman site, the total nux of lead which has migrated from the contaminated soil and been retained by the underlying clay and limestone was estimated to be 0.182 g m(-2) a(-1) over 1800 years.
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页码:111 / 116
页数:6
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