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首页> 外文学位 >Changes in the lead concentration in air and soil during house deconstruction and demolition: Case study Springwells, Detroit, Michigan.
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Changes in the lead concentration in air and soil during house deconstruction and demolition: Case study Springwells, Detroit, Michigan.

机译：房屋拆迁过程中空气和土壤中铅的浓度变化：案例研究Springwells，密歇根州底特律。

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摘要

Deconstruction or demolition of old houses containing lead-based paint release Pb to the air and soil in the surrounding. A suite of aerosol (large-volume aerosol sampler, PM10) and soil samples were collected before, during and after deconstruction-demolition-clean-up activities in 5 houses from Springwells, Detroit, Michigan and analyzed for Pb along with a suite of other elements (Be, Al, Cr, Mn, Fe, Ni, Cu, Zn, As, Se, Ag, Cd, Sb, Ba, and Tl) using ICP-MS.;The ambient air Pb concentration in all 5 houses was found to exceed U.S Environmental Protection Agency National Ambient Air Quality Standards. Concentrations of arsenic and barium before deconstruction/demolition also often exceeded the ambient air levels reported in other places by U.S EPA. Highest concentrations of Pb in aerosols were found during demolition/clean-up activities. Positive or lack of significant correlation between aerosol mass and Pb concentration provide insight on the possible sources of aerosols and Pb.;Elemental ratio such as Pb/Al yields information on the sources of aerosols. Vertical profiles of Pb in soil cores indicate highest Pb concentration was found subsurface, potentially due to subsurface migration of Pb through the colloidal particles resulting from the re-mineralization of organic matter. The back-fill non-native soil samples always had the lowest Pb concentration and filling the demolished sites with non-native soils have resulted in the burial of native soils with high concentrations of Pb/.
机译：含铅基油漆的旧房屋的拆除或拆除将Pb释放到周围的空气和土壤中。在密歇根州底特律斯普林韦尔市的5栋房屋中，在拆除，拆除和清理活动之前，之中和之后收集了一套气溶胶（大容量气溶胶采样器，PM10）和土壤样品，并分析了Pb以及其他一套样品使用ICP-MS测定元素（Be，Al，Cr，Mn，Fe，Ni，Cu，Zn，As，Se，Ag，Cd，Sb，Ba和Tl）;发现所有5个房屋中的环境空气Pb浓度超过美国环境保护局国家环境空气质量标准。销毁/拆除之前，砷和钡的浓度通常也超过美国EPA在其他地方报告的环境空气水平。在拆除/清理活动中发现气溶胶中铅的最高浓度。气溶胶质量与Pb浓度之间的正相关或无显着相关性提供了对可能的气溶胶和Pb来源的洞察力；元素比（例如Pb / Al）可提供有关气溶胶来源的信息。土壤核心中铅的垂直剖面表明，地下发现了最高的铅浓度，这可能是由于有机物再矿化导致铅通过胶体颗粒在地下的迁移所致。回填非天然土壤样品始终具有最低的Pb浓度，并且在已拆迁的地点填充非天然土壤导致埋葬了高Pb /浓度的天然土壤。

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  • 作者

    Ayodele, Ayowale Emmanuel.;

  • 作者单位

    Wayne State University.;

  • 授予单位 Wayne State University.;
  • 学科 Environmental Geology.;Environmental Sciences.;Environmental Studies.
  • 学位 M.S.
  • 年度 2014
  • 页码 126 p.
  • 总页数 126
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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