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首页> 外文期刊>Environmental Pollution >Sequential extraction combined with isotope analysis as a tool for the investigation of lead mobilisation in soils: Application to organic-rich soils in an upland catchment in Scotland
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Sequential extraction combined with isotope analysis as a tool for the investigation of lead mobilisation in soils: Application to organic-rich soils in an upland catchment in Scotland

机译：顺序萃取结合同位素分析作为研究土壤铅动员的工具：在苏格兰山地流域富含有机物的土壤中的应用

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Sequential extraction (modified BCR procedure) combined with isotope analysis has been investigated as a tool for assessing mobilisation of lead into streams at an upland catchment in NE Scotland. The maximum lead concentrations (up to 110 mg kg(-1) in air-dried soil) occurred not at the surface but at about 10 cm depth. The lowest Pb-206/Pb-207 ratios in any profile occurred, with one exception, at 2.5-5 cm depth. In the one exception. closest to the only road in the area, significantly lower Pb-206/Pb-207 ratios in the surface soil together with much increased chloride concentrations (in comparison to other surface waters) indicated the possible mobilisation of roadside lead and transfer to the stream. The Pb-206/Pb-207 ratios in extractable fractions tended at depth towards the ratio measured in the residual phase but the ratios in the oxidizable fraction increased to a value higher than that of the residual phase. (c) 2005 Elsevier Ltd. All rights reserved.
机译：序贯提取（改良的BCR程序）与同位素分析相结合已被研究为评估东北苏格兰高地流域铅迁移到河流中的动员工具。最大铅浓度（在风干的土壤中高达110 mg kg（-1））不是在表面，而是在大约10 cm的深度。在任何剖面中，最低的Pb-206 / Pb-207比率均发生在2.5-5 cm深度处，唯一的例外。在一个例外。最接近该地区的唯一道路的是，地表土壤中的Pb-206 / Pb-207比率明显较低，并且氯化物浓度大大增加（与其他地表水相比），表明可能动员路边铅并转移到河流中。可萃取馏分中的Pb-206 / Pb-207比率在深度上趋向于残留相中测得的比率，但可氧化馏分中的比率增加到高于残留相的值。 （c）2005 Elsevier Ltd.保留所有权利。

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