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首页> 外文期刊>International Journal of Soil, Sediment and Water >Lead in Soil - An Examination of Paired XRF Analysis Performed in the Field and Laboratory ICP-AES Results
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Lead in Soil - An Examination of Paired XRF Analysis Performed in the Field and Laboratory ICP-AES Results

机译：土壤中的铅-在田间进行的XRF配对分析以及实验室ICP-AES结果的检验

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摘要

A major aspect of lead hazard control is the evaluation of soil lead hazards around housing with lead-based paint applied to specific exterior surfaces. The use of field-portable X-ray fluorescence (FPXRF) to do detailed surveying, with limited laboratory confirmation, can provide lead measurements in soil (especially for planning and monitoring abatement activities) in a more timely manner than laboratory analysis. To date, one obstacle to the acceptance of FPXRF as an approved method of measuring lead in soil has been a lack of correspondence between field and laboratory results. In order to minimize the differences between field and laboratory results, a new protocol has been developed for field drying and sieving of collected samples for field measurement by FPXRF. To evaluate this new protocol, composite samples were collected in the field following both HUD Guidelines and American Society for Testing and Materials (ASTM) protocols, measured after drying and sieving by FPXRF, and returned to the laboratory for confirmatory inductively coupled plasma atomic emission spectroscopy (ICP-AES) analysis. Evaluation of study data from several diverse sites revealed no statistical difference between paired FPXRF and ICP-AES measurements when samples were dried and sieved to less than 250 μm particle size.
机译：铅危害控制的一个主要方面是对房屋周围土壤铅的危害进行评估，并在特定的外部表面上使用基于铅的涂料。与实验室分析相比，使用现场便携式X射线荧光（FPXRF）进行详细的勘测（在实验室确认有限的情况下）可以更及时地提供土壤中的铅测量（尤其是用于计划和监测减排活动）。迄今为止，阻碍FPXRF作为土壤中铅含量的认可方法的一个障碍是田间试验结果与实验室结果之间缺乏对应性。为了最小化田间和实验室结果之间的差异，已经开发了一种新的方案，用于田间干燥和筛分收集的样品，以便通过FPXRF进行田间测量。为了评估该新方案，按照HUD指南和美国材料与试验学会（ASTM）方案在现场收集了复合样品，干燥并通过FPXRF筛分后进行了测量，然后返回实验室进行确认性电感耦合等离子体原子发射光谱法的验证。 （ICP-AES）分析。对来自多个不同站点的研究数据进行的评估表明，将样品干燥并筛分到小于250μm的粒径时，成对的FPXRF和ICP-AES测量值之间没有统计学差异。

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