Texas Tech University, Department of Plant and Soil Sciences, Lubbock, TX, USA.
Environ Pollut. 2013 Nov;182:92-100. doi: 10.1016/j.envpol.2013.07.008. Epub 2013 Jul 29.
Zlatna, Romania is the site of longtime mining/smelting operations which have resulted in widespread metal pollution of the entire area. Previous studies have documented the contamination using traditional methods involving soil sample collection, digestion, and quantification via inductively coupled plasma atomic emission spectroscopy or atomic absorption. However, field portable X-ray fluorescence spectroscopy (PXRF) can accurately quantify contamination in-situ, in seconds. A PXRF spectrometer was used to scan 69 soil samples in Zlatna across multiple land use types. Each site was georeferenced with data inputted into a geographic information system for high resolution spatial interpolations. These models were laid over contemporary aerial imagery to evaluate the extent of pollution on an individual elemental basis. Pb, As, Co, Cu, and Cd exceeded governmental action limits in >50% of the sites scanned. The use of georeferenced PXRF data offers a powerful new tool for in-situ assessment of contaminated soils.
罗马尼亚的兹拉特纳是长期采矿/冶炼作业的所在地，这些作业导致整个地区的金属污染广泛存在。先前的研究使用涉及土壤样本采集、消化和电感耦合等离子体原子发射光谱或原子吸收法定量的传统方法记录了污染情况。然而，现场便携式 X 射线荧光光谱（PXRF）可以在几秒钟内准确地原位定量污染。使用 PXRF 光谱仪对 Zlatna 多种土地利用类型的 69 个土壤样本进行了扫描。每个地点都进行了地理参考，并将数据输入地理信息系统，以便进行高分辨率空间插值。这些模型叠加在当代航空图像上，以评估单个元素基础上的污染程度。在扫描的 50%以上的地点，Pb、As、Co、Cu 和 Cd 超过了政府行动限值。地理参考 PXRF 数据的使用为污染土壤的现场评估提供了一个强大的新工具。
