Application of Energy-Dispersive X-Ray Fluorescence Spectrometry to the Determination of As, Zn, Pb and Cr in Soil

文献类型： 外文期刊

第一作者： Wang Shi-fang

作者： Wang Shi-fang;Luo Na;Han Ping

作者机构：

关键词： X-ray fluorescence spectrometry; Soil heavy metals; Two-dimensional correlation spectroscopy; Partial least squares regression

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2018 年 38 卷 5 期

页码：

收录情况： SCI

摘要： Total concentrations of As, Zn, Pb and Cr were determined in soil samples by using X-ray fluorescence spectrometry. The instrument applicability was good by analyzing the detection limit and accuracy of the instrument. Then, the energy rangesand variable numbers of heavy metal elements were obtained by using two-dimensional correlation spectroscopy. The variable numbersof Pb (10.380 similar to 10.740 and 12.435 similar to 12.900 keV), As (10.380 similar to 10.740 and 11.610 similar to 11.880 keV), Cr (5.310 similar to 5.520 and 5.805 similar to 6.015 keV) and Zn (8.520 similar to 8.805 and 9.555 similar to 9.630 keV) were 57, 44, 30 and 26, respectively. Finally, X-ray fluorescence spectrometry analysis models for heavy metal elements were established based on selected energy ranges by using partial least-squares regression. The results showed that the model performance was best for As, followed by Pb, Zn and Cr, and R-p, were higher than 0.92. The study indicated that the prediction performance of model is improved using optimal energy ranges and the PXRF analyzer is suitable for in-situ monitoring of heavy metals in soil.

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