Spectroscopy and Spectral Analysis, Volume. 38, Issue 5, 1648(2018)
Application of Energy-Dispersive X-Ray Fluorescence Spectrometry to the Determination of As, Zn,Pb and Cr in Soil
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 numbersof heavy metal elements were obtained by using two-dimensional correlation spectroscopy. The variable numbersof Pb (10380~10740 and 12435~12900 keV), As (10380~10740 and 11610~11880 keV), Cr (5310~5520 and 5805~6015 keV) and Zn (8520~8805 and 9555~9630 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 Rp were higher than 092. 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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WANG Shi-fang, LUO Na, HAN Ping. Application of Energy-Dispersive X-Ray Fluorescence Spectrometry to the Determination of As, Zn,Pb and Cr in Soil[J]. Spectroscopy and Spectral Analysis, 2018, 38(5): 1648
Received: Jun. 12, 2017
Accepted: --
Published Online: Jun. 1, 2018
The Author Email: Shi-fang WANG (wangshifang1302@126.com)