title: [Measurement and analysis of lead in soil using X-ray fluorescence spectroscopy].
abstract: The present paper analyzed the characteristics of X-ray fluorescence spectroscopy (XRF) of metal element lead in soil using the NITON XLt793 portable X-ray fluorescence spectra of heavy metal analyzer under laboratory conditions. The characteristic spectral lines of L(alpha) (energy: 10. 55 keV) and L(beta) (energy: 12. 61 keV) with different matrix elements were selected respectively for lead in the experiment. By measuring the intensities of the characteristic spectral line with different Pb concentration, the results demonstrate that the relation between concentration [mass fraction 10 x 10(-6) - 1 800 x 10(-6)] of Pb element and the intensity of the characteristic spectrum is well linear. The calibration curve of Pb was plotted based on the different concentration measurement results, and the limit of detection of 7.89 x 10(-6) was obtained for Pb in soil.
authors.affiliation: Key Laboratory of Environment Optics and Technology, Chinese Academy of Sciences, Hefei 230031, China. rzhang@aiofm.ac.cn
authors.forename: Rong
authors.initials: R
authors.lastname: Zhang
authors.forename: Yu-Jun
authors.initials: YJ
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Dong
authors.initials: D
authors.lastname: Chen
authors.forename: Xiao-Ya
authors.initials: XY
authors.lastname: Yu
authors.forename: Yan-Wei
authors.initials: YW
authors.lastname: Gao