title: [Research on the content prediction model for the determination of nickel in soil by portable energy dispersive X-ray fluorescence analyzer].
abstract: The present paper discusses the influence of matrix effect on measurement results when portable energy dispersive X-ray fluorescence analyzer is used for the determination of Ni in soil. Based on the scattered X-ray intensity of WL(alpha) emitted from the X-ray tube on the sample, a correction method was proposed, and it combines with the correction of absorption element, which can effectively overcome the matrix effect. The correlation coefficient of the content prediction model based on this method is 0.999 and the residual standard deviation is 2.541. The average relative error is 3.90 when the content prediction model is used to measure the content of Ni in the national standard soil samples, so the results coincide well with standard values, and the precision is high.
authors.affiliation: College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China. wangguangxi06@cdut.cn
authors.forename: Guang-Xi
authors.initials: GX
authors.lastname: Wang
authors.forename: Dan
authors.initials: D
authors.lastname: Li
authors.forename: Wan-Chang
authors.initials: WC
authors.lastname: Lai
authors.forename: Juan
authors.initials: J
authors.lastname: Zhai
authors.forename: Zhong-Jian
authors.initials: ZJ
authors.lastname: Yang
authors.forename: Xin
authors.initials: X
authors.lastname: Hou
authors.forename: Fa-Ming
authors.initials: FM
authors.lastname: Cao