Towards quantitative laser-induced breakdown spectroscopy analysis of soil samples

被引：114

作者：

Bousquet, B. ^{[1
]}

Sirven, J. -B. ^{[1
]}

Canioni, L. ^{[1
]}

机构：

[1] Univ Bordeaux 1, Ctr Phys Mol Opt & Hertzienne, F-33405 Talence, France

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2007年 / 62卷 / 12期

关键词：

LIBS; analysis; sorting; classification; Principal Component Analysis; matrix effects; sampling;

D O I：

10.1016/j.sab.2007.10.018

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A quantitative analysis of chromium in soil samples is presented. Different emission lines related to chromium are studied in order to select the best one for quantitative features. Important matrix effects are demonstrated from one soil to the other, preventing any prediction of concentration in different soils on the basis of a univariate calibration curve. Finally.. a classification of the LIBS data based on a series of Principal Component Analyses (PCA) is applied to a reduced dataset of selected spectral lines related to the major chemical elements in the soils. LIBS data of heterogeneous soils appear to be widely dispersed, which leads to a reconsideration of the sampling step in the analysis process. (c) 2007 Published by Elsevier B.V.

引用

页码：1582 / 1589

页数：8

共 22 条

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