| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1241350 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2007 | 8 Pages |
Abstract
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.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
B. Bousquet, J.-B. Sirven, L. Canioni,