Laser-Induced Breakdown Spectroscopy for in-situ Qualitative and Quantitative Analysis of Mineral Ores

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU110198" target="_blank" >RIV/00216305:26210/14:PU110198 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S058485471400202X" target="_blank" >http://www.sciencedirect.com/science/article/pii/S058485471400202X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sab.2014.08.027" target="_blank" >10.1016/j.sab.2014.08.027</a>

Result language

angličtina

Original language name

Laser-Induced Breakdown Spectroscopy for in-situ Qualitative and Quantitative Analysis of Mineral Ores

Original language description

In this work, the potential of Laser-Induced Breakdown Spectroscopy (LIBS) for discrimination and analysis of geological materials was examined. The research was focused on classification of mineral ores using their LIBS spectra prior to quantitative determination of copper. Quantitative analysis is not a trivial task in LIBS measurement because intensities of emission lines in laser-induced plasmas (LIP) are strongly affected by the mineral matrix (matrix effect). To circumvent this effect, typically matrix matched standards are used to obtain matrix dependent calibration curves. If the sample set consists of a mixture of different matrices, even in this approach, the corresponding matrix has to be known prior to the downstream data analysis. For this categorization, the multielemental character of LIBS spectra can be of help. In this contribution, a principal component analysis (PCA) was employed on the measured data set to discriminate individual rocks as individual matrices against each other according to their overall elemental composition. 27 igneous rock samples were analyzed in the form of fine dust, classified and subsequently quantitatively analyzed. Two different LIBS setups in two laboratories were used to prove the reproducibility of classification and quantification. A superposition of partial calibration plots constructed from the individual clustered data displayed a large improvement in precision and accuracy compared to the calibration plot constructed from all ore samples. The classification of mineral samples with complex matrices can thus be recommended prior to calibration analysis.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Spectrochimica Acta Part B

ISSN

0584-8547

e-ISSN

—

Volume of the periodical

101

Issue of the periodical within the volume

11

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

155-163

UT code for WoS article

000344440300023

EID of the result in the Scopus database

2-s2.0-84907512772