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Feasibility of using laser induced breakdown spectroscopy for quantitative measurement of calcium, magnesium, potassium and sodium in meat

Abstract

The aim of this work is to demonstrate the potential of a commercial laser induced breakdown spectroscopy (LIBS) system for quantitative determination of calcium, magnesium, potassium and sodium in bovine and chicken meat. Bovine and chicken meat are important sources of nutrients in human diet, and Brazil is one of the major producers and exporters in the world. Measurements were performed in a commercial LIBS system designed with a Q-switched laser (Nd:YAG, 10 Hz, λ=266 nm) and a 6 channel-CCD spectrometer. Calibration standards were produced from a selected beef and chicken sample either diluted with high-purity cellulose or spiked with increasing amounts of standard solutions of analytes. After acid decomposition, inductively coupled plasma optical emission spectroscopy (ICP OES) was used to obtain the mass fraction of each analyte in calibration standards. The accuracy of the method was checked by analysis of certified reference materials and comparison of LIBS results with ICP OES data. By applying a t-test at 95% confidence level, LIBS results and ICP OES data presented no significant differences. The metrological figures of merit indicate the potential of a commercial LIBS system fits for the intended purposes and can be recommended for analysis of beef and chicken meat aiming the determination of Ca, Mg, K and Na.

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Publication details

The article was received on 25 Apr 2018, accepted on 08 Jun 2018 and first published on 08 Jun 2018


Article type: Paper
DOI: 10.1039/C8JA00115D
Citation: J. Anal. At. Spectrom., 2018, Accepted Manuscript
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    Feasibility of using laser induced breakdown spectroscopy for quantitative measurement of calcium, magnesium, potassium and sodium in meat

    F. De Oliveira Leme, D. M. Silvestre, A. Nascimento and C. S. Nomura, J. Anal. At. Spectrom., 2018, Accepted Manuscript , DOI: 10.1039/C8JA00115D

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