Journal
FOOD CHEMISTRY
Volume 273, Issue -, Pages 91-98Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.02.016
Keywords
LIBS; WDXRF; Direct determination; Calibration models; Bivalve mollusks
Funding
- Sao Paulo Research Foundation (FAPESP) [2016/01513-0]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [401074/2014-5, 305637/2015-0]
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This study aims to develop methods for determination of Ca, K, Mg and Na by laser-induced breakdown spectroscopy (LIBS) and Ca, K, Mg, Na, P, S, Fe and Zn by wavelength dispersive X-ray fluorescence (WDXRF) in pressed pellets bivalve mollusks. LIBS and WDXRF calibration models were built with references values determined by inductively coupled plasma optical emission spectrometry (ICP OES) after acid digestion. The calibration models for LIBS and WDXRF were obtained from 28 samples (14 for calibration and 14 for validation). It was possible to implement a validation between LIBS and WDXRF methods for elements Ca, K, Mg and Na. The proposed calibration model obtained using LIBS and WDXRF data presented a good correlation with reference values obtained by ICP OES.
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