Determination of Ca in breakfast cereals by laser induced breakdown spectroscopy

Abstract

a b s t r a c tA method using Laser Induced Breakdown Spectroscopy (LIBS) for calcium (Ca) determination in breakfast cereals was evaluated. To perform the calibration curve, seven commercial cereals containing Ca in a range of 16.00-3734 mg kg À1 were considered. The Ca amounts provided by the manufacturers were evaluated by using inductively coupled plasma optical emission spectrometry (ICP OES). The precision of the LIBS measurements was of 8% and the accuracy, observed by using a corn bran standard reference material was higher than 99%. The method was successfully applied to predict the Ca concentration in a set of commercial samples dispensing the sample pre-treatment, with the potential to be used in production lines.

Laser Induced-Breakdown Spectroscopy (Libs): Histórico, Fundamentos, Aplicações E Potencialidades

“…209 Diversos trabalhos usaram a LIBS para a avaliação dos aspectos nutricionais, a partir da determinação de macro e microelementos essenciais. 81,132,205,[208][209][210] Nesse sentido, Ferreira et al 211 determinaram Ca em amostras de cereais matinais. Peruchi et al 52 analisaram amostras de farinhas de trigo pastilhadas para a determinação de Ca, Cu, Fe, K, Mg, Mn, P, S e Zn utilizando LIBS e espectrometria de fluorescência de raios X por energia dispersiva.…”

Two-step procedure for trace element analysis in food via calibration-free laser-induced breakdown spectroscopy

“…Laser-induced breakdown spectroscopy (LIBS) stimulated strongly growing interest in the past years due to the capability of performing rapid multielemental analyses without or with minimized sample preparation [4,5]. Thus, the analytical capabilities of LIBS were investigated for various types of food such as wheat [6,7], cereals [8,9], vegetables [10,11], milk powder [12,13], and oil [14]. The presented approaches * Corresponding author: hermann@lp3.univ-mrs.fr that aim to quantify the elemental composition can be divided into three categories: (i) measurements based on calibration with standard samples; (ii) chemometric methods; (iii) calibration-free measurements.…”

Laser induced breakdown spectroscopy for quantification of sodium and potassium in minced beef: a potential technique for detecting beef kidney adulteration

“…LIBS signal intensities are affected by the physical and chemical properties of the sample. 28 Chemical composition, particle size and homogeneity of the sample surface are key factors. These factors control the interaction of the laser with the sample and hence the plasma temperature, which in turn affects the relative intensities of the emission lines due to a change in the amount of ablated material 18,29,30 .…”