Comparative measurements of mineral elements in milk powders with laser-induced breakdown spectroscopy and inductively coupled plasma atomic emission spectroscopy
| Autor: | A. Stankova, Wenqi Lei, H. P. Zeng, J. El Haddad, Vincent Motto-Ros, Qianli Ma, L. J. Zheng, Jin Yu, N. Gilon-Delepine, Xueshi Bai |
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| Přispěvatelé: | Laboratoire de Spectrométrie Ionique et Moléculaire (LASIM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), State Key Lab Precis Spect, East China Normal University [Shangaï] (ECNU), Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), ANALISS - Analyse inorganique, spectroscopie et spéciation (2011-2013), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL) |
| Rok vydání: | 2011 |
| Předmět: |
Milk powder
SAMPLES ALLOYS Analytical chemistry Mass spectrometry 01 natural sciences Biochemistry Analytical Chemistry 010309 optics [CHIM.ANAL]Chemical Sciences/Analytical chemistry 0103 physical sciences TRACE-ELEMENTS Methods Calibration Animals Laser-induced breakdown spectroscopy [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biochemistry [q-bio.BM] SELF-ABSORPTION Spectroscopy Matrix effect Minerals LIBS Laser ablation Chemistry ICP-AES AIR Spectrum Analysis 010401 analytical chemistry Plasma CF-LIBS QUANTITATIVE-ANALYSIS Elements SOILS 0104 chemical sciences Milk SPECTROMETRY Metals Inductively coupled plasma atomic emission spectroscopy Powders Inductively coupled plasma Food Analysis |
| Zdroj: | Analytical and Bioanalytical Chemistry Analytical and Bioanalytical Chemistry, Springer Verlag, 2011, 400 (10), pp.3303-3313. ⟨10.1007/s00216-011-4813-x⟩ |
| ISSN: | 1618-2650 1618-2642 |
| DOI: | 10.1007/s00216-011-4813-x |
| Popis: | International audience; Mineral elements contained in commercially available milk powders, including seven infant formulae and one adult milk, were analyzed with inductively coupled plasma atomic emission spectrometry (ICP-AES) and laser-induced breakdown spectroscopy (LIBS). The purpose of this work was, through a direct comparison of the analytical results, to provide an assessment of the performance of LIBS, and especially of the procedure of calibration-free LIBS (CF-LIBS), to deal with organic compounds such as milk powders. In our experiments, the matrix effect was clearly observed affecting the analytical results each time laser ablation was employed for sampling. Such effect was in addition directly observed by determining the physical parameters of the plasmas induced on the different samples. The CF-LIBS procedure was implemented to deduce the concentrations of Mg and K with Ca as the internal reference element. Quantitative analytical results with CF-LIBS were validated with ICP-AES measurements and nominal concentrations specified for commercial milks. The obtained good results with the CF-LIBS procedure demonstrate its capacity to take into account the difference in physical parameters of the plasma in the calculation of the concentrations of mineral elements, which allows a significant reduction of the matrix effect related to laser ablation. We finally discuss the way to optimize the implementation of the CF-LIBS procedure for the analysis of mineral elements in organic materials |
| Databáze: | OpenAIRE |
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