Determination of Metal Elements in Wine Using Laser-Induced Breakdown Spectroscopy (LIBS)

Applied Spectroscopy
Jana BockováJin Yu

Abstract

We developed a method for sensitive elemental analysis of wines using laser-induced breakdown spectroscopy (LIBS). In order to overcome the inefficiency of direct ablation of bulk wine (an organic liquid), a thin layer of wine residue was prepared on a metallic target according to an appropriated heating procedure applied to an amount of liquid wine dropped on the target surface. The obtained ensemble was thus ablated. Such a sample preparation procedure used a very small volume of 2 mL of wine and took only 30 min without reagent or solvent. The results show the detection of tens of metal and non-metal elements including majors (Na, Mg, K, Ca), minors, and traces (Li, B, Si, P, Ti, Mn, Fe, Cu, Zn, Rb, Sr, Ba, and Pb) in wines purchased from local supermarkets and from different production places in France. Commercially available wines were then spiked with certified standard solutions of Ti and Fe. Three series of laboratory reference samples were thus prepared using three different wines (a red wine and a white wine from a same production region and a red wine from another production region) with concentrations of Ti and Fe in the range of 1-40 mg/L. Calibration graphs established with the spiked samples allowed extracting th...Continue Reading

References

Dec 29, 2004·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·R LaraL D Martinez
Jul 6, 2014·Food Chemistry·P P CoetzeeF Vanhaecke

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Citations

May 30, 2019·Physical Chemistry Chemical Physics : PCCP·Michal BodíkPeter Šiffalovič
Dec 12, 2020·Food Chemistry·Antonio Calvo-LópezJulián Alonso-Chamarro
Mar 16, 2021·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Xue BaiShufang Liu
Jul 10, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Anna KalosiPeter Siffalovic

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