Characterization of jewellery products by laser-induced breakdown spectroscopy

Autor:	M. D. Luque de Castro, Juan Manuel Fernández-Romero, L. E. García-Ayuso, J. Amador-Hernández
Rok vydání:	2002
Předmět:	Optical fiber business.industry Chemistry Detector Analytical chemistry Laser Biochemistry Analytical Chemistry law.invention Characterization (materials science) law Calibration Environmental Chemistry Optoelectronics Laser-induced breakdown spectroscopy business Spectroscopy Spectrograph
Zdroj:	Analytica Chimica Acta. 457:247-256
ISSN:	0003-2670
DOI:	10.1016/s0003-2670(02)00054-5
Popis:	The suitability of laser-induced breakdown spectroscopy (LIBS) for the characterization of jewellery products is demonstrated by the development of a method based on the use of an Nd-YAG laser (operating at 532 nm) which induces ablation of the material and the production of a plasma whose emission reaches 1/8 m spectrograph (connected to a coupled charge detector (CCD)) through an optic fiber. The treatment of the instrumental signal provides enough analytical information, both for identifying and quantifying the major metals present in this type of material. The method proposed has been developed both by multivariate optimization and calibration procedures with application of the appropriate quality criteria. The chemometric analysis of the data and the use of PLS regression for calibration guarantee the ruggedness of the proposed method. The study of the emission spectra allows characterization of the most common noble metals (gold and silver) as well as other metals present in jewellery pieces.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6036d476f31a3364e80325471ea657e5 https://doi.org/10.1016/s0003-2670(02)00054-5 Zobrazit plný text záznamu Full Text from ScienceDirect