Application of laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) for the investigation of ancient silver coins
Guillaume Sarah|Bernard Gratuze|Jean-Noël Barrandon
The main characteristic of ancient silver coins lies in the existence surface enrichment that often covers them. non-destructive methods used so far to analyze these precious objects do not take into account this phenomenon, whose importance cannot be estimated without destruction coins. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), as a spot method particularly convenient for analysis solid samples, has been applied first time. This paper presents LA-ICP-MS analytical protocol developed characterize objects, innovation realization concentration depth profiles major elements (Ag and Cu) five minor (Zn, Sn, Au, Pb, Bi). concentrations determined way reflect composition alloy disturbed by phenomena. Minor trace are average single analysis. optimal experimental conditions have defined studying both modern alloys reliability matrix-matched standards reproducibility micro-samplings checked relevance then verified comparison results obtained fast neutron activation
Journal of Analytical Atomic Spectrometry|HAL (Le Centre pour la Communication Scientifique Directe)|HAL (Le Centre pour la Communication Scientifique Directe)|HAL (Le Centre pour la Communication Scientifique Directe)|HAL (Le Centre pour la Communication Scientifique Directe)