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Type: Artigo de periódico
Title: Platinum-group elements and gold determination NiS fire assay buttons by UV laser ablation ICP-MS
Author: Jorge, APD
Enzweiler, J
Shibuya, EK
Sarkis, JES
Figueiredo, AMG
Abstract: The direct analysis of nickel sulfide fire assay buttons by UV laser ablation ICP-MS was used to determine the platinum-group elements and gold in the following reference materials: UMT-1, WPR-1, WMG-1, GPt-4, GPt-6 and CHR-Bkg. The instrument was calibrated with buttons prepared using quartz doped with the appropriate standard solutions. Analytical precision (RSD) was generally better than 10%, although occasional higher RSDs may infer local heterogeneities within nickel sulfide buttons. Good or excellent agreement was observed between analysed and reference material values except Ph in UMT-1 and WMG-1, which suffered an interference from copper. Detection limits calculated as 10s quantitation limits were Au (1.7 ng g(-1)), Pd (3.3 ng g(-1)), Pt (8.3 ng g(-1)), Os (1.3 ng g(-1)), Ph (1 ng g(-1)), Ru (5 ng g(-1)) and Ir (0.7 ng g(-1)).
Subject: nickel sulfide
fire assay
laser ablation
platinum-group elements
Country: França
Editor: Geostandards
Rights: fechado
Identifier DOI: 10.1111/j.1751-908X.1998.tb00544.x
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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