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Type: Artigo de evento
Title: Naa And Uv Laser Ablation Icp-ms For Platinum Group Elements And Gold Determination In Nis Fire Assay Buttons: A Comparison Between Two Methods
Author: Figueiredo A.M.G.
Enzweiler J.
Sarkis J.E.S.
Jorge A.P.S.
Shibuya E.K.
Abstract: NAA and UV laser ablation ICP-MS were used to determine platinum group elements (PGEs) and gold in the geological reference materials UMT1, WPR-1, WMG-1, GPT-4 and GPt-6, after NiS fire assay. Both methods presented results were good agreement with the recommended values. NAA gave more accurate values for Ir (relative errors between 0 to 9%) and UV-LA-ICP-MS presented better results for Pt (relative errors less than 12%, except for WPR-1). UV- LA-ICP-MS showed better sensitivity than NAA for Pd and Os. On the other hand, NAA showed lower detection limits for Ir and Au. Advantages and disadvantages of each method are discussed.
Rights: fechado
Identifier DOI: 10.1023/A:1006725618998
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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