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ICP-MS Determination of Pt,Pd and Rh in Catalysts for Auto-exhaust-gas Purifier

Li Qiu

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Abstract

Sample of catalysts for auto-exhaust-gas purifier was fused with Na_2O_2,and the melt was dissolved in hot water and acidified with HCl.An aliquot of the sample solution was taken for ICP-MS determination of Pt,Pd and Rh.~(111)Cd and ~(203)Tl were used as internal standards.Values of detection limit(3s)of Pt,Pd and Rh found were 0.048,0.056,0.019μg·g~(-1)respectively.The proposed method was used in the analysis of 5 catalyst samples,the results obtained were in conformity with those obtained by photometry.Values of recovery and RSD's (n=12)found were 100.0%and 1.3%for Pt,100.0%and 1.0%for Pd,99.8%and 1.6%for Rh respectively.

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What this paper is about

Sample of catalysts for auto-exhaust-gas purifier was fused with Na_2O_2,and the melt was dissolved in hot water and acidified with HCl.An aliquot of the sample solution was taken for ICP-MS determination of Pt,Pd and Rh.~(111)Cd and ~(203)Tl were used as internal standards.Values of detection limit(3s)of Pt,Pd and Rh found were 0.048,0.056,0.019μg·g~(-1)respectively.The proposed method was used in the analysis of 5 catalyst samples,the results obtained were in conformity with those obtained by photometry.Values of recovery and RSD's (n=12)found were 100.0%and 1.3%for Pt,100.0%and 1.0%for Pd,99.8%and 1.6%for Rh respectively.

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Available abstract

Sample of catalysts for auto-exhaust-gas purifier was fused with Na_2O_2,and the melt was dissolved in hot water and acidified with HCl.An aliquot of the sample solution was taken for ICP-MS determination of Pt,Pd and Rh.~(111)Cd and ~(203)Tl were used as internal standards.Values of detection limit(3s)of Pt,Pd and Rh found were 0.048,0.056,0.019μg·g~(-1)respectively.The proposed method was used in the analysis of 5 catalyst samples,the results obtained were in conformity with those obtained by photometry.Values of recovery and RSD's (n=12)found were 100.0%and 1.3%for Pt,100.0%and 1.0%for Pd,99.8%and 1.6%for Rh respectively.

Key concepts: Detection limit, Catalysis, Chemistry, Analytical Chemistry (journal), Exhaust gas, Nuclear chemistry, Rhodium, Chromatography

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ICP-MS Determination of Pt,Pd and Rh in Catalysts for Auto-exhaust-gas Purifier — Research Paper | ScholarLens