[Simultaneous determination of trace platinum, palladium and rhodium in environmental dust samples by ICP-MS after open-digestion].
A sensitive method for simultaneous determination of Pt, Pd and Rh in dust samples by ICP-MS after open-digestion was developed. The digestion method for the samples and conditions for measurement for ICP-MS were studied in detail. Aquaregia was proved to be a better solvent for the digestion of dust samples. Under the optimum conditions, the limits of detection of Pt, Pd and Rh were 0.48, 4.22 and 0.42 ng x g(-1), respectively. The proposed method was applied to the real sample analysis, and good recoveries were obtained. The recoveries of Pt, Pd and Rh were found to be between 87.6%-88%, 85.2%-87.8%, and 93%-95%, respectively.
Shi
Yan-zhi
YZ
Center of Analysis and Testing, Capital Normal University, Beijing, China.
He
Run-juan
RJ
Wang
Juan
J
Zhu
Ruo-hua
RH