| Autor: |
Limbeck, Andreas, Rudolph, Elisabeth, Hann, Stephan, Koellensperger, Gunda, Stingeder, Gerhard, Rendl, Josef |
| Zdroj: |
JAAS (Journal of Analytical Atomic Spectrometry); 2004, Vol. 19 Issue: 11 p1474-1478, 5p |
| Abstrakt: |
A method for on-line pre-concentration of platinum with subsequent determination by electro-thermal atomic absorption spectrometry ETAAS has been developed. After a preliminary treatment of the sample solution with tinii-chloride the formed anionic Pt–Sn complexes were on-line adsorbed on a C18 micro column which has been reversibly loaded with the chelating agent N,N-diethyl-N′-benzoylthiourea. The formed platinum complex was eluted with ethanol and directly introduced into the graphite furnace. Using a sample volume of 1.57 mL the limit of detection was calculated to be 0.1 μg L−1. The reproducibility of the method given as the relative standard deviation was 5.5 at a concentration level of 0.5 μg L−1Pt n 10. The accuracy of the developed method has been demonstrated by the analysis of the certified reference material BCR-723 road dust. The new method has been applied to the analysis of platinum in aerosol samples collected in a highway-tunnel in Vienna, Austria. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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