Silver as a test element for Zeeman furnace AAS |
| |
| Institution: | 1. Institute of Geochemistry, Mineralogy and Mineral Resources, Faculty of Science, Charles University, Albertov 6, CZ-128 43 Prague 2, Czech Republic;2. Department of Soil Science and Soil Protection, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague 6, Czech Republic;3. Czech Geological Survey, Geologická 6, Prague 152 00 5, Czech Republic;4. University of Zambia, School of Mines, Department of Geology, POB 32 379, Lusaka, Zambia |
| |
| Abstract: | Silver was studied as a candidate element to test the stability of graphite furnace performance. Several problems were found, but when these were controlled the instrumental performance was quite stable and reproducible. When the Ag line at 328.1 nm was used with a matrix containing phosphate and a metal, a small spectral interference was produced when Zeeman background correction was used. The interference appeared to result from Zeeman splitting of PO bands that overlapped the 328.1-nm line from the source. Since phosphate had been recommended as a matrix modifier for Ag, this could be a serious problem. Both Pd and Cu are shown to be preferable to phosphate as a matrix modifier for Ag, especially with Zeeman corrected instruments. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
