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Analysis of germanium in rock and sediment by ICP/MS after ammonium bifluoride(NH4HF2) digestion
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2013, v.26 no.6, pp.375-380
https://doi.org/10.5806/AST.2013.26.6.375
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(2013). Analysis of germanium in rock and sediment by ICP/MS after ammonium bifluoride(NH4HF2) digestion. Analytical Science and Technology, 26(6), 375-380, https://doi.org/10.5806/AST.2013.26.6.375
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Abstract
Ammonium biflouride (NH4HF2) digestion was studied for germanium analysis in rock and sediment by inductively coupled plasma mass spectrometry (ICP/MS). QLO-1 and SDO-1 are used for reference materials from USGS. Sediment, basalt and ball clay for GeoPT were chosen as real samples. The loss of germanium in open vessel digestion was well known which can be caused by easy transformation to volatile compounds. But ammonium bifluoride digestion could suppress loss of germanium in open vessel digestion. Germanium recovery was not influenced by hydrogen peroxide with ammonium bifluoride digestion. Furthermore, the new method was simple and rapid in germanium analysis by ICP/MS. MDL(method detection limit) was 0.015 μg/g and germanium recovery was 106~128%.
- keywords
- germanium analysis, ammonium bifluoride, rock and sediment, open vessel digestion, ICP/MS
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