When tested individually in a clean system, NO//3** minus and HNO//3 are shown not to be serious inhibitors of AsH//3 and H//2Se evolution. The real inhibitors of AsH//3 and H//2Se evolution (encountered when solid samples are oxidatively dissolved in nitric acid) are shown to be correspondingly reduced nitrogen oxides (NO//2** minus , etc. ) produced in sample digestion. Volatile NO//x interferants can then result upon acidic disproportionation. These volatile NO//x species are found to transport with the AsH//3 and H//2Se analyte. The N//2O//3 species is detected in a cryogenic trap.
|Original language||English (US)|
|Number of pages||7|
|Publication status||Published - Sep 1981|
ASJC Scopus subject areas
- Analytical Chemistry