Publication at Faculty of Science, Central Library of Charles University |
2022
Abstract
The volatile product of photochemical vapor generation of tungsten has been identified by GC-MS for the first time. A 19 W thin-film flowthrough UV photoreactor was employed and the volatile species of tungsten was generated from a formic acid based medium in the presence of cadmium ions as a sensitizer.
The gas phase containing argon as a carrier gas was sampled by a syringe from a gas-liquid separator and examined by GC-MS. Tungsten hexacarbonyl was clearly identified in the gas phase while attempts to identify products of photochemical vapor generation of other elements (namely Ru and Re) were unsuccessful probably due to their low stability.