Speciation of hexavalent chromium in welding fumes interference by air oxidation of chromium.

@article{Zatka1985SpeciationOH,
  title={Speciation of hexavalent chromium in welding fumes interference by air oxidation of chromium.},
  author={V. Zatka},
  journal={American Industrial Hygiene Association journal},
  year={1985},
  volume={46 6},
  pages={
          327-31
        }
}
  • V. Zatka
  • Published 1985
  • Chemistry, Medicine
  • American Industrial Hygiene Association journal
  • The determination of various chromium species in welding fume normally involves digestion in a hot alkaline solution. This work confirms that Cr(III) can be oxidized to Cr(VI) during this digestion. However, only dissolved forms of Cr(III), such as the hydroxochromate(III) ion, [Cr(OH)4], are susceptible to oxidation under these conditions. The air oxidation of Cr(III) can be prevented by hydrolytic destabilization of the hydroxochromate(III) complex by the presence of magnesium hydroxide… CONTINUE READING