A novel approach to the estimation of aqueous solubility of some noble metal vapor species generated by reaction with tetrahydroborate (III)

Download
  1. Get@NRC: A novel approach to the estimation of aqueous solubility of some noble metal vapor species generated by reaction with tetrahydroborate (III) (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1016/j.sab.2004.01.010
AuthorSearch for: ; Search for: ; Search for:
TypeArticle
Journal titleSpectrochimica Acta Part B: Atomic Spectroscopy
ISSN05848547
Volume59
IssueMay 21, 5
Pages667675; # of pages: 9
SubjectSodium tetrahydroborate; Cold vapour mercury; Mercury solubility; Metal solubility; Hydride generation
AbstractThe solubilities of stable, volatile metal species of Pd, Rh, Cd, Au and elemental Hg in an aqueous medium were estimated. Aqueous solutions were used to trap the species generated by reduction of the aquo ion with tetrahydroborate III. By continuously monitoring the headspace above the trap solution using ICP-MS detection, a saturation condition is readily discerned. Quantitation of the soluble fraction rapidly liberated by sparging the aqueous phase also permits its quantitation. The applicability of this approach was experimentally verified using cold vapour mercury generation to yield a solubility of elemental mercury of 40 ng/ml at 21 °C in a tin chloride reductant medium, in good agreement with a literature value of 44 ng/ml (after correction for salting out). The methodology was then applied to estimation of the solubilities of the gaseous species of Rh, Pd, Cd and Au, yielding values of 0.11, 3, >800 and 1.7 ng/l, respectively.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10274169
NRC number660
NPARC number8897333
Export citationExport as RIS
Report a correctionReport a correction
Record identifierd94080d7-04fc-49a8-90f6-d87223a43c68
Record created2009-04-22
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)