title: Determination of chromium(III) and total chromium in marine waters.
abstract: The development of an analytical technique is described which may be used to determine chromium, chromium(III) and chromium(VI) in estuarine and coastal waters. The method is based on selective micro-solvent extraction with subsequent GFAAS. The technique has been applied in a major North Sea estuary. The results obtained confirm that thermodynamic factors alone cannot be relied upon to describe the form of chromium in estuaries. Kinetic factors appear to have a strong influence over speciation and lead to the persistence of Cr(III) species in environments where Cr(VI) would be expected to be present.
authors.affiliation: WRc, Medmenham, Henley Road, SL7 2HD, Marlow, United Kingdom.
authors.forename: M J
authors.initials: MJ
authors.lastname: Gardner
authors.forename: J E
authors.initials: JE
authors.lastname: Ravenscroft