title: Speciation of inorganic platinum-chloride complexes in spiked environmental samples by SPE and ICP-AES.
abstract: A method for the separation of tetrachloroplatinate PtCl(4)(2-), and hexachloroplatinate PtCl(6)(2-), by solid-phase extraction, using a Dowex 1x10 anion exchange resin is proposed. The sequential elution and separation of PtCl(4)(2-), and PtCl(6)(2-) is achieved using selective complexing agents. The eluates, containing Pt(II) and Pt(IV) were analyzed by inductively coupled plasma-atomic emission spectroscopy (ICP-AES). Recoveries of 102% for PtCl(4)(2-) and 94% for PtCl(6)(2-) and detection limit of 15 ng g(-1) were achieved. Using this method determination of Pt(II) and Pt(IV) in soil samples, spiked with different platinum species was performed. The comparison with GFAAS determination showed a very good agreement.
authors.affiliation: Faculty of Chemistry, University of Sofia, 1 J. Bouchier Boulevard, 1164 Sofia, Bulgaria. valentina_ljubomirova@abv.bg
authors.forename: Valentina
authors.initials: V
authors.lastname: Ljubomirova
authors.forename: Rumyana
authors.initials: R
authors.lastname: Djingova
mesh_terms: D002712:Chlorides / Q000032:analysis*; D002945:Cisplatin / Q000031:analogs & derivatives* / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods; D017671:Platinum Compounds / Q000032:analysis*; D015203:Reproducibility of Results; D012987:Soil / Q000032:analysis*; D013054:Spectrophotometry, Atomic / Q000295:instrumentation* / Q000379:methods*
chemical_list: D002712:Chlorides; D017671:Platinum Compounds; D012987:Soil; C036919:tetrachloroplatinate; D002945:Cisplatin; C038762:disodium hexachloroplatinate