title: Solid phase extraction of gold(III) on Amberlite XAD-2000 prior to its flame atomic absorption spectrometric determination.
abstract: A solid phase extraction method for the determination of gold(III) at trace levels by flame atomic absorption spectrometer (FAAS) was developed. The method was based on retention of gold as chloro complexes through the Amberlite XAD-2000. The effect of some analytical parameters including hydrochloric acid concentration, sample volume, sample and eluent flow rates, eluent volume, eluent concentration and interfering ions on the recovery of gold(III) was investigated. The retention of gold(III) from 1.5 mol l(-1) HCl solution and the recovery of gold with 0.07 mol l(-1) NH3 solution were quantitative (>or=95%). The relative standard deviation (RSD) was calculated as 3.2% (n = 10). The detection limit for gold was 2 microg l(-1). The accuracy was checked with the determination of gold spiked an artificial seawater and a pure copper samples.
authors.affiliation: Chemistry Department, Faculty of Arts and Sciences, Pamukkale University, 20020 Denizli, Turkey. elci@pamukkale.edu.tr
authors.forename: Latif
authors.initials: L
authors.lastname: Elci
authors.forename: Derya
authors.initials: D
authors.lastname: Sahan
authors.forename: Aydan
authors.initials: A
authors.lastname: Basaran
authors.forename: Mustafa
authors.initials: M
authors.lastname: Soylak
mesh_terms: D000327:Adsorption; D003247:Conservation of Natural Resources; D006046:Gold / Q000302:isolation & purification*; D012117:Resins, Synthetic; D052616:Solid Phase Extraction; D012996:Solutions; D013054:Spectrophotometry, Atomic; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D012117:Resins, Synthetic; D012996:Solutions; D014874:Water Pollutants, Chemical; D006046:Gold; C046797:amberlite