title: Solid-phase extraction of iridium from soil and water samples by using activated carbon cloth prior to its spectrophotometric determination.
abstract: A solid-phase extraction method for separation and preconcentration of Ir(IV) ion by using activated carbon cloth (ACC) has been presented. Ir(IV) as their 1-(2-pyridylazo) 2-naphtol (PAN) chelate was adsorbed on ACC at pH 2.0 and was eluted from ACC with acidic dimethylformamide (DMF). The Ir(IV) concentration was determined at 536 nm as Ir(IV)-PAN complex by using UV-vis spectrophotometer. The analytical parameters including pH, sample and eluent flow rates, amount of PAN, eluent type, concentration, and sample volume were optimized. The effects of foreign ions on the recoveries of iridium were also investigated. The preconcentration factor was calculated as 60. The limit of detection (LOD) and the limit of quantification (LOQ) of the method were found as 0.039 and 0.129 μg L(-1), respectively. The method was applied to soil and water samples for iridium determination.
authors.affiliation: Chemistry Department, Faculty of Science and Arts, Gaziosmanpasa University, 60250, Tokat, Turkey.
authors.forename: Nebiye
authors.initials: N
authors.lastname: Ozkantar
authors.forename: Erkan
authors.initials: E
authors.lastname: Yilmaz
authors.forename: Mustafa
authors.initials: M
authors.lastname: Soylak
authors.forename: Mustafa
authors.initials: M
authors.lastname: Tuzen
mesh_terms: D000327:Adsorption; D002606:Charcoal / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis* / Q000737:chemistry; D007495:Iridium / Q000032:analysis* / Q000737:chemistry; D057230:Limit of Detection; D009284:Naphthols; D012987:Soil / Q000737:chemistry; D052616:Solid Phase Extraction / Q000379:methods; D013053:Spectrophotometry / Q000379:methods; D014867:Water / Q000737:chemistry
chemical_list: D004785:Environmental Pollutants; D009284:Naphthols; D012987:Soil; D014867:Water; D002606:Charcoal; D007495:Iridium; C028405:2-naphthol