title: Solid-phase extraction of Fe(III), Pb(II) and Cr(III) in environmental samples on amberlite XAD-7 and their determinations by flame atomic absorption spectrometry.
abstract: This paper describes a simple and accurate procedure for preconcentration of trace amounts of Fe(III), Pb(II) and Cr(III) ions. The preconcentration procedure is based on retention of p-xylenol blue chelates on Amberlite XAD-7. The analytes retained were eluted from Amberlite XAD-7 by using 1 mol L(-1) HCl. The influences of the analytical parameters including amounts of reagents, pH and type of eluent were also investigated. The detection limits of Fe, Pb and Cr were found to be 3.07, 18.6 and 3.27 microg L(-1), respectively. The accuracy of the procedure was checked by the analysis of an electrolytic copper wire sample. The relative error was less than 5%. The presented method was applied to the determination of Fe(III), Pb(II) and Cr(III) in water samples from Denizli, Turkey with good results such as recoveries more than 95%, relative standard deviations below 10%.
authors.affiliation: Pamukkale University, Faculty of Arts and Science, Department of Chemistry, Denizli 20020, Turkey. udivrikli@pamukkale.edu.tr
authors.forename: Umit
authors.initials: U
authors.lastname: Divrikli
authors.forename: Abdullah
authors.initials: A
authors.lastname: Akdogan
authors.forename: Mustafa
authors.initials: M
authors.lastname: Soylak
authors.forename: Latif
authors.initials: L
authors.lastname: Elci
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry; D004573:Electrolytes; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D009792:Oceans and Seas; D011137:Polystyrenes / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000379:methods*; D012996:Solutions; D013054:Spectrophotometry, Atomic / Q000379:methods*; D014867:Water / Q000737:chemistry; D014992:Xylenes / Q000737:chemistry
chemical_list: D000180:Acrylic Resins; D004396:Coloring Agents; D004573:Electrolytes; D007477:Ions; D011137:Polystyrenes; D012996:Solutions; D014992:Xylenes; D014867:Water; D002857:Chromium; D007854:Lead; C015661:amberlite XAD 7; C031286:4-xylene; D007501:Iron