Preconcentration of Pb(II), Cr(III), Cu(II), Ni(II) and Cd(II) ions in environmental samples by membrane filtration prior to their flame atomic absorption spectrometric determinations.
A method for separation-preconcentration of Pb(II), Cr(III), Cu(II), Ni(II) and Cd(II) ions by membrane filtration has been described. The method based on the collection of analyte metal ions on a cellulose nitrate membrane filter and determination of analytes by flame atomic absorption spectrometry (FAAS). The method was optimized for several parameters including of pH, matrix effects and sample volume. The recoveries of analytes were generally in the range of 93-100%. The detection limits by 3 sigma for analyte ions were 0.02microgL(-1) for Pb(II), 0.3microgL(-1) for Cr(III), 3.1microgL(-1) for Cu(II), 7.8microgL(-1) for Ni(II) and 0.9microgL(-1) for Cd(II). The proposed method was applied to the determination of lead, chromium, copper, nickel and cadmium in tap waters and RM 8704 Buffalo River Sediment standard reference material with satisfactory results. The relative standard deviations of the determinations were below 10%.
Divrikli
Umit
U
Pamukkale University, Faculty of Arts and Science, Department of Chemistry, 20020 Denizli, Turkey. udivrikli@pamukkale.edu.tr
Kartal
Aslihan Arslan
AA
Soylak
Mustafa
M
Elci
Latif
L
D002104:Cadmium / Q000032:analysis; D002623:Chemistry Techniques, Analytical; D002857:Chromium / Q000032:analysis; D003300:Copper / Q000032:analysis; D005374:Filtration / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D009532:Nickel / Q000032:analysis; D013054:Spectrophotometry, Atomic
D019216:Metals, Heavy; D002104:Cadmium; D002857:Chromium; D007854:Lead; D003300:Copper; D009532:Nickel