Adsorption and on-line preconcentration of Cu(II), Cd(II) and Pb(II) ions from aqueous solution using procion red MX-3B immobilized poly(EGDMA-HEMA) microbeads
Küçük Resim Yok
Tarih
2008
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Parlar Scientific Publications (P S P)
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The adsorption and preconcentration studies of Cu(II), Pb(II) and Cd(II) were investigated on Procion Red MX-3B attached poly(ethylene glycol dimethacrylate-hydroxyethyl methacrylate) [poly(EGDMA-HEMA)] microbeads. The effects of various experimental parameters were investigated using a batch and column technique. The adsorption data followed Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms, but the Langmuir model is better to represent the adsorption process. Procion Red MX-3B- poly(EGDMA-HEMA) microbeads were used as packing material for the minicolumn in an on-line preconcentration system for Cu(II), Pb(II) and Cd(II) determination. Metal ions were sorbed in the minicolumn, from which it could be eluted directly to the nebulizer-burner system of the flame atomic absorption spectrometer (FAAS). Elution of all metal ions from minicolumn can be made with 0.2 mol L-1 HNO3. For a preconcentration time of 2 min, the preconcentration factors were 51, 55 and 48, and the detection limits 1.25, 0.5 and 10 mu g L-1, for Cu(II), Cd(II) and Pb(II), respectively. When using 10 min preconcentration time for Pb(II), the preconcentration factor and detection limit were found to be 273 and 1.1 mu g L-1, respectively. The influence of diverse ions on the microbeads performance was also investioated. The accuracy of the method was tested by analyzing certified reference water (SPS-SW2- Surface Water and LGC 6010 - Hard Drinking Water) and spiked tap water samples. These results proved that the procedure can be applied satisfactorily for lead, copper and cadmium determination in water samples.
Açıklama
Anahtar Kelimeler
on-line preconcentration, Cu(II), Pb(II), Cd(II), poly(EGDMA-HEMA), FAAS
Kaynak
Fresenius Environmental Bulletin
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
17
Sayı
4
