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Solid phase extractive preconcentration of trace metals usingp tert butylcalix 4 arene 1 2 crown 4 anchored chloromethylated polymeric resin beads     
Yazarlar
Serap Seyhan Bozkurt
Dokuz Eylül Üniversitesi, Türkiye
Mehmet Çolak
Dicle Üniversitesi, Türkiye
Melek Merdivan
Dokuz Eylül Üniversitesi, Türkiye
Prof. Dr. Nadir DEMİREL Prof. Dr. Nadir DEMİREL
Dicle Üniversitesi, Türkiye
Özet
5,11,17,23-Tetrakis(1,1-dimethylethyl)-25,26-dihydroxy-27,28-crown-4-calix[4]arene in the cone conformation was synthesized. This p-tert-butylcalix[4]arene-1,2-crown-4 compound was then anchored with Merrifield chloromethylated resin beads. The modified polymeric resin was characterized by 1H NMR, FT-IR and elemental analysis and used successfully for the separation and preconcentration of Cu(II), Cd(II), Co(II), Ni(II) and Zn(II) prior to their determination by FAAS. Effective extraction conditions were optimized in both batch and column methods. The resin exhibits good separating ability with maximum between pH 6.0-7.0 for Cu(II), pH 6.0 for Cd(II), pH 5.0 for Co(II), pH 4.0-4.5 for Ni(II), and pH 4.5 for Zn(II). The elution studies were carried out with 0.5 mol L-1 HCl for Cu(II), Co(II) and Co(II), 1.0 mol L-1 HCl for Cd(II) and Zn(II). The sorption capacity, preconcentration factor and distribution coefficient of each metal ion were determined. The detection limits were 1.10, 1.25, 1.83, 1.68 and 2.01 μg L-1 for Cu(II), Cd(II), Co(II), Ni(II) and Zn(II). The influence of several ions on the resin performance was also investigated. The validity of the proposed method was checked for these metal ions in NIST standard reference material 2709 (San Joaquin Soil) and 2711 (Montana Soil). © 2006 Elsevier B.V. All rights reserved.
Anahtar Kelimeler
Calix[4]arene | Calix[4]crowns | Merrifield resin | Preconcentration | Transition metals
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Analitica Chimica Acta
Dergi ISSN 0003-2670
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 01-2007
Cilt No 584
Sayı 584
Sayfalar 462 / 468
Doi Numarası 10.1016/j.aca.2006.11.068