Separation and speciation of Cr(III) and Cr(VI) with Saccharomyces cerevisiae immobilized on sepiolite and determination of both species in water by FAAS
Yükleniyor...
Tarih
2000
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A rapid, sensitive and accurate method for the separation, preconcentration and determination of Cr(III) and Cr(VI) in water samples is described. Chromium species can be separated by biosorption on Saccharomyces cerevisiae immobilized on sepiolite and determined by flame atomic absorption spectrometry (FAAS). The optimum conditions for separation and preconcentration (pH, bed height, flow rate and volume of sample solution) were evaluated. Recovery of the chromium was 96.3 +/- 0.2% at 95% confidence level The breakthrough capacity of the adsorbent was found as 228 mu mol g(-1) for Cr(III). The proposed method was applied successfully to the determination of Cr(III) and Cr(VI) in spiked and river water samples. (C) 2000 Elsevier Science B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
separation, speciation, Saccharomyces cerevisiae, immobilization, sepiolite, flame atomic absorption spectrometry
Kaynak
Talanta
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
51
Sayı
5
Künye
closedAccess
