Sorption and preconcentration of cadmium, iron and antimony on bentonite modified with trioctylamine
Küçük Resim Yok
Tarih
2005
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Parlar Scientific Publications (P S P)
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Bentonite, loaded with trioctylamine (C24H51N, TOA), was used as pre-concentration sorbent for cadmium, iron and antimony prior to their determination by flame atomic absorption spectrometry (FAAS). The analytes were quantitatively retained on the proposed adsorbent at pH 4, and its adsorptive capacity was determined to be 13.23 mg/g, 3.33 mg/g and 10 mg/g for Cd, Fe and Sb, respectively. The metal ions could then be quantitatively eluted with I M nitric acid, and recoveries were 99.9 +/- 1%, 97.0 +/- 2 % and 92.1 +/- 3 % for Cd, Fe and Sb (95% confidence level). The relative standard deviations varied between 1.0 - 7.1%. Detection limits (3 sigma) were 0.9 mu g L-1 for Cd, 1.2 mu g L-1 for Fe and 1.4 mu g L-1 for Sb. By applying this column procedure, the elements studied can be reliably determined in the presence of Na+, K+ and Mg+. Finally, the method was applied to wastewater analysis.
Açıklama
Anahtar Kelimeler
Trioctylamine (TOA), Modified, Cadmium, Antimony, Iron, Bentonite, Flame Atomic Absorption Spectrometry (FAAS), Aqueous-Solution, Zinc, Adsorption, Removal, Copper
Kaynak
Fresenius Environmental Bulletin
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
14
Sayı
11
