Preconcentration of some trace elements on bentonite modified with trioctyl phosphine oxide
Küçük Resim Yok
Tarih
2004
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Parlar Scientific Publications (P S P)
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A new collector, bentonite modified by the addition of trioctyl phosphine oxide, was developed for the separation and preconcentration of chromium, zinc and copper prior to flame atomic absorption spectrometry (FAAS). The above metals are quantitatively retained on a column filled with the proposed adsorbent at pH 6.0 and completely eluted with 1 mol/L of nitric acid. An important advantage of the new collector are low blank values and recoveries were 99.4%, 98.2% and 97.6% for chromium, zinc and copper, respectively, with relative standard deviations of 1.0-5.0%. Detection limits (3sigma) were 1.3 mugL(-1) for Cr, 1.7 mugL(-1) for Zn and 2.1 mugL(-1) for Cu and elements studied can be used reliably determined in the presence of Mg+, K+ and Na+. Finally, the modified method was used for the analysis of the elements in wastewaters.
Açıklama
Anahtar Kelimeler
Modified Bentonite, Trioctyl Phosphine Oxide, Trace Elements, Wastewater, Atomic Absorption Spectrometry, Preconcentration, Absorption Spectrometric Determination, Flow-Injection System, Online Preconcentration, Samples, Coprecipitation, Filtration, Cadmium, Lead
Kaynak
Fresenius Environmental Bulletin
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
13
Sayı
2
