| Yazarlar (3) |
Prof. Dr. Neslihan ÖZBEK
Kırşehir Ahi Evran Üniversitesi, Türkiye |
Somer Güler
|
|
Zuman Peter
|
| Özet |
| Numerous commonly used analytical methods allow only determination of a total amount of selenium in a given sample. Electroanalytical methods as well as those based on hydride generation or on formation of piazselenol allow only determination of Se(IV). To determine Se(VI) by these procedures, present alone or in mixtures with Se(IV), it is first necessary to convert Se(VI) to Se(IV). Such conversion is effective in the presence of excess of halides in acidic media or by photoreduction. In the often used conversion of Se(VI) in the presence of chlorides or less frequently of that of bromides, it has been assumed that the halide ion acts as a reducing agent. Kinetic studies of conversion of Se(VI) in acidic solutions containing an excess of bromide ions indicated that the rate determining first step of the reaction with Se(VI) is a nucleophilic substitution of the OH2+ group in the protonated form of H2SeO4 by bromide ions … |
| Anahtar Kelimeler |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale |
| Dergi Adı | Talanta |
| Dergi ISSN | 0039-9140 Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Makale Dili | İngilizce |
| Basım Tarihi | 03-2006 |
| Cilt No | 69 |
| Sayı | 1 |
| Sayfalar | 25 / 31 |
| Doi Numarası | 10.1016/j.talanta.2005.06.073 |
| Makale Linki | http://linkinghub.elsevier.com/retrieve/pii/S0039914005005801 |
| Atıf Sayıları | |
| Google Scholar | 3 |
