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Diffuse reflection spectroscopy of indium sorbates with immobilized heterocyclic azo compoundsстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Ershova N.I., Ivanov V.M.
- Журнал: Analytica Chimica Acta
- Том: 364
- Номер: 1-3
- Год издания: 1998
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 235
- Последняя страница: 241
- DOI: 10.1016/S0003-2670(98)00180-9
- Аннотация: Diffuse reflection has been used for the direct determination of indium after preconcentration on a solid support. The best conditions were found for sorption of indium complexes with 1 -(2-pyridplazo)-2-naphthol (PAN), 4-(2-pyridylazo)resorcinol (PAR) and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) Immobilized on a silica gel Silochrom S-120. Optical characteristics of the complexes in solutions and on sorbent are practically the same for the variations of the Gurevich-Kubelka-Munk function, color lightness and chromaticity coordinates. The linear solutions of variations of these quantities with the indium contents were determined. It was demonstrated that 4 mu g indium could be concentrated on 0.3 g modified silica gel with immobilized 5-Br-PADAP from a sample volume of 200 ml with an enrichment factor exceeding 600. (C) 1998 Elsevier Science B.V.
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