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Chelation ion chromatography of alkaline earth and transition metals a using monolithic silica column with bonded N-hydroxyethyliminodiacetic acid functional groupsстатья
Статья опубликована в высокорейтинговом журнале
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: 24 марта 2017 г.
- Авторы: McGillicuddy N., Nesterenko E.P., Nesterenko P.N., Jones P., Paull B.
- Журнал: Journal of Chromatography A
- Том: 1276
- Год издания: 2013
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 102
- Последняя страница: 111
- DOI: 10.1016/j.chroma.2012.12.033
- Аннотация: A commercially available porous silica monolithic column (Onyx Monolithic Si, 100mm×4.6mm I.D.) was ’in-column’ covalently functionalised with 2-hydroxyethyliminodiacetic acid (HEIDA) groups, and applied to the simultaneous and rapid separation of alkaline earth and transition metal ions, using high-performance chelation ion chromatography (HPCIC). With a 0.3mM dipicolinic acid (DPA) containing eluent, the baseline separation of various common transition and heavy metal ions and the four alkaline earth metal ions could be achieved in under 14min with a flow rate of just 0.8mL/min. Detection was achieved using spectrophotometric detection at 540nm after post-column reaction (PCR) with 4-(2-pyridylazo)-resorcinol (PAR). Significant effects from variation of eluent nature, concentration and temperature upon selectivity and retention were demonstrated with the new monolithic silica chelating phase. Under optimised conditions (0.165M LiNO3 eluent, pH 2.5), peak efficiencies of 54,000, 60,000 and 64,000N/m, for Zn2+, Mn2+ and Cd2+, respectively, were recorded, far exceeding that previously reported for IDA based chelation ion exchange columns. © 2013 Elsevier B.V.
- Добавил в систему: Нестеренко Павел Николаевич