Ion exchange properties of monolithic and particle type iminodiacetic acid modified silicaстатья
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Дата последнего поиска статьи во внешних источниках: 11 апреля 2017 г.
Авторы:
Sugrue E. ,
Nesterenko P. ,
Paull B.
Журнал:
Journal of Separation Science
Том:
27
Номер:
10-11
Год издания:
2004
Издательство:
John Wiley & Sons Ltd.
Местоположение издательства:
United Kingdom
Первая страница:
921
Последняя страница:
930
DOI:
10.1002/jssc.200401794
Аннотация:
A 10 cm silica monolith has been modified with iminodiacetic acid (IDA) groups and characterised for its selectivity toward alkali, alkaline earth, and selected transition metal cations. Physical characterisation of the modified monolith found non-homogeneous modification along the length of the monolith, although sufficient capacity was achieved to facilitate significant retention of alkaline earth and transition/heavy metal ions over a range of eluent pH and ionic strength conditions. For alkaline earth and transition/heavy metal ions, selectivity of the 10 cm IDA monolith closely matched that seen with a 25 cm IDA modified silica gel particle packed column, although the separation of alkali metal ions was noticeably poorer on the monolithic column. Peak efficiencies for most metal ions were of a similar order for both column types, except for Zn(II), which showed significant peak broadening on the IDA monolithic column. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Добавил в систему:
Нестеренко Павел Николаевич