Тип публикации: статья из журнала
Год издания: 2015
Идентификатор DOI: 10.1016/j.microc.2015.05.022
Ключевые слова: Sorption, Silica, Arsenazo I, Polyhexamethylene guanidine, Preconcentration of metals, River water
Аннотация: Silica based sorbent sequentially modified with polyhexamethylene guanidine and 2-(1,8-dihydroxy-3,6-disulfo-2-naphthylazo)benzenearsonic add (Arsenazo I) was developed and studied in the present work. Conditions for immobilizing Arsenazo I on the aminated silica surface were studied: optimal equilibration time was 10 min, and a maximum reagent extraction was achieved between pHs 4 and 7. The stability of the sorbent in highly saline and weakly acidic solutions was examined: it was found that the reagent had not been desorbed from the surface by treatment with dilute solutions of HNO3 and NaCl solutions up to a concentration of 10 g/L. Maximum recovery of Al(III), Ca(II), Cd(II), Co(II), Cu(II), Fe(II), Fe(III), Mg(II), Ni(II), Pb(II), and St(II) was observed in the pH range of 5-7. Metals were desorbed from the surface with 1 M HNO3. Sorptioninductively coupled plasma optical emission method for the determination of metal ions had been developed, including group sorption preconcentration of metal ions from aqueous solutions at pH 7 in the hydrocarbonate buffer medium, their desorption with 1 M HNO3, and inductively coupled plasma optical emission determination. The proposed method was used to determine metal concentration in river waters of Krasnoyarsk Krai. (C) 2015 Elsevier B.V. All rights reserved.
Издание
Журнал: MICROCHEMICAL JOURNAL
Выпуск журнала: Vol. 123
Номера страниц: 84-89
ISSN журнала: 0026265X
Место издания: AMSTERDAM
Издатель: ELSEVIER SCIENCE BV
Персоны
- Losev Vladimir N. (Siberian Fed Univ, Res & Engn Ctr Kristall, Krasnoyarsk 660041, RussiaTaras Shevchenko Kyiv Natl Univ, Dept Chem, UA-01033 Kiev, Ukraine)
- Buyko Olga V.
- Trofimchuk Anatoly K.
- Zuy Oleg N.
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