Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.17516/1998-2836-0242
Ключевые слова: adsorption-luminescent determination, yttrium(iii), modified silicas, ferron
Аннотация: Silicas, sequentially modified with polyhexamethylene guanidine and 8-hydroxyquinoline-5-sulfonic acid (SiO2-PHMG-oxine) or 7-iodine-8-hydroxyquinoline-5-sulfonic acid (SiO2-PHMG-ferron), have been proposed for the adsorption-luminescent determination of Y(111) in natural waters. Complex compounds of Y(III) are formed on the surfacПоказать полностьюe of adsorbents during adsorption from solutions at pH 6-7, which luminesce in a yellow-green color (lambda(1um) = 485 nm (SiO2-PHMG-oxine) and lambda(1um) = 490 nm (SiO2-PHMG-ferron)). This is the basis for the method of its sorption-luminescent determination. The detection limit of Y(III), calculated according to the 3s criterion, is 1 mu g/L (SiO2-PHMG-oxine) and 2 mu g/L (SiO2-PHMG-ferron), the analytical range is 4-400 mu g/L (SiO2-PHMG-oxine) and 6-500 mu g/L (SiO2-PHMG-ferron). The developed methods were tested in the determination of yttrium in the Yenisei and Kacha rivers of the Krasnoyarsk Krai. Silicas, sequentially modified with polyhexamethylene guanidine and 8-hydroxyquinoline 5-sulfonic acid (SiO2-PHMG oxine) or 7-iodine 8-hydroxyquinoline 5-sulfonic acid (SiO2-PHMG ferron), have been proposed for the adsorption-luminescent determination of Y(III) in natural waters. Complex compounds of Y(III) are formed on the surface of adsorbents during adsorption from solutions at pH 6-7, which luminesce in a yellow-green color (λlum = 485 nm (SiO2-PHMG oxine) and λlum = 490 nm (SiO2-PHMG ferron)). This is the basis for the method of its sorption-luminescent determination. The detection limit of Y(III), calculated according to the 3s criterion, is 1 μg/L (SiO2-PHMG oxine) and 2 μg/L (SiO2-PHMG ferron), the analytical range is 4-400 μg/L (SiO2-PHMG oxine) and 6-500 μg/L (SiO2-PHMG ferron). The developed methods were tested in the determination of yttrium in the Yenisei and Kacha rivers of the Krasnoyarsk Krai. © Siberian Federal University. All rights reserved.
Журнал: JOURNAL OF SIBERIAN FEDERAL UNIVERSITY-CHEMISTRY
Выпуск журнала: Vol. 14, Is. 3
Номера страниц: 337-349
ISSN журнала: 19982836
Место издания: KRASNOYARSK
Издатель: SIBERIAN FEDERAL UNIV