Сибирский федеральный университет

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 surface 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

• Buyko Olga (Siberian Fed Univ, Res Engn Ctr Kristall, Krasnoiarsk, Russia)
• Losev Vladimir N. (Siberian Fed Univ, Res Engn Ctr Kristall, Krasnoiarsk, Russia)
• Shimanskii Alexander F. (Siberian Fed Univ, Res Engn Ctr Kristall, Krasnoiarsk, Russia)

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