Solid-phase spectrophotometric iodometric determination of nitrite and selenium(IV) using a polymethacrylate matrix
- 作者: Gavrilenko N.1, Saranchina N.2, Fedan D.2, Gavrilenko M.1
-
隶属关系:
- Tomsk Polytechnic University
- Faculty of Chemistry
- 期: 卷 72, 编号 5 (2017)
- 页面: 546-550
- 栏目: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/182448
- DOI: https://doi.org/10.1134/S1061934817030054
- ID: 182448
如何引用文章
详细
Procedures for the iodometric solid-phase spectrophotometric determination of nitrite and selenium( IV) using a polymethacrylate matrix are proposed. The procedures are based on the reaction of nitrite and selenium(IV) with iodine in an acidic medium with the release of free iodine in amounts equivalent to those of the substances to be determined, extraction of the iodine formed with a polymethacrylate matrix, and measurement of absorbance of the matrix at 370 nm. The developed procedures ensure the determination of 0.01–0.12 mg/L of nitrite and 0.05–0.40 mg/L of selenium(IV) with limits of detection of 0.005 and 0.03 mg/L, respectively. It was shown that the proposed procedures can be applied to the determination of selenium(IV) in mineral water and nitrites in vegetables and soil.
作者简介
N. Gavrilenko
Tomsk Polytechnic University
编辑信件的主要联系方式.
Email: gavrilenko@mail.tsu.ru
俄罗斯联邦, Tomsk, 634050
N. Saranchina
Faculty of Chemistry
Email: gavrilenko@mail.tsu.ru
俄罗斯联邦, Tomsk, 634050
D. Fedan
Faculty of Chemistry
Email: gavrilenko@mail.tsu.ru
俄罗斯联邦, Tomsk, 634050
M. Gavrilenko
Tomsk Polytechnic University
Email: gavrilenko@mail.tsu.ru
俄罗斯联邦, Tomsk, 634050
![](/img/style/loading.gif)