Reactions of palladium(II) and rhodium(III) with pyridylazo-2-naphthol and dithizone on PANV–KU-2 and PANV–AV-17 fibrous materials
- Авторы: Dedkova V.1, Shvoeva O.1, Simakina Y.1, Grechnikov A.1
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Учреждения:
- Vernadsky Institute of Geochemistry and Analytical Chemistry
- Выпуск: Том 71, № 9 (2016)
- Страницы: 896-900
- Раздел: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/182044
- DOI: https://doi.org/10.1134/S1061934816090070
- ID: 182044
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Аннотация
Reactions of palladium(II) and rhodium(III) with dithizone (DT) on polyacrylonitrile fiber filled with an AV-17 anion exchanger (PANV–AV-17) and 1-(2-pyridylazo)-2-naphthol (PAN) immobilized on polyacrylonitrile fiber filled with a KU-2 cation exchanger (PANV–KU-2–PAN) are studied by diffuse reflection spectroscopy. Conditions of rhodium complexation on PANV–KU-2–PAN (ascorbic acid concentration, pH of solution in adsorption, and the duration of heating samples) and palladium complexation with DT after adsorption from a 0.1 M NaCl solution (pH 2) on PANV–AV-17 in the dynamic mode are found. The limits of detection for rhodium and palladium are 10 and 5 ng/mL, respectively. At 640 nm, the calibration graphs are linear in the ranges of palladium and rhodium concentrations 0.008–0.06 µg/mL and 0.02–0.2 µg/mL, respectively. The mutual influence of rhodium and palladium is studied. It is shown that the determination of palladium with DT on a PANV–AV-17 solid phase is not affected by the presence of a 5-fold amount of rhodium, and rhodium can be determined on PANV–KU-2–PAN at 590 nm in the presence of 2-fold amounts of palladium.
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Об авторах
V. Dedkova
Vernadsky Institute of Geochemistry and Analytical Chemistry
Автор, ответственный за переписку.
Email: DedVa@yandex.ru
Россия, ul. Kosygina 19, Moscow, 119991
O. Shvoeva
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: DedVa@yandex.ru
Россия, ul. Kosygina 19, Moscow, 119991
Ya. Simakina
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: DedVa@yandex.ru
Россия, ul. Kosygina 19, Moscow, 119991
A. Grechnikov
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: DedVa@yandex.ru
Россия, ul. Kosygina 19, Moscow, 119991