METHODS AND OBJECTS OF CHEMICAL ANALYSIS
ISSN title: "Metody i obʺekty himičeskogo analiza"
An international journal devoted to all aspects of Analytical chemistry
ISSN 2413-6166 (Online), ISSN 1991-0290 (Print)
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METHODS AND OBJECTS OF CHEMICAL ANALYSIS ISSN title: "Metody i obʺekty himičeskogo analiza" An international journal devoted to all aspects of Analytical chemistry ISSN 2413-6166 (Online), ISSN 1991-0290 (Print) |
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Optimization of the conditions of the spectrophotometric detection of formaldehyde with the help of hybrid films contained malachite green
– It is investigated the oxidative,reductive properties of some basic dyes in the influence of KBrO3 and formaldehyde in the water solutions as well as in the hybrid films (HF) based on silica and cation exchanging polyelectrolytes. Within the series of the studied dyes the trifenylmethane dye malachite green (MG) is the most strongly hold on the surface of HF and takes part in the oxidative,reductive reactions. The methodic of spectrophotometric determination of formaldehyde with the help of HF,MG is developed. It is based on the oxidation of immobilized dye by KBrO3which is accelerated by formaldehyde. The oxidation products are determined on the surface of HF. A calibration graph for formaldehyde determination using HFMG is linear in the range of 5*10,5–2*10,4 mol/l (R2 > 0,99, Sr = 0,02), limit of detection is 5*10,5 mol/l.
Keywords: malachite green, formaldehyde, sorption, hybrid films, solgel synthesis, polyelectrolytes
Publisher:Taras Shevchenko National University, Kiev Ukraine
(Analytical chemistry department at Taras Shevchenko
National University, 64 Vladimirskaya STR., Kiev, 01601 UKRAINE)
analysis@univ.kiev.ua,
www.univ.kiev.ua,
+380-44-2393266
The journal is indexed in SCOPUS and Web of Science
The journal website: www.moca.net.ua
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CC BY 4.0
