Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Denys Snigur"'
Publikováno v:
مجلة علوم ذي قار, Vol 11, Iss 1 (2024)
The azo-azomethine dye 6,6'-((1E,1'E)-((4-methyl-1,2-phenylene)bis(azanylylidene))bismethanylylidene))bis(2-methoxy-3-(o-tolyldiazenyl) phenol) (L3) were synthesized and characterized by UV-visible, FT-IR, 1H-NMR and Mass spectroscopy. The effect of
Externí odkaz:
https://doaj.org/article/49ad714068c54fee8e16910c68d0b0f1
Publikováno v:
Acta Chimica Slovenica, Vol 67, Iss 4, Pp 1118-1123 (2020)
A novel dispersive liquid-liquid semi-microextraction (DLLsME) procedure for copper(II) preconcentration is proposed. The system containing copper(II) and 6,7-dihydroxy-2,4-diphenylbenzopyrylium chloride (DHDPhB), after addition a mixture of chlorofo
Externí odkaz:
https://doaj.org/article/ed41cfda6a3b47809f98634cddf184bb
Autor:
Alexander Chebotarev, Vitaliy Dubovyi, Dmytro Barbalat, Elena Guzenko, Kateryna Bevziuk, Denys Snigur
Publikováno v:
Acta Chimica Slovenica, Vol 66, Iss 1, Pp 163-167 (2019)
In the present study a kinetic-spectrophotometric method for thiocyanate determination is described. The suggested method for the determination of thiocyanate is based on its “Landolt effect” on the reaction of bromate with hydrobromic acid, whic
Externí odkaz:
https://doaj.org/article/6a56a1c1348849bb9c95dc75cf6a577f
Autor:
Konstantin Pliuta, Denys Snigur
Publikováno v:
Acta Chimica Slovenica. 70:163-171
One of the disadvantages of voltammetric analysis is the significant amount of sample required for electrolysis in the cell. In this paper a methodology close to adsorption stripping voltammetry was proposed to solve this problem at an analysis of tw
Autor:
Denys Snigur, Vitaliy Dubovyi, Michael Arabadji, Kateryna Bevziuk, Viacheslav Muratov, Dmytro Barbalat, Olena Zhukovetska
Publikováno v:
International Journal of Environmental Analytical Chemistry. :1-10
A novel environmentally friendly rapid cloud point extraction at room temperature coupled to graphite furnace atomic absorption spectroscopy (RT-CPE-GFAAS) for Copper (II) traces quantification was developed. Were found the most optimal conditions fo
Publikováno v:
Journal of Solution Chemistry.
Autor:
Denys Snigur, Vitaliy Duboviy, Dmytro Barbalat, Olena Zhukovetska, Alexandr Chebotarev, Kateryna Bevziuk
Publikováno v:
Analytical Sciences. 38:949-954
The conditions for the surfactant rich phase of Triton X-100 formation and the extraction of Copper (II) as a complex with 6,7-dihydroxy-2,4-diphenylbenzopyrylium chloride at room temperature have been optimized. It was shown that the sodium salt of
Autor:
Konstantin Pliuta, Denys Snigur
Publikováno v:
ChemistrySelect. 7
Autor:
Vasil Andruch, Alina Kalyniukova, Justyna Płotka-Wasylka, Natalia Jatkowska, Denys Snigur, Serhii Zaruba, Julia Płatkiewicz, Agnieszka Zgoła-Grześkowiak, Justyna Werner
Publikováno v:
Microchemical Journal. 189:108509
Autor:
Konstantin Pliuta, Denys Snigur
Publikováno v:
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry. 38(11)
For food quality control methods, low cost, speed, and simplicity are essential. Electrochemical methods can satisfy all of these requirements. In this paper, we propose a fast and simple voltammetric method using a carbon-paste electrode modified wi