Search Results - "Snigur, Denys"

Thermosolvatochromic Behavior of Quinolinium and Pyridinium 4-Hydroxystyryl Dyes in Solutions by Zhukova, Yuliya, Studenyak, Yaroslav, Mariychuk, Ruslan, Snigur, Denys

“…In the current study a number of 4-hydroxystyryl dyes (4-HSD), 4-[-2-(4-hydroxy-3-methoxyphenyl)vinyl]-1-octylpyridinium bromide (4OP-MS) and…”
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A rapid cloud point extraction of Molybdenum(VI) with 6,7-dihydroxy-2,4-diphenylbenzopyrylium perchlorate prior to its spectrophotometric determination by Snigur, Denys, Barbalat, Dmytro, Chebotarev, Alexander, Synievyd, Anastasiia, Bevziuk, Kateryna

“…A novel and rapid cloud point extraction at room temperature (RT-CPE) for preconcentration of Molybdenum(VI) binded with…”
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Cloud Point Extraction Coupled to Flame Atomic Absorbance Spectroscopy for Cobalt (II) determination with Azo-Azomethine Dye by Affat, Sajda, Al – Shamkhawy, Saher, Snigur, Denys

“…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…”
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Dispersive liquid–liquid semi-microextraction of molybdenum(VI) with 6,7-dihydroxy-2,4-diphenylbenzopyrylium chloride for its spectrophotometric determination by Klochkova, Anastasiia, Barbalat, Dmytro, Chebotarev, Alexander, Snigur, Denys

“…A novel sensitive dispersive liquid–liquid semi-microextraction method for molybdenum(VI) preconcentration was developed. Organic phase in a solution that…”
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Determination of Carmoisine onto Carbon‐Paste Electrode Modified by Silica Impregnated with Cetylpyridinium Chloride by Chebotarev, Alexander N., Pliuta, Konstantin V., Snigur, Denys V.

“…In this paper a simple, cheap and sensitive electrochemical sensor for determination of Carmoisine in soft drinks was developed. Carmoisine is a synthetic azo…”
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Dispersive Liquid-Liquid Semi-Microextraction of Сu(II) with 6,7-dihydroxy-2,4-diphenylbenzopyrylium Chloride for its Spectrophotometric Determination by Chebotarev, Alexander, Klochkova, Anastasiia, Dubovyi, Vitaliy, Snigur, Denys

“…A novel dispersive liquid-liquid semi-microextraction (DLLsME) procedure for copper(II) preconcentration is proposed. The system containing copper(II) and…”
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Protonation of Patented Blue V in aqueous solutions: theoretical and experimental studies by Bevziuk, Kateryna, Chebotarev, Alexander, Fizer, Maksym, Klochkova, Anastasiia, Pliuta, Konstantin, Snigur, Denys

“…The acid-base properties of the Patented Blue V dye were studied by spectrophotometry and tristimulus colourimetry. The mechanism of protonation of Patented…”
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Room temperature cloud point extraction: An application to preconcentration and spectrophotometric determination of copper(II) by Snigur, Denys, Chebotarev, Alexander, Dubovyi, Vitaliy, Barbalat, Dmytro, Klochkova, Anastasiia

“…The novel cloud point extraction procedure for preconcentration of copper(II) was discovered. A simple chemical method for initiating the cloud point…”
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Kinetic-Spectrophotometric Determination of Thiocyanate in Human Saliva Based on Landolt Effect in Presence of Astrafloxine FF by Chebotarev, Alexander, Dubovyi, Vitaliy, Barbalat, Dmytro, Guzenko, Elena, Bevziuk, Kateryna, Snigur, Denys

“…In the present study a kinetic-spectrophotometric method for thiocyanate determination is described. The suggested method for the determination of thiocyanate…”
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Carbon-paste electrode modified by β-cyclodextrin as sensor for voltammetric determination of Tartrazine and Carmoisine from one drop by Pliuta, Konstantin, Snigur, Denys

“…For food quality control methods, low cost, speed, and simplicity are essential. Electrochemical methods can satisfy all of these requirements. In this paper,…”
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Determination of Allura Red AC with a β‐Cyclodextrin‐Modified Carbon Paste Electrode by Pliuta, Konstantin, Snigur, Denys

“…The problem of reducing the amount of the analyzed sample and waste during chemical analysis has recently received special attention. In this paper, a method…”
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Carbon-Paste Electrode Modified by β-Cyclodextrin as Sensor for Determination of Sunset Yellow FCF and Ponceau 4R in Soft Drinks by Pliuta, Konstantin, Snigur, Denys

“…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…”
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Fast room temperature cloud point extraction procedure for spectrophotometric determination of phosphate in water samples by Snigur, Denys, Chebotarev, Alexander, Bulat, Kseniia, Duboviy, Vitaliy

“…A novel fast room temperature cloud point extraction (RT-CPE) procedure for preconcentration and spectrophotometric determination of phosphate based on the…”
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Spectroscopic and computational studies of erythrosine food dye protonation in aqueous solution by Snigur, Denys, Fizer, Maksym, Chebotarev, Alexander, Lukianova, Olena, Zhukovetska, Olena

“…In the current study the acid-base properties and some spectrophotometric characteristics of the food dye Erythrosine are studied in detail. Via DFT…”
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Switchable hydrophilicity solvent-assisted solidified floating organic drop microextraction for separation and determination of arsenic in water and fish samples by Semysim, Farah Abdulraouf, Ridha, Rana Kadhim, Azooz, Ebaa Adnan, Snigur, Denys

“…The aim of the current study was to separate and determine arsenic in water and fish samples using a novel and green solidified floating organic drop…”
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Recent innovations in cloud point extraction towards a more efficient and environmentally friendly procedure by Snigur, Denys, Azooz, Ebaa Adnan, Zhukovetska, Olena, Guzenko, Olena, Mortada, Wael

“…The cloud point extraction method (CPE) has gotten a lot of attention since it was first discovered, and a lot of research and reviews have been published in…”
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Low-density solvent-based liquid-liquid microextraction for separation of trace concentrations of different analytes by Snigur, Denys, Azooz, Ebaa Adnan, Zhukovetska, Olena, Guzenko, Olena, Mortada, Wael

“…The development of analytical chemistry in the last decade is inextricably linked with the involvement of the concepts of “green” chemistry. In analytical…”
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Voltammetric Determination of Allura Red AC onto Carbone‐paste Electrode Modified by Silica with Embedded Cetylpyridinium Chloride by Pliuta, Konstantin, Chebotarev, Alexander, Pliuta, Anastasia, Snigur, Denys

“…In current study the carbon‐paste electrode modified by silica with embedded cetylpyridinium chloride for determination of Allura Red AC have been developed…”
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Synthesis and properties of 6,7-dihydroxybenzopyrylium perchlorate halogen derivatives: X-ray, spectroscopic and theoretical studies by Snigur, Denys, Barbalat, Dmytro, Fizer, Maksym, Chebotarev, Alexander, Shishkina, Svitlana

“…This study describes the synthesis of 6,7-dihydroxy-4-methyl-2-phenylbenzopyrylium perchlorate halogen derivatives and its spectroscopic and theoretical…”
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Structural peculiarities of new benzopyrylium dyes: X-ray, FT-IR, and DFT complex study by Fizer, Maksym, Fizer, Oksana, Barbalat, Dmytro, Shishkina, Svitlana, Snigur, Denys

“…•Structural peculiarities of new halogen(F/Cl/Br/I)-containing benzopyrylium dyes.•The phenyl ring rotation barrier correlates with the halogen size.•Hirshfeld…”
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