Search Results - "Gavazov, Kiril B"

Mono- and Binuclear Complexes in a Centrifuge-Less Cloud-Point Extraction System for the Spectrophotometric Determination of Zinc(II) by Gavazov, Kiril B, Racheva, Petya V, Saravanska, Antoaneta D, Genc, Fatma, Delchev, Vassil B

“…The hydrophobic reagent 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR) was investigated as part of a cloud-point extraction (CPE) system for the…”
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Extractive Spectrophotometric Determination and Theoretical Investigations of Two New Vanadium(V) Complexes by Gavazov, Kiril B., Racheva, Petya V., Saravanska, Antoaneta D., Toncheva, Galya K., Delchev, Vasil B.

“…Two new vanadium (V) complexes involving 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR) and tetrazolium cation were studied. The following commercially available…”
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Complex formation in a liquid-liquid extraction-chromogenic system for vanadium(IV) by Gavazov, Kiril B., Delchev, Vassil B., Milcheva, Nikolina P., Toncheva, Galya K.

“…The azo dye 4-(2-thiazolylazo)orcinol (TAO) and the cationic ion-pair reagent 2,3,5-triphenyl-2 -tetrazolium chloride (TTC) were examined as constituents of a…”
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An extraction-chromogenic system for vanadium(IV,V) based on 2,3-dihydroxynaphtahlene by Gavazov, Kiril B., Toncheva, Galya K., Delchev, Vassil B.

“…A liquid-liquid extraction-chromogenic system for vanadium(IV, V) containing 2,3-dihydroxynaphtahlene (DN), 2,3,5-triphenyl-2H-tetrazolium chloride (TTC),…”
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A centrifuge-less cloud point extraction-spectrophotometric determination of copper(II) using 6-hexyl-4-(2-thiazolylazo)resorcinol by Racheva, Petya V., Milcheva, Nikolina P., Genc, Fatma, Gavazov, Kiril B.

“…[Display omitted] •A new cloud point extraction-chromogenic system for Cu(II) was studied.•A novel commercially available hydrophobic thiazolylazo dye was…”
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Recent advances in the application of nanoparticles in cloud point extraction by Gavazov, Kiril B., Hagarová, Ingrid, Halko, Radoslav, Andruch, Vasil

“…The current short review is devoted to cloud point extraction (CPE). It provides information about history, present status and future trends in the development…”
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A simple cloud point extraction-spectrophotometric method for total vanadium determination using 4-(2-thiazolylazo)resorcinol and H2O2 by Genç, Fatma, Milcheva, Nikolina P., Hristov, Danail G., Gavazov, Kiril B.

“…A cloud point extraction-chromogenic system for vanadium determination containing 4-(2-thiazolylazo)resorcinol (TAR), H 2 O 2 , H 2 SO 4 , and Triton X-100 was…”
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Extraction of Gallium(III) with a New Azo Dye in The Presence or Absence of Xylometazoline Hydrochloride by Racheva, Petya V, Milcheva, Nikolina P, Saravanska, Antoaneta D, Gavazov, Kiril B

“…Complex formation between Ga(III) and 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR, H2L) was studied in a water-chloroform medium, in the presence or absence of…”
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Nitroderivatives of catechol: from synthesis to application by Gavazov, Kiril B

“…Nitroderivatives of catechol (NDCs) are reviewed with special emphasis on their complexes and applications. Binary, ternary and quaternary NDC complexes with…”
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Liquid-Liquid Extraction-Spectrophotometric Investigations of Three Ternary Complexes of Vanadium(V) by Gavazov, Kiril B., Stefanova, Teodora S.

“…Complex formation and liquid-liquid extraction (LLE) were studied in systems containing vanadium(V), 5-methyl-4-(2-thiazolylazo)resorcinol (TAO), tetrazolium…”
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Complex Formation in a Liquid-Liquid Extraction System Containing Vanadium(IV/V), 2,3-Dihydroxynaphtahlene and Thiazolyl Blue by Toncheva, Galya K, Zhelev, Zlatimir T, Delchev, Vassil B, Gavazov, Kiril B

“…Liquid-liquid extraction systems for VIV/V containing 2,3-dihydroxynaphtahlene (DN) and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide…”
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Ion-association complexes of gallium(III)-4-(2-pyridylazo)-resorcinol anionic chelates and dicationic tetrazolium reagents by Stojnova, Kirila T, Gavazov, Kiril B, Lekova, Vanya D

“…The formation and liquid-liquid extraction of ion-association complexes between gallium(III)-4-(2-pyridylazo)resorcinol (PAR) anionic chelates and cations of…”
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Ternary complexes of vanadium(IV) with 4-(2-pyridylazo)-resorcinol (PAR) and ditetrazolium chlorides (DTC) by Genç Fatma, Gavazov Kiril, Türkyilmaz Murat

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Application of 4-(2-pyridylazo)resorcinol for flotation-spectrophotometric determination of iron by Toncheva, Galya K, Gavazov, Kiril B, Georgieva, Zlatka G, Dospatliev, Lilko K, Peltekov, Alexander B, Boyanov, Boyan S

“…Optimum conditions for flotation-spectrophotometric determination of iron with 4-(2-pyridylazo)resorcinol (PAR) based on a 1:2 FeII-PAR complex were found to…”
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Extraction-spectrophotometric investigations on two ternary ion-association complexes of gallium(III) by Stojnova Kirila, Gavazov Kiril, Toncheva Galya, Lekova Vanya, Dimitrov Atanas

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An environmentally friendly cloud point extraction–spectrophotometric determination of trace vanadium using a novel reagent by Milcheva, Nikolina P., Genç, Fatma, Racheva, Petya V., Delchev, Vassil B., Andruch, Vasil, Gavazov, Kiril B.

“…•A CPE-chromogenic system for total vanadium determination was studied.•The system involves a novel commercially available reagent, HTAR.•HTAR was investigated…”
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Extraction System for the Spectrophotometric Determination of Tungsten(VI) with 4-Nitrocatechol and Benzalkonium Chloride by Divarova, Vidka Vassileva, Stojnova, Kirila Trifonova, Radkovska, Ivelina Dobromirova, Saravanska, Antoaneta Dimitrova, Toncheva, Galya Kostadinova, Delchev, Vassil Borisov, Gavazov, Kiril Blazhev

“…A novel chromogenic system for the liquid-liquid extraction and determination of trace amounts of tungsten(VI) was investigated. The system comprises…”
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Extraction-Chromogenic Systems for Vanadium(V) Based on Azo Dyes and Xylometazoline Hydrochloride by Hristov, Danail Georgiev, Milcheva, Nikolina Petkova, Gavazov, Kiril Blazhev

“…Liquid-liquid extraction-chromogenic systems for vanadium(V) based on xylometazoline hydrochloride (XMZ) and azo derivatives of resorcinol (ADRs) were studied…”
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Phenylmethoxybis(tetrazolium) ion-association complexes with an anionic indium(III) — 4-(2-pyridylazo)resorcinol chelate by Stefanova Teodora, Gavazov Kiril

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The solvent extraction and spectrophotometric determination of vanadium (V) with 4-(2-thiazolylazo)resorcinol and tetrazolium salts by Gavazov Kiril, Lekova Vanya, Dimitrov Atanas, Patronov Georgi

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