Search Results - "Toncheva Galya"

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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Spectrophotometric Determination of Molybdenum(VI) as a Ternary Complex with 4-Nitrocatechol and Benzalkonium Chloride by Divarova, Vidka V, Saravanska, Antoaneta, Toncheva, Galya, Milcheva, Nikolina, Delchev, Vassil B, Gavazov, Kiril

“…A new liquid-liquid extraction system for molybdenum(VI) was studied. It contains 4-nitrocatechol (4NC) as a complexing chromogenic reagent and benzalkonium…”
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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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Liquid-Liquid Extraction-Chromogenic System for Vanadium(V) Based on 4-(2-thiazolylazo)orcinol (TAO) and Aliquat 336 by Toncheva, Galya K, Milcheva, Nikolina P, Gavazov, Kiril Blazhev

“…The quaternary ammonium salt Aliquat 336 (A336; R4N+Cl-) and the azo dye 4-(2-thiazolylazo)orcinol (ТАО) were examined as constituents of a water-isobutanol…”
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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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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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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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Extraction-Chromogenic System for Cobalt Based on 5-Methyl-4-(2-thiazolylazo) Resorcinol and Benzalkonium Chloride by Hristov, Danail G. Georgiev, Racheva, Petya Vassileva, Toncheva, Galya Konstantinova, Gavazov, Kiril Blazhev

“…The interaction between CoII and 5-methyl-4-(2-thiazolylazo)-resorcinol (MTAR) was studied in a water-chloroform system, in the presence or absence of…”
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Extraction-Chromogenic System for Nickel(II) Based on 5-methyl-4-(2-thiazolylazo)resorcinol and Aliquat 336 by Toncheva, Galya Konstantinova, Hristov, Danail Georgiev, Milcheva, Nikolina Petkova, Gavazov, Kiril Blazhev

“…A water-isobutanol extraction-chromogenic system for NiII, based on the azo dye 5-methyl-4-(2-thiazolylazo)resorcinol (MTAR; H2L) and the ionic liquid Aliquat…”
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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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A 2:2:2 Complex of Vanadium(V) with 4-(2-Thiazolylazo)orcinol and 2,3,5-Triphenyl-2H-Tetrazolium Chloride by Gavazov, Kiril Blazhev, Delchev, Vassil Borisov, Mileva, Kremena Tomova, Stefanova, Teodora Stefcheva, Toncheva, Galya Kostadinova

“…The complex formation in the vanadium(V)/4-(2-thiazolylazo)orcinol (TAO)/2,3,5-triphenyl-2H-tetrazolium chloride (TTC) liquid-liquid extraction-chromogenic…”
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