Search Results - "Milcheva, Nikolina P"

Use of a Hydrophobic Azo Dye for the Centrifuge-Less Cloud Point Extraction-Spectrophotometric Determination of Cobalt by Gavazov, Kiril Blazhev, Racheva, Petya V, Milcheva, Nikolina P, Divarova, Vidka V, Kiradzhiyska, Denitsa Dimitrova, Genç, Fatma, Saravanska, Antoaneta D

“…The hydrophobic azo dye 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR, H L) was studied as part of a system for the centrifuge-less cloud point extraction…”
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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-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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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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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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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-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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