A 2: 2: 2 complex of vanadium (V) with 4-(2-thiazolylazo) orcinol and 2, 3, 5-triphenyl-2H-tetrazolium chloride KB Gavazov, VB Delchev, KT Mileva, TS Stefanova, GK Toncheva Acta Chimica Slovenica 63 (2), 392-398, 2016 | 12 | 2016 |
Extraction-spectrophotometric investigations on two ternary ion-association complexes of gallium (III) K Stojnova, K Gavazov, G Toncheva, V Lekova, A Dimitrov Open Chemistry 10 (4), 1262-1270, 2012 | 12 | 2012 |
Liquid-liquid extraction and spectrophotometric characterization of some new ternary ion-association complexes of gallium (III) and indium (III) KB Gavazov, KT Stojnova, TS Stefanova, GK Toncheva, VD Lekova, ... chemija 23 (4), 278-285, 2012 | 12 | 2012 |
LIQUID-LIQUID EXTRACTION AND SPECTROPHOTOMETRIC CHARACTERIZATION OF A NEW TERNARY ION-ASSOCIATION COMPLEX OF IRON (III). K Gavazov, T Stefanova, G Toncheva Journal of Chemical Technology & Metallurgy 48 (6), 2013 | 8 | 2013 |
Ternary ion-association complexes between the indium (III)-4-(2-pyridylazo) resorcinol anionic chelate and some tetrazolium cations GK Toncheva, KB Gavazov, VD Lekova, KT Stojnova, AN Dimitrov Central European Journal of Chemistry 9, 1143-1149, 2011 | 8 | 2011 |
Application of 4-(2-pyridylazo) resorcinol for flotation-spectrophotometric determination of iron GK Toncheva, KB Gavazov, ZG Georgieva, LK Dospatliev, AB Peltekov, ... Bulletin of the Chemical Society of Ethiopia 30 (3), 325-332, 2016 | 7 | 2016 |
Liquid-Liquid Extraction-Chromogenic Systems Containing Iron (III), 4-Nitrocatechol and Tetrazolium Salts GK TONCHEVA, TS STEFANOVA, KB GAVAZOV | 7 | 2015 |
Ion-association between some ditetrazolium cations and anions originated from 4-(2-thiazolylazo) resorcinol or 4-(2-pyridylazo) resorcinol KB Gavazov, GK Toncheva Russian Journal of General Chemistry 85, 192-197, 2015 | 7 | 2015 |
Extraction-spectrophotometric studies on the ion-pairing between some 2, 3, 5-substituted monotetrazolium cations and anions deriving from 4-(2-thiazolylazo) resorcinol or 4-(2 … KB Gavazov, GK Toncheva Journal: Journal of Advances in Chemistry 5 (2), 2013 | 7 | 2013 |
Spectrophotometric determination of molybdenum (VI) as a ternary complex with 4-nitrocatechol and benzalkonium chloride VV Divarova, A Saravanska, G Toncheva, N Milcheva, VB Delchev, ... Molecules 27 (4), 1217, 2022 | 6 | 2022 |
Extraction-spectrophotometric and theoretical studies on a ternary complex obtained from vanadium (V) and 4-nitrocatechol AD Saravanska, PV Racheva, VV Divarova, GK Toncheva, NP Milcheva, ... Russian Journal of Inorganic Chemistry 66, 1880-1886, 2021 | 6 | 2021 |
Liquid-liquid extraction-chromogenic system for vanadium (V) based on 4-(2-thiazolylazo) orcinol (TAO) and Aliquat 336 GK Toncheva, NP Milcheva, KB Gavazov Acta Chim. Slov 65, 847-852, 2018 | 6 | 2018 |
Extraction-Chromogenic System for Nickel (II) Based on 5-methyl-4-(2-thiazolylazo) resorcinol and Aliquat 336. GK Toncheva, DG Hristov, NP Milcheva, KB Gavazov Acta Chimica Slovenica 67 (1), 2020 | 4 | 2020 |
Differentiation of Bulgarian wild fruits according to their mineral content G Toncheva, K Nikolova, D Boyadzhiev, I Alexieva, D Georgieva, ... Bulgarian Journal of Agricultural Science 22 (5), 857-861, 2016 | 4 | 2016 |
Extraction-Spectrophotometric Studies on the Complex Formation of Iron (III) with 4-(2-Thiazolylazo) Resorcinol and Tetrazolium Salts KB Gavazov, TS Stefanova, GK Toncheva Journal: Journal of Advances in Chemistry 10 (3), 2014 | 4 | 2014 |
Extractive Spectrophotometric Determination and Theoretical Investigations of Two New Vanadium (V) Complexes KB Gavazov, PV Racheva, AD Saravanska, GK Toncheva, VB Delchev Molecules 28 (18), 6723, 2023 | 3 | 2023 |
Complex Formation in a Liquid-Liquid Extraction System Containing Vanadium (IV/V), 2, 3-Dihydroxynaphtahlene and Thiazolyl Blue. GK Toncheva, ZT Zhelev, VB Delchev, KB Gavazov Acta Chimica Slovenica 65 (2), 2018 | 3 | 2018 |
An extraction-chromogenic system for vanadium (IV, V) based on 2, 3-dihydroxynaphtahlene KB Gavazov, GK Toncheva, VB Delchev Open Chemistry 14 (1), 197-205, 2016 | 3 | 2016 |
Estimation of differences in trace element composition of Bulgarian summer fruits using ICP-MS. G Toncheva, K Nikolova, D Georgieva, G Antova, V Kuneva | 3 | 2016 |
Specific features of tetranitrotetrazolium blue chloride as an extraction reagent for iron (III) KB Gavazov, VB Delchev, TS Stefanova, GK Toncheva, KK Simitchiev Russian Journal of General Chemistry 86, 1167-1176, 2016 | 3 | 2016 |