Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Kiril B. Gavazov"'
Publikováno v:
Molecules, Vol 29, Iss 18, p 4511 (2024)
The hydrophobic reagent 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR) was investigated as part of a cloud-point extraction (CPE) system for the spectrophotometric determination of Zn(II). In the system, complexes with different stoichiometries, includi
Externí odkaz:
https://doaj.org/article/a5b01eb2e1424479affaec9ce2a64b0f
Autor:
Kiril B. Gavazov, Petya V. Racheva, Antoaneta D. Saravanska, Galya K. Toncheva, Vasil B. Delchev
Publikováno v:
Molecules, Vol 28, Iss 18, p 6723 (2023)
Two new vanadium (V) complexes involving 6-hexyl-4-(2-thiazolylazo)resorcinol (HTAR) and tetrazolium cation were studied. The following commercially available tetrazolium salts were used as the cation source: tetrazolium red (2,3,5-triphenyltetrazol-
Externí odkaz:
https://doaj.org/article/e8c5e84c1d3d486c87a5a5f21189bd6c
Publikováno v:
Acta Chimica Slovenica, Vol 68, Iss 1, Pp 37-43 (2021)
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 benzalkonium chloride (BZC) as a cationic ion-association reagent. The optimum pH, concentration of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c0846dc50a0624c5a6315bcbc200f9f
https://journals.matheo.si/index.php/ACSi/article/view/6035
https://journals.matheo.si/index.php/ACSi/article/view/6035
Publikováno v:
Russian Journal of General Chemistry. 90:1351-1356
Two liquid-liquid extraction-chromogenic systems for GaIII based on azo dyes (ADs) and xylometazoline hydrochloride (XMH) have been studied. The ADs used were 4-(2-pyridylazo)resorcinol (PAR) and 4-(2-thiazolylazo)resorcinol (TAR). The optimum condit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d603d56544eef1fe2487c1f13b16c33
https://doi.org/10.1134/s1070363220070245
https://doi.org/10.1134/s1070363220070245
Publikováno v:
Acta Chimica Slovenica, Vol 67, Iss 1, Pp 151-158 (2020)
A water-isobutanol extraction-chromogenic system for Ni II , based on the azo dye 5-methyl-4-(2-thiazolylazo)resorcinol (MTAR; H 2 L) and the ionic liquid Aliquat 336 (A336), was studied. Under the optimal conditions ( c MTAR = 2.0 × 10 –4 mol dm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84a1c1f62870ae0438338422b7be415f
https://doi.org/10.17344/acsi.2019.5299
https://doi.org/10.17344/acsi.2019.5299
Autor:
Galya K. Toncheva, Petya Racheva, Nikolina Milcheva, Vitka Divarova, Nicole Parapanova, Kiril B. Gavazov
Publikováno v:
Book of Abstracts.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a4d4044155fb88714f09b3d4481d735
https://doi.org/10.21175/rad.spr.abstr.book.2022.15.1
https://doi.org/10.21175/rad.spr.abstr.book.2022.15.1
Publikováno v:
Chemical Papers. 74:1891-1901
A cloud point extraction-chromogenic system for vanadium determination containing 4-(2-thiazolylazo)resorcinol (TAR), H2O2, H2SO4, and Triton X-100 was investigated. Optimal conditions for the formation and extraction of a 1:2:1 (VV:O22−:TAR) terna
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f12febe1c372534a74bf5b723f8d644
https://doi.org/10.1007/s11696-019-01038-8
https://doi.org/10.1007/s11696-019-01038-8
Publikováno v:
Acta Chimica Slovenica, Vol 66, Iss 4, Pp 987-994 (2019)
Liquid-liquid extraction-chromogenic systems for vanadium(V) based on xylometazoline hydrochloride (XMZ) and azo derivatives of resorcinol (ADRs) were studied. The following ADRs were used: 4-(2-thiazolylazo)resorcinol (TAR), 5-methyl-4-(2-thiazolyla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c96eb9f02d1ffef2b55173b9f4f5c145
https://journals.matheo.si/index.php/ACSi/article/view/5244
https://journals.matheo.si/index.php/ACSi/article/view/5244
Publikováno v:
Russian Journal of General Chemistry. 89:2136-2142
In the presence of semicarbazide hydrochloride (SCH) and traces of AgI, the tetrazolium salt 2,5-diphenyl-3-(1-naphmyl)-2H-tetrazolium chloride (Tetrazolium violet, TV) is reduced in alkaline medium to intensely colored chloroform-extractable 3,5-dip
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c24d5cb075d9263c25bdd450c707c25
https://doi.org/10.1134/s1070363219100232
https://doi.org/10.1134/s1070363219100232
Publikováno v:
Open Chemistry, Vol 17, Iss 1, Pp 599-608 (2019)
The azo dye 4-(2-thiazolylazo)orcinol (TAO) and the cationic ion-pair reagent 2,3,5-triphenyl-2H-tetrazolium chloride (TTC) were examined as constituents of a water-chloroform extraction-chromogenic system for vanadium(IV). The effects of TAO concent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f284fa715fa77e88ff1f0fc6027d6326
https://doi.org/10.1515/chem-2019-0071
https://doi.org/10.1515/chem-2019-0071