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Microchemical Journal, Devoted to the Application of Microtechniques in All Branches of Science, 40, 94-94 (1989)
Dendi Susanto et al.
Journal of mass spectrometry : JMS, 46(5), 508-516 (2011-04-27)
Quantitation of iron oxide (Fe(2)O(3)) in pharmaceutical formulations using electrospray ionization mass spectrometry (ESI-MS) following iron complexation with 4-(2-pyridylazo)resorcinol (PAR) was evaluated. Complexation of Fe(III) with PAR was found to produce an intense mass spectral signal at low pH compared
Daryoush Afzali et al.
Journal of AOAC International, 91(6), 1430-1434 (2009-02-11)
The application of organo nanoclay 1-(2-pyridylazo)-2-naphthol (PAN)-immobilized as a new, easily prepared, and stable solid sorbent for preconcentration of trace amounts of Cu2+, Ni2+, and Mn2+ ions in aqueous solution is presented. The organo nanoclay was prepared by adding tetradecyldimethylbenzylammonium
Kyle Lakatos et al.
Human vaccines & immunotherapeutics, 16(8), 1957-1968 (2020-01-30)
More effective rotavirus vaccines are essential for preventing extensive diarrheal morbidity and mortality in children under five years of age in low-resource regions. Nonreplicating rotavirus vaccines (NRRV) administered parenterally provide an alternate vaccination method to the current licensed oral vaccine.
Leandro Rodrigues de Lemos et al.
Journal of hazardous materials, 237-238, 209-214 (2012-09-11)
We investigated the extraction behavior of Cu(II) in the aqueous two-phase system (ATPS) formed by (L35+MgSO(4)+H(2)O) or (L35+(NH(4))(2)SO(4)+H(2)O) in the presence of the extracting agent 1-(2-pyridylazo)-2-naphthol (PAN). At pH=3 and a PAN concentration of 0.285 mmol kg(-1), both ATPS lead
Puja Prasad et al.
Dalton transactions (Cambridge, England : 2003), 42(13), 4436-4449 (2013-01-31)
Planar triazinium cationic species from vanadyl-assisted cyclization of 1-(2-thiazolylazo)-2-naphthol (H-TAN, 1), 1-(2-pyridylazo)-2-naphthol (H-PAN, 2), 2-(2'-thiazolylazo)-p-cresol (H-TAC, 3) and 6-(2'-thiazolylazo)-resorcinol (H-TAR, 5) were prepared and characterized. A dioxovanadium(V) species [VO(2)(TAR)] (4) was also isolated. Compounds 1, 2 and 4 were structurally
Abbas Afkhami et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 60(1-2), 181-186 (2003-12-13)
A very simple and selective spectrophotometric method for simultaneous determination of Co(II) and Ni(II) by 1-(2-pyridylazo) 2-naphthol (PAN), in micellar media, using H-point standard addition method (HPSAM) is described. The ligand and its metal complexes (Co(II)-PAN and Ni(II)-PAN) were made
Hui-ru Dong et al.
Guang pu xue yu guang pu fen xi = Guang pu, 24(3), 345-347 (2005-03-12)
The nature of palladium (I) and copper (II) is very similar, so it is very difficult to determine trace palladium (II) in the coexistence of a great quantity of copper (II). This paper applied ion floatation-spectrophotometric principle, using 1-(2-pyridylazo)-2-naphthol (PAN)
Mustafa Tuzen et al.
Journal of hazardous materials, 121(1-3), 79-87 (2005-05-12)
A preconcentration/separation procedure is presented for the solid phase extraction of trace cadmium and lead ions as their 1-(2-pyridylazo) 2-naphthol (PAN) chelates in environmental samples on Chromosorb-106 resin, prior to cadmium and lead determinations by atomic absorption spectrometry. The preconcentration
Luis Carvalho et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 92, 139-145 (2015-03-11)
The hemolytic activity and solubilizing capacity of two families of non-reducing trisaccharide fatty acid monoesters have been studied to assess their usefulness as surfactants for pharmaceutical applications. The carbohydrate-based surfactants investigated included homologous series of raffinose and melezitose monoesters bearing
Analytical Sciences, 5, 601-601 (1989)
Anupreet Kaur et al.
Journal of AOAC International, 93(4), 1302-1307 (2010-10-07)
A new analytical method using 1-(2-pyridylazo)-2-naphthol (PAN)-modified SiO2 nanoparticles as solid-phase extractant has been developed for the preconcentration of trace amounts of Sb(III) in different water samples. Conditions of the analysis such as preconcentration factor, effect of pH, sample volume
Habibollah Eskandari
Annali di chimica, 94(7-8), 591-599 (2004-09-07)
1-(2-Pyridylazo)-2-naphthol (PAN) has been used for the simultaneous determination of nickel and palladium at trace levels. PAN complexes of nickel and palladium in the pH 1.98 form red and green colored complexes, respectively, which are soluble in aqueous 4:1 Triton
Dengqing Zhang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 90, 35-39 (2012-02-07)
A copper (II) complex of azo-dye (Cu-1) has been synthesized by the reaction of 1-(2-pyridylazo)-2-naphthol (1) with copper (II) chloride. The complex Cu-1 is able to selectively sense hydrogen sulfide over other anions followed by the release of compound 1
László Szabó et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 93, 266-273 (2012-04-10)
The development of surface-enhanced Raman scattering (SERS) as a prospective analytical methodology for detection of metal ions was shown in recent years by several studies on metal complexes. In this work, 1-(2-pyridylazo)-2-naphthol (PAN) and its Al(III), Mn(II), Fe(III), Cu(II), Zn(II)
Halil İbrahim Ulusoy et al.
Talanta, 88, 516-523 (2012-01-24)
A new micelle-mediated separation and preconcentration method was developed for ultra-trace quantities of mercury ions prior to spectrophotometric determination. The method is based on cloud point extraction (CPE) of Hg(II) ions with polyethylene glycol tert-octylphenyl ether (Triton X-114) in the
Fresenius Journal of Analytical Chemistry, 329, 750-750 (1988)
Spectrophotometric Investigation of Analytical Reagent 1-(2-Pyridylazo)-2-naphthol and Its Copper Chelate.
Pease BF and Williams MB.
Analytical Chemistry, 31(6), 1044-1047 (1959)
Mohammad Ali Taher
Annali di chimica, 94(5-6), 437-446 (2004-07-29)
A highly selective, sensitive, rapid and economical differential pulse polarographic method has been developed for the determination of trace amount of lead in various samples after adsorption of its 1-(2-pyridylazo)-2-naphthol (PAN) on naphthalene in the pH range of 8.4 -
Hamid Fazelirad et al.
Journal of AOAC International, 97(4), 1159-1166 (2014-08-26)
A new and selective Cu(ll) ion imprinted polymer was prepared by formation of 1-(2-pyridylazo)-2-naphthol complex for selective extraction and preconcentration of Cu ions. Polymerization was performed with ethylene glycol dimethacrylate as a crosslinking monomer and methacrylic acid as a functional
Jafar Abolhasani et al.
Environmental monitoring and assessment, 187(1), 4176-4176 (2014-12-17)
Solid-phase extraction is one the most useful and efficient techniques for sample preparation, purification, cleanup, preconcentration, and determination of heavy metals at trace levels. In this paper, functionalized MCM-48 nanoporous silica with 1-(2-pyridylazo)-2-naphthol was applied for trace determination of copper
Habibollah Eskandari et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 20(7), 1095-1098 (2004-08-06)
The H-point standard addition method (HPSAM) has been applied for the simultaneous determination of nickel and copper in trace levels, using 1-(2-pyridylazo)-2-naphthol (PAN) as a chromogenic reagent in aqueous Tween 80 micellar media. Under the optimum condition, the simultaneous determinations
1-(2-Pyridylazo)-2-naphthol as possible analytical reagent.
Cheng KL and Bray RH.
Analytical Chemistry, 27(5), 782-785 (1955)
Shayesteh Dadfarnia et al.
Journal of hazardous materials, 173(1-3), 534-538 (2009-09-12)
A simple, highly sensitive and environment-friendly method for the determination of trace amount of nickel ion in different matrices is proposed. In the preconcentration step, the nickel from 10 mL of an aqueous solution was extracted into 500 microL of
Mahboubeh Shirani Bidabadi et al.
Journal of hazardous materials, 166(1), 291-296 (2009-01-02)
Solidified floating organic drop microextraction (SFODME), combined with graphite furnace atomic absorption spectrometry (GFAAS) was proposed for simultaneous separation/enrichment and determination of trace amounts of nickel and cobalt in surface waters and sea water. 1-(2-Pyridylazo)-2-naphthol (PAN) was used as chelating
Anderson S Souza et al.
Journal of hazardous materials, 141(3), 540-545 (2006-09-08)
An automatic on-line pre-concentration system is proposed for lead determination in drinking water using flame atomic absorption spectrometry (FAAS). Lead(II) ions are retained as the 1-(2-pyridylazo)-2-naphthol (PAN) complex in the walls of a knotted reactor, followed by an elution step
Jadranka Vuković et al.
Talanta, 94, 123-132 (2012-05-23)
This paper presents the development, characterization and quality control of analytical methods based on the use of disposable optical sensors for determination of heavy metals. Chromogenic reagents such as 1-(2-pyridylazo)-2-naphthol, (2-pyridylazo)resorcinol, Zincon, Ferrozine, and Chromazurol S were used to develop
Jane Holly Poplin et al.
Chemical communications (Cambridge, England), (20)(20), 2025-2027 (2007-08-24)
A simple approach to sensor development based on encapsulating a probe molecule in a cellulose support followed by regeneration from an ionic liquid solution is demonstrated here by the codissolution of cellulose and 1-(2-pyridylazo)-2-naphthol in 1-butyl-3-methylimidazolium chloride followed by regeneration
Z Safari et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 78(5), 1606-1610 (2011-03-09)
The complexation reactions between Ni(2+), Co(2+) and Zn(2+) metal ions with PAN in methanol (MeOH), acetonitrile (AN) and dimethyl sulfoxide (DMSO) were studied using a spectrophotometric method. The stability constants of the resulting complexes were determined from computer fitting absorbance
Yuan Zhang et al.
Guang pu xue yu guang pu fen xi = Guang pu, 25(4), 576-578 (2005-08-16)
In buffer solution of citric acid monohydrate-disodium hydrogen phosphate at pH 5-7.5, cobalt water samples were chelated by 1-(2-pyridylazo)-2-naphthol (PAN) to form Co-PAN. After water-bath at 66 degrees C for two hours, Co-PAN is extracted into Triton X-100 nonionic surfactant
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