Analytical properties of 1-(2-pyridylazo)-2-naphthol immobilized on a polymethacrylate matrix

Гавриленко, Н. А.; Saranchina, N. V.

doi:10.1134/s1061934809030034

Cited by 15 publications

(16 citation statements)

References 10 publications

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“…Immobilization of PAN in a polymethacrylate matrix was carried out by adsorbing the reagent from its solution under static conditions for 1-10 min. The amount of the reagent adsorbed in the matrix was calculated by the method presented in [18].…”

Section: Solutions and Reagentsmentioning

confidence: 99%

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A colorimetric sensor based on a polymethacrylate matrix with immobilized 1-(2-pyridylazo)-2-naphthol for the determination of cobalt

2015

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A colorimetric sensor is proposed for the determination of cobalt. It is prepared by immobilizing 1 (2 pyridylazo) 2 naphthol (PAN) in an optically transparent polymethacrylate matrix. The conditions for determining cobalt by the proposed colorimetric sensor are found in the study of the complexation of cobalt with a PAN modified polymethacrylate matrix. The determination is based on the interaction of the sensor with a cobalt solution at pH 4 for 5 min, followed by the measurement of absorbance at 620 nm. The sensor ensures the determination of 0.05-0.50 mg/L of cobalt with the detection limit 0.03 mg/L. It is demonstrated that the sensor can be used for the determination of cobalt in the Cyanocobalamin medical preparation and potable water.

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Section: Solutions and Reagentsmentioning

confidence: 99%

“…The methods for the determination of cobalt in the solid phase using PAN immobilized in acetate cellulose membrane and silica gel are reported [7,[15][16][17]. It is shown that PAN keeps its chemical and ana lytical properties after immobilization in a poly methacrylate matrix; therefore, it can be used for determining metals [18].…”

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confidence: 99%

A colorimetric sensor based on a polymethacrylate matrix with immobilized 1-(2-pyridylazo)-2-naphthol for the determination of cobalt

2015

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“…25,30 FTIR spectra shown in Fig. 2 indicate a new ester bond formation (n ¼ 1737.07 cm À1 ) between the hydroxyl groups of PAN and carboxylate groups of PAA.…”

Section: Resultsmentioning

confidence: 97%

“…Previously, the intrinsic absorbance of PAN had been determined to be 470 nm. 30 However, the absorbance maximum of the new PANfunctionalized molecule was slightly red shifted to 479 nm. The emission maximum of the nanofiber mat was at 557 nm which is indicative of a good Stokes' shift.…”

Section: Resultsmentioning

confidence: 99%

A highly selective and sensitive pyridylazo-2-naphthol-poly(acrylic acid) functionalized electrospun nanofiber fluorescence “turn-off” chemosensory system for Ni2+

et al. 2012

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A fluorescent nanofiber probe for the determination of Ni 2+ was developed via the electrospinning of a covalently functionalized pyridylazo-2-naphthol-poly(acrylic acid) polymer. Fluorescent nanofibers with diameters in the range 230-800 nm were produced with uniformly dispersed fluorophores. The excitation and emission fluorescence were at wavelengths 479 and 557 nm respectively, thereby exhibiting a good Stokes' shift. This Ni 2+ probe that employs fluorescence quenching in a solid receptor-fluorophore system exhibited a good correlation between the fluorescence intensity and nickel concentration up to 1.0 mg mL À1 based on the Stern-Volmer mechanism. The probe achieved a detection limit (3d/S) of 0.07 ng mL À1 and a precision, calculated as a relative standard deviation (RSD) of <4% (n ¼ 8). The concentration of Ni 2+ in a certified reference material (SEP-3) was found to be 0.8986 mg mL À1 , which is significantly comparable with the certified value of 0.8980 mg mL À1 . The accuracy of the determinations, expressed as a relative error between the certified and the observed values of certified reference groundwater was #0.1%. The versatility of the nanofiber probe was demonstrated by affording simple, rapid and selective detection of Ni 2+ in the presence of other competing metal ions by direct analysis, without employing any further sample handling steps.

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“…So far, some polymers have been reported to be used for immobilization of various specific ligands. Among them are cellulose three acetate (CTA) with PAN for Cd(II) analysis [10], 2-amino-cyclopentane-1-dithiocarboxylic acid for Cd(II) analysis [11], dithizone for Cd(II) [12], 5(p-dimethylaminobenzylidene)rhodanine for Ag(I) [13], indophenol for Ni(II) [14], polymethacrylate (PMA) with PAN for Co, Cd, Ni, Cu, Zn, Mn, and Pb [15][16], with dithizone for Ag(I) [17]. Other reports have also used polyvinyl chloride (PVC) with 2-mercaptopyrimidine for Hg [18], with c-methylcalix [4]resorcinarene (CMCR) for Ti(III) [19], 4-(2-pyridylazo)resorcinol (PAR) for thallium [20], bis(thiophenol)-4,4´-methylenedianiline for Hg(II) [21], PAN for Cr(III) [22].…”

Section: Introductionmentioning

confidence: 99%

PAN-Immobilized PVC-NPOE Membrane for Environmentally Friendly Sensing of Cd(II) Ions

et al. 2017

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Analytical properties of 1-(2-pyridylazo)-2-naphthol immobilized on a polymethacrylate matrix

Cited by 15 publications

References 10 publications

A colorimetric sensor based on a polymethacrylate matrix with immobilized 1-(2-pyridylazo)-2-naphthol for the determination of cobalt

A colorimetric sensor based on a polymethacrylate matrix with immobilized 1-(2-pyridylazo)-2-naphthol for the determination of cobalt

A highly selective and sensitive pyridylazo-2-naphthol-poly(acrylic acid) functionalized electrospun nanofiber fluorescence “turn-off” chemosensory system for Ni2+

PAN-Immobilized PVC-NPOE Membrane for Environmentally Friendly Sensing of Cd(II) Ions

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