Sorption-Photometric Determination of 1-Naphthol with Polyurethane Foams

Дмитриенко, С. Г.; Myshak, E. N.; Zhigulyev, A. V.; Runov, V. K.; Zolotov, Yu. A.

doi:10.1080/00032719708001763

Cited by 13 publications

(10 citation statements)

References 7 publications

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“…An approach combining preconcentration by PUF and direct determination on the sorbent by thin layer spectrophotometry [11], diffuse reflectance spectroscopy [12,13,14,15,16,17], luminescence [18,19,20,21] or X-ray fluorescence [22] also seems promising.…”

Section: Introductionmentioning

confidence: 99%

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Polyurethane foams as solid chromogenic reagents for diffuse reflectance spectroscopy

Дмитриенко

et al. 2002

Analytical and Bioanalytical Chemistry

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The chemical reactions of the functional groups in polyurethane foams (PUF) have been studied by use of diffuse reflectance spectroscopy and infrared spectroscopy. It was found that the functional groups are highly reactive towards diazotization by sodium nitrite, azo coupling with 4-nitrophenyldiazonium tetrafluoroborate, oxidation by active chlorine, and condensation with formaldehyde, resulting in the formation of intensely colored products. Heterogeneous chemical reactions of PUF with these compounds in aqueous solution proceed rapidly at room temperature and at low solute concentrations. PUF do not undergo degradation as a result of chemical interactions. The linear response of the Kubelka-Munk function to analyte concentration makes it possible to recommend PUF as solid chromogenic reagents for the determination of nitrite, nitrate, and 1- and 2-naphthols.

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Section: Introductionmentioning

confidence: 99%

“…One approach is based on the sorption of colored compounds formed by an analytical reagent and the test component in the analyzed solution. This approach has been applied to metal ions [12], phenols [13], 1-naphthol [16], and cationic [14] and anionic [15] surfactants. Another approach is based on the use of loaded PUF.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane foams as solid chromogenic reagents for diffuse reflectance spectroscopy

Дмитриенко

et al. 2002

Analytical and Bioanalytical Chemistry

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“…Recently, many studies have shown that the functional groups of PUF are highly reactive towards diazotization by sodium nitrite and azo coupling with α-naphthol [25], β-naphthol [25], resorcinol [25] and 4-nitrophenyldiazonium tetrafluoroborate [26,27]. It has also been found that the azo derivatives formed have retained ions by the cation chelation mechanism.…”

Section: Introductionmentioning

confidence: 99%

The chromatographic behavior of group (IIB) metal ions on polyurethane foam functionalized with 8-hydroxyquinoline

El‐Shahat

Moawed

Zaid

2004

Analytical and Bioanalytical Chemistry

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Polyurethane foam functionalized with 8-hydroxyquinoline has been prepared by coupling the foam matrix with 8-hydroxyquinoline (oxine) through an azo spacer. The oxine-bonded foam (Ox PUF) was characterized by use of different tools (UV-Vis spectra, IR spectra, density, and stability). Ox PUF was found to be very suitable for separation and preconcentration of trace metals, e.g. Zn(II), Cd(II), and Hg(II) ions, from wastewater in the pH ranges 2-12, 9-12, and 3-6, respectively. Various conditions influencing the sorption of these metal ions on to Ox PUF were optimized. Extraction of the metal ions was accomplished in 15 to 20 min. Study of the variation of the sorption of the tested metal ions with temperature yielded average values for DeltaH, DeltaS, and DeltaG of 41.99, 158.23, and -5.1 kJ mol(-1), respectively. The capacities of the foam material were 0.27, 0.16, and 0.09 mmol g(-1) for Zn(II), Cd(II), and Hg(II), respectively. Preconcentration factors >50 were achieved (RSD approximately 6.18). The quantitative results were obtained from experiments performed using certified reference materials.

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“…Therefore, the pre-concentration of naphthol derivates by means of liquid-liquid or solid-phase extraction (SPE) is commonly used in sample preparation prior to photometric determination [ 9 , 10 , 12 – 14 ]. Several approaches for selective SPE were proposed in literature: (1) pre-concentration of 1-naphthol derivate on silica with immobilized Co 3+ [ 12 ] or polyurethane foam [ 13 ]; (2) formation of inclusion complexes of naphthols and 3-Br-1-propanol in β-cyclodextrine [ 10 ]; (3) microextraction of 1-naphthol on a glass capillary modified with polydimethylsiloxane-divinylbenzene [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Solid-Phase Spectrophotometric Analysis of 1-Naphthol Using Silica Functionalized with m-Diazophenylarsonic Acid

et al. 2016

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The m-aminophenylarsonic acid (m-APAA) was immobilized onto the silica gel surface with covalently grafted quaternary ammonium groups via ion exchange. The diazotization of ion-bonded m-APAA resulted in a new solid-phase spectrophotometric reagent for detection of 1-naphtol in environmental water samples. The procedure of solid-phase spectrophotometric analysis is characterized by 20 μg L−1 limit of detection (LOD) of 1-naphtol, up to 2000 concentration factor, and insensitivity to the presence of natural water components as well as to 30-fold excess of phenol, resorcinol, and catechol.

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Sorption-Photometric Determination of 1-Naphthol with Polyurethane Foams

Cited by 13 publications

References 7 publications

Polyurethane foams as solid chromogenic reagents for diffuse reflectance spectroscopy

Polyurethane foams as solid chromogenic reagents for diffuse reflectance spectroscopy

The chromatographic behavior of group (IIB) metal ions on polyurethane foam functionalized with 8-hydroxyquinoline

Solid-Phase Spectrophotometric Analysis of 1-Naphthol Using Silica Functionalized with m-Diazophenylarsonic Acid

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