Voltammetric determination of 4-nitrophenol at a sodium montmorillonite-anthraquinone chemically modified glassy carbon electrode

Hu, Shengshui; Xu, Chen; Wang, Gaiping; Cui, Dafu

doi:10.1016/s0039-9140(00)00658-5

Cited by 152 publications

(80 citation statements)

References 18 publications

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“…3,4 Levels of 4-NP are usually quantified using chromatographic techniques, such as gas chromatography, 5 high performance liquid chromatography, 6 liquid chromatography associated with mass spectroscopy 7 and capillary electrophoresis. 8 On the other hand, electroanalytical methods have been proposed for 4-NP determination at the hanging mercury drop electrode, 9,10 at modified glassy carbon electrodes [11][12][13] and at a boron-doped diamond (BDD) microelectrode. 14 Organic molecules, such as pesticides and their degradation products, have usually strong interactions with the surface of solid electrodes (adsorption process) thus hindering their use in analytical determinations.…”

Section: Introductionmentioning

confidence: 99%

Sonovoltammetric determination of 4-nitrophenol on diamond electrodes

Garbellini¹,

Salazar‐Banda²,

Avaca³

2007

J. Braz. Chem. Soc.

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A determinação sonovoltamétrica do 4-nitrofenol foi estudada sobre um eletrodo de diamante dopado com boro. Foram observadas melhorias significativas na sensibilidade analítica devido à limpeza da superfície eletródica e ao aumento no transporte de espécies ao eletrodo proporcionados pelo ultra-som. Desta maneira, para os processos de oxidação e redução, os limites de detecção diminuíram de 11.7 para 3.87 e de 6.38 para 2.57 µg L -1 , respectivamente.The sonovoltammetric determination of 4-nitrophenol was studied on a boron-doped diamond electrode. Significant improvements in the analytical sensibility were observed due to electrode surface cleaning and the enhancement in the transport of species to the electrode surface provided by ultrasound. Thus, for the oxidation and reduction process, the limit of detection diminished from 11.7 to 3.87 and from 6.38 to 2.57 µg L -1 , respectively.

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Section: Introductionmentioning

confidence: 99%

Sonovoltammetric determination of 4-nitrophenol on diamond electrodes

Garbellini¹,

Salazar‐Banda²,

Avaca³

2007

J. Braz. Chem. Soc.

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“…The recent use of anthraquinone derivatives includes the following: formation of conductive, electroactive films and monolayers [1 ± 4], making electroactive tags [5], employing their luminescence-, photo, and colorimetric properties [6 ± 8], inserting them as a key constituent to the compounds used for the modification of electrodes [9], and constructing oligomers of electrochemically-switched enhanced ion binding ability [10,11].…”

Section: Introductionmentioning

confidence: 99%

Supramolecular Derivatives of 9,10‐Anthraquinone. Electrochemistry at Regular‐ and Low Ionic Strength and Complexing Properties

et al. 2003

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Three newly synthesized polyanthraquinone derivatives: 7,13-bis(9,10-dioxo-1-anthryl)-1,4,10-trioxa-7,13-diazacyclopentadecane, (AQ)A 2 15C5, 7,16-bis(9,10-dioxo-1-anthryl)-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane, (AQ)A 2 18C6, and tris[(9,10-diokso-1-antryl)-aminoethyl]amine, (AQNet) 3 N, were examined by cyclic and normal pulse voltammetry. All anthraquinone groups in these compounds were electroactive and formed the radicals and dianions similarly to simple anthraquinone. The differences between the voltammograms obtained in the absence and presence of supporting electrolyte are discussed, and the diffusion coefficients of the compounds and the rates of the chemical reactions following the first reduction step were evaluated. (AQNet) 3 N appears to be a good model compound for multi electron transfers in aprotic solvents. It offers two consecutive nearly reversible 3-electron redox systems: 0/À 3 and À 3/À 6. The interactions of the radicals and dianions of the above compounds with alkali metal cations were examined.

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“…Meanwhile, 4-NP is one of the highly hazardous and toxic phenols which are used in the production of various analgesics, pesticides, dyes and processing of leather [2]. Besides their toxicities to humans, animals, and plants, and they give an undesirable taste and odor to drinking water, even in very low concentration [7][8][9]. Decontamination of wastewaters from these pollutants is very difficult since they are usually resistant to microbial degradation [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Besides their toxicities to humans, animals, and plants, and they give an undesirable taste and odor to drinking water, even in very low concentration [7][8][9]. Decontamination of wastewaters from these pollutants is very difficult since they are usually resistant to microbial degradation [9,10]. Therefore, accurate, rapid and selective detection of nitroaromatics is very crucial in many areas, such as environmental science, public security, and forensics.…”

Section: Introductionmentioning

confidence: 99%

NITROAROMATIC COMPOUND SENSING APPLICATION OF HEXA-ARMED DANSYL END-CAPPED POLY(epsilon-CAPROLACTONE) STAR POLYMER WITH PHOSPHAZENE CORE

Doğancı¹,

Bayır²,

Doğancı³

et al. 2016

J. Turk. Chem. Soc., Sect. A: Chem.

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Hexa-armed dansyl end-capped poly(ε-caprolactone) star polymer with phosphazene core (N3P3-(PCL-Dansyl)6) was prepared in a two-step synthetic procedure including ring opening polymerization (ROP) of ε-caprolactone (ε-CL) and esterification reactions. The obtained fluorescence-active polymer was employed as a fluorescent probe towards certain nitroaromatic compounds (2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene, 2,6-dinitrotoluene, 2-nitrotoluene, 3-nitrotoluene, 2,4,6-trinitrophenol (picric acid), 2,4-dinitrophenol, 4-nitrophenol, and 1,2-dinitrobenzene). Fluorescence intensity of N3P3-(PCL-Dansyl)6 was decreased gradually upon the addition of nitroaromatic compounds and the highest quenching efficiency was found to be 100% with TNT. Besides, N3P3-(PCL-Dansyl)6 gave exceptionally selective response toward nitroaromatic compounds, even in the presence of toxic metal cations such as Pb

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Voltammetric determination of 4-nitrophenol at a sodium montmorillonite-anthraquinone chemically modified glassy carbon electrode

Cited by 152 publications

References 18 publications

Sonovoltammetric determination of 4-nitrophenol on diamond electrodes

Sonovoltammetric determination of 4-nitrophenol on diamond electrodes

Supramolecular Derivatives of 9,10‐Anthraquinone. Electrochemistry at Regular‐ and Low Ionic Strength and Complexing Properties

NITROAROMATIC COMPOUND SENSING APPLICATION OF HEXA-ARMED DANSYL END-CAPPED POLY(epsilon-CAPROLACTONE) STAR POLYMER WITH PHOSPHAZENE CORE

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