Determination of aromatic amines in water samples by capillary electrophoresis with electrochemical and fluorescence detection

Asthana, Amit; Bose, Devasish; Durgbanshi, Abhi̧lasha; Sanghi, Sunil Kumar; Kok, Wim Th.

doi:10.1016/s0021-9673(00)00522-7

Cited by 88 publications

(58 citation statements)

References 17 publications

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“…MEKC optimization was carried out using phosphate (10 mM NaH2PO4 (pH 7.0)) and borate (5 mM sodium tetraborate and 4.5 mM boric acid (pH 9.0)) buffer containing 10 mM SDS. 36 The optimized MEKC conditions were evaluated from resolution (Rs), sensitivity (signal-to-noise, S/N) and relative standard deviation (%RSD). Method validation.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, MEKC was selected as an alternative to monitor the fluorescent products, using phosphate (10 mM NaH2PO4 (pH 7.0)) and borate (5 mM sodium tetraborate and 4.5 mM boric acid (pH 9.0)) buffer containing 10 mM SDS as the BGE. 36 Results show that S/N of nicotine (NFP) and cotinine fluorescent products (CFP) were 42 and 12 in borate buffer and 10 and 3 in phosphate buffer, respectively. Therefore, borate a.…”

Section: Monitoring Of Fluorescent Product Formation By Ce-c 4 D and Fdmentioning

confidence: 98%

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Potential of Capillary Electrophoresis (CE) and Chip-CE with Dual Detection (Capacitively-Coupled Contactless Conductivity Detection (C4D) and Fluorescence Detection) for Monitoring of Nicotine and Cotinine Derivatization

et al. 2013

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Section: Methodsmentioning

confidence: 99%

Section: Monitoring Of Fluorescent Product Formation By Ce-c 4 D and Fdmentioning

confidence: 98%

Potential of Capillary Electrophoresis (CE) and Chip-CE with Dual Detection (Capacitively-Coupled Contactless Conductivity Detection (C4D) and Fluorescence Detection) for Monitoring of Nicotine and Cotinine Derivatization

et al. 2013

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“…Adsorption equilibrium isotherm was obtained by mixing 0.5 g of b-CD copolymer with 25 mL of aromatic amine compound solutions with initial concentration from 5 to 100 mg/L. The mixture was shaken at a rate of 220 rpm at 25 C. The experimental value of equilibrium adsorbed quantity (Q e ) of aromatic amine compounds on b-CD copolymer obtained from experimental data was calculated by eq. (1).…”

Section: Inclusion Adsorptionmentioning

confidence: 99%

“…Aromatic amine compounds can easily permeate through soil and contaminate ground water, so it is desired to remove them from waste water before release. 25 The diameter of b-CD internal cavity is about 0.60-0.65 nm, 26 in which the guest molecule with smaller diameter could be imbedded via noncovalent bonds. 1 In this article, we present the synthesis of a cyclodextrin derivative monomer and further radical copolymerization with styrene (STY) and methyl methacrylate (MMA).…”

Section: Introductionmentioning

confidence: 99%

Preparation of bimodal porous copolymer containing β‐cyclodextrin and its inclusion adsorption behavior

Sun

Shen

Cao

et al. 2010

J of Applied Polymer Sci

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A novel insoluble bimodal porous polymer containing b-cyclodextrin (b-CD) was prepared to adsorb aromatic amine compound. The process involved copolymerization of styrene and methyl methacrylate with a maleic acid derivative of b-CD, subsequently, above formed copolymer was foamed by supercritical CO 2 . The chemical properties and physical structure of obtained copolymer was analyzed using Fourier transform infrared spectra, Thermal gravimetric analysis, X-ray diffraction, scanning electron microscope, and N 2 adsorption techniques. The inclusion adsorption of aromatic amine compounds on b-CD copolymer was carried out in a batch system. The quantities of aromatic amine compounds adsorbed on b-CD copolymer reached equilibrium within 60 min. The adsorption kinetic could be fitted to a pseudo-secondorder kinetic equation, and the linear correlation coefficients varied from 0.9828 to 0.9935. With the influence of molecular structure and hydrophobicity of the aromatic amine compound, the sequence of quantity of aromatic amine compounds adsorbed on b-CD copolymer is p-toluidine > aniline > benzidine > o-toluidine. The adsorption equilibrium data of aromatic amine compound adsorbed on b-CD copolymer were fitted to Freundlich and Langmuir models, respectively. The linear correlation coefficients of Langmuir model varied from 0.9516 to 0.9940, and the linear correlation coefficients of Freundlich varied from 0.9752 to 0.9976. It is concluded that Freundlich model fits better than Langmuir model, because the adsorption of aromatic amine compound on b-CD copolymer is a chemical process.

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“…Paládio metáli-co também tem se mostrado eficiente no desacoplamento, como têm demonstrado Kok e colaboradores [72][73][74][75][76][77] . A corrosão do capilar de sílica com HF foi proposta na construção de um desacoplador diretamente sobre o capilar de separação 78,79 .…”

Section: Desacoplamentounclassified

Detecção eletroquímica em eletroforese capilar

Silva¹

2003

Quím. Nova

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Recebido em 12/11/01; aceito em 11/6/02 ELECTROCHEMICAL DETECTION IN CAPILLARY ELECTROPHORESIS. This review focuses the development of electrochemical detection systems coupled to capillary electrophoresis. Conductometric, amperometric, voltametric, and potentiometric modes of detection are reviewed. The positioning of the electrodes, interferences of high electric field, and the materials employed in the fabrication and modification of the electrodes are discussed. The advantages of the use of electrochemical detection with capillary electrophoresis, regarding to the sensitivity and selectivity, is exemplified with a large number of applications. Also, the use of electrochemical detection systems in microchip technology is addressed.

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Determination of aromatic amines in water samples by capillary electrophoresis with electrochemical and fluorescence detection

Cited by 88 publications

References 17 publications

Potential of Capillary Electrophoresis (CE) and Chip-CE with Dual Detection (Capacitively-Coupled Contactless Conductivity Detection (C4D) and Fluorescence Detection) for Monitoring of Nicotine and Cotinine Derivatization

Potential of Capillary Electrophoresis (CE) and Chip-CE with Dual Detection (Capacitively-Coupled Contactless Conductivity Detection (C4D) and Fluorescence Detection) for Monitoring of Nicotine and Cotinine Derivatization

Preparation of bimodal porous copolymer containing β‐cyclodextrin and its inclusion adsorption behavior

Detecção eletroquímica em eletroforese capilar

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