In-line coupling capillary electrochromatography with amperometric detection for analysis of explosive compounds

Hilmi, Abdelkader; Luong, John H. T.

doi:10.1002/(sici)1522-2683(20000401)21:7<1395::aid-elps1395>3.0.co;2-c

Cited by 53 publications

(12 citation statements)

References 24 publications

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“…Compared with HPLC, pCEC-AD possesses the predominance of very low sample and organic solvent consumption, better resolution, potentially higher peak capacities, and shorter analysis time. In 2000, Hilmi and Luong [17] reported a home-made pure CEC with electrochemical detection system, which was typically operated in the amperometric mode. Subsequently a simple homemade system based on the end-column amperometric detector coupled with unique pCEC was developed and applied for the separation and determination of three estrogens in our group [18].…”

Section: Introductionmentioning

confidence: 99%

Development of a new method for analysis of Sudan dyes by pressurized CEC with amperometric detection

Liu¹,

Zhang²,

Lin³

et al. 2007

Electrophoresis

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A new analytical method, pressurized CEC (pCEC) with amperometric detection (AD) using 1.5 mm RP nonporous silica packed columns has been developed for the rapid separation and determination of four Sudan dyes in hot chilli. The influence of several experimental parameters on the retention behavior has been investigated. The electrochemical oxidation of Sudans I-IV separated by pCEC can be reliably monitored with a carbon electrode at 10.95 V (vs. Ag/AgCl). Fast and efficient separation of the analytes was achieved within 7 min by pCEC under the optimum conditions with an ACN/water (95:5%) mobile phase containing formic acid (pH 4.3), 5% acetone and 0.002% triethylamine using a separation voltage of 12 kV. The detection limits for four Sudan dyes ranged from 8.0 6 10 27 to 1.2 6 10 26 mol/L. To evaluate the feasibility and reliability of this method, the proposed pCEC-AD method was further demonstrated with hot chilli samples spiked with Sudan dyes.

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Section: Introductionmentioning

confidence: 99%

Development of a new method for analysis of Sudan dyes by pressurized CEC with amperometric detection

Liu¹,

Zhang²,

Lin³

et al. 2007

Electrophoresis

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“…Uma ampla variedade de materiais (e dimensões) tem sido empregada na fabricação dos microeletrodos. Há na literatura a descrição de eletrodos confeccionados com fibra 40 66,144,145,147,148,182,188,[190][191][192]194,195 . Eletrodos modificados oferecem diferentes possibilidades de detecção, como, por exemplo, a diminuição dos potenciais de oxidação ou redução de diversas espécies.…”

Section: Detecção Amperométrica (Ad)unclassified

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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“…Both groups utilized methanol, SDS and 2-(N-morpholino)ethanesulfonic acid in their buffers. UV [48] and amperometric [49] detection were performed.…”

Section: Explosives Residue Gunshot Residue Ink and Dye Analysismentioning

confidence: 99%

Advances of capillary electrophoresis in clinical and forensic analysis (1999-2000)

et al. 2001

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In this paper, capillary electrophoresis in clinical and forensic analysis is reviewed on the basis of the literature of 1999, 2000 and the first papers in 2001. An overview of progress relevant examples for each major field of application, namely (i) analysis of drug seizures, explosives residues, gunshot residues and inks, (ii) monitoring of drugs, endogenous small molecules and ions in biofluids and tissues, (iii) general screening for serum proteins and analysis of specific proteins (carbohydrate deficient transferrin, alpha1-antitrypsin, lipoproteins and hemoglobins) in biological fluids, and (iv) analysis of nucleic acids and oligonucleotides in biological samples, including oligonucleotide therapeutics, are presented.

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In-line coupling capillary electrochromatography with amperometric detection for analysis of explosive compounds

Cited by 53 publications

References 24 publications

Development of a new method for analysis of Sudan dyes by pressurized CEC with amperometric detection

Development of a new method for analysis of Sudan dyes by pressurized CEC with amperometric detection

Detecção eletroquímica em eletroforese capilar

Advances of capillary electrophoresis in clinical and forensic analysis (1999-2000)

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