Systems of capillary electrophoresis in electrochemiluminescence analysis

Muzyka, E. N.; Rozhitskii, N. N.

doi:10.1134/s106193481006002x

Cited by 11 publications

(3 citation statements)

References 173 publications

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“…The plot shows an upsurge trend indicative of the increased interest and activity. Sixty eight percent (68%) of these publications came out in 2006–2010, the coverage of this review, with the following topics: pharmaceutical and herbal products applications 16–49, food and food contaminants 50–88, detection 89–103, toxicological compounds 104–111, microchips 67, 88, 112, and preconcentration 113–120. There were reviews on the general advances and new aspects of CE‐natural products analysis 15, 121, 122.…”

Section: Previous Reviewsmentioning

confidence: 99%

Capillary electrophoresis of natural products: Highlights of the last five years (2006–2010)

2011

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An extensive search of the published research and review articles indicated a growing number of works that employed electroseparation techniques. Capillary zone electrophoresis (CZE) and electrokinetic chromatography (EKC), in particular, were found to be popular for the analyses of natural products. This review outlines the important developments in this field over the years, especially during the 2006-2010 period. An overview of the natural product applications such as pharmaceuticals/herbal products, fingerprinting and quality control, food and food contaminants, and toxicological compounds of interest to forensics were presented. Important areas of detection strategies, microchips, sample preconcentration, and chiral separations were also discussed. Hence, quick information was provided on the researches already undertaken and the possibilities of unexplored areas. In addition, fundamental concepts for the understanding of CZE and EKC and their suitability for natural products analyses were briefly discussed.

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Section: Previous Reviewsmentioning

confidence: 99%

Capillary electrophoresis of natural products: Highlights of the last five years (2006–2010)

2011

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“…It has been applied to separation and analysis in clinical diagnosis . A combination of CE with ECL (CE–ECL) has the potential for automation and integration, and reduced cost for the rapid analysis of complex samples .…”

Section: Introductionmentioning

confidence: 99%

Determination of 5‐hydroxytryptamine in serum by electrochemiluminescence detection with the aid of capillary electrophoresis

et al. 2011

Luminescence

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A rapid, sensitive and simple electrochemiluminescence method for the determination of 5-hydroxytryptamine (5-HT) using capillary electrophoresis was proposed. The experimental parameters, including the detection potential, the concentration of Ru(bpy)(3)(2+), the concentration and pH of phosphate buffer for separation and detection, the injection voltage and time and the separation voltage on the determination of 5-HT, were optimized. Under the optimized conditions, the linear concentration range for 5-HT was 3.5 × 10(-9) -5.1 × 10(-3) mol/L, with a detection limit of 5 × 10(-10) mol/L. The relative standard deviations (RSDs) of the ECL intensity and the migration times for six continuous injections of 1.0 µmol/L 5-HT were 2.48% and 1.3%, respectively. The method was successfully applied to 5-HT assay in samples of human serum in 5 min and the extraction recoveries with spiked serum samples were over 94.4%.

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“…The contrast achievable in luminol ECL imaging is limited by background light emission from a chemiluminescent (CL) reaction occurring between luminol and H 2 O 2 in bulk electrolyte. 42,43 This homogeneous CL process is catalyzed by transition metal ions in solution and has previously been exploited as a means of detecting trace quantities of transition metals. 44,45 Here we show that the background CL process can be effectively suppressed by addition of ethylenediaminetetracetic acid (EDTA) to the experimental electrolyte.…”

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confidence: 99%

The Study of AA2024 De-Alloying Using Luminol Electrogenerated Chemiluminescence Imaging

Wint

Barrett

Williams

et al. 2019

J. Electrochem. Soc.

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This paper describes the use of luminol electrogenerated chemiluminescence (ECL) to image the redistribution of electrochemically active copper (copper in electrical contact with the substrate) at the surface of AA2024-T351 corroding in NaCl electrolyte. AA2024 samples are thermo-mechanically treated to produce a macroscopically inhomogeneous distribution of intermetallic particles. The AA2024-T351 samples are allowed to corrode by immersion in 0.51 M aqueous NaCl and (ex-situ) ECL measurements are performed to follow copper redistribution. Luminol ECL light emission is orders of magnitude more intense on copper than aluminum and macro and microscopic images are obtained to elucidate the redistribution of electrochemically active copper. S phase de-alloying produces a radical redistribution of copper on a microstructural scale (1-10 μm) but macroscopic copper distributions (1-10 mm) remain largely unchanged. In-situ experiments using the SVET show that macroscopic copper distribution directs localization of corrosive attack such that net anodic activity (pitting/intergranular attack) is concentrated in regions with lowest surface coverage of copper and net cathodic activity is concentrated in regions of highest coverage. Results are explained in terms of the role of solution chemistry and pH in influencing the transition from transient to stable pitting.

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Systems of capillary electrophoresis in electrochemiluminescence analysis

Cited by 11 publications

References 173 publications

Capillary electrophoresis of natural products: Highlights of the last five years (2006–2010)

Capillary electrophoresis of natural products: Highlights of the last five years (2006–2010)

Determination of 5‐hydroxytryptamine in serum by electrochemiluminescence detection with the aid of capillary electrophoresis

The Study of AA2024 De-Alloying Using Luminol Electrogenerated Chemiluminescence Imaging

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