On-line sample concentration and determination of cationic alkaloids in human plasma by micelle to solvent stacking in capillary zone electrophoresis

Zhang, Shuaihua; Ma, Ruiyang; Yang, Xiu‐Wei; Wang, Chun

doi:10.1016/j.jchromb.2012.08.017

Cited by 28 publications

(11 citation statements)

References 43 publications

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“…Zhang et al. published a sensitive method for the determination of three cationic alkaloids from human plasma samples by MSS‐CZE with UV detection at 226 nm. The BGS was 50 mM NH 4 HCO 3 at pH 7.5 in 40% methanol.…”

Section: Micellar Methodsmentioning

confidence: 99%

Contemporary sample stacking in analytical electrophoresis

et al. 2014

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This contribution is a methodological review of the publications about the topic from the last 2 years. Therefore, it is primarily organized according to the methods and procedures used in surveyed papers and the origin and type of sample and specification of analytes form the secondary structure. The introductory part about navigation in the architecture of stacking brings a brief characterization of the various stacking methods, with the description of mutual links to each other and important differences among them. The main body of the article brings a survey of publications organized according to main principles of stacking and then according to the origin and type of the sample. Provided that the paper cited gave explicitly the relevant data, information about the BGE(s) used, procedure, detector employed, and reached LOD and/or concentration effect is given. The papers where the procedure used is a combination of diverse fragments and parts of various stacking techniques are mentioned in a special section on combined techniques. The concluding remarks in the final part of the review evaluate present state of art and the trends of sample stacking in CE.

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Section: Micellar Methodsmentioning

confidence: 99%

Contemporary sample stacking in analytical electrophoresis

et al. 2014

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“…This phenomenon is due to the presence of organic solvent (a plug or with the sample solution) for MSS or a zone in the capillary that decreases the CMC of the micelles for AFMC. Six papers were found to apply MSS as a stacking mechanism, five of which used SDS as a pseudostationary phase for the analysis of cationic analytes and one used CTAB for anionic analytes . One paper was found to use AFMC as stacking mechanism .…”

Section: Stackingmentioning

confidence: 99%

Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2012–2014)

et al. 2015

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One of the most cited limitations of capillary (and microchip) electrophoresis is the poor sensitivity. This review continues to update this series of biannual reviews, first published in Electrophoresis in 2007, on developments in the field of on-line/in-line concentration methods, covering the period July 2012-July 2014. It includes developments in the field of stacking, covering all methods from field-amplified sample stacking and large-volume sample stacking, through to ITP, dynamic pH junction, and sweeping. Attention is also given to on-line or in-line extraction methods that have been used for electrophoresis.

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“…Because the organic solvent in the background electrolyte (BGE) affects the micellar interaction with the analytes, the effective electrophoretic directions of the analytes will reverse at the micellar to solvent stacking boundary (MSSB), therefore causing the analytes focusing [5] [6]. It was first introduced by Quirino and co-workers for the stacking of small organic cations [7] and has already been widely used to analyze organic cations and anions in waste water [8], traditional Chinese medicine [9] and biological fluids [10] [11] [12] analysis. Although sensitivity enhancements of 40 -1000-fold and detection limits of 0.1 -0.001 mg/L have been achieved with MSS, its selectivity and sensitivity still can't meet the requirements of real sample analysis.…”

Section: Introductionmentioning

confidence: 99%

Application of Capillary Electrophoretic On-Line Sequential Concentration Based on Micelle to Solvent Stacking

Sun¹,

Lu²,

Yuan³

et al. 2018

AJAC

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To take advantage of micelle to solvent stacking (MSS) to achieve more sensitivity enhancement with enough selectivity, the application of capillary electrophoretic on-line sequential concentration based on the MSS was reviewed. MSS has been coupled to sweeping FASS, FASI and normal EKI. Furthermore, multiple stacking by coupling MSS with more than one stacking method has also been reported. It is more sensitive and selective than solely used of one or two stacking methods and is very suitable for complex and trace sample analysis.

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On-line sample concentration and determination of cationic alkaloids in human plasma by micelle to solvent stacking in capillary zone electrophoresis

Cited by 28 publications

References 43 publications

Contemporary sample stacking in analytical electrophoresis

Contemporary sample stacking in analytical electrophoresis

Recent advances in enhancing the sensitivity of electrophoresis and electrochromatography in capillaries and microchips (2012–2014)

Application of Capillary Electrophoretic On-Line Sequential Concentration Based on Micelle to Solvent Stacking

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