Recent advances in capillary electrophoresis and capillary electrochromatography of pollutants

Da̧bek-Złotorzyńska, Ewa; Chen, Heidi; Ding, Luyi

doi:10.1002/elps.200305658

Cited by 25 publications

(13 citation statements)

References 172 publications

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“…Along with advances in instrumentation and separation methodologies, a wide range of applications has been developed in many areas, including chemical, biotechnical, pharmaceutical, and environmental analysis [1,2]. In most CE applications it is necessary to control electroosmotic flow (EOF) to achieve optimal separation.…”

Section: Introductionmentioning

confidence: 99%

Electroosmotic flow suppression in capillary electrophoresis: Chemisorption of trimethoxy silane-modified polydimethylacrylamide

et al. 2005

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Adsorbed polymers are widely used to suppress electroosmotic flow (EOF) in capillary electrophoresis (CE). Polymeric coatings, physisorbed onto the surface of the capillary wall, are often unstable under harsh conditions. This can be attributed to the reversible nature of the coating which becomes apparent when the adsorbed layer competes with a second species in the electrophoresis buffer solution for attachment/interaction with the capillary surface. In an effort to overcome the problem of coating instability, trimethoxysilane-modified polydimethylacrylamide was synthesized. This copolymer rapidly adsorbs on the wall from ultradilute aqueous solutions. After incubation at a temperature of 60 degrees C silyl groups, which extend from the polymer backbone, form condensation bonds with the silanols on the capillary surface. This enables subsequent formation of strong covalent bonds between the copolymer and the capillary wall. In this research, we establish that physisorption of polymer chains to the surface is essential for close alignment of surface and polymer silane groups which facilitates the formation of covalent bonds.

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Section: Introductionmentioning

confidence: 99%

Electroosmotic flow suppression in capillary electrophoresis: Chemisorption of trimethoxy silane-modified polydimethylacrylamide

et al. 2005

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“…Likewise, complete surveys related to the application of CE to the analysis of one specific type of matrices has been published by Timerbaev and Fukushi for seawater [49] and by Frazier and Papadopoulou for foods and food stuffs [51]. A number of overviews of practical applications of CE to particular groups of analytes, such as platinum group metals [9], lanthanides [52] or inorganic environmental pollutants [50], were also written.…”

Section: Reviewsmentioning

confidence: 99%

Capillary electrophoresis of inorganic ions: An update

Timerbaev

2004

Electrophoresis

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This review as a sequel of three earlier similar reports gives a summary of the progress and significant methodological developments, starting from 2002, in the use of capillary electrophoresis (CE) for inorganic ion analysis. As substantiated by the illustrative number of relevant references, improvements in sensitivity achieved both in and outside a CE system, advances in manipulating the separation selectivity, novel hardware configurations, and system performance innovations are continually being reported over the review period. Specifically viewed are the recent advancements in elemental (bio)speciation analysis, which remains one of the most fertile areas of CE research, as well as in three recently booming research topics: contactless conductivity detection, separations on microchips, and transient isotachophoretic preconcentration. A state-of-the-art picture of technique's potentialities within the field of interest presented here demonstrates that CE has become recognized and is growing in acceptance as a reliable alternative to traditional analytical methods such as high-performance liquid chromatography (HPLC).

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“…It is intresting to note that among few sorts of sample preparation SPE has achieved a good reputation in analytical science due to its ease of operation, selective, time and costly chemical saving nature [8]. Some reviews have been published on the pre-treatment and sample preparation methodologies for the achiral analysis of pollutants [9][10][11][12][13]. Dabek-Zlotorzynska et al [10] reviewed the sample pretreatment methodologies for environmental analysis prior to CE.…”

Section: Sample Treatmentmentioning

confidence: 99%

“…Some reviews have been published on the pre-treatment and sample preparation methodologies for the achiral analysis of pollutants [9][10][11][12][13]. Dabek-Zlotorzynska et al [10] reviewed the sample pretreatment methodologies for environmental analysis prior to CE. Whang and Pawliszyn [14] developed an interface, which enables the solid-phase micro-extraction (SPME) fiber hyphenation to CE.…”

Section: Sample Treatmentmentioning

confidence: 99%

Chiral Analyses of Pollutants by Capillary Electrophoresis

Ali¹

2010

TOCBMJ

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Abstract:The determination of enantiomeric composition of chiral xenobiotics and pollutants is a very difficult job due to their low amounts and poor detection by commonly used UV detector. But this sort of analysis is an important issue from the health point of view. The chiral analyses of these notorious pollutants by capillary electrophoresis have been discussed in this article. This review discusses the new trends and advancements, which have been achieved in the analyses of chiral pollutants using capillary electrophoresis and the state-of-art of their enaniomeric resolution. This article focuses on sample treatment, applications, optimization, detection, mechanisms of chiral resolution and future perspectives of CE in chiral resolution of xenobiotics. Besides, efforts have also been made to suggest the improvement in CE machine to make it ideal for the analyses of chiral xenobiotics at trace levels.

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Recent advances in capillary electrophoresis and capillary electrochromatography of pollutants

Cited by 25 publications

References 172 publications

Electroosmotic flow suppression in capillary electrophoresis: Chemisorption of trimethoxy silane-modified polydimethylacrylamide

Electroosmotic flow suppression in capillary electrophoresis: Chemisorption of trimethoxy silane-modified polydimethylacrylamide

Capillary electrophoresis of inorganic ions: An update

Chiral Analyses of Pollutants by Capillary Electrophoresis

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