Dual photometric-contactless conductometric detector for capillary electrophoresis

Chvojka, Tommy; Jelı́nek, Ivan; Opekar, František; Štulı́k, Karel

doi:10.1016/s0003-2670(00)01191-0

Cited by 75 publications

(79 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the further development of the CCD cell design, the electrodes have been based on soldered coils of copper wire [25,26] or on strips of aluminium foil [27,28]. The basic cell configuration in all these designs is, however, almost identical and is illustrated in Figure 1A.…”

Section: Basic Principles Of Contactless Conductivity Detectionmentioning

confidence: 99%

“…Chvojka et al [26] designed a dual photometric-contactless conductivity detector for simultaneous absorbance and conductivity measurements of both inorganic and organic ions. Tù ma et al [27] demonstrated that semitubular electrodes can be utilized for the construction of a CCD cell, which can be opened up for easy exchange of the capillary.…”

Section: Instrumental Developmentsmentioning

confidence: 99%

See 1 more Smart Citation

Contactless Conductivity Detection in Capillary Electrophoresis: A Review

2004

View full text Add to dashboard Cite

The popularity of contactless conductivity detection in capillary electrophoresis has been growing steadily over the last few years. Improvements have been made in the design of the detector in order to facilitate its handling, to allow easy incorporation into available instruments or to achieve higher sensitivity. The understanding of its fundamental working principles has been advanced and the detection approach has also been transferred to lab-on-chip devices. The range of applications has been extended greatly from the initial work on small inorganic ions to include organic species and biomolecules. Concurrent determination of cations and anions by dual injection from opposite ends has been demonstrated as well as sample introduction by using flow-injection systems for easy automation of the process.

show abstract

Section: Basic Principles Of Contactless Conductivity Detectionmentioning

confidence: 99%

Section: Instrumental Developmentsmentioning

confidence: 99%

Contactless Conductivity Detection in Capillary Electrophoresis: A Review

2004

View full text Add to dashboard Cite

show abstract

“…The contactless conductivity detector has been used for CE detection of anions with a-CD to promote separation [183], and in the characterization of purity of alkyl-and arylamino derivatives of b-cyclodextrin [184]. A combined system with simultaneous contactless conductivity and photometric detectors has been also reported recently [185]. Fig.…”

Section: Conductivity Detection In Cementioning

confidence: 99%

Electroanalytical Flow Measurements–Recent Advances

2003

View full text Add to dashboard Cite

As general trends in current development of chemical analysis, including electroanalysis, one can indicate a search for methods fast and multianalyte, for miniaturized measuring devices, mechanization and automation of analytical processes. In all these trends a significant role is played by measurements in flow conditions. The major advantage of flow electroanalysis is a possibility of utilizing a kinetic discrimination in potentiometric measurements and enhancement of mass transport in voltammetric techniques. Flow injection techniques provide shortening of time of a single analytical determination due to reproducible use of transient signal from the detector without need of obtaining a steady-state equilibrium signal. Electrochemical detection in HPLC gives often improved selectivity and detection limit for electroactive solutes, whereas in capillary electrophoresis it allows a convenient design of portable, integrated chips for field application. This review presents state-of-the -art of flow electroanalysis based on 226 cited literature references

show abstract

“…For example, UV has been combined with conductivity detection, 3,4 with amperometric detection 5 and with mass spectrometry 6,7 for CE. Recently, Jelınek et al 8,9 designed a dual photometric-contactless conductometric detector for CE where two detections were simultaneously carried out at the same place in the separation capillary. FD is a highly sensitive and selective, and is frequently used in CE for analysis of the biochemical samples.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Light Emitting Diode-Induced Fluorescence and Contactless Conductivity Detection for Capillary Electrophoresis

2005

View full text Add to dashboard Cite

A combined detection system of simultaneous contactless conductometric and fluorescent detection for capillary electrophoresis (CE) has been designed and evaluated. The two processes share a common detection cell. A blue lightemitting diode (LED) was used as the excitation source and an optical fiber was used to collect the emitting fluorescence for fluorescent detection (FD). Inorganic ions, fluorescein isothiocyanate (FITC)-labeled amino acids and small molecule peptides were separated and detected by the combined detector, and the detection limits (LODs) of sub-µM level were achieved.

show abstract

Dual photometric-contactless conductometric detector for capillary electrophoresis

Cited by 75 publications

References 16 publications

Contactless Conductivity Detection in Capillary Electrophoresis: A Review

Contactless Conductivity Detection in Capillary Electrophoresis: A Review

Electroanalytical Flow Measurements–Recent Advances

Simultaneous Light Emitting Diode-Induced Fluorescence and Contactless Conductivity Detection for Capillary Electrophoresis

Contact Info

Product

Resources

About