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She beside fell her download to resonance and request. Application of capillary isoelectric focusing with absorption imaging detection to the analysis of proteins. Headspace solid-phase microextraction versus purge and trap for the determination of substituted benzene compounds in water.
Journal of Chromatographic Science , 32 8 , Analytical Chemistry , 66 8 , Buchholz, Karen D. Optimization of solid-phase microextraction conditions for determination of phenols. Analytical Chemistry , 66 1 , Potter, David W. Environmental Science and Technology , 28 2 , Analytical Chemistry , 66 6 , Year Arthur, Catherine L. Practical and theoretical aspects of solid phase microextraction for the direct analysis of groundwater. Review Pawliszyn, Janusz; Wu, Jiaqi. Ampholyte-free isoelectric focusing of proteins in cone shaped capillaries.
Journal of Microcolumn Separations , 5 5 , Diode laser-based concentration gradient detector for capillary isotachophoresis. Journal of Microcolumn Separations , 5 3 , Analysis for organic compounds in environmental samples by headspace solid phase microextraction. Journal of High Resolution Chromatography , 16 12 , Otu, Emmanuel O. Solid phase micro-extraction of metal ions. Mikrochimica Acta , , Motlagh, Safa; Pawliszyn, Janusz.
Online monitoring of flowing samples using solid phase microextraction-gas chromatography.
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Applications of Chiral Supercritical Fluid Chromatography
Journal of Microcolumn Separations , 5 1 , Chai, Meng; Arthur, Catherine L. Determination of volatile chlorinated hydrocarbons in air and water with solid-phase microextraction. Journal of Liquid Chromatography , 16 17 , In vitro observation of interactions of iron and transferrin by capillary isoelectric focusing with a concentration gradient imaging detection system. Journal of Chromatography , 1 , Determination of phenols by solid-phase microextraction and gas chromatographic analysis.
Environmental Science and Technology , 27 13 , Extraction of semivolatile organic compounds from aqueous samples using high-density carbon dioxide and hollow fiber membrane module. Analytical Chemistry , 65 18 , Fast analysis of proteins by isoelectric focusing performed in capillary array detected with concentration gradient imaging system. Electrophoresis , 14 , Capillary isoelectric focusing with imaging detection.
Journal of Liquid Chromatography , 16 , Headspace solid-phase microextraction. Analytical Chemistry , 65 14 , Theoretical and practical aspects of solid phase microextraction with thermal desorption using coated fused silica fibers. Multiplex gas chromatography with a hollow fiber membrane interface for determination of trace volatile organic compounds in aqueous samples. Analytical Chemistry , 65 13 , Diode laser-based concentration gradient detector for detection of capillary isoelectric focusing. Applied Spectroscopy , 46 12 , Kinetic model of supercritical fluid extraction.
Journal of Chromatographic Science , 31 1 , Effects of temperature and pressure on supercritical fluid extraction efficiencies of polycyclic aromatic hydrocarbons and polychlorinated biphenyls.
Analytical Chemistry , 65 4 , Environmental analysis of organic compounds in water using solid phase micro extraction. Journal of High Resolution Chromatography , 15 11 , Analysis of substituted benzene compounds in groundwater using solid-phase microextraction. Environmental Science and Technology , 26 5 , Journal of Chromatography , 2 , Application of capillary isoelectric focusing with universal concentration gradient detector to the analysis of protein samples.
Journal of Chromatography , , Supercritical fluid extraction and cleanup with capillary GC-ion trap mass spectrometry for determination of polychlorinated dibenzo-p-dioxins and dibenzofurans in environmental samples. Journal of Chromatographic Science , 30 9 , LC-GC , 10 9 , , , Multipurpose capillary electrophoresis system with concentration gradient detection. Talanta , 39 10 , Capillary isoelectric focusing with a universal concentration gradient imaging system using a charge-coupled photodiode array.
Analytical Chemistry , 64 23 , Optimization of calculation parameters and experimental conditions for multiplex gas chromatography using computer simulation. Journal of Chromatographic Science , 30 8 , Pratt, Katherine F. Gas extraction kinetics of volatile organic species from water with a hollow fiber membrane. Analytical Chemistry , 64 18 , Water monitoring system based on gas extraction with a single hollow fiber membrane and gas chromatographic cryotrapping.
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Automation and optimization of solid-phase microextraction. Analytical Chemistry , 64 17 , Hawthorne, Steven B. Solventless determination of caffeine in beverages using solid-phase microextraction with fused-silica fibers. Chemical sensing using concentration gradient transients produced during diffusive transport of analytes. Analytical Chemistry , 64 14 , Dynamics of organic compound extraction from water using liquid-coated fused silica fibers.
Analytical Chemistry , 64 10 , Alexandrou, Nick; Lawrence, Michael J. Cleanup of complex organic mixtures using supercritical fluids and selective adsorbents. Analytical Chemistry , 64 3 , Universal detection for capillary isoelectric focusing without mobilization using concentration gradient imaging system.
Analytical Chemistry , 64 2 , High-performance capillary isoelectric focusing with a concentration gradient detector. Isoelectric focusing of proteins in a microcapillary with universal concentration gradient detection. Journal of Microcolumn Separations , 4 5 , Year Pawliszyn, Janusz; Wu, Jiaqi. Moving boundary capillary electrophoresis with concentration gradient detection. McDonnell, Theresa; Pawliszyn, Janusz.
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Capillary isotachophoresis with concentration-gradient detection: An application to the separation of synthetic peptides. Capillary isotachophoresis with concentration gradient detection. Analytical Chemistry , 63 17 , Year Pawliszyn, Janusz. Concentration gradient detection based on Schlieren optics. Spectrochimica Acta Reviews , 13 4 , Review Arthur, Catherine L. Solid phase microextraction with thermal desorption using fused silica optical fibers. Analytical Chemistry , 62 19 , Inexpensive fluid delivery system for supercritical fluid extraction.
Journal of High Resolution Chromatography , 13 3 , Year and earlier Pawliszyn, Janusz B. Indirect supercritical fluid extraction of organics from water matrix samples. Water Pollution Research Journal of Canada , 24 2 , Belardi, Robert P. The application of chemically modified fused silica fibers in the extraction of organics from water matrix samples and their rapid transfer to capillary columns.
Water Pollution Research Journal of Canada , 24 1 , Alexandrou, Nick; Pawliszyn, Janusz. Supercritical fluid extraction for the rapid determination of polychlorinated dibenzo-p-dioxins and dibenzofurans in municipal incinerator fly ash. Analytical Chemistry , 61 24 , Nanoliter volume sequential differential concentration gradient detector. Analytical Chemistry , 60 24 , Spectroelectrochemical sensor based on Schlieren optics.
Using coulometric flow-through electrodes, up to 15 such electrodes were incorporated into one housing. Each electrode was held at incremental working voltages from 0 to mV and a series of chromatograms were obtained simultaneously. Each electrode was monitored every 50 ms and the output from each electrode was. Figure courtesy ESA. Since the electrodes were in series and were coulometric, some analytes were totally removed at appropriate electrodes so leading to an apparent improvement in the chromatograms obtained.
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The electrode array design is commercially available from ESA Coulochem with 6 electrodes in series, each independently under full computer control. The overall concept of the electrode array system is similar to that of the diode array detector.
However, in a diode array detector a single beam of light passes through a single sample cell and is split into appropriate wavelengths prior to impinging on the diode array, rather than there being a series of individual electrodes. The analysis time was 63 min. Such systems were originally developed for dropping mercury electrodes in static polarography systems. To gain useful information from such a system, when it is being used to monitor a chromatographic eluate requires that the potential range to be scanned is approximately 1 V with a scan rate of ca 1 V s-I.
A number of waveforms can be used, i. The staircase form is considered the most suitable for use with solid electrodes because the equal voltage steps lead to more consistent background currents, which can then be subtracted from the signal. The resulting chromato-voltammogram is the ED equivalent of the rapid scanning optical detector.
The most obvious advantage of rapid scanning detection is that a voltammogram for each chromatographic peak is obtained.
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