Capillary combined

Li, J., Kelly, J.F., Chernushevich, I., Harrison, D.J., and Thibault P., Separation and identification of peptides from gel-isolated membrane proteins using a microfabricated device for combined capillary electrophoresis/nanoelectro-spray mass spectrometry, Anal. Chem. 72, 599, 2000. 

Other studies in this specific area are also based on the catalytic effect of a variety of metal ions such as copper (II), cobalt (II), nickel (II), iron (III), and manganese (II) on the luminol-hydrogen peroxide reaction providing a rapid and efficient detection mode for these five ions, when an online CL detector is used before separation by CE [88], This contribution combines capillary ion analysis (CIA) and CL detection by means of a postcapillary reactor similar to the one originally developed by Rose and Jorgenson [80] and finally modified by Wu... 

Simpson, D. C., and Smith, R. D. (2005). Combining capillary electrophoresis with mass spectrometry for applications in proteomics. Electrophoresis 26, 1291-1305. 

Ovdat H, Berkowitz B (2006) Pore-scale study of drainage displacement under combined capillary and gravity effects in index-matched porous media. Water Resour Res 42, W06411, DOl 10.1029/2005WR004553... 

Fig. 4. Schematic drawing of combined capillary in situ cell and catalytic fixed bed reactor [adapted from Clausen et at. (32)].

Preliminary examinations of dextran structures were conducted by optical rotation, infrared spectroscopy and periodate-oxidation reactions. More detailed results can be achieved by methylation analysis [19]. The hydroxyl groups are methylated with methyl iodide after activation with sodium methylsulfinyl carbanion (Fig. 2). The methyl dextran is hydrolysed to the corresponding different methylated monosaccharides, which are furthermore reduced and peracetylated. The resulting alditol acetates of methylated sugars are separated by gas chromatography and identified by their retention times. In particular, a combined capillary gas-liquid chromatography/mass... 

P.A. D Agostino, L.R. Provost and K.M. Looye, Identification of tabun impurities by combined capillary column gas chromatography-mass spectrometry, J. Chromatogr., 465, 271-283 (1989). 

Ch.E. Kientz, A.G. Hulst, A.L. De Jong and E.R.J. Wils, Eluent jet interface for combining capillary liquid flows with electron impact mass spectrometry, Anal. Chem., 68, 675-681 (1996). 

Figure 4.15. Assemblies of propellers at the PFD/H20 interface that combine capillary and magnetic interactions. The direction of the magnetic dipole of the central (black) hexagonal plate is perpendicular to the plane of the interface. The light, grey-colored parts are made of dyed, non-magnetic PDMS.

Analysis Methods Hydrogen sulfide was determined using gas chromatography and a direct headspace sample injection onto a combination capillary column (77). Sulfur concentrations were determined by reference to external... 

Typical sensitivity in the range of femtomole to low picomole or attomole concentration. Best sensitivity combining capillary LC and nano-ESI. 

CEC is a hybrid separation technique that combines capillary HPLC (50-pm capillary diameter) with capillary zone electrophoresis, and its main advantage is the enormous number of theoretical plates that can be achieved. This is a result of the uniform, plug-like flow that electro-endoosmosis generates and the fact that this allows the use of very small particles (3 pm diameter). The technology is at an early stage of development (as there are problems inherent in packing columns of such small particle size f9J), but has already resulted in efficiency values of up to 387,000 theoretical plates per meter (10). 

Kfivtokovd, L., Gebauer, R, Thormann, W., Mosher, R.A., and Bodek, P, Options in electrolyte systems for online combined capillary isotachophoresis and capillary zone electrophoresis, J. Chromatogr., 638, 119,1993. 

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