Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1991-10-04
1994-03-29
Niebling, John
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
2041801, G01N 2726, G01N 27447
Patent
active
052981398
ABSTRACT:
An end-column conductivity detector is described. A sensing electrode is placed in the outlet end of a capillary that has a hole in its side wall through which electrolyte moves past the sensing electrode into a reservoir that contains the ground electrode. This structure is simple to construct, has almost no dead volume, and minimizes electrolyte contact with adhesives used to mount the sensing electrode. The end-column conductivity detector is operated in conjunction with a commercial capillary zone electrophoresis system that has a capillary cartridge and a UV absorption detector. This design thus permits sequential measurement of the absorption and conductivity characteristics of separated analyte zones. When a species can be detected by both conductivity and UV absorption, then the absorption coefficient can be determined from the relation between the conductivity signal and the concentration of the species.
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Huang Xiaohua
Zare Richard N.
Board of Trustees of the Leland Stanford Junior University
Niebling John
Starsiak Jr. John S.
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