Intermittent electrolytic membrane suppressor regeneration for i

Details Intermittent electrolytic membrane suppressor regeneration for i Intermittent electrolytic membrane suppressor regeneration for i

1995-03-03

1996-10-29

Phasge, Arun S.

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204520, 204536, 204542, 210635, 210638, 210656, 210659, 210662, 210663, B01D 1508, B01D 6148

Patent

active

055693652

ABSTRACT:
A method and apparatus using suppression of eluents for the analysis of anions or cations in ion chromatography. The invention relates to the intermittent use of the electric field during electrochemical suppression to minimize background noise during detection of the ionic species caused by the application of an electric field using an electrolytic membrane suppressor. Using this intermittent electrochemical suppression system allows the detection of the analyte in the absence of the electric field. The system finds particular benefit in reducing background noise created during electrochemical suppression, and in reducing the baseline interference when analyzing organic solvent-containing samples.

REFERENCES:
patent: 3920397 (1975-11-01), Small
patent: 4403039 (1983-09-01), Ban
patent: 4459357 (1984-07-01), Jansen
patent: 4999098 (1991-03-01), Pohl
patent: 5248426 (1993-09-01), Stillian
patent: 5352360 (1994-10-01), Stillian
patent: 5433838 (1995-07-01), Dasgupta et al.
Rabin et al., J. Chromatog 640 (1993) pp. 97-109, "New membrane-based electrolytic suppressor device for suppressed conductivity detection in ion chromatography".
Tian et al., J. Chromatog 439 (1988) pp. 159-163 "High performance electrochemical suppressor for ion chromatography".
Small, H., Ion Chromatography, Plenum Press (1989) pp. 164-167.

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