Process and apparatus for the electrochemical determination of p

Details Process and apparatus for the electrochemical determination of p Process and apparatus for the electrochemical determination of p

1991-09-11

1993-09-14

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204409, 204403, 20415317, 422 8202, 422 8203, 436 66, G01N 2726

Patent

active

052445615

ABSTRACT:
In a blood gas analyzer, a measurement liquid, advantageously high-purity water, is fed from a suitable vessel to a diffusion cell in which the measurement liquid is brought into contact via a diffusion membrane with the blood sample to be tested. When the gases dissolved in the sample have diffused through the membrane, the measurement liquid which has remained static in the diffusion cell is propelled into a measuring cell in which the value of an electrical quantity related to the pCO.sub.2 is determined. The measurement liquid is then fed to discharge. In a preferred embodiment, the measurement liquid is discharged into the vessel from which it has been initially withdrawn via passage through means for retaining ionic impurities.

REFERENCES:
patent: 3926561 (1975-12-01), Lucero
patent: 3960498 (1976-06-01), Zindler et al.
patent: 4197853 (1980-04-01), Parker
patent: 4490234 (1984-12-01), Buzza

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