Method and apparatus for electrochemical analysis and an aqueous

Details Method and apparatus for electrochemical analysis and an aqueous Method and apparatus for electrochemical analysis and an aqueous

1990-09-10

1994-02-22

Nguyen, Nam

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204409, 204412, 204415, G01N 2730

Patent

active

052883744

ABSTRACT:
A method of electrochemical analysis involves contacting fluid samples of first and second different types in a mixed sequence with an electrochemical sensor, and also contacting the sensor with a standard fluid, in order to measure the values of an analytical item, e.g. ionic activity, in the samples with reference to a standard value of the same analytical item in the standard fluid. To improve response of the sensor, at each change in the sequence from the first sample type to the second sample type, the sensor is contacted with a second fluid having a value of the analytical item closer to the mean value of the analytical item in the second sample type than the value of the analytical item in the standard fluid. The method is applicable for example to analysis of blood serum and urine using an ion selective electrode.

REFERENCES:
patent: 3556950 (1971-01-01), Dahms
patent: 4409088 (1983-10-01), Kanno et al.
patent: 4680270 (1987-07-01), Mitsumaki et al.
patent: 4797191 (1989-01-01), Metzner et al.
patent: 4995959 (1991-02-01), Metzner
"TBS-50S Development of Urine Measuring System", Japanese Journal of Clinical Laboratory Automation, 12(4), p. 78, 1987.

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