Method and apparatus for inline electrochemical monitoring and a

Details Method and apparatus for inline electrochemical monitoring and a Method and apparatus for inline electrochemical monitoring and a

1993-07-26

1995-01-17

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204409, 204406, 204407, 204408, 204402, 20415311, 20415322, G01N 2726

Patent

active

053823311

ABSTRACT:
Method and apparatus for electrochemical monitoring of oxidizing agents, such as nitrite, or reducing agents in a water system and for controlling concentration levels for protecting surfaces exposed to the water. The apparatus includes a probe for selective exposure to fresh water samples of the system. The probe is connected to an analyzer that operates the probe and measures agent concentration by a chronoamperometry technique. A controller selectively feeds an agent to the water system in accordance with a set point to maintain a desired concentration level.

REFERENCES:
patent: 4033830 (1977-07-01), Fletcher, III
patent: 4566949 (1986-01-01), Berger
patent: 4668346 (1987-05-01), Entwistle
patent: 4822474 (1989-04-01), Corrado
Literature Search Report, Search No. 3367, Nalco Chemical Company.
Literature Search Report, Search No. 4314, Nalco Chemical Company.
TaKung Chen, Yau Yi Lau, Danny K. Y. Wong, and Andrew G. Ewing, "Pulse Voltammetry in Single Cells Using Platinum Microelectrodes," American Chemical Society, 1992.
Edison Sensor Technology Center, Case Western Reserve University, "Chemical Ion Sensors," Jun. 1989.
James A. Cox and Pawel J. Kulesza, "A Selective Eldctrolytic Sensor for Nitrite Base on a Modified Platinum Electrode," Elsevier Science Publishers, B.V., 1984.
J. E. Harrar, "Determination of Nitrite by Controlled-Potential Coulometry," Analytical Chemistry, vol. 43, No. 1, Jan., 1971.

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