Chemistry: physical processes – Physical processes – Crystallization
Patent
1980-10-17
1982-11-02
Schor, Kenneth M.
Chemistry: physical processes
Physical processes
Crystallization
204 1T, 204195G, 204195M, 204195R, 210662, 210 961, 422 68, G01N 2746
Patent
active
043571433
ABSTRACT:
A method for determining the concentration of a specific ion in a solution which involves dividing the solution to be analyzed into two portions. One portion is treated with an ion exchange resin with the other portion being treted with a reagent, e.g., a precipitating agent in order to remove the desired ion from solution, and at least one ion exchange resin. The reagent and ion exchange resin can be one and the same. The two streams are then passed into opposite sides of a detection cell comprising two ion specific electrodes connected through conventional bridge circuitry. The concentration of the desired ion is determined from the difference in electrical potential between the two ion specific electrodes. Instead of dividing the stream and then treating the reference portion it is also possible to treat the entire stream first to replace all ions changed oppositely to the desired ions and then divide the streams.
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patent: 4002428 (1977-01-01), Blanchard
Phillips Petroleum Company
Schor Kenneth M.
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