Method for monitoring sulfates

Details Method for monitoring sulfates Method for monitoring sulfates

G - Physics

01

N

324/23

G01N 27/413 (2006.01) G01N 27/416 (2006.01)

Patent

CA 2028787

54,188-A A B S T R A C T METHOD FOR MONITORING SULFATES AND OTHER IONS AT LOW CONCENTRATION A method for monitoring low anion concentra- tions, and particularly sulfate concentrations in aqueous solutions wherein the pH of the solution is adjusted to substantially reduce the presence of hydroxides therein, a nonionic solvent which does not contain sulfonate groups, is mixed with the solution, the mixture is exposed to an electrode selective for sulfate ions and to a counter electrode and the difference in voltage across the electrodes is measured to determine even trace amounts of sulfates in the solution.

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