Method for measuring monochloramine with a thiocarbamate indicator and buffer
AssigneeHach Company
InventorAmit Das
Life of this patent
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Abstract
An embodiment provides a method for measuring total chlorine in a solution, including: preparing a thiocarbamate indicator; introducing the thiocarbamate indicator to a solution, wherein the solution contains an amount of monochloramine; adding an additive to the solution, wherein the additive accelerates the reaction rate between the thiocarbamate indicator and monochloramine and causes a change in fluorescence of the solution; and measuring the amount of monochloramine in the solution by measuring an intensity of the fluorescence. Other aspects are described and claimed.
Claims8
A method for measuring monochloramine in a sample solution, the method comprising:
- preparing a reaction solution by combining the sample solution, a thiocarbamate derivative, and a buffer such that the reaction solution has a pH between 5 and 6, wherein the sample solution contains an amount of monochloramine;
- measuring a fluorescence intensity of the reaction solution;
- and
- producing an output of monochloramine concentration in the sample solution based upon the fluorescence intensity.
A method for measuring monochloramine in a sample solution, the method comprising:
- preparing a thiocarbamate derivative from a 7-hydroxy coumarin;
- preparing a reaction solution by combining the sample solution, the thiocarbamate derivative, and a buffer comprising phosphate and citrate such that the reaction solution has a pH between 5 and 6, wherein the sample solution contains an amount of monochloramine;
- measuring a fluorescence intensity of the reaction solution;
- and
- producing an output of monochloramine concentration in the sample solution based upon the fluorescence intensity.
Dependencies are inferred from the claim text.