Method of measuring hydroquinone levels in boiler feedwaters using electrochemistry
First Claim
1. A method of measuring the amount of residual hydroquinone in boiler feedwaters of the type containing copper employing an electroanalytical technique, the improvement comprising adding to said boiler feedwaters an effective amount for the purpose of an ionic base which maintains the pH of said boiler feedwaters in a range of 9 to 11 and increases the ionic conductivity of said boiler feedwaters and a copper chelant which complexes with the copper present in said boiler feedwaters and thereby employing an electroanalytical technique to measure the concentration of residual hydroquinone.
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Abstract
An improved method of electroanalytical detection of residual hydroquinone in boiler feedwater employing adding an ionic base and a copper chelant to the feedwater sample. Na3 PO4 and ethylenediamine are representative chemicals when square wave voltammetry (SWV) is used as the electroanalytical technique.
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Citations
7 Claims
- 1. A method of measuring the amount of residual hydroquinone in boiler feedwaters of the type containing copper employing an electroanalytical technique, the improvement comprising adding to said boiler feedwaters an effective amount for the purpose of an ionic base which maintains the pH of said boiler feedwaters in a range of 9 to 11 and increases the ionic conductivity of said boiler feedwaters and a copper chelant which complexes with the copper present in said boiler feedwaters and thereby employing an electroanalytical technique to measure the concentration of residual hydroquinone.
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