Patent ID: 6617165
Filing Date: 2003-09-09
Classification: C23C,C23G,G01N,G05D,Y10T

Abstract:
A method for the automatic monitoring and control of the content of surfactants of an aqueous process solution, the method comprising the following steps, performed under program control:(a) taking a sample having a predetermined volume from the aqueous process solution; (b) determining the content of surfactants in the sample utilizing measuring equipment capable of analyzing the sample by selective adsorption, electrochemically, chromatographically, by splitting into volatile compounds, stripping out of such volatile compounds and detection thereof, or by addition of a reagent which varies the interaction of the sample with electromagnetic radiation in proportion to the content of surfactants, and measurement of the variation of such interaction; (c) outputting the result of step (b); (d) repeating steps (a)-(c); and (e) determining the surfactant content of one or more standard solutions if the results of step (b) on two consecutive drawn samples differs by a preselected value to check the functional capacity of the measuring equipment.