Method for determining the quantities of acids or bases in complex compositions

This invention relates generally to analytical techniques. More specifically, it is directed to methods for determining the levels of acids or bases in various compositions, e.g., stripping solutions. A method for determining the concentration of at least one acid or base in a complex solution is described. Multiple physical property values are first measured for the solution. The physical properties can be defined in the form of a set of solution property equations. The measured physical property values are then inserted into the solution property equations. When the equations are simultaneously solved, the desired concentration of the acid or basic component can be determined.