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Abstract
A new method of ultraviolet absorption spectrophotometry was developed for the simultaneous determination of pyridinium-1-propane-3-sulphonate (PPS) and saccharine in bright electroplating bath. The effects of pH, inorganic salt concentration and 1,4-butynediol on the absorbance of PPS and saccharine were studied. This method is rapid and simple, and can be applied to the on site determination of the concentration of PPS and saccharine in the electroplating bath.