Rapid determination of sulfate in WPA by ICP-AES method
An inductively coupled plasma atomic emission spectrometry(ICP-AES)method is developed for the rapid and accurate determination of sulfate in WPA.The phosphoric acid samples are dissolved by nitric acid,control the acidity of the solution,the detection limit of the method is 0.065 7 μg/mL at 180.731 nm,the correlation coefficient is 0.999 0,the recovery rate is 94.51%-104.61%,and the relative standard deviation is 1.44%,the results are consist with gravimetric method.This method is rapid and simple,the result has high accuracy and good precision.
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