A quantitative ion chromatographic analytical method for the continuous determination of the sulfite and sulfide in gypsum and gypsum products is proposed. This paper established a determination method removal interference with each other between sulfite and sulfide that measure sulfite and sulfide content respectively. A set of calibration graphs for standards with different concentration ranges with indicate a good linear regression.The method presents good repeatability because in all cases the observed RSD was below 1% through two chromatographic parameters both of the retention time and the area of the analytical signal. The accuracy of the method was evaluated through recovery assays. The recoveries varied from93.9% to 105.7% depending on the anion, indicating that the extraction of the analytes was good enough to de used for the determination of the studied anions in gypsum sample.
Read full abstract7-days of FREE Audio papers, translation & more with Prime
7-days of FREE Prime access