Separation and Determination of Sulfur with Different Valance in Polysulfide Mixture

来源期刊：中南大学学报(英文版)2000年第3期

论文作者：ZHOU Ji-hong CHEN Qi-yuan ZHANG Ping-min YIN Zhou-lan

文章页码：149 - 151

Key words：polysulfide; separation; determination; X-ray fluorescence spectrum; valance

Abstract: A new process of separating sulfur with different valance from polysulfide mixtures was developed. Sulfide, sulfite and sulfur were separated by adding acetic acid in one step. The polysulfide mixture, sulfite solution and sulfur were oxidized to sulfate by hydrogen peroxide. The products were measured by X-ray Fluorescence Spectrometer(XRF) using filter method preparative specimen. The measurement needs only one set of standard sample. The effects of temperature and pH values on the separation were discussed. The results show that the recoveries range from 98.0% to 101.3% of sulfidic sulfur S(-II), 97.0% to 103.0% for sulfite S(IV) and 98.4% to 100.4% for polysulfidic sulfur S(0).