Abstract：The sample was dissolved with nitric acid and hydrofluoric acid at low temperature. After perchloric acid was added for fuming, the salts were dissolved with hydrochloric acid. Then, the content of sulfur in fluorite was determined by inductively coupled plasma atomic emission spectrometry. The matrix effect, interference and correction among coexisting elements were investigated. The results showed that, the matrix calcium fluoride and coexisting elements (such as Al, Fe, Ba, Mn and P) had no influence on the determination. Under the selected conditions, the content of sulfur in the range of 0.001%-6.5% showed good linearity to the emission intensity with correlation coefficient higher than 0.999 0. The proposed method was applied to the determination of certified reference materials YSB14794-02 and actual sample of fluorite. The results were consistent with the certified values or those obtained by combustion iodometry. The relative standard deviation (RSD, n=11) was not more than 1.5%, and the recoveries were between 96% and 104%.
