Determination of 17 trace impurities in high purity sulfur powder by inductively coupled plasma mass spectrometry

Seventeen trace impurities in high purity sulfur powder such as manganese,nickel were determined by inductively coupled plasma mass spectrometry in this paper.Samples were dissolved by concentrated perchloric acid.After solution was evaporated,the impurities were enriched.The method detection limits were in the range from 0.1 to 50ng/g.Good spiked recoveries from 83% to 117% were obtained.The relative standard deviations(RSDs) calculated from seven consecutive injections of 10ng/mL standard mixtures were less than 5%.The operation is simple and the impurities are concentrated efficiently.It can meet the demand for the analysis of high purity sulfur powder from 99.999% to 99.9999%.