Direct determination of metal impurities in high purity zinc sulphide by inductively coupled plasma mass spectrometry

Eleven trace metal impurites in high purity zinc sulphide powder such as magnesium,aluminium,manganese,nickel were directly determined by inductively coupled plasma mass spectrometry in this paper.Sample was prepared by diluted hydrochloric acid before instrumental analysis.Good spiked recoveries from 91% to 106% were obtained.The relative standard deviations(RSDs) calculated from seven consecutive injections of 10 ng/mL standard mixtures were less than 5%.