波长色散型X射线荧光光谱快速测定自然铜不同炮制品中主次量元素的含量

目的 全面了解自然铜不同炮制品中主次量元素的含量，为临床合理使用自然铜饮片提供科学依据。方法 应用波长色散型X射线荧光光谱（XRFS）对中药自然铜不同炮制品中Fe、S、Si、Al等10种主次量元素进行了测试。结果 Fe、S、Mn、Si、Al、Ti、Ca、P、Zn和Pb元素的最低检出限分别为:13.37、36.92、7.56、68.29、77.47、12.46、22.54、21.64、4.55、3.24mg/kg；对GBW（E）070088（铁矿石）、GBW 07267（黄铁矿）标准物质成分进行5次重复测定，准确度在94%~107%之间，RSD在1.0%~10.1%范围内。结论 波长色散型X射线荧光光谱仪检测中药自然铜不同炮制品中主次量元素具有较好的准确度和精密度，适用于对其所含元素的无损及快速检测。 

Rapidly Determination of Major and Minor Elements in Different Processed Products of Pyrite by X-Ray Fluorescence Spectrometry

OBJECTIVE A comprehensive understanding of the major and minor elements in different processed products of Pyrite， providing scientific basis for the clinical rational use of Pyrite. METHODS The determination method of 10 components including Fe，S，Si，Al and other major and minor components in different processed products of Pyrite by X-ray fluorescence spectrometry was established. RESULTS The detection limit of Fe，S，Mn，Si，Al，Ti，Ca，P，Zn and Pb was 13.37，36.92，7.56， 68， 29， 77.47， 12.46， 22.54， 21.64， 4.55， 3.24mg/kg. Determination of standard material composition of GBW (E) 070088 (iron ore) and GBW 07267 (pyrite) for 5 repetitions.The accuracy were 94%~107% and the RSD were 1.0%~10.1%. CONCLUSION The method can be used to determine the major and minor elements in different processed products of Pyrite， and it is accurate and convenient.