【摘要】 本文采用微波高压溶样、ＩＣＰ－ＭＳ加入标准校正及分析质量控制方法，对ＧＢＷ０７６０１人发标样中１５种超痕量稀土元素含量的测定进行了研究。选择了微波高压消解最佳条件和仪器测试最佳参数。选用ＧＢＷ０７４０３土壤标样作为质量控样，其分析结果表明，研究测定ＧＢＷ０７６０１人发标样中１５种稀土分量具有较好的准确性。填补了原标样中仅Ｌａ、Ｃｅ和Ｙ有标准值，其余１２种稀土元素无分量值的空白。更多还原

【Abstract】 This paper describes the study on 15 ultra trace tare earth elements of hair certified reference material(CRM) by microwave acid digestion.A rapid and complete dissolution of the hair sample was achieved by using a microwave digestion procedure requiring only concentrated nitric acid and hydrogen peroxide.Fifteen ultra trace rare earth elements in hair CRM GBW07601 were determined by ICP-MS.The matrix inhibition effect was eliminated by the addition standard calibration curve.Detection limits for 15 rare earth elements are 0.007-0.026μg/L.Using soil CRM GBW07403 as quality control,the results obtained from this work are in good agreement with the certified values and reference values without separation and enrichment procedures.更多还原