【作者】 曾静； 欧阳荔； 王京宇；

【Author】 Zeng Jing,Oyang Li,Wang Jingyu~* (College of Public Health,Peking University,Beijing 100191,China)

【机构】 北京大学公共卫生学院；

【摘要】 采用稀土元素Dy作为单一内标,通过CAIS校正法,对黄芪中铜、铅、镉的ICP-MS检测时的基体效应进行同时校正,并与药典传统内标方法校正效果进行比较。结果显示:Dy作为单一内标可同时完成对黄芪中三个被测重金属元素的准确校正,效果稳定;由于稀土元素具有在生物样本中含量低、同位素多、丰度变化范围大等特征,使得其在ICP-MS多元素测定的基体校正中有着很好的应用前景。更多还原

【Abstract】 During Cu,Pb,Cd concentration analysis of Astragalus by ICP-MS,rare earth element(REE) Dy was used as a single internal standard element for matrix effect correction by CAIS method.The result was compared with that by common method.It was showed:Simultaneous correction results of three elements by single Dy were accurate and stable;REE elements were potential to be internal elements for multi-elements analysis for its rarity in bio-samples.更多还原