关键词: 电感耦合等离子体质谱法, 稀土元素, 地质样品测定

Abstract:

HF-HNO₃-H₂SO₄+aqua regia system was applied to complete sample digestion.National Primary Reference Material instead of standard solution of the measured elements was employed to make the standard work curve，and then we used inductively coupled plasma mass spectrometry（ICP-MS） to determination of rare earth elements in geological samples.The results indicated that the accuracy，precision，detection limit of the method are conform to the requirements of the specification，meanwhile，it greatly reduces the matrix effect in the practical application of interference to some degree，and eliminate of errors that were introduced during the period of making standard work curve.In addition，the method had the advantage of accurate results and easy operation，which can be widely applied to determination of amounts of rare earth elements in geological samples.

Key words: ICP-MS, rare earth elements, geological sample determination