高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (S1): 79.

• Atomic Spectrometry • 上一篇    下一篇

Studies on the Calibration of Matrix Effects and Ployatomic Interference for Rare Earth Elements in Geochemical Samples by ICP-MS

Hu Sheng-Hong, LIN Sou-Lin, GAO Shan   

  1. 1. Faculty of Earth Sciences, China Uuniversity of Geosciences, Wuhan 430074, P. R. China;
    2. Faculty of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, P. R. China
  • 出版日期:1999-12-31 发布日期:1999-12-31
  • 通讯作者: LIN Sou-Lin

Studies on the Calibration of Matrix Effects and Ployatomic Interference for Rare Earth Elements in Geochemical Samples by ICP-MS

Hu Sheng-Hong, LIN Sou-Lin, GAO Shan   

  1. 1. Faculty of Earth Sciences, China Uuniversity of Geosciences, Wuhan 430074, P. R. China;
    2. Faculty of Material Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, P. R. China
  • Online:1999-12-31 Published:1999-12-31
  • Contact: LIN Sou-Lin

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摘要：

The primary factors limiting accuracy and precision using inductively coupled plasma mass spectrometry (ICP-MS) in the determination of rare earth elements (REE) are matrix effects and polyatomic interference. Matrix effects is non-linear and the degree of machine drift differs from one mass to the next. In general, the method to overcome non-spectroscopic matrix effects is to use matrix-matched standards. Polyatomic ions is a potential interference owing to the oxide and hydroxide formation of the light REE s (LREE),which interfere the heavy REE s (HREE) and the barium oxides of seven naturally isotopes (130-138 m/z) are also a potential source of interference. The polyatomic interference can be minimized using a knowledge of the sample matrix.

Abstract:

The primary factors limiting accuracy and precision using inductively coupled plasma mass spectrometry (ICP-MS) in the determination of rare earth elements (REE) are matrix effects and polyatomic interference. Matrix effects is non-linear and the degree of machine drift differs from one mass to the next. In general, the method to overcome non-spectroscopic matrix effects is to use matrix-matched standards. Polyatomic ions is a potential interference owing to the oxide and hydroxide formation of the light REE s (LREE),which interfere the heavy REE s (HREE) and the barium oxides of seven naturally isotopes (130-138 m/z) are also a potential source of interference. The polyatomic interference can be minimized using a knowledge of the sample matrix.

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