ICP-MS的儀器參數對稀土元素離子信號強度的影響

Influences of Instrumental Parameters on Signal Intensity of Rare Earth Ions in ICP-MS

摘要: 研究了電感耦合等離子體質譜法(ICP-MS)的儀器主要參數(射頻功率、霧化氣流量、離子透鏡電壓)對15種稀土元素的離子、氧化物離子、氫氧化物離子和氫化物離子信號強度及各多原子離子產率的影響,并對各稀土元素多原子離子產率與各稀土元素性質的關系進行了探討.研究結果有助于在測定單一高純稀土中的其他稀土雜質時,選擇儀器參數.

Abstract: The influences of three instrumental parameters of ICP-MS spectrometer(radio frequencey power, nebulization gas flowrate and ion lens voltage) on signal intensity and productivity of a few kinds of ions formed from 15 rare earth elements in the plasma(single element ions RE⁺, oxide ions REO⁺, hydroxide ions REOH⁺ and hydride ions REH⁺) have been investigated. The relationship betWeen the productivity rate of these ions and properties of relevant RE element has been explored. The results use for selecting instrumental parameters for determination of 14 trace rare earth impurities in high-purity single rare earth samples by ICPMS.