ICP-MS的仪器参数对稀土元素离子信号强度的影响

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

摘要: 研究了电感耦合等离子体质谱法(ICP-MS)的仪器主要参数(射频功率、雾化气流量、离子透镜电压)对15种稀土元素的离子、氧化物离子、氢氧化物离子和氢化物离子信号强度及各多原子离子产率的影响,并对各稀土元素多原子离子产率与各稀土元素性质的关系进行了探讨.研究结果有助于在测定单一高纯稀土中的其他稀土杂质时,选择仪器参数.

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.