电感耦合等离子体质谱法测定井间示踪剂中稀土元素

基金项目:

中海油集团公司项目——“海上油田井间示踪剂检测技术研究”项目资助（C/KJF JDCJF003-2005）

Determination of Rare Earth Elements in Inter-well Tracers by Inductively Coupled Plasma-Mass Spectrometry

1.
College of Chemistry and Chemical Engineering, Ocean University of China，Institute of Oceanographic Instrumentation, Shandong Academy of Sciences, First Institute of Oceanography, State Oceanic Administration
2.
First Institute of Oceanography, State Oceanic Administration
3.
First Institute of Oceanography, State Oceanic Administration， Institute of Oceanology, Chinese Academy of Science
4.
First Institute of Oceanography, State Oceanic Administration， Institute of Oceanology, Chinese Academy of Science
5.
China National Offshore Oil Corperation
6.
First Institute of Oceanography, State Oceanic Administration
7.
College of Chemistry and Chemical Engineering, Ocean University of China，First Institute of Oceanography, State Oceanic Administration

摘要: 以甲醇为稀释剂，用电感耦合等离子体质谱法快速测定稀土示踪剂中17个稀土元素。研究表明，在优化的稀释剂甲醇浓度为2%（体积分数）、pH<2.47的条件下测定稀土元素，方法精密度（RSD）为1.23%～2.83%，日间6次测定的精密度为2.25%～4.76%，各稀土元素线性关系良好，检出限为2.0～9.0 ng/L；17个稀土元素的加标回收率为85%～108%，满足痕量元素分析要求。
- 稀土元素； /
- 井间示踪剂； /
- 电感耦合等离子体质谱； /
- 痕量元素分析
Abstract: A method for rapid determination of 17 rare earth elements in inter-well tracers was established with methanol as dilution reagent. The diluting solution was optimized as containing 2% methanol and pH<2.47. Under this optimized condition, the detection precision was 1.23%～2.83 %RSD and the inter-day precision in six days was 2.25%～4.76%RSD. The linear relationship for all rare earth elements was perfect with detection limits of 2.0～9.0 ng/L. The spike recoveries for 17 rare earth elements were 85%～108%, which satisfied with the demands for trace amount of rare earth element determination.
- rare /
- earth /
- element /