摘要
建立了一个改进的单柱Ln-Spec提取色谱分离Hf方法。用该方法可以有效地分离出岩石样品的基体元素、REE和干扰元素等,并使Hf的回收率>90%、本底<5×10-11g。用该方法对一些国际和国家岩石标样进行了Hf分离,采用单聚焦和双聚焦两种型号的MC-ICPMS测定了Hf同位素组成,国际标样的结果与文献值在误差范围内完全一致,国家标样的Hf同位素结果具有很好的外部重现性。
A modified single-column Ln-Spec extraction chromatography method is developed for separation of Hf from rock samples. Using this method, hafnium can be effectively separated from the major and rare earth elements as well as the interference elements in the rock samples, with recovery of > 90%and whole procedure blank of < 5×10-11 g for Hf. A number of international and national rock standards were analyzed for Hf isotopic compositions using both single-and double-focus multiple collector-inductively coupled mass spectrometers. While the analytical results for the international rock standards are identical with those reference values within analytical errors, the external precision for the national rock standards is in good agreement.
出处
《地球化学》
CAS
CSCD
北大核心
2005年第2期109-114,共6页
Geochimica
基金
中国科学院知识创新工程领域前沿项目(GIGCX-03-06)
国家自然科学基金重点项目(40334039)~~
