摘要
报道了利用少量AG1-X4阴离子交换树脂分离地质样品中Fe及测定Fe同位素的方法。对少量AG1-X4和AG MP-1树脂的分离效果进行了比较,测定了经过AG1-X4分离后的地质标样BCR-2、BHVO-2、BIR-1a、AGV-2、W-2、GSP-2、COQ-1、DTS-2b、JB-2、Jsd-1、GBW07105和GBW07267的Fe同位素组成,其结果与文献参考值在误差范围内一致。这些数据的发表对于地质样品Fe的化学分离和同位素测定提供了参考依据。此方法可以大大减少化学试剂用量,是一种快速有效分离铁的方法。
AG MP-1 anion exchange resin has been reported to be an effective chromatographic technique choice for the complete separation of Cu, Fe and Zn in geological samples. In the cases of Fe being the only interested element, AG1-X4 showed better separation efficiencies. In this work, an effective Fe separation procedure has been successfully established using small amount of AG1-X4 anion exchange resin, aiming to speed up separation, to reduce consumption of regents and to lower down the regent background. Comparison with AG MP-1 has been also made. Fe isotope compositions have been measured on geological reference materials, namely BCR-2, BHVO-2, BIR-la, AGV-2, W-2, GSP-2, COQ-1, DTS-2b from USGS （United States Geological Survey）, JB-2, Jsd-1 from GSJ （Geological Survey of Japan） as well as GBW07105 and GBW07267 from RMRC （National standard reference materials research center）. With the analytical results being identical with those reported values within analytical errors, the described separation method and reported data set may serve as valuable references for iron isotopic studies.
出处
《地球化学》
CAS
CSCD
2013年第1期46-52,共7页
Geochimica
基金
国土资源部公益性行业科研专项(200911043-17)
国土资源部地质调查项目(1212011120296)
关键词
离子交换分离
FE同位素
地质标样
ion exchange chromatography
iron isotopes
geological reference materials
