摘要
介绍了一种用Na2 CO3+K2 CO3 混合熔剂对岩石样品进行分解 ,用硼特效树脂和阴、阳混合离子交换树脂相结合进行岩石样品中硼的纯化分离的方法。采用该方法从岩石样品中提取、分离出来的硼能满足硼同位素质谱法测定的需要 ,不产生硼同位素分馏 ,硼同位素测定精度大多优于 0 .0 5%。
A method for isotopic determination of boron in rock samples was developed in this study. The rock samples were decomposed with the mixture of Na 2CO 3 and K 2CO 3. Boron in sample was then purified by ion exchange with Amberlite IRA 743 resin and the mixture of cation exchange resin (H + form) and anion exchange resin (ion exchanger Ⅱ, HCO - 3 form). The sample pretreatment method can meet the requirement of boron isotopic determination by thermal ionization mass spectrometry without any isotopic fractionation of boron. The precision for boron isotopic determination is better than 0.05% RSD.
出处
《岩矿测试》
CAS
CSCD
北大核心
2000年第3期169-172,共4页
Rock and Mineral Analysis
基金
国家自然科学基金!资助项目 (2 9775 0 2 8)
关键词
硼
岩石分解
离子交换
同位素测定
boron
alkali fusion
ion exchange
isotope determination
rock
