有孔虫中硼的分离及其同位素组成测定的初步研究  

A Primary Study for Separation and Isotopic Measurement of Boron in Foraminifera

作　　者：张崇耿[1] 肖应凯[1] 汪品先[2] 王庆忠[1] 魏海珍[1] 孙爱德[1] 赵志琦[3] 

机构地区：[1]中国科学院青海盐湖研究所,青海西宁810008 [2]同济大学海洋地质重点实验室,上海200092 [3]中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550002

出　　处：《矿物岩石地球化学通报》2001年第4期415-417,共3页Bulletin of Mineralogy, Petrology and Geochemistry

摘　　要：本文初步建立了一种用硼特效树脂和阴、阳混和离子交换树脂相结合进行有孔虫中硼的分离和同位素测定的方法。该方法适用低硼含量 (纳克级 )的微体古生物中的硼的分离和同位素测定 ,分离过程不产生同位素分馏 ,满足了正热电离质谱法测定硼同位素的要求。The methods for the boron separation and its isotopic determination in [WT5BX]foraminifera was developed, using Amberlite IRA 743 resin and the mixture of cation-exchange resin (H + form) and anion -exchange resin (ion exchanger II, HCO - 3 form). This method is suitable for the boron separation and its isotopic determination of low boron content (ng level) samples such as palaeontological [WT5BX]foraminifera.No isotopic fractionation of boron was observed during the isotopic analysis, showing that the sample pretreatment method can meet the requirement of boron isotopic determination by positive thermal ionization mass spectrometry.

关 键 词：有孔虫 分离硼方法 同位素测定 

分 类 号：P597[天文地球—地球化学]