珊瑚中硼的分离及其同位素组成的测定  

SEPARATION OF BORON IN CORALS AND DETERMINATION OF ITS ISOTOPIC COMPOSITION

作　　者：张崇耿[1] 肖应凯[1] 魏海珍[1] 王庆忠[1] 孙爱德[1] 赵志琦[2] 刘卫国[3] 王蕴慧[1] 

机构地区：[1]中科院青海盐湖研究所,西宁810008 [2]中科院地球化学研究所环境地球化学国家重点实验室 [3]中科院黄土与第四纪地质国家重点实验室

出　　处：《理化检验（化学分册）》2003年第11期652-654,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：介绍了用硼特效树脂和阴、阳混合离子交换树脂相结合进行珊瑚中硼的分离和纯化方法 ,满足了正热电离质谱法测定硼同位素的要求 ,并且对几个珊瑚样品进行了硼的分离和硼同位素组成的测定 ,结果满意 。The combined use of the boron specific ion exchange resin and the mixed cation anion exchange resins was applied to the ion exchange separation of boron in corals. The process of separation was modified on a micro scale. By this modified ion exchange separation, the volume of eluting solution and the blank value were remarkably reduced, and the interference of HCl to the MS determination was also eliminated. Isotopic composition of boron in corals was determined by the positive thermal ionization mass spectrometry in the eluate. The presented method has been applied to the analysis of several coral samples from the south sea of China and satisfactory results were obtained which were useful data for the study of paleoocean enviromental change.

关 键 词：珊瑚 硼 离子交换分离 古海洋环境 正热电离质谱法 

分 类 号：X142[环境科学与工程—环境科学] O657.63[理学—分析化学]