直接熔融热电离质谱法测定硼酸盐矿物中的硼同位素组成.PDF

Bulletin of Mineralogy, Petrology and Geochemistry Vol29 No3, July 2010 1, 2, 3 2 2 1 马云麒 , 肖应凯 , 诸葛芹, 蒋生祥 1. , 730000; 2. , 810008; 3. , 1000 9 : 为简化 一些硼同位素样品的前处理过程, 本文 直接熔融法, 即待测样品直接在电离带上进行熔融后测定其硼同位 素值本文测定了柱硼镁石电气石钠硼解石碳化硼硼化硅等几种含硼化合物中的硼同位素组成, 并与传统的溶样方法 进行了比较结果表明, 直接熔融法可以快速且高精度测定上述几种化合物中硼同位素组成, 相对内精度小于0.05 , 为此 类含硼化合物的硼同位素测定提供了 一种新的测试方法 : 直接熔融法; 硼同位素; 硼矿物; 高精度 + : P597 2 :A :2010) Isotopic Determination of Boron in Borate Minerals by Thermal Ionization Mass Spectrometry Using Direct Fusion 1, 2, 3 2 2 1 MA Yunqi , XIAO Yingkai , ZHU Geqin , JIANG Shengxiang 1. L anz hou Institute of Chemical P hys ics, Chinese A cademy of Sciences, Lanz hou 730000, China; 2. CA S K ey L aboratory of S alt L ake Resources and Chemistry , Qin hai Institute of S alt L akes, Chinese A cad emy of S ciences, X inin 810008, China; 3. Graduate Univers ity of the Chinese A cademy of Sciences, Beij in 1000 9, China Abstract:In order to simplify the pretreatment process of some borate minerals, w hich are used to determine boron isotope. The boron isotope ratio has been determined in several boron minerals by using a recently developed high precision thermal ionization mass spectrometry technique. Direct fusion of sample on the filament was been com pared w ith samples fused in conversional method prior to loading. The procedure ha