班戈错Ⅱ湖晶间卤水蒸发硼浓度及硼同位素分馏研究  

Boron Concentration and Isotopic Fractionation Research in BangkogCo Intercrystal Brine Evaporation Process

作　　者：卿德林[1,2] 马海州[1] 李斌凯[1] 

机构地区：[1]中国科学院青海盐湖研究所,青海西宁810008 [2]中国科学院研究生院,北京100039

出　　处：《盐湖研究》2012年第3期15-20,共6页Journal of Salt Lake Research

基　　金：国家青年自然科学基金(40903024)资助

摘　　要：通过对采自西藏班戈错Ⅱ湖晶间卤水的模拟自然蒸发,发现在NaCl和KCl析出过程中,析盐矿物对硼具有较强的吸附作用,尤其是KCl。同时,伴随着NaCl和KCl的析出,硼同位素在液相和固相之间发生了明显的分馏。值得注意的是,在KCl析出过程中,固液相之间发生了硼同位素的反分馏现象,即11B倾向于进入KCl。Through the simulating natural evaporation of intercrystal brine which collected from Tibet BangkogCo lake II,we found that during the separating out of NaCI and KC1, NaCI and potassium have strong adsorption effect of boron, especially KC1. At the same time, significant boron isotopic fractionation has taken place between liquid phase and solid phase. It is worth noting that during the separating out of KCl,boron isotope reverse fraetionation took place between liquid phase and solid phase, namly 11B tend to enter KCI.

关 键 词：班戈错 晶间卤水蒸发 硼浓度 硼同位素 

分 类 号：P597[天文地球—地球化学]