摘要
在石墨存在下测定Cs2BO2+离子是硼同位素测定的最佳方法，但NO3-却存在严重的干扰，本文对这种干扰进行了详细的研究。为了避免NO3-的干扰，本文改进了硼的分离提取方法，完全避免了NO3-的引入，取得了满意的测定结果。
The effect of NO3- on the isotopic measurements of boron based on Cs2BO2+ ion with graphite loading has been investigated. The measured 309/308 ratio is considerably reduced by the presence of NO3- ion, especially in the presence of mannitol, due to the formation ofCs2CN+ ion, which produces ion peaks at messes of 308 and 309. The procedure of ion exchange using Amberlite IAR 743 resin,a boron-spesific resin, and OH-Dowex 1 resin forextracting boron from sample solution is developed. The .NO3- ion can be removed from sample solution during sample preparation by using this procedure.
出处
《盐湖研究》
CSCD
1997年第3期54-61,共8页
Journal of Salt Lake Research
基金
国家自然科学基金
