Further, it is more difficulty to separate boron from halite, coral and carbonate of loess, due to its low boron concentration.

• 对海洋生物碳酸盐、石盐、黄土中硼的化学分离处理方法的研究和建立可行的实验流程对高精度测定这些样品的硼同位素组成是重要的。