采用二次离子交换法分离天然样品中的硼是一种更有效的从天然样品中分离和纯化硼的分离方法，因而，也进一步提高了硼同位素组成测定的测量精度。

The results showed that boron separation by the two-step ion exchange for isotopic measurement was more effective. It achieved high accuracy of isotopic measurement of boron.

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由于ECIS过程的主要推动力是电极电位，离子交换基体无需再生，消除了由化学再生过程产生的二次污染物。

Because the main driving force is the electrode potential in the ECIS process, chemical regeneration of the ion exchange substrate is not necessary.

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