硼同位素是地球与行星科学研究中的一个重要工具，但是精确测量硅酸盐的硼同位素还存在一定的挑战，其主要原因源于样品消解。碱熔法是一种适合于硅酸盐样品的熔样方法。目前用于测量硅酸盐硼同位素的碱熔法采用昂贵的铂金或者玻璃碳坩埚和较高的助熔剂比例，容易在前处理过程中造成硼损失。为了实现硅酸盐样品的完全消解并避免硼的损失，文章报道一种使用银坩埚的NaOH碱熔法。该方法采用5：1的助熔剂与样品质量比，以及改进的溶样方法，实现了样品的完全消解并有效地避免了硼的流失。结合改进的硼特效树脂分离提纯技术和多接收电感耦合等离子体质谱仪（MC-ICP-MS）测量流程，文章报道了五个硅酸盐国际标样的硼同位素组成和硼含量数据。实验结果与国内外发表的数据在误差范围内一致。这个绿色且高效的方法对硅酸盐硼同位素研究具有重要意义。

Boron(B) isotope analysis is an important tool in the research of earth and planetary science. However, challenges still exist for precise and accurate measurements of boron isotope ratios of silicate material due to the challenges in sample digestion.
Alkaline fusion is a suitable sample dissolution method for boron isotope analysis in silicates. At present, alkaline fusion  methods require expensive platinum or glassy carbon crucibles as well as high flux-to-sample ratios. Additionally, the existing methods used for dissolving the fusion cake may cause boron loss. To achieve full dissolution and effectively prevent B loss, this study reports an improved alkali fusion method using sodium hydroxide and silver crucibles with a low flux-to-sample mass ratio of 5:1. Full dissolution was achieved through gentle heating in the presence of water combined with a stepwise dissolution procedure, which effectively prevented B loss during the dissolution of the fused alkaline cake. Using this improved procedure for dissolution, Amberlite IRA743 B-specific resin for B purification, and a multi-collector inductively coupled plasma mass spectrometer (MCICP- MS) for isotope analysis, we report boron isotope compositions and concentrations data for five silicate international standards. The results are consistent with the published data within analytical uncertainties. This safe and efficient method will greatly facilitate B isotope research of silicates.