利用SEM的能谱扫描功能，对钠盐调质脱硫剂硫化反应产物断面元素分布进行了分析。
The distribution of elements at the sulfidation reaction product section of a sodium salt-modified desulfurization agent was analyzed by using the energy-spectrum scanning function of SEM.
首次分离、纯化了甲基化反应的重要副产物，经元素分析、氢谱、质谱确定为双甲基化产物。
A byproduct in the methylating reaction was separated, purified and determined to be of the dimethylated product for the first time.
所得产物经元素分析，红外光谱，质谱等分析确证结构。
Chemical structures of products were confirmed by element analysis, ir, MS, et al.
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