1. The unrefined nicotine was purified using solvent extraction and the nicotine was refined by a salification reaction of nicotine and palmitic acid.
并以溶剂萃取法对烟碱粗制品纯化，以烟碱和软脂酸的成盐反应精制烟碱。
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2. METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.
方法以对硝基苯甲酰氯为起始原料，经缩合、还原、重氮化、偶合、成盐等反应制得巴柳氮二钠。
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3. According to the salification conditions and relationships of saline-alkali soil in Songnen plain, we could get that the leading way of salt supply is different in different regions.
4. According to the salification conditions and relationships of saline-alkali soil in Songnen plain, we could get that the leading way of salt supply is different in different regions.
