Veratryl alcohol was synthesized through the reduction of sodium borohydride from veratraldehyde with isopropanol as solvent, followed by solvent extraction and distillation under reduced pressure.
以藜芦醛为主要原料、异丙醇为溶剂，经硼氢化钠还原、溶剂萃取、减压精馏得到产物藜芦醇。
The conditions for sample disposition, reduction distillation and absorption spectrum were al - so studied.
探讨了样品处理，还原、蒸馏、吸收光谱等条件。
Method: Sulfur dioxide released from wine by distillation was absorbed with formaldehyde absorption solution, and then determination was conducted by reduction photometry.
方法：用甲醛吸收液吸收经蒸馏释放出的二氧化硫，再用还原光度法测定。
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