采用毛细管气相色谱法，以外标法测定枸橼酸托烷司琼中乙醇、二氯甲烷、氯仿、四氢呋喃、二烷、吡啶和甲苯的含量，用串联的HP - 1 0。
A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.
探讨了如何控制在均相条件下以高脱乙酰度的壳聚糖为主要原料，在乙酸水溶液- 乙醇- 吡啶介质中实现壳聚糖N位乙酰化反应的问题；
By high acetylation of chitosan at N position with acetic anhydride in a homogeneous medium known as acetic solution–alcohol-pyridine system, water-soluble chitosan was prepared.
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