methanol-chloroform的意思|示意

An improved method of synthesizing trimethyl orthoformate through azeotropic distillation by taking sodium methoxide in methanol and chloroform as raw materials has been presented by the author.

介绍了以甲醇钠甲醇溶液与氯仿为原料，采用共沸蒸馏法制备原甲酸三甲酯的改进工艺。

Results It is evident that the content of matrine in Sophora flavescens using chloroform as solvent is less than using methanol or acid methanol.

结果用氯仿做溶媒时苦参中苦参碱的含量明显低于用甲醇或酸性甲醇做溶媒时的含量。

Using 70% methanol, the Polygonum multiforum extract was concentrated by ultrasonic method . Then concentrated extract was leached with chloroform and separated into free and bound anthraquinones.

何首乌用70%甲醇超声提取浓缩后，用氯仿萃取分离出游离和结合型蒽醌，得到定量用试液。

Furthermore, we found the best HPLC spectrum of Fritillaria Jilin was soxhlet method with the solvent of chloroform and methanol (4:1), the others were no better than it.

经氯仿：甲醇(4：1)混合溶剂索式提取的贝母药材HPLC图谱效果最好，其它次之。

Method Methanol and mixed solvent of chloroform and ethyl acetate extracts from Cordyceps formosana were analyzed with HPLC-DAD-HRMS.

方法用高分辨液质联用分析法，对其甲醇提取物及二氯甲烷和乙酸乙酯混溶剂提取物进行了成分分析。

The samples were prepared by extraction using methanol followed by partitioning between ammonium hydroxide and chloroform.

样品经甲醇提取后，再用氨水-氯仿萃取。