叶片样品采用与植物原料收集、干燥技术规则相一致的方法进行采集和制备.用于分离异喹啉生物碱的萃取剂包括氯仿[2],二氯乙烷[5],80%的乙醇水溶液[6],和1:1的氯仿乙醇(具有不同极性的溶剂)[7]混合物.在不同温度,初始材料粉碎度,电荷密度和原料萃取剂重量比的条件下研究了溶剂类型对定量产率和萃取率的影响.对于质量为(2.5,5,或10g)的粉碎和过筛(通过一个1,3,或7毫米的网格筛)材料,将其置于一个磨口玻璃塞250毫升锥瓶中并加入5毫升25%的氨水.混合物用玻璃杆彻底搅拌以提供完全的润湿并可以在-20°C保持30分钟.然后,加入100毫升萃取剂,锥形瓶被关闭并置于恒温放置1-24小时.每种溶剂的萃取率在20°C和40°C确定(表1).
高分求人化学相关简单翻译三The samples of leaves were taken and prepared i
3个回答
相关问题
-
英语翻译The samples were taken from the stores and production pl
-
英语翻译The aspect ratios of the two samples were 4.75 and 11.2,
-
英语翻译1.We have examined the sample and are prepared to place
-
英语翻译So I suggest you to go ahead in preparing the sampls as
-
英语翻译XRD patterns of the samples were presented in Fig.1.The
-
Several of the passengers were hurt and one was taken to hos
-
I have taken many photos of the train and from it.怎么翻译
-
英语翻译the imparting of the heritage of the past and the prepar
-
The _________________ were carefully taken care of in the ho
-
英语翻译The concentrations of DBP,DEHP and DBP+DEHP in the sampl