Refinery waste water treating was tested with an annular centrifugal extractor for naphthenic acid recovery in Shengli Refinery of Qilu Petrochemical Company.
介绍用三辛胺萃取剂回收石油酸废水中环烷酸的工艺流程、萃取设备和工业试验结果。
Methods the Soxhlet extractor method was adopted for the extraction of pigments, and acid extraction and ethanol precipitation method was used for the preparation of pectin.
方法用索氏提取法提取色素，酸提取乙醇沉淀法制取果胶。
The chlorogenic acid in V. Macrocephalum flowers was extracted and determined by Soxhlet extractor and HPLC to know chlorogenic acid content in V.
为了解木绣球花中绿原酸的含量，采用索氏提取法提取木绣球花中绿原酸并用HPLC法测定其含量。
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