探讨了直接加热法、直接水蒸汽法、间接水蒸汽法、减压蒸馏、酒精沉淀等五种回收方法的优缺点。
The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reduced pressure distillation, precipitation method, is discussed.
采用微波辐照技术从山苍子中提取制备柠檬醛，使山苍子精油的提取率较传统的直接水蒸气蒸馏法平均提高36.5%以上。
By microwave irradiation, the citral was obtained from Litea cubeba fruits, the yield was risen in average 36.5% than by traditional distillation in a current of steam.
即用蒸馏水直接萃取烟草中的钾作为待测液，并与消化法分析结果进行了比较。
Namely, the potassium in tobacco was directly extracted with distilled water and then analyzed.
结论：直接水蒸气蒸馏法可以作为实验室提取丹皮酚的最佳方法。
Conclusion: Steam distillation is the most proper extraction method of paeonol from cortex moutan.
对于采用直接接触式膜蒸馏法的膜反应堆(DCMD)，相关研究早已展开。
The conversion studies were performed using a reactor associated with direct contact membrane distillation (DCMD).
图2以直接直接碘滴定法与通气蒸馏法检测金针干制品二氧化硫残留量结果比较。
Figure2 Comparison of testing results on the sulfur dioxide residue of dried daylily products using direct titration method and Rankine method.
图2以直接直接碘滴定法与通气蒸馏法检测金针干制品二氧化硫残留量结果比较。
Figure2 Comparison of testing results on the sulfur dioxide residue of dried daylily products using direct titration method and Rankine method.
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