我們写的“由孕妇尿中提制秋白素”一文發表于本刊今年一月号后,有很多同志来函詢問有关問題。今綜合作一公开答复。在制造秋白素时,首先要求操作过程应按步驟慎密地进行。在蒸發时,温度越低,蒸發速度越快,其产量越好。如果在这一过程中,操作得不好,产品的数量及质量都会受到影响,所以这一步驟是第一重要环节。 The article “Emulating Qiubaisu from the urine of pregnant women” written by us is published in the January issue of this issue. There are many comrades inquiring about the relevant issues. This is a comprehensive reply. In the manufacture of acrolein, it is first required that the operation should be carried out step by step. When evaporating, the lower the temperature, the faster the evaporation and the better the yield. If this is not done well, the quantity and quality of the product will be affected, so this step is the first important step.