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萃取实验后萃取物和萃取剂的回收和处理已成为大家关注的焦点。很多教师进行了萃取剂的回收研究,提出蒸馏法、过氧化氢法、硝酸银法、亚硫酸钠法、氢氧化钠法等,但都未考虑萃取物的回收和利用。根据绿色化学对化学药品使用的“4R”原则(拒用危害品原则、减量使用原则、循环使用原则、重新利用原则),为了完全达到绿色化学的要求,笔者进行了萃取实验的绿色
After the extraction experiment extract and extractant recovery and processing has become the focus of everyone’s attention. Many teachers carried out the extraction of extractant research, proposed distillation, hydrogen peroxide, silver nitrate, sodium sulfite, sodium hydroxide method, but did not consider the recovery and utilization of the extract. According to the “4R ” principle (the principle of rejection of hazardous materials, the principle of reduced use, the principle of recycling, and the principle of re-use) of chemicals used in green chemistry, in order to completely meet the requirements of green chemistry,