A review describing mainly the liquid-solid extraction of metal ions by loaded polyurethane foam is given, with a discussion about the factors affecting the separation.
本文综述了负载泡塑萃取金属离子的应用进展，探讨了影响负载泡塑萃取分离的有关因素。
2
However, extraction time, increase the amount of liquid case, the heavy metalextraction efficiency is improved.
但在萃取时间、萃取液的总量增加的情况下，各重金属萃取效率得到提高。
3
The principle of liquid membrane technology and its application in pharmaceutical chemical engineering, extraction of rare metal, trace analysis and treatment of waste water are discussed in detail.