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。
However, extraction time, increase the amount of liquid case, the heavy metal extraction 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。
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.
介绍了内电解法在制革废水处理中的运行机理、工艺流程以及在制革废水处理中的研究应用现状及研究新进展。
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