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1 引 言水溶性高聚物的水溶液在无机盐的存在下能分成液 固两相 ,称为聚合物 盐水 液 固萃取体系。是近 10年开发的新型萃取体系。该体系在酸性条件下已成功地用于金属离子的定量萃取分离和分离纯化生物活性物质。已报道的聚合物 盐水 液 固萃取体系都是在酸性条件
1 Introduction Water-soluble polymer solution in the presence of inorganic salts can be divided into liquid-solid two-phase, known as the polymer brine solid-liquid extraction system. It is a new extraction system developed in recent 10 years. Under acidic conditions, the system has been successfully used for the quantitative extraction of metal ions and separation and purification of bioactive substances. It has been reported that the polymer brine solid-liquid extraction system is in acidic conditions