The phase separation conditions for aqueons two-phase system based on polyethylene glycol(PEG)1500-polyvinyl pyrrolidone(PVP)30,000-Salt-H 2O were examined.

• 通过实验选择聚乙二醇 (PEG15 0 0 )与聚乙烯吡咯烷酮 (PVP 30 0 0 0 )组合表面活性剂 (NH4) 2 SO4 H2 O形成双水相体系及其成相条件。