As compared these materials with the polyethyleneglycol (PEG) methods, the coefficient of correlation of this two standards cur- ves(r)were 0.997 and 0.990 respectively. There was no significant differ- ence between them(p>0.5).

• 该方法与聚乙二醇(PEG)分离方法比较；其标准曲线相关系数(r)分别为0.；997和0