聚醚砜超滤膜法纯化电泳用Fe(OH)3溶胶

Purification of Fe(OH)_3 colloid with polyethersulfone ultrafiltration membrane

Fe(OH)3溶胶的纯化是物理化学溶胶电泳实验中最大的难题,因为传统的火胶棉半透膜渗析纯化法不仅费时费力,而且成功率很低,本文将新型的膜分离技术应用于溶胶的纯化,提出了用自制的聚醚砜超滤膜纯化溶胶的方法,实验结果表明,此法不仅纯化效果好,而且省时省力,简单易行,是替代传统方法的良好方法。

Purification of Fe（ OH ）3 colloid is a problem in the physical chemistry experiments on colloid electrophoresis because the traditional purification method is not effective. The traditional purification is carried out with semi-permeable membrane. The process being time-consuming and strenuous ,the succeed rate of membrane preparation being very low are the major defects of the traditional method. In this paper, a new method is proposed in order to solve the above problem. The purification is carried out with self-prepared polyethersulfone ultrafihration membrane, which is an application of ultrafiltratlon technology. The experiment results show that this new method is effective, time-saving and convenient. Therefore, the new method is an ideal altemafive to the traditional one.