【摘要】 本文研究了以聚乙二醇（Ｍ＝４０００）为标准物质，用分光光度法建立标准物质的测试方法──ＢａＣｌ２法。对方法的最佳测定条件进行选择。该法简便、快速、有较高的精密度和准确度。可用于聚砜超滤膜的截留率和透水率的测定。更多还原

【Abstract】 The determinahon of polyethylene glycol (PEG- 4000) by spectrophotometry for evaluationof polysulfone ultrafiltration membrane performance is discussed. It displays the features of rapidity,simplicity and accuracy. Satisfactory results were obtained in determination of cut-off rateand water flux.更多还原