AbstractIn precision gel permeation chromatographic (GPC) work, the spreading (zone spreading) characteristics of the instrument must be calibrated. Standard samples of anionic polystyrene have been used for this purpose. The molecular weight distributions of these standard samples, nevertheless, have not been determined carefully. In this work, several standard polystyrene samples obtained from Pressure Chemical Company were examined by GPC and by sedimentation velocity analysis. The results show that (1) the high molecular weight polystyrene samples have skewed molecular weight distributions as has been suspected and that (2) the present data treatment technique for GPC is effective for these very narrow‐distribution sample
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机译：摘要 在精密凝胶渗透色谱（GPC）工作中，必须对仪器的铺展（区域铺展）特性进行校准。阴离子聚苯乙烯的标准样品已用于此目的。然而，这些标准样品的分子量分布尚未被仔细确定。在这项工作中，通过GPC和沉降速度分析检查了从Pressure Chemical Company获得的几个标准聚苯乙烯样品。结果表明：（1）高分子量聚苯乙烯样品的分子量分布偏斜，（2）目前的GPC数据处理技术对这些非常窄分布的样品是有效的
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