ON THE CORRECTION OF INSTRUMENTAL SPREADING IN GPC FOR SAMPLES OF BROAD AND NARROW MWD
凝胶色谱中宽、窄分子量分布的峰加宽改正问题

Two model functions with broad distribution (Mw/Mn= 6.3) and narrow distribution (Mw/Mn= 1.22) were used in this paper. The effect of the broad and narrow distribution on the extent of correction of instrumental spreading has been examined. The calculated results showed that the differences of molecular weight, distribution of samples affect only the shape of chromatograms but not the extent of average molecular weight correction. The opinion prevailed in literature that peak broadening correction for samples with broad molecular weight distribution is negligible in comparison with that of narrow molecular weight distribution is a misunderstanding.