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★ 小木虫: 金币+0.5, 给个红包,谢谢回帖
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分子半径可以通过等式估算a=0.33M0.46 a代表分子半径(Å),M代表分子量。0.46是M的上标。1Å=0.1nm。以BSA分子尺寸计算为例,其分子量MW:67,000 Da,根据公式算得BSA分子直径为11nm。 参考文献:[1] K. Granath, B. Kwist, Molecular weight distrbution analysis by gel permeation chromatography on sephadex, J. Chromatogr. 28 (1967) 69. [2] High-flux and high rejection TiO2 nanofibers ultrafiltration membrane with porous titanium as supporter |
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