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zhangwei1314

铁虫 (小有名气)

[求助] Mark–Houwink–Sakurada parameters 已有1人参与

请问各位有没有用过附件里面这个方程做过分析的? 我是有机小白,对里面的公式有点困惑。想问问方程里面的K值和a值是和洗脱剂和温度有关,还是根据标准曲线计算出来的。 我自己认为是前者,不知道对不对?请大神帮忙解答。感激不尽~~


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xiaoLifeiD

至尊木虫 (知名作家)

【答案】应助回帖

感谢参与,应助指数 +1
两种说法都对,K和a与样品,流动相,温度都有关系。一切跟粘度有关系的都会影响K和a。同时,K和a又是通过测定不同分子量下样品的特性粘度得到的,MH曲线的斜率就是a,纵截距就是logK

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