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qinlei610銀蟲 (初入文壇)
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[求助]
絕對(duì)分子量相對(duì)分子量是怎么回事 已有1人參與
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端基分析法是絕對(duì)分子量,冰點(diǎn)降低之類的就是相對(duì)分子量,而膜滲透壓法是絕對(duì)分子量? 自己的理解是端基分析法是測(cè)得高分子絕對(duì)的數(shù)量,直接測(cè)量,絕對(duì)的分子量 冰點(diǎn)降低是側(cè)面了解冰點(diǎn)會(huì)降低多少,相對(duì)應(yīng)多少分子量的高分子,得到相對(duì)的分子量 換到膜滲透壓就理解不了了,感覺也是和冰點(diǎn)降低一樣,結(jié)果不是,是我哪里理解有問題,有大神知道么 |
銀蟲 (初入文壇)
金蟲 (正式寫手)
It must be emphasized that molecular weights determined by any of the colligative properties, osmometry in particular, are absolute molecular weights;that is, the values are determined by theory and not by prior calibration. |
銀蟲 (初入文壇)
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