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zuocuiping木蟲 (職業(yè)作家)
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[交流]
核磁共振怎么測試溶液
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最近有個審稿人提就下面的問題, 4 decimal places means that the mass of such compounds must be given with 4 decimal places to reliably confirm the assumed molecular sum formula, e.g. m/z = 200.3456 instead of 200 because different structures can have the mass 200 but only ones will have the mass 200.3456. To determine the structure of the molecule in the liquid phase, an NMR spectrum is also required (e.g. an OH radical can be added to a molecule at different positions without changing the exact mass). 一般質(zhì)譜不就是一位有效數(shù)字嗎?有沒有大佬知道呢? 發(fā)自小木蟲Android客戶端 |
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