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forest95

木虫 (小有名气)

[求助] 红外吸收峰分叉是什么原因

最近在做一个原料的红外吸收图谱,在1680处有最大吸收,但吸收峰与药典标准图谱比较发现有些小分叉,不知是什么原因造成的,请各位老师帮忙分析下,谢谢。
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yuwenhao

禁虫 (正式写手)

感谢参与,应助指数 +1
本帖内容被屏蔽

2楼2012-08-13 15:14:47
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地狱血幽灵

专家顾问 (职业作家)

【答案】应助回帖

感谢参与,应助指数 +1
小叉影响你分析吗。太小的可以忽略啊
3楼2012-08-13 17:20:26
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sbffgef298

金虫 (小有名气)

最好还是上个图。
4楼2012-08-19 21:03:01
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pifuwei

金虫 (小有名气)

【答案】应助回帖

Peak around 1680 should belongs to C=O group's stretching. Absorption of C=O stretching is very strong in IR region. So, the intensity of this peak in your spectrum should be very large.  When the absorption of one IR peak is larger than 1, the S/N ratio will be decrease, and the peak will overload and split.
5楼2012-08-20 20:46:05
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