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木子纳兰

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[求助] 关于EPR的问题

各位大神们,你们好,想问一下哪位了解EPR测试中数据出现的问题呢?
导师刚刚投递了一篇文章,审稿意见回来了,可是在EPR测试数据这里提出了好几个问题,纠结了,不明白如何处理
问题如下:
1.        About EPR spectra.
A weak and broad EPR signal (g =2.12) may be attributed to generation of NH radicals and synergetic effect of copper ions, which seems to be incorrect. Firstly, EPR signal for radicals were always around g = 2.00 with small linewidth (about 20 Gauss). Secondly, radicals may be generated in N atoms of pyridine, such as viologen redical (Angew. Chem. Int. Ed. 2007, 46, 3249 –3251). Thirdly, no evidence for appearance of mixed copper valence of 1P was found. Fourthly, whether impurities or vacancy factor lead to unusual EPR signal.
尤其是第四个,,希望大家了解的,会的,,帮助小女子一下子,不胜感激呀
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