24小时热门版块排行榜    

查看: 1558  |  回复: 4
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

q459765031

木虫 (正式写手)

[求助] 求助:固体核磁氢谱分析

之前一直没有接触过核磁共振,求高手教导怎么分析,样品是利蛇纹石,下面是做核磁的地方给我发过来的参数什么的,我拍漏了什么直接复制了:
The1H MAS spectra were recorded on a Bruker AVANCE III 400 WB spectrometer equipped with a 4 mm standard bore CP MAS probehead whose channel was tuned to 400.18 MHz, using a magnetic field of 9.39T at 297 K. The dried and finely powdered samples were packed in the ZrO2 rotor closed with Kel-F cap which were spun at 12 kHz rate. The experiments were conducted at a contact time of 2 ms. A total of 16 scans were recorded with 5 s recycle delay for each sample. All 1H MAS chemical shifts are referenced to the resonances of adamantane (C10H16) standard (d=1.91).

1.png



2.png



3.png
回复此楼

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

雁过无痕

至尊木虫 (职业作家)

资深木虫

对应不同种类羟基,不过这试验显然分辨率不够,这么宽的峰谁知道能分出几个来呢?尝试下高转速或者CRAMPS吧。至于归属,找文献喽,没文献就自己分析,比如对应下红外拉曼什么的。
2025年招收硕士2名(可调剂),博士1名。招收药物固态化学教学科研人员(博士后或特聘副教授)各一名。
4楼2013-03-06 15:07:12
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 学员3nOo6K 的主题更新
信息提示
请填处理意见