tag:blogger.com,1999:blog-3300702123878659843.post1268910983494672490..comments2024-03-26T05:25:50.831-04:00Comments on University of Ottawa NMR Facility Blog: Background Suppression in LiquidsGlenn Faceyhttp://www.blogger.com/profile/05146575170575279335noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-3300702123878659843.post-65362269577082176222015-04-29T10:18:47.926-04:002015-04-29T10:18:47.926-04:00Hello,
Just tried zg x zgbs sequences for 11B in ...Hello,<br /><br />Just tried zg x zgbs sequences for 11B in a 600MHz AVANCE III with a BBFO probe.<br />A probe spectrum (no sample, no tube) showed a reduction of ~100% of the probe background signal after phase and baseline correction.<br />I also tried this with an empty Wilmad glass tube and it reduced ~70% of the glass signal.<br /><br />Amazing results from an easy setup. =)<br /><br />Thank you!!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3300702123878659843.post-70913976655304394702013-03-15T14:06:13.036-04:002013-03-15T14:06:13.036-04:00Lora,
Thank you for the question. If you are usi...Lora,<br /><br />Thank you for the question. If you are using quartz NMR tubes, then the background may be due to the probe inserts near the coil.<br /><br />GlennGlenn Faceyhttps://www.blogger.com/profile/05146575170575279335noreply@blogger.comtag:blogger.com,1999:blog-3300702123878659843.post-87664869261479154482013-03-15T14:02:36.620-04:002013-03-15T14:02:36.620-04:00Hi,
I have not tried the sequence yet, but I have...Hi,<br /><br />I have not tried the sequence yet, but I have been using quartz NMR tubes and still see the same background peak. Do you think the tubes are becoming contaminated over time? I usually process the spectra in the software using a backward LP and the a baseline correction... it seems to work relatively well. I am looking forward to trying out the sequence you describe though! Thank you!Lorahttps://www.blogger.com/profile/00794230203725249132noreply@blogger.comtag:blogger.com,1999:blog-3300702123878659843.post-4511926519323562762010-04-22T08:00:55.915-04:002010-04-22T08:00:55.915-04:00Daniel,
Thank you for your comment. I don't ...Daniel,<br /><br />Thank you for your comment. I don't believe it is possible to get rid of the 11B signal from the portion of the NMR tube inside the coil. As far as the probe is concerned, this is part of the sample (and therefore "should" be observed).<br /><br />GlennGlenn Faceyhttps://www.blogger.com/profile/05146575170575279335noreply@blogger.comtag:blogger.com,1999:blog-3300702123878659843.post-83608973832503086602010-04-22T05:04:56.360-04:002010-04-22T05:04:56.360-04:00I have tried this experiment but I still get some ...I have tried this experiment but I still get some background signal. May be the Z-restored spin-echo 13C experiment of <i>Xia et al, Magn. Reson. Chem. 2008; 46: 432–435 </i> could be a solution for 11B?<br /><br />best regardsUnknownhttps://www.blogger.com/profile/15086673120709223015noreply@blogger.com