Here is a "physical" way. For the same purpose, we have used Teflon tubes
routinely for years. One catch here is that the probe we use is a big one
(16 mm). The Teflon tube insert with a diameter ~ 13 mm is purchased, then
slugged into a 16-mm (OD, 14 mm ID) glass sleeve (~ 4" long) using Teflon
tape. (The Analytical Chemistry of Silicones, L. Smith, 380, John Wiley &
Sons (1991)).
Or you can have it done for you if you just have a few samples & need quick
solution (Check this out
http://www.dowcorning.com/content/services/servicesanalyt/default.asp
<
http://www.dowcorning.com/content/services/servicesanalyt/default.asp> ).
Regards,
Sanlin Hu
Dow Corning Corporation
Advanced Tech & Venture, DC4 - 1D1
Midland, Michigan 48686
Phone: (989) 496 8526 Fax: (989) 496-5121
sanlin.hu_at_dowcorning.com
http://www.dowcorning.com <
http://www.dowcorning.com>
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-----Original Message--
> From: Fauzi Mohd Som, Dr [mailto:fauzi_at_lgm.gov.my]
> Sent: Wednesday, August 18, 2004 4:44 AM
> To: ammrl_at_ammrl.org
> Subject: Removing Background signal for Si-29 NMR
I wonder if anyone can provide me a suggestion on how to remove the
background signal of the quartz NMR tube when I do Si-29 liquid state NMR.
Best regards,
Fauzi Mohd Som (Dr.)
Malaysian Rubber Board
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Received on Fri Aug 20 2004 - 14:28:37 MST