Hi,
you used 99.8% MeOD so you are probably measuring on a sensitive probe. The
shift difference in the (almost) pure Ethylene Glycol is flawed by radiation
damping. You should use deuterated Ethylene Glycol. If you use pure Methanol
you will see a similar effect.
Best regards,
- Bernd -
On Fri, Aug 18, 2023 at 15:20, Walter Zhang wrote:
Dear All,
I need to use 80% Ethylene Glycol for high temperature calibration.
Before I do the calibration, I compared it with 99.8% MeOD at 303 K.
When I set temperature to 303 K,
99.8% MeOD gives 303.03 K while 80% Ethylene Glycol gives 300.57 K
The difference between the two calibration samples is 2.46 K.
Is this normal?
Your comments are appreciated!
Best regards,
Weixing Zhang
St. Jude Children’s Research Hospital
Memphis, TN 38105
USA
------------------------------------
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#466): https://urldefense.com/v3/__https://ammrl.groups.=
io/g/main/message/466__;!!PvDODwlR4mBZyAb0!S4XJqTZDTKZ8a0D3d6oZhB8w4L_X7vT0=
-TfHluJuwDhwUEFuiFX82vGabAH9GIIFHCcJOprwhZLX$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/100827188=
/7559972__;!!PvDODwlR4mBZyAb0!S4XJqTZDTKZ8a0D3d6oZhB8w4L_X7vT0-TfHluJuwDhwU=
EFuiFX82vGabAH9GIIFHCcJOufJwMJT$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
Received on Fri Aug 18 2023 - 16:44:24 MST