Hi Ken
GdCl3 has in our experience been harder to handle or more precisely get the
concentration right. It comes in anhydrous form and as hexahydrate and the
famous GdCl3 * xH2O. This can lead to too much or not enough relaxation.
Our "doped water" sample contains 0.1 mg/ml of (dry) GDCl3 and this leads to
a T1 of water in the range of 1 sec. 0.6 mM CuSO4 gives about the same T1.
Best regards
Clemens
On 8/8/2023 11:51 AM, Kenneth Sharp-Knott wrote:
Hi Everyone,
I was hoping to get some insight or tips into water soluble NMR relaxation
agents. I know that GdCl3 and Copper Sulfate are commonly recommended, but
I would like some specifics on suggested concentrations and hear about your
experiences using these.
In my own experience they don't seem to have a general one size fits all
concentration. There is a fine line between too much and too little GdCl3.
I'm trying to put together a recommended protocol for students needing a water
soluble relaxation agent.
Best Regards
--
Ken Sharp-Knott
Manager of Analytical Services and the NMR Facility
Department of Chemistry
Virginia Tech
(540)267-6502 (Cell)
(540)231-0885 (Office)
--
==========================
==========================
====================
Clemens Anklin Ph.D. Vice President
Bruker BioSpin NMR Applications & Training
15 Fortune Drive NEW Phone: 978-313-5NMR(5667)
Billerica MA 01821 twitter: _at_canklin
web: http://www.bruker.com
e-mail: clemens.anklin_at_bruker.com<mailto:clemens.anklin_at_bruker.com>
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