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[[Category:Science]]
[[Category:Science]]https://wiki.pumpingstationone.org/index.php?title=NMR&action=edit
** Well, it's an experiment. It might serve as a hands-on, gentle introduction to spectroscopy, science, analytical instrumentation, etc. We're pretty sure no makerspace in the world has put one of these inside of it, but given the right community and encouragement around it, maybe something interesting could happen.
** Well, it's an experiment. It might serve as a hands-on, gentle introduction to spectroscopy, science, analytical instrumentation, etc. We're pretty sure no makerspace in the world has put one of these inside of it, but given the right community and encouragement around it, maybe something interesting could happen.
** Activities, applications, and maybe some classes are pending.
** Activities, applications, and maybe some classes are pending.
* While NMR makes a lot more sense with a grounding in organic chemistry (and thus potentially intimidating), it is worth pointing out that one could easily learn how to operate the instrument and get meaningful results if one has a specific application in mind. Quantification of ethanol in a sample could easily be performed with less than an hours time in initial training and no need for an organic chemistry background.
== Getting Involved / Authorization ==
== Getting Involved / Authorization ==
* Feburary 2023: Failed Switchmode PSU in the shim control box was replaced with a center-tap transformer and a self-designed +/-15V 7815/7915 linear PSU on an aluminum substrate PCB.
* Feburary 2023: Failed Switchmode PSU in the shim control box was replaced with a center-tap transformer and a self-designed +/-15V 7815/7915 linear PSU on an aluminum substrate PCB.
* As of March 2023, it still works.
* As of March 2023, it still works.
* October 2023: Primary Hard Drive (32GB SSD failed.) Recovered onto some random hard drive with <code>dddrescue</code>. Instrument online again. Pending analysis of corrupted files via <code>ddru_ntfsfindbad</code>
= Introductory Theory =
= Introductory Theory =
= Operation =
= Operation =
== Overview ==
== Overview ==
NMR uses thin (5mm diameter) glass tubes for samples. A sample needs to be liquid. Special solvents are often used to prepare a sample, but, direct analysis is possible. No harm in trying and seeing what happens.
NMR uses thin (5mm diameter) glass tubes for samples. A sample needs to be liquid. Special solvents are often used to prepare a sample, but, direct analysis is possible. No harm in trying and seeing what happens. Advanced techniques might involved solvent suppression pulse sequences or deuterated solvents.
== Hardware ==
== Hardware ==
|-
|-
|CDCl<sub>3</sub>|| Deuterated Chloroform ||Most common solvent used in NMR
|CDCl<sub>3</sub>|| Deuterated Chloroform ||Most common solvent used in NMR
|-
| || Sodium Acetate C13 ||
|}
|}
* Yep, there's no 'D' on the periodic table. When you see a 'D' in a chemical formula, it is [https://en.wikipedia.org/wiki/Deuterium Hydrogen-2 aka Deuterium]. When this form of hydrogen is used in a compound, it is often referred to as being "Deuterated". This is a form in which the hydrogen atoms are replaced with a more rare (but stable) isotope of hydrogen. The reason for doing this is that this form of hydrogen is not "NMR Active". Normally, a strong hydrogen signal (from say, plain water) would overwhelm the incoming NMR signal, thus making it harder to see small peaks. Deuterated solvents are used because they are not NMR active and so would not contribute to the spectrum.
== Peak Splitting / Multiplicity ==
== Peak Splitting / Multiplicity ==
