Eloi Camprubí-Casas

3 Questions 6 Answers 0 Followers

Questions related from Eloi Camprubí-Casas

What would be the chemical shift of methyl groups bound to Fe or Ni atoms?

I have (at least) one organic compound in my aqueous samples which has a marked peak at ~0.1 ppm (see attached spectrum). I need to find out what it is. It is not TMS, since I use another internal...

10 June 2021 7,815 6 View

Is it possible to do a 'spike' test in 1H-NMR to identify a molecule when you suspect it's a gas?

I suspect I have some dissolved methane (and maybe propane) in my aqueous solutions. Please see attached spectrum (for both spectra: number of scans is 256; same receiver gain; same method; water...

07 May 2021 1,911 6 View

Which external/internal standards would you use to aid in the quantification of small molecules using LC-MS?

This is long, sorry. I plan to use LC-MS to determine the concentration of several small molecules. In set of experiments these will be (i) derivatised sugar phosphates (using AEC) and in the...

07 April 2016 3,061 5 View