and less often, protonated molecules [{M}+H]+. The technique was first reported by Beckey in 1969. It is also the first ionization method to ionize nonvolatile and thermally labile compounds.
and occasionally, protonated molecules [{M}+H]+. The technique was first documented by Beckey in 1969. It is also the initial ionization method to ionize nonvolatile and thermally unstable substances.