parent ion

parent ion

Precursor ion, see there.
References in periodicals archive ?
Parent ion scans of 85 Da were produced by scanning M51 from m/z 255-550 while focusing M52 on a single common product ion at m/z 85 produced by all acylcarnitine butyl esters.
By putting together these pieces of a jigsaw puzzle, a picture emerges of the molecular structure of the parent ion.
As previously described (12), each EPI spectrum was composed of fragments generated from the same parent ion at 3 different collision energies within a single scan, resulting from the accumulating property of the LIT and the new collision energy spread feature of the software (see Fig.
Additionally, ions corresponding to the core plus one or two bipyridine ligands are also observed, while the parent ion is not.
The mass of the parent ion serves as sufficient proof of the identity of simple hydrocarbon radicals.
In this procedure, the parent ion was selected with the first quadrupole and passed into the second quadrupole containing argon gas.
We are proud to see e2e recognized as a market leader in e-business solutions," said Peter Hamilton, CEO of e2e parent Ion Global and COO of chinadotcom.
Both the parent ion of PbTx-3--896 Da--and two daughter ions--878 Da and 724 Da--all with identical retention times, were monitored to confirm the presence of PbTx-3.
ESI-MS/MS parent ion scans for the GALC assay performed with a single 2-mm dried blood spot as well as a control assay containing a 2-mm blood-free paper disk are shown in Fig.
1]) scan shows a small parent ion peak at m/z 198, which is the expected [M+1] ion, and a larger peak at m/z 180 corresponding to loss of [H.
In subsequent runs of the same sample, MS/MS is performed on different parent ions which minimizes overlapping MS/MS analyses.