Precursor ion
From Mass Spec Terms
| DRAFT DEFINITION | 
| Precursor ion | 
|---|
| An ion that reacts to form particular product ions. The reaction can be unimolecular dissociation, ion/molecule reaction, isomerization, or change in charge state. The term parent ion is not recommended. | 
| Considered between 2004 and 2006 but not included in the 2006 PAC submission | 
| This is an unofficial draft definition presented for information and comment. | 
| See additional comments on the Precursor ion discussion page (archive of discussion between 2004 and 2006) | 
Related Terms
Orange Book Entry
Synonymous with Parent Ion. Instead of the use of parent ion and daughter ion terms the precursor and product ion terms are preferred respectively.
