For 10
 points, name this technique that separates ions based on their ratio of charge to its namesake property.
This method is used to look at labelled protein samples in SILAC and ICAT proteomics. Rhenium
 filaments are used in thermal approaches to this. One way of preparing samples for this technique involves
 small volumes of electrically conductive liquid exposed to an electric field. That can result in cones and
 involves charged particles in aerosol. Analyzers used in this technique include time of flight and
 quadrapole ion traps. While preparation with MALDI and electrospray ionization is useful, this technique
 generally involves the Lorentz and centripetal force and the most abundant particle is the base peak. For 10
 points, name this technique that separates ions based on their ratio of charge to its namesake property.
This method is used to look at labelled protein samples in SILAC and ICAT proteomics.
{mass spectroscopy}