Cottingham K.
Anal. Chem., 2006, 78 (3), pp 655–657
Described by many experts as the ultimate mass spectrometers, FTMS instruments have the highest resolving power and mass accuracy of any MS device on the market. With FTMS instruments, researchers can separate signals from ions that have nearly identical m/z values and obtain elemental compositions. Because of these advantages, the devices are ideal for proteomics, metabolomics, and petroleomics applications.
http://pubs.acs.org/doi/abs/10.1021/ac069365dAnalytical Chemistry