title: Handheld miniature ion trap mass spectrometers.
abstract: For field applications, "miniature" and "rapid" have become almost synonymous, yet these small mass spectrometers are not useful if performance is too severely compromised. (To listen to a podcast about this feature, please go to the Analytical Chemistry website at pubs.acs.org/journal/ancham .).
authors.affiliation: Purdue University, West Lafayette, IN, USA.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Ouyang
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Noll
authors.forename: R Graham
authors.initials: RG
authors.lastname: Cooks