title: Composition differences at surfaces detected by adsorption and desorption of radiotracers.
abstract: A novel method for the detection of composition differences on solid surfaces is based on differences in the adsorption and subsequent partial desorption of a radiotracer by heterogeneities of the surface.
authors.forename: D A
authors.initials: DA
authors.lastname: Brandreth
authors.forename: R E
authors.initials: RE
authors.lastname: Johnson