SEM Sample preparation secrets: How hydrocarbon background interference is prevented during secondary ion mass spectrometry on rocks?

  A refurnished geophysical science laboratory in a wide Midwetern Research University is now equipped with a new FIB/FESM, and searches to maximize the use and results from their new machine. As most of their applications are related to earth science study, they regularly coat and polished sections of rocks and meteorites who generally have tiny, sometimes submicron grains. Geologists generally prepare samples for microanalysis, by coating them wi