Controlled introduction of mass calibrant into a highresolution mass spectrometer

Alternative mass reference standards for direct analysis in real time mass spectrometry

“…Fluorinated compounds such as perfluorokerosene, perfluoroalkytriazines, perfluoroalkylphosphazenes, poly(perfluoroalkyl ether) and (perfluoroalkylethyl)silyl alkyl amines are widely used as reference standards in mass spectrometry. Here we report the DART mass spectra for these common fluorinated reference standards, and conclude that poly(perfluoroalkyl ether), sold as Fomblin® Y, is an inexpensive and convenient standard that provides a large number of reference peaks covering the range from m / z 85 to above 3000.…”

Mass spectrometry

“…Another inlet system is designed to reduce thermal decomposition effects (247). Controlled direct introduction of a mass calibrant into high resolution mass spectrometers is accomplished through use of a hollow probe (1343). A mass meter for an electromagnetic isotope separator (464) and a mass marker for the AEI MS-2H mass spectrometer (1487) are reported.…”