Development of Ion Drift-Chemical lonization Mass Spectrometry

摘要

An ion drift-chemical ionization mass spectrometry (ID-CIMS) technique has been developed to detect and quantify trace gases,including volatile organic compounds and inorganic species.The trace species are chemically ionized into positive or negative product ions with a well-controlled ion-molecule reaction time.The ID-CIMS method allows for quantification of the trace gases without the necessity of performing calibrations with authentic standards for the trace gases.Demonstrations of the ability of ID-CIMS to accurately quantify isoprene and HNO_3 in a laboratory setting are presented.The results illustrate that the ID-CIMS technique facilitates detection and quantification of organic and inorganic species in laboratory kinetic investigations and field measurements.