Ion mobility spectrometry (IMS)-a chemical separation technique using an electrostatic field

Author

Roehl, Joseph E.

Author_Institution

Environ. Technol. Group Inc., Baltimore, MD, USA

fYear

1989

fDate

1-5 Oct. 1989

Firstpage

2190

Abstract

The author describes a chemical sensing and discrimination technique called ion mobility spectrometry (IMS), which separates ionic species in a chemical vapor by their mobility in an electrostatic field. An advantage of IMS over other techniques is speed of response. The theory on which IMS is based is presented, and the results of a study of the dynamic response of an IMS cell consisting of a ionization region, a shutter grid, and a drift tube to particular chemicals are reported. Models of reactant ion and product ion behavior and empirical data collected on an IMS and the use of IMS as a chemical alarm are described.<>

Keywords

chemical variables measurement; electric fields; ion mobility; spectrochemical analysis; IMS; chemical alarm; chemical separation technique; drift tube; dynamic response; electrostatic field; empirical data; ion mobility spectrometry; ionization region; product ion behavior; reactant ion behaviour; response speed; shutter grid; Chemical industry; Chemical technology; Electrostatics; Instruments; Ionization; Laboratories; Organic chemicals; Plasma measurements; Spectroscopy; Toxic chemicals;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE

Conference_Location

San Diego, CA, USA

Type

conf

DOI

10.1109/IAS.1989.96944

Filename

96944