ISSN:
1052-9306
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The difficulty of collecting volatile hydrocarbons, such as benzene, from street air in a form suitable for subsequent analysis is overcome by the use of a time-based elution procedure. By linking this technique to a gas chromatograph-mass spectrometer-data system, a rapid analysis is possible for low concentrations of collected material. Among advantages of this novel sample introduction procedure are the facility for collecting organic materials without interference from water vapour and their subsequent introduction into the g.c.-m.s. system without the use of any auxiliary solvents. Consequently the mass spectrometer can be used continuously on-line enabling the more volatile materials, normally masked by solvents, to be examined. This procedure is illustrated by the measurement of benzene and other hydrocarbon levels in street air (London). Following gas chromatographic separation the hydrocarbons can be identified by library search facilities attached to the mass spectrometer.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bms.1200010115
Permalink
