WIT Press


Benzene And Toluene Chemical Sensors: Towards A Monocyclic Aromatic Hydrocarbon Badge For Individual Exposure

Price

Free (open access)

Paper DOI

10.2495/AIR000451

Volume

42

Pages

10

Published

2000

Size

954 kb

Author(s)

M.-L. Calvo-Munoz, T.-H. Tran-Thi & C. Roux

Abstract

A direct method of detection of two air pollutants, benzene and toluene, is proposed. These pollutants can be trapped in porous matrices, whose polarity and pore size can be monitored, and be discriminated by optical detection method. A fast response time (60 sec.) and a sensitivity of 10 ppm are obtained for benzene with thin films. 1 Introduction Monocyclic Aromatic Hydrocarbons (MAHs : benzene, toluene and xylenes) are important organic air contaminants emitted into the atmosphere by au- tomobile exhaust or storage, transfer and handling of fuel. The greatest health risk from exposure to MAHs is due to benzene which is

Keywords