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