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Detection of malathion by the CO2 laser: Potentials and limitations

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Authors
Maravić, Dubravka S.
Trtica, Milan
Miljanic, SS
Radak, Bojan
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Abstract
Possibilities of on-line non-contact detection of the vapour of the commercially available pesticide malathion by the CO2 laser were investigated, using a photoacoustic technique developed in our laboratory. A set of laser/vapour spectral coincidences in the usual range of CO2 laser wavelengths were obtained, the samples being: the commercial product Etiol available on the market, solvent, emulsifiers, and neat malathion, all with air added to a mid-pressure of about 100 mbar and to atmospheric pressure. Relative contributions of the components in the product are discussed. A detection limit of 0.002 vol.% of the product in air was estimated. (c) 2005 Elsevier B.V. All rights reserved.
Keywords:
laser spectroscopy / CO2 laser / photoacoustics / pesticides / malathion / etiol / organophosphorous
Source:
Analytica Chimica Acta, 2006, 555, 2, 259-262

DOI: 10.1016/j.aca.2005.09.006

ISSN: 0003-2670 (print)

WoS: 000234585600011

Scopus: 2-s2.0-29244447657
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http://vinar.vin.bg.ac.rs/handle/123456789/2966
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