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| Gallego-Díez, Mary Luz, Correa-Ochoa, Mauricio Andrés and Saldarriaga-Molina, Julio César Validation of a methodology to determine Benzene, Toluene, Ethylbenzene, and Xylenes concentration present in the air and adsorbed in activated charcoal passive samplers by GC/FID chromatography. Rev.fac.ing.univ. Antioquia, June 2016, no.79, p.138-149. ISSN 0120-6230
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