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2336929 
Journal Article 
Study of air quality through passive diffusion samplers. Recovery of volatile organic compounds adsorbed 
Colman Lerner, JE; Porta, A 
2011 
Yes 
Afinidad
ISSN: 0001-9704 
ASOC QUIMICOS 
BARCELONA 
68 
556 
406-411 
Spanish 
WOS:000304844200002 
Was optimized a method for monitoring the separation and quantification for 15 VOCs representative of those commonly found in air of the region of La Plata (hexane, methyl ethyl ketone, chloroform, carbon tetrachloride, benzene, trichlorethylene, methyl isobutyl ketone, toluene, perchlo-rethylene, ethylbenzene, m-xylene, p-xylene, o-xylene and styrene), a region characterized by the presence of a petrochemical complex and an urban area of high traffic. Later was studied the recovery of VOCs present in the desorbing 3M with dichloromethane (1 ml per sample, with mechanical stirring 10 minutes), dichloromethane (95%)-methanol (5%) and dichloromethane (50%)-methanol (50%.) Recovery for 15 analytes was varied, depending on the polarity of each of them, but in all cases the standard deviations obtained were lower than 10%, obtaining improved by increasing the volume fraction of methanol. The sensitivity of the method was found suitable for the VOC concentration range determined in the study area. 
VOCs monitoring; recovery factor; air quality