Pascual Pérez Ballesta

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A dynamic generation system based on permeation for the preparation of volatile organic compounds at ambient air concentration levels is described herein. The performance of the equipment, sources of uncertainties, and overall uncertainty value are also evaluated. The system is capable of generating multicomponent mixtures at ppb levels and simulating(More)
Polycyclic aromatic hydrocarbons (PAH) were analyzed from ambient air particulate matter (PM10) that was collected near Lago Maggiore (Lombardy) in Northern Italy from August 2008 to January 2009. Highest individual PAH concentrations ranged from 0.05 ng/m3 during mid-days in summer to about 6 ng/m3 duringthe nights of the coldest period. A multivariate(More)
Reference materials for particulate matter (PM) on filter media are not available for the quantification of polycyclic aromatic hydrocarbons (PAHs) in ambient air. This is due to the difficulty of obtaining reference material that has a homogeneous distribution on a filter surface that is large enough for characterization and distribution. High volume(More)
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