SEZIONE DI GENOVA
Receptor-oriented source apportionment models intend to identify and quantify contributions from different source types to pollutant concentrations measured at receptors. Air quality managers should use receptor model results as part of a broader “weight of evidence” approach that challenges their accuracy in light of other information, such as that derived from applying multiple solution methods, evaluating performance measures, obtaining more source-specific PM measurements, conducting detailed case studies, and reconciling with emission inventories and source-oriented models. Modern air quality management also requires more specific source identification than “mobile sources,” “biomass burning,” “industry,” “fugitive dust,” “sea salt,” and “secondary sulfates and nitrates,” which are often the categories indicated by a receptor model study. As primary emissions decrease, the importance of secondary organic aerosol (SOA) increases. Refining source contributions is seldom possible when using only the mass, elements, water-soluble inorganic ions, and carbon fractions available from widely-used speciation networks More information can, and should, be obtained from existing compliance and speciation network samples that can address these challenges.

DATA: 10-03-2016

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