Particulate matter beyond mass: recent health evidence on the role of fractions, chemical constituents and sources of emission.

ABSTRACT: Particulate matter (PM) is regulated in various parts of the world based on specific size cut offs, often expressed as 10 or 2.5 µm mass median aerodynamic diameter. This pollutant is deemed one of the most dangerous to health and moreover, problems persist with high ambient concentrations. Continuing pressure to re-evaluate ambient air quality standards stems from research that not only has identified effects at low levels of PM but which also has revealed that reductions in certain components, sources and size fractions may best protect public health. Considerable amount of published information have emerged from toxicological research in recent years. Accumulating evidence has identified additional air quality metrics (e.g. black carbon, secondary organic and inorganic aerosols) that ma

SUBMITTER: Cassee FR 

PROVIDER: S-EPMC3886392 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature