منابع مشابه
Explorer Asthma and PM 10
PM10 (the mass of particles present in the air having a 50% cutoff for particles with an aerodynamic diameter of 10 μm) is the standard measure of particulate air pollution used worldwide. Epidemiological studies suggest that asthma symptoms can be worsened by increases in the levels of PM10. Epidemiological evidence at present indicates that PM10 increases do not raise the chances of initial s...
متن کاملDevelopment of Land Use Regression models for PM(2.5), PM(2.5) absorbance, PM(10) and PM(coarse) in 20 European study areas; results of the ESCAPE project.
Land Use Regression (LUR) models have been used increasingly for modeling small-scale spatial variation in air pollution concentrations and estimating individual exposure for participants of cohort studies. Within the ESCAPE project, concentrations of PM(2.5), PM(2.5) absorbance, PM(10), and PM(coarse) were measured in 20 European study areas at 20 sites per area. GIS-derived predictor variable...
متن کاملDifferences among black smoke, PM(10), and PM(1.0) levels at Urban Measurement Sites.
n Amsterdam, the Netherlands, we measured airborne particulate matter (PM) during winter 1998-1999, taking daily average measurements at an urban background site, at a busy street, and at a motorway. Comparison of black smoke, PM(10), and PM(1.0) levels showed that daily averages were highly correlated over time. Median daily concentrations were elevated at sites affected by traffic. The highes...
متن کاملSources of PM(10) and PM (2.5) in Cairo's ambient air.
A source attribution study was performed to assess the contributions of specific pollutant source types to the observed particulate matter (PM) levels in the greater Cairo Area using the chemical mass balance (CMB) receptor model. Three intensive ambient monitoring studies were carried out during the period of February 21-March 3, 1999, October 27-November 27, 1999, and June 8-June 26, 2002. PM...
متن کاملTo what extent can aerosol water explain the discrepancy between model calculated and gravimetric PM 10 and PM 2 . 5 ?
Inter-comparisons of European air quality models show that regional transport models, including the EMEP (Cooperative Programme for monitoring and evaluation of the long-range transmission of air pollutants in Europe) aerosol model, tend to underestimate the observed concentrations of PM 10 and PM 2.5. Obviously, an accurate representation of the individual aerosol constituents is a prerequisit...
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ژورنال
عنوان ژورنال: California Agriculture
سال: 1994
ISSN: 0008-0845
DOI: 10.3733/ca.v048n04p2