نتایج جستجو برای: pm 10
تعداد نتایج: 1041392 فیلتر نتایج به سال:
background: carbon dioxide (co 2 ) is one of the most commonly used indicators of indoor air quality (iaq) in industrial area. the higher concentration level of co 2 and particulate matter (pm 10 ) in day care centre could affect children’s health. the objective of this study was to assess children’s health symptom, and measure the co 2 and pm 10 concentration level as iaq parameters in differe...
background: the present study investigated the effect of the middle east dust storm episodes on the concentration and composition of pm 10 during april to september 2013 in sanandaj city, western iran. methods: sampling was once every six days, and on dusty days using an omni air sampler. the pm 10 sample was collected on polytetrafluoroethylene filters. average of 24 h values of pm 10 mass con...
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...
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...
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