نتایج جستجو برای: fractionated particulate matter

تعداد نتایج: 237002  

Introduction: Air pollution due to particulate matter is a major environmental and health issue in all regions of the world. The aim of this study was to investigate the health impacts of PM10 (particulate matter with an aerodynamic diameter ≤10μm) in Khorramabad city, Iran in 2014. Materials and methods: In this study, PM10 sampling was conducted by a high-volume sampler at flow rate of 1.1-1...

Journal: :Environmental Health Perspectives 2000
D R Reyes O Rosario J F Rodriguez B D Jimenez

In recent years, several hypotheses have emerged to explain the toxicologic activity of particulate matter. Organic compounds, ultrafine particles, biologic components, and transition metals are some of the constituents that reportedly exert some type of adverse effect on human health. A considerable fraction of the urban particulate matter consists of carbon compounds, which originate mostly f...

Journal: :Journal of the Air & Waste Management Association 2006
Mahmoud Abu-Allaban Safeia Hamasha Alan Gertler

Many areas in Jordan suffer from elevated levels of coarse particulate matter (PM10). One potentially significant source of the observed PM is the resuspension of road dust in the vicinity of limestone quarries. To obtain data to assess the impact from this source, PM10 road dust resuspension factors near Abusiiah, a town to the north east of Amman surrounded by many quarries and brick factorie...

Journal: :Environmental pollution 2011
A Arruti I Fernández-Olmo A Irabien

Air pollution by particulate matter is well linked with anthropogenic activities; the global economic crisis that broke out in the last year may be a proper indicator of this close relationship. Some economic indicators show the regional effects of the crisis on the Cantabria Region. The present work aims to evaluate the impact of the economic crisis on PM10 levels and composition at the major ...

Journal: :Applied and environmental microbiology 2003
Hans-Peter Grossart Thomas Kiørboe Kam Tang Helle Ploug

Marine particles in the ocean are exposed to diverse bacterial communities, and colonization and growth of attached bacteria are important processes in the degradation and transformation of the particles. In an earlier study, we showed that the initial colonization of model particles by individual bacterial strains isolated from marine aggregates was a function of attachment and detachment. In ...

Journal: :Environmental Health Perspectives 2002
Richard Dahl

Why are chemicals that have been banned for over a decade still being detected in the environment? How is it that chemicals and other pollutants such as particulate matter turn up hundreds or even thousands of miles from their sources? These are just two of the questions that a team of American and Canadian scientists hope will be answered using a model they have developed to track pollutants a...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Janine Fröhlich-Nowoisky Daniel A Pickersgill Viviane R Després Ulrich Pöschl

Fungal spores can account for large proportions of air particulate matter, and they may potentially influence the hydrological cycle and climate as nuclei for water droplets and ice crystals in clouds, fog, and precipitation. Moreover, some fungi are major pathogens and allergens. The diversity of airborne fungi is, however, not well-known. By DNA analysis we found pronounced differences in the...

Journal: :Environmental Health Perspectives 2000

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