نتایج جستجو برای: dominant pollutants

تعداد نتایج: 157668  

2004
DOUGLAS HOUSTON JUN WU PAUL ONG ARTHUR WINER

Structural inequalities provide an important context for understanding and responding to the impact of high traffic densities on disadvantaged neighborhoods. Emerging atmospheric science and epidemiological research indicates hazardous vehicle-related pollutants (e.g., diesel exhaust) are highly concentrated near major roadways, and the prevalence of respiratory ailments and mortality are heigh...

Journal: :Industrial health 2011
Myeong-Deok Han Keun-Young Kim Seung-Cheol Hong

This study was performed to examine the potential health effects of copiers on their users and relevant workers by evaluating the charged aerosol current generation characteristics and indoor air quality (IAQ) in the copy center. In the 10 copy centers and one control site that were investigated in this study, the charged aerosol generation characteristics (effective levels, charged aerosol cur...

2012
K. Huang

The Chinese Spring Festival is one of the most important traditional festivals in China. The peak transport in the Spring Festival season (spring travel rush) provides a unique opportunity for investigating the impact of human activity on air quality in the Chinese megacities. Emission sources are varied and fluctuate greatly before, during and after the Festival. Increased vehicular emissions ...

Journal: :journal of rangeland science 2016
samar mortazavi alireza ieldromi parisa norozi fard

one of the most important methods to investigate heavy metals as pollutants is more likely to use bio-monitors which can be applied as an appropriate index to express the quality of environment. in current study, in order to investigate the effects of dominant plants in the desired region and role of aquatic macrophytes in monitoring such elements as zinc (zn), lead (pb), copper (cu) and cadmiu...

One of the most important methods to investigate heavy metals as pollutants is more likely to use bio-monitors which can be applied as an appropriate index to express the quality of environment. In current study, in order to investigate the effects of dominant plants in the desired region and role of aquatic macrophytes in monitoring such elements as zinc (Zn), lead (Pb), copper (Cu) and cadmiu...

Journal: :BioScience 2000

2017
Marcel Langner Thomas Draheim Wilfried Endlicher

Urban agglomerations are places of increased emissions of anthropogenic pollutants into the atmosphere. Since most of these pollutants are harmful to humans, reduction of their ambient concentrations is a major issue of environmental policy on international, national, and local levels. According to Wiederkehr and Yoon (1998), air pollutants can be grouped into major and trace or hazardous air p...

Journal: :محیط شناسی 0
علی اکبر شمسی پور دانشیار اقلیم شناسی، دانشکدۀ جغرافیا، دانشگاه تهران الهام اشرفی کارشناس ارشد مهندسی محیط زیست- ارزیابی و آمایش سرزمین، دانشگاه پیام نور، واحد تهران شرق مرضیه علیخواه اصل استادیار دانشگاه پیام نور، واحد پردیس خسرو اشرفی دانشیار گروه مهندسی محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران

introductionair pollution is the introduction of particulates, biological molecules, or other harmful materials into the earth's atmosphere, possibly causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment. the atmosphere is a complex natural gaseous system that is essential to support life on planet earth. stratospheric oz...

2009
Harlan K. Dean

Polychaetes are usually the most abundant taxon in benthic communities and have been most often utilized as indicator species of environmental conditions. This review finds that, while the use of indicator species for a particular pollutant is not simple, polychaetes can provide a useful means of assessing the effects of poor environmental conditions. Polychaetes may be used as sensitive monito...

1998

Ground level ozone, airborne particulates (TSP), carbon monoxide, volatile organic compounds (VOCs), nitrogen oxides and sulfur oxides and lead are all regulated and monitored closely by the EPA and are termed "criteria air pollutants." They are considered to be some of the most damaging pollutants because they are so prevalent. Their impacts have been studied extensively, and much benefit cost...

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