نتایج جستجو برای: air organic pollutions

تعداد نتایج: 400135  

Journal: :international journal of environmental research 2014
s. net d. dumoulin r. el-osmani s. rabodonirina b. ouddane

surface waters, especially natural rivers always act as receiving waters for various kinds oforganic contaminants from municipal and industrial wastewaters, agricultural activities, organic chemicals inuse, non-point source pollutions. due to their toxicity, persistency and wide diffusion, polychlorinatedbiphenyls (pcbs), pesticides, phthalates, polycyclic aromatic hydrocarbons (pah) and their ...

2015
Shou-Qin Sun Hui-Ying Cai Scott X. Chang Jagtar S. Bhatti

Effects of sample storage methods on the quantity and quality of labile soil organic carbon are not fully understood even though their effects on basic soil properties have been extensively studied. We studied the effects of air-drying and frozen storage on cold and hot water soluble organic carbon (WSOC). Cold- and hot-WSOC in air-dried and frozen-stored soils were linearly correlated with tho...

2010
Siti Zawiyah Azmi Mohd Talib Latif Aida Shafawati Ismail Liew Juneng Abdul Aziz Jemain

Over the last decades, the development of the Klang Valley (Malaysia), as an urban commercial and industrial area, has elevated the risk of atmospheric pollutions. There are several significant sources of air pollutants which vary depending on the background of the location they originate from. The aim of this study is to determine the trend and status of air quality and their correlation with ...

Journal: :پژوهش های جغرافیای طبیعی 0
علی پناهی استادیار گروه جغرافیا، واحد تبریز، دانشگاه آزاد اسلامی، تبریز، ایران

introduction air pollution as one of the most important technological risks of contemporary era is mainly resulted from the emergence of large cities and fast growing industries. one of the main objectives of climatic and environmental studies is to survey atmospheric pollutions. tabriz is one of the metropolises where air pollution is a problem in it. of course, what is essential regarding the...

Journal: :محیط شناسی 0
محمد پروین نیا استادیار، بخش مهندسی عمران و محیط زیست, دانشگاه یاسوج غلامرضا رخشنده رو دانشیار بخش عمران و محیط زیست,دانشکده مهندسی دانشگاه شیراز

moisture and air pollutions intensify metallic and nonmetallic surface corrosions. corroded surfaces exposed to rain washing cause pollution transportation in water and soil environment, especially in industrial areas. investigation of storm runoff quality in pars special economic energy zone (pseez) has shown heavy metals in storm basins of gas refineries and petrochemical industries.in this p...

ژورنال: طب کار 2014
امیری, زهره, جعفری, محمدجواد, حاج غلامی, محمدرضا, صالح پور, سوسن, طبرسی, پیام,

Background: Ventilation plays a crucial role in reducing the number of air transmitted pathogens in isolated rooms. Determination of the suitable type of ventilation system and the proper ventilating rate has always been a challenge. Patients’ bed arrangement and the location of the staff are also expected to influence the occupational exposure of the staffs’ to harmful airborne particles. The...

2010
G. C. Roberts D. A. Day L. M. Russell E. J. Dunlea J. L. Jimenez J. M. Tomlinson D. R. Collins A. D. Clarke

Measurements of cloud condensation nuclei (CCN), aerosol size distributions, and submicron aerosol composition were made as part of the Intercontinental Chemical Transport Experiment Phase B (INTEX-B) campaign during spring 2006. Measurements were conducted from an aircraft platform over the northeastern Pacific and western North America with a focus on how the transport and evolution of Asian ...

2011
Nicola Watson Stephen Davies David Wevill

As the harmful effects of low-level exposure to hazardous organic air pollutants become more evident, there is constant pressure to improve the detection limits of indoor and ambient air monitoring methods, for example, by collecting larger air volumes and by optimising the sensitivity of the analytical detector. However, at the other end of the scale, rapid industrialisation in the developing ...

2012
Wan-Yun Cheng James M. Samet Michael Chua Urmila Kodavanti Kenneth Sexton Tamara Tal

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