نتایج جستجو برای: elemental carbon

تعداد نتایج: 299121  

Journal: :journal of advances in environmental health research 0
zohreh khodaei dietary supplements and probiotic research center and department of biochemistry, genetic, and nutrition, alborz university of medical sciences, karaj, iran mahbobeh mehrabani dietary supplements and probiotic research center and department of biochemistry, genetic, and nutrition, alborz university of medical sciences, karaj, iran enayatollah kalantar department of microbiology and immunology, alborz university of medical sciences, karaj, iran parisa darabi dietary supplements and probiotic research center alborz university of medical sciences, karaj, iran afshin maleki environmental health research center, kurdistan university of medical sciences, sanandaj, iran

in the present study, carbon species including organic carbon (oc), elemental carbon (ec), and water-soluble organic carbon (wsoc) concentration in pm2.5 were assessed at an urban site of tehran, iran during march to june 2014. the pm2.5 samples were collected using an frmomnitm ambient air sampler. thermal gravimetric analysis (tga) was used to analyze oc and ec. the results showed that pm2.5 ...

2009
L. K. Sahu Y. Kondo N. Takegawa S. Han J. S. Jung Y. J. Kim S. Fan N. Sugimoto M. H. Shammaa Y. H. Zhang

R. L. Verma, L. K. Sahu, Y. Kondo, N. Takegawa, S. Han, J. S. Jung, Y. J. Kim, S. Fan, N. Sugimoto, M. H. Shammaa, Y. H. Zhang, and Y. Zhao Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan Advanced Environmental Monitoring Research Center, Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Repub...

2002
G. J. KEELER

-Aerosol elemental carbon measurements were taken at two rural sites in southwestern Pennsylvania during August 1983. Carbon, though a small part of the aerosol mass at both sites, was a leading constituent of the aerosol on an atom basis. Time-weighted average concentrations at Allegheny Mountain and Laurel Hill were 1.2 and 1.4 #g m-3, respectively. Absolute Principal Component Analysis follo...

Journal: :The European respiratory journal 2011
A Barraza-Villarreal M C Escamilla-Nuñez L Hernández-Cadena J L Texcalac-Sangrador J J Sienra-Monge B E Del Río-Navarro M Cortez-Lugo P D Sly I Romieu

Though exposure to air pollution has a detrimental effect on respiratory health, few studies have examined the association between elemental carbon exposure and lung function among schoolchildren. The aim of the present study was to present the association between short-term elemental carbon exposure and lung function in schoolchildren from Mexico City. 55 asthmatic and 40 non-asthmatic childre...

2014
James A. Forder

This article describes a performance assessment of three optical methods, a Magee Scientific OT21 Transmissometer, a Hach-Lange Microcolor II difference gloss meter, and a combination of an office scanner with Adobe Photoshop software. The optical methods measure filter staining as a proxy for elemental carbon in diesel exhaust particulate (DEP) exposure assessment and the suitability of each a...

Ali Asghar Alamolhoda Hossein Arfaeinia Majid Kermani, Seyed Enayat Hashemi

In the present study, carbon species including organic carbon (OC), elemental carbon (EC), and water-soluble organic carbon (WSOC) concentration in PM2.5 were assessed at an urban site of Tehran, Iran during March to June 2014. The PM2.5 samples were collected using an frmOMNITM Ambient Air Sampler. Thermal gravimetric analysis (TGA) was used to analyze OC and EC. The results showed that PM2.5 ...

In the present study, carbon species including organic carbon (OC), elemental carbon (EC), and water-soluble organic carbon (WSOC) concentration in PM2.5 were assessed at an urban site of Tehran, Iran during March to June 2014. The PM2.5 samples were collected using an frmOMNITM Ambient Air Sampler. Thermal gravimetric analysis (TGA) was used to analyze OC and EC. The results showed that PM2.5 ...

Journal: :The Annals of occupational hygiene 2000
J Groves J R Cain

Forty sites were visited during a survey of exposures to diesel engine exhaust emissions. Personal and background exposure to gaseous components, respirable dust, elemental carbon, organic carbon and total carbon were measured and details of control systems were recorded. The results show a wide spread in exposure patterns reflecting the different work practices, job categories of employees and...

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