Results 211 to 220 of about 10,644,205 (249)
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Source apportionment of fine particles in Kuwait City
Science of The Total Environment, 2013This study investigated major sources of PM2.5 in the atmosphere of Kuwait based on a sampling program conducted between February 2004 and October 2005. Three source identification techniques were used in this study: (1) a positive matrix factorization model; (2) backward trajectory profiles; and (3) concentration rose plots.
Mohammad A, Alolayan +4 more
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Source apportionment using reconstructed mass calculations
Journal of Environmental Science and Health, Part A, 2013A long-term study was undertaken to investigate the air quality of the Islamabad/Rawalpindi area. In this regard fine and coarse particulate matter were collected from 4 sites in the Islamabad/Rawalpindi region from 1998 to 2010 using Gent samplers and polycarbonate filters and analyzed for their elemental composition using the techniques of Neutron ...
Naila, Siddique, Shahida, Waheed
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Characteristics and source apportionment of PM2.5 in Jiaxing, China
Environmental Science and Pollution Research, 2019Herein we investigated the morphology, chemical characteristics, and source apportionment of fine particulate matter (PM2.5) samples collected from five sites in Jiaxing. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed that soot aggregates and coal-fired fly ash were generally the most abundant components in the ...
Zhipeng, Zhao +8 more
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Optimized variable source-profile approach for source apportionment
Atmospheric Environment, 2007Abstract An expanded chemical mass balance (CMB) approach for PM2.5 source apportionment is presented in which both the local source compositions and corresponding contributions are determined from ambient measurements and initial estimates of source compositions using a global-optimization mechanism.
Amit Marmur +2 more
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Review of receptor modeling methods for source apportionment
Journal of the Air & Waste Management Association, 2016Efforts have been made to relate measured concentrations of airborne constituents to their origins for more than 50 years. During this time interval, there have been developments in the measurement technology to gather highly time-resolved, detailed chemical compositional data.
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Source apportionment in Veneto
2019Lo studio indaga le principali componenti di natura chimica, l'acidità e le principali sorgenti di PM2.5 in 6 città del Veneto. La speciazione chimica (carbonio organico ed elementare, 9 ioni, 18 elementi e 8 IPA) è stata analizzata in campioni di PM2.5 raccolti contemporaneamente in 6 siti urbani (Aprile 2012-Febbraio 2013): Belluno (BL ...
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[Source Apportionment of Morphine in Wastewater].
Huan jing ke xue= Huanjing kexueIt is a new approach to identify legal or illegal use of morphine through information on municipal wastewater. However, the sources of morphine in wastewater are complex, and distinguishing the contribution of different sources has become a key issue. A total of 262 influent samples from 61 representative wastewater treatment plants in a typical city ...
Xue-Ting, Shao +6 more
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Source apportionment of VOCs based on photochemical loss in summer at a suburban site in Beijing
Atmospheric Environment, 2022Ya-Jun Wu +11 more
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Research Watch: Source apportionment
Environmental Science & Technology, 1999openaire +2 more sources