Results 271 to 280 of about 73,680 (311)

Selecting an Appropriate Multivariate Source Apportionment Model Result

Environmental Science & Technology, 2010
Two easily available multivariate source apportionment models, Unmix and positive matrix factorization (PMF), often produce nearly the same source apportionment. However, this paper gives two examples in which this is not the case: a simulated air pollution data set of 8 species and 200 samples and a water quality data set of 32 PCB congeners and 106 ...
Ronald C, Henry, Erik R, Christensen
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Source apportionment of PM2.5 in Beijing in 2004

Journal of Hazardous Materials, 2007
Based on measurements of fine particulate matter (PM2.5, i.e., particles with an aerodynamic diameter of 2.5 microm or less) in January and August 2004, serious air pollution persists in Beijing. The chemical analysis included organic and elemental carbon, water-soluble ions, and elemental compositions.
Yu, Song, Xiaoyan, Tang, Shaodong, Xie, Yuanhang, Zhang, Yongjie, Wei, Minsi, Zhang, Limin, Zeng, Sihua, Lu   +7 more
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Review of receptor modeling methods for source apportionment

Journal of the Air & Waste Management Association, 2016
Efforts 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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European source area apportionment

Journal of Aerosol Science, 1988
Erik Swietlicki, Birgitta Svantesson, Hans-Christen Hansson   +2 more
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Source apportionment in Veneto

2019
Lo 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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Dithiocarbamate Complexes as Single Source Precursors to Nanoscale Binary, Ternary and Quaternary Metal Sulfides

Chemical Reviews, 2021
, Graeme Hogarth
exaly  

General discussion: Multiphase atmospheric chemistry, and source apportionment

Faraday Discussions, 2021
Danah Alshammari, William Bloss, Ying Chen, Judith C. Chow, Shahzad Gani, Roy Harrison, Dawei Hu, Guo Li, Gordon McFiggans, Adam Milsom, Andrea M. Oyarzún Aravena, Christian Pfrang, Zongbo Shi, Deepchandra Srivastava, Peter Styring, Hang Su, John G. Watson, Jingsha Xu   +17 more
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Amazonia as a carbon source linked to deforestation and climate change

Nature, 2021
Luciana V Gatti, Luana S Basso, John B Miller   +2 more
exaly  

A bright and fast source of coherent single photons

Nature Nanotechnology, 2021
Natasha Tomm, Alisa Javadi, Nadia O Antoniadis   +2 more
exaly  

METHANE SOURCE APPORTIONMENT USING CLUMPED ISOTOPOLOGUES

The global atmospheric methane concentration continues to rise, exacerbating the greenhouse effect. This increase results from the rapid growth of methane source emissions that reflects an imbalance between sources and sinks. The development of methane clumped isotopologue (doubly-substituted methane molecules, 13CH3D and 12CH2D2) measurements provides
openaire   +1 more source