English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

PM2.5 samples were collected at a centrally located urban monitoringsite in Seoul, Korea, every third day from March 2003 to December 2006 andanalyzed for their chemical constituents. Sources were identified usingpositive matrix factorization (PMF). A total of 393 samples were obtainedduring the sampling period, and 20 chemical species were measured. NinePM2.5 source categories were identified providing physically realisticprofiles and interesting insights into the source contributions to theambient mass concentrations. The major contributors of PM2.5 weresecondary nitrate (20.9%), secondary sulfate (20.5%), gasoline-fueledvehicles (17.2%), and biomass burning (12.1%), with lessercontributions from diesel emissions (8.1%), soil (7.4%), industry(6.7%), road salt and two-stroke vehicles (5.1%), and aged sea salt(2.2%). PM2.5 levels in Seoul were influenced by both local urbanactivities and regional-scale transport. Conditional probability function(CPF) results identified possible source directions of local sources such asmotor vehicles (gasoline and diesel), industry, and road salt. Potentialsource contribution function (PSCF) results showed that possible sourceareas contributing to the elevated secondary particle concentrations(sulfate and nitrate) in Seoul to be the major industrial areas in China

Source apportionment of PM&lt;sub&gt;2.5&lt;/sub&gt; in Seoul, Korea

Source apportionment of PM<sub>2.5</sub> in Seoul, Korea