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Atmospheric chemical property in Northwest China
CTR :243
Key words TC OC EC
Relevant data none
Data shows that
The database includes TC, OC, EC from Yulin Station (2003.08-2006.01), Xi’an Station (2004.10-2005.08), Jinchang Station (2003.08-2006.01). OC/EC was analyzed with the method of IMPROVE by DRI Model 2001 Thermal/Optical Carbon Analyzer. The principle of IMPROVE: under the circumstance of pure He, filter membrane with the square of 0.526cm2 was heated and carbon was into CO2 at 120°,250°,450° respectively. Then under the He circumstance with 2% O2 , samples were gradually heated at 550℃(EC1),700℃(EC2)and 800℃(EC3). Element C was released. CO2 was catalyzed by MnO2 into CH4 under the reducing encironment.
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Related data
Sanmenxia loess - paleoso
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