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- Jiang, Zhaohui; Zeng, Qingru; Tie, Boqing; Liao, Bohan; Pi, Hejie; Feng, Xiaoyou; Sun, Yulin
- Journal of environmental sciences (China) 2012 v.24 no.1 pp. 177-181
- alluvium; ammonia; clay; coatings; copper; hydrolysis; lakes; nitrogen; rivers; soil pH; soil treatment; soil types; urea; volatilization; zinc; China
- ... Ammonia volatilization and the distribution of Cu and Zn were investigated in two types of soil treated with coated and uncoated urea. The rate of ammonia volatilization in two weeks after fertilizing with coated urea was 8% in soil 1 (soil derived from river alluvial deposits in Dongting Lake Plain) and 5.15% in soil 2 (red soil derived from quaternary red clay), about half the rates observed whe ...
- Duan, Jingchun; Tan, Jihua; Wang, Shulan; Hao, Jimin; Chai, Fahe
- Journal of environmental sciences (China) 2012 v.24 no.1 pp. 87-94
- aerosols; aluminum; antimony; arsenic; barium; burning; cadmium; calcium; chromium; coal; cobalt; combustion; copper; gasoline; heat; heavy metals; iron; lead; magnesium; manganese; molybdenum; nickel; particulates; pollution; potassium; principal component analysis; selenium; sodium; strontium; summer; tin; toxicity; traffic; winter; zinc; zirconium; China
- ... Size distributions of 29 elements in aerosols collected at urban, rural and curbside sites in Beijing were studied. High levels of Mn, Ni, As, Cd and Pb indicate the pollution of toxic heavy metals cannot be neglected in Beijing. Principal component analysis (PCA) indicates 4 sources of combustion emission, crust related sources, traffic related sources and volatile species from coal combustion. T ...