[Observational study of black carbon aerosol during straw-burning period].
Black carbon aerosol (BC) has been measured at three sites in Hefei City during May and June, 2007. Analyzing these real-time BC data, the concentration characters and the sources of black carbon aerosol can be found. The average concentrations of BC in normal period and straw-burning period are 4.85 microg/m3 and 8.38 microg/m3, respectively. The significant difference shows that the straw-burning is one of the main sources. The correlation coefficients between daily average concentration of BC and PM10 is 0.74, while the values of BC/PM10 in normal period and straw-burning period are 4.7% and 7.9%, respectively. Through comparing to the BC concentration during straw-burning period in 2004, the results indicated that pollution of BC has reduced after straw-burning was forbidden by the government.
Wu
De-xia
DX
Key Laboratory of Environmental Optics & Technology, Anhui Institute of Optics and Fine Machine, Chinese Academy of Sciences, Hefei 230031, China. robinwood@aiofm.ac.cn
Wei
Qing-nong
QN
Wei
Jian-li
JL
Liu
Shi-sheng
SS
Feng
Wei-wei
WW
D000336:Aerosols; D000397:Air Pollution / Q000032:analysis*; D002244:Carbon / Q000032:analysis*; D002681:China; D018556:Crops, Agricultural; D004784:Environmental Monitoring; D017745:Incineration; D012275:Oryza; D018547:Plant Stems / Q000737:chemistry; D012423:Rural Health; D014908:Triticum
D000336:Aerosols; D002244:Carbon