Pollution Characteristics of n-alkanes in Atmospheric Fine Particles During Spring Festival of 2007 in Beijing
2007年春节期间北京大气细粒子中正构烷烃的污染特征

Research PM_ 2.5 aerosols had been carried out with sampler of high-volume sampler during Spring Festival of 2007 in Beijing,and the concentrations of n-alkane in PM_ 2.5 samples were determined via GC-MS.The average concentrations of PM_ 2.5 which were all exceeded WHO threshold values were higher in the night than those in the day time.The n-alkane homolog from C_ 10 to C_ 33 were detected with the major peak carbon numbers ranging from 23 to 25.The total concentrations of n-alkane were higher in the nigh...