Wang Hong-lei, Zhu Bin, An Jun-lin, Duan Qing, Zou Jia-nan, Shen Li-juan
Huan Jing Ke Xue. 2014 Sep;35(9):3271-9.
Aerosol samples were collected by an Andersen cascade impactor (Andersen) in Nanjing during the Asian Youth Games (AYG), and organic carbon (OC) and elemental carbon (EC) in particles were determined by DRI Model 2001A carbon analyzer of USA. Observations indicated that OC (51.55%) and EC (54. 81%) were enriched in the fine aerosol particles with size below 1. 1 μm, the highest mass concentrations of OC and EC were located at 0-0.43 μm and 0.43-0.65 μm, respectively, accounting for 20. 90% ±5.02% and 22. 68% ±9.90% of the total concentration. The mass concentrations of OC and EC in PM1.1, PM1.1-2.1 and PM(2.1-10) during AYG period were decreased by 43. 44% -56. 17% and 59. 17% -73.55% as compared to the values before AYG. The spectral distribution of OC was bimodal during the whole observation period, while the spectrum distribution of EC was changed from bimodal to unimodal. OC and EC during the observation period were in good homology. OC and EC were attributed to automobile exhaust fumes before AYG. During AYG, OC and EC in PM1.1 were mostly from automobile exhaust fumes, while OC and EC in PM1.1-2.1 and PM2.1-10 were from automobile exhaust fumes and coal combustion.
在亚洲青年运动会（AYG）期间，于南京使用安德森级联撞击器（Andersen）采集气溶胶样本，并通过美国DRI 2001A型碳分析仪测定颗粒中的有机碳（OC）和元素碳（EC）。观测结果表明，OC（51.55%）和EC（54.81%）在粒径小于1.1μm的细气溶胶颗粒中富集，OC和EC的最高质量浓度分别位于0 - 0.43μm和0.43 - 0.65μm，分别占总浓度的20.90%±5.02%和22.68%±9.90%。与AYG之前的值相比，AYG期间PM1.1、PM1.1 - 2.1和PM（2.1 - 10）中OC和EC的质量浓度分别下降了43.44% - 56.17%和59.17% - 73.55%。在整个观测期内，OC的光谱分布呈双峰型，而EC的光谱分布从双峰型变为单峰型。观测期内OC和EC具有良好的同源性。AYG之前，OC和EC归因于汽车尾气。在AYG期间，PM1.1中的OC和EC主要来自汽车尾气，而PM1.1 - 2.1和PM2.1 - 10中的OC和EC来自汽车尾气和煤炭燃烧。
