Study on the road dust source profile of PM2.5 in Liaoning Province typical cities
ZHANG Wei1, JI Ya-qin1, ZHANG Jun2, ZHANG Lei1, WANG Wei3, WANG Shi-bao1
1. College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China;
2. Pan-Jin Environmental Monitoring Center, Panjin 124010, China;
3. An-Shan Environmental Monitoring Center, Anshan 114004, China
To establish the road dust source profiles of PM2.5 at typical cities of Liaoning, road dust samples were collected and analyzed for chemical compositions in Anshan and Panjin city. The main sources of road dust were identified by enrichment factor (EF) and ratio method. The similarity of the road dust profiles of Anshan and Panjin city was evaluated by coefficient of divergence (CD). The results showed that the main chemical compositions were organic carbon (OC) and crustal elements (Al, Ca, Mg, Fe and K). Except for Cu and V, the EF values for other elements in Anshan city were higher than those in Panjin city. The OC/EC values were (13.20±6.26) and (3.94±0.63) in Panjin and Anshan city, respectively, indicating the contribution from secondary organic carbon in Panjin and Anshan city; the NO3-/SO42-ratios were (0.52±0.55) and (0.46±0.13), implying that the effects of stationary source (coal combustion) on PM2.5 were more significant. The CD value is 0.354between Panjin and Anshan city, indicating that the two source profiles might be similar to some extent.
张伟, 姬亚芹, 张军, 张蕾, 王伟, 王士宝. 辽宁省典型城市道路尘PM2.5成分谱研究[J]. 中国环境科学, 2018, 38(2): 412-417.
ZHANG Wei, JI Ya-qin, ZHANG Jun, ZHANG Lei, WANG Wei, WANG Shi-bao. Study on the road dust source profile of PM2.5 in Liaoning Province typical cities. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(2): 412-417.
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