Wang Yan, Peng Lin, Li Li-juan, Zhang Teng, Liu Hai-li, Mu Ling
Huan Jing Ke Xue. 2016 Jan 15;37(1):82-7.
In order to make effective plan to provide the scientific basis for prevention and control of re-suspended dust (RD), samples of particulate sources including RD and other pollution sources of Jincheng were collected. Elements, ions and carbon in particulate sources were analyzed. Enrichment factor, potential ecological risk assessment, and chemical mass balance model were used to analyze the chemical composition and the source of RD. The result indicated that the main components in RD of Jingeheng were Si, TC, Ca, OC, Al, Mg, Na, Fe, K and SO4(2-), contributing 61.14% of total mass of RD. The most abundant content of RD was crustal elements, and the ions were enriched in the fine particles. The mass fraction of OC in PM2. was higher, whereas the mass fraction of EC in PM10 was higher, indicating that secondary organic pollutants were mainly dominated in the fine particles. The dust PM2.5 and PM10 potential ecological risk indexes were extremely strong, and PM2.5 had higher ecological harm than PM10. Pb had the highest enrichment factor of 196.97 in PM2.5, which was followed by As, Cr, Ni, V, Zn and Cu, the enrichment factors of which were all greater than 10, indicating that they were apparently enriched and affected by human activities. Soil dust, construction dust, vehicle exhaust, and coal dust were the main sources of RD.
为制定有效的计划，为扬尘再悬浮（RD）的防治提供科学依据，采集了晋城市包括RD在内的颗粒物源及其他污染源的样本。对颗粒物源中的元素、离子和碳进行了分析。采用富集因子、潜在生态风险评估和化学质量平衡模型分析了RD的化学成分和来源。结果表明，晋恒街RD中的主要成分是Si、TC、Ca、OC、Al、Mg、Na、Fe、K和SO4(2-)，占RD总质量的61.14%。RD中含量最丰富的是地壳元素，离子在细颗粒中富集。PM2.中OC的质量分数较高，而PM10中EC的质量分数较高，表明细颗粒中主要以二次有机污染物为主。扬尘PM2.5和PM10的潜在生态风险指数极强，且PM2.5的生态危害高于PM10。PM2.5中Pb的富集因子最高，为196.97，其次是As、Cr、Ni、V、Zn和Cu，其富集因子均大于10，表明它们明显富集且受人类活动影响。土壤扬尘、建筑扬尘、汽车尾气和煤尘是RD的主要来源。
