Abstract
Total suspended particulate (TSP) samples were collected at three sites along the coast of Qingdao, China, before and during a major dust storm in March, 2002. For comparison, PM10 (particulate matter with aerodynamic diameters less than 10 μm) samples were collected at one of the three sites. The morphological observation and compositional analysis of bulk and individual particles were performed by using scanning electron microscopy equipped with an energy dispersive X-ray system (SEM/EDX) for the TSP and PM10 samples. The results showed that the particles of different kinds of morphology had different elemental compositions, but the particles of similar morphology did not always have the same elemental composition for non-dust samples. The morphology and composition of non-dust particles were different at different sites. The fractal and spherical particles existed mainly in the coarse fraction for non-dust samples, while in the fine mode (<10 μm) there were floccules formed by fine particles flocking together and containing crustal elements. Compared with the non-dust particles, the dust particles were more homogeneous in terms of morphology, particle size and composition. Particles with irregular shapes and well-distributed sizes dominated in the dust samples, containing crustal elements such as Mg, Al, Si, Ca, Fe,etc. The high sulfur content indicated that homogeneous and heterogeneous reactions took place on the surfaces of the dust particles in the specific environment of Qingdao.
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References
Heseung, Y., and M. L. Jackson, 1952. Mineral composition of the clay fraction of some main soil groups of China.Soil. Sci. Soc. Amer. Proc.,16: 97–110.
Hoffmannm, M. R., 1986. On the kinetics and mechanism of oxidation of aquated sulfur dioxide by ozone.Atmos. Environ.,20: 1145–1154.
Qi, J. H., M. P. Zhang, L. J. Feng, and X. G. Li, 2003. An EXAFS study on the local structure around iron in atmospheric aerosols collected in Qingdao area.Molecules,8: 31–39.
Quan, H., 1993. The study on the sand-dust storms in Northwest China region and the high-altitude transportation path of the Kosa aerosols.Chin. J. Environ. Sci.,34 (5): 60–64.
Tanaka, S., M. Tajima, and Y. Hashimoto, 1986. X-ray fluorescence analysis for major and trace elements in soils of Takla Makan Desert and Japan.X-ray Chem. Anal. Jpn.,17: 253–264.
Wang, A. P., S. H. Yang, and Y. Sha, 1996. Chemical characterization of individual aerosol particles in Beijing.Environ. Chem.,15(6): 488–495.
Xu, X. H., and J. L. Li, 1998. Calculation of sulphur transmission flux in Qingdao district.Chin. Environ. Sci.,18(3): 193–196.
Zhang, D. Z. C. S. Zhao, and Y. Qin, 1998. Composition and morphology analyses of dust particles.Acta Scientiae Circumstantiae,18 (5): 449–456.
Zhuang, G. S., Z. Yi, R. A. Duce, and P. R. Brown, 1992. Link between iron and sulfur suggested by the detection of Fe(II) in remote marine aerosols.Nature,355: 537–539.
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Jianhua, Q., Xianguo, L., Lijuan, F. et al. Characterization of dust and non-dust aerosols with SEM/EDX. J. Ocean Univ. China 5, 85–90 (2006). https://doi.org/10.1007/BF02919381
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DOI: https://doi.org/10.1007/BF02919381