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Visualization of Artificially Deposited Submicron-sized Aerosol Particles on the Surfaces of Leaves and Needles in Trees

  • Yamane, Kenichi ;
  • Nakaba, Satoshi ;
  • Yamaguchi, Masahiro ;
  • Kuroda, Katsushi ;
  • Sano, Yuzou ;
  • Lenggoro, I. Wuled ;
  • Izuta, Takeshi ;
  • Funada, Ryo
  • Received : 2012.06.22
  • Accepted : 2012.10.18
  • Published : 2012.12.31

Abstract

To understand the effect of aerosols on the growth and physiological conditions of trees in forests, it is important to know the state of aerosols that are deposited on the surface of the leaves or needles. In this study, we developed methods of visualization of submicron-sized aerosols that were artificially deposited from the gas-phase or liquid phase onto tree leaves or needles in trees. Firstly, we used field-emission scanning electron microscopy (FE-SEM) to observe black carbon (BC) particles that were artificially sprayed onto the leaves or needles. The distribution of BC particles deposited on the leaves and needles were distinguished based on the size and morphological features of the particles. The distribution and agglomerates size of BC particles differed between two spraying methods of BC particles employed. Secondly, we tried to visualize gold (Au) particles that were artificially sprayed onto the leaves using energy dispersive X-ray spectrometry (EDX) coupled to FE-SEM. We detected the Au particles based on the characteristic X-ray spectrum, which was secondarily generated from the Au particles. In contrast to the case of BC particles, the Au particles did not form agglomerates and were uniformly distributed on the leaf surfaces. The present results show that our methods provide useful information of adsorption and/or behavior of fine particles at the submicron level on the surface of the leaves.

Keywords

Forest tree;Black carbon (BC) particle;Gold (Au) particle;Field-emission scanning electron microscopy (FE-SEM);Energy dispersive X-ray spectrometry (EDX)

References

  1. Bond, T.C., Streets, D.G., Yarber, K.F., Nelson, S.F., Woo, J.-H., Klimont, Z. (2004) A technology-based global inventory of black and organic carbon emissions from combustion. Journal of Geophysical Research Atmospheres 109, D14203. https://doi.org/10.1029/2003JD003697
  2. Burkhardt, J., Peters, K., Crossley, A. (1995) The presence of structural surface waxes on coniferous needles affects the pattern of dry deposition of fine particles. Journal of Experimental Botany 46, 823-831. https://doi.org/10.1093/jxb/46.7.823
  3. Coe, J., Lindberg, S. (1987) The Morphology and Size Distribution of Atmospheric Particles Deposited. Japcathe International Journal of Air Pollution Control and Hazardous Waste Management 37, 237-243.
  4. Farmer, A.M. (1993) The effect of dust on vegetation - a review. Environmental Pollution 79, 63-75. https://doi.org/10.1016/0269-7491(93)90179-R
  5. Fortmann, R.C., Johnson, D.L. (1984) Effect of simulated rainfall on removal and In situ formation of particles on Taxus needles. Environmental Pollution Series B, Chemical and Physical 7, 297-316. https://doi.org/10.1016/0143-148X(84)90044-2
  6. Krishnamurthy, K., Rajachidambaram, C. (1986) Factors associated with reduction in photosynthetic oxygen evolution in cement dust coated leaves. Photosynthetica 20, 164-168.
  7. Lenggoro, I.W., Xia, B., Okuyama, K. (2002) Sizing of colloidal nanoparticles by electrospray and differential mobility analyzer methods. Langmuir 18, 4584-4591. https://doi.org/10.1021/la015667t
  8. Li, J., Anderson, J.R., Buseck, P.R. (2003) TEM study of aerosol particles from clean and polluted marine boundary layers over the North Atlantic. Journal of Geophysical Research 108, ACH8.
  9. Naim, M.N., Abu Bakar, N.F., Iijima, M., Kamiya, H., Lenggoro, I.W. (2010) Electrostatic deposition of aerosol particles generated from an aqueous nanopowder suspension on a chemically treated substrate. Japanese Journal of Applied Physics 49, 06GH17.
  10. Neinhuis, C., Barthlott, W. (1998) Seasonal changes of leaf surface contamination in beech, oak, and ginkgo in relation to leaf micromorphology and wettability. New Phytologist 138, 91-98. https://doi.org/10.1046/j.1469-8137.1998.00882.x
  11. Wang, W.N., Purwanto, A., Lenggoro, I.W., Okuyama, K., Chang, H., Jang, H.D. (2008) Investigation on the correlations between droplet and particle size distribution in ultrasonic spray pyrolysis. Industrial & Engineering Chemistry Research 47, 1650-1659. https://doi.org/10.1021/ie070821d

Cited by

  1. Canopy, leaf surface structure and tree phenology: Arboreal factors influencing aerosol deposition in forests vol.71, pp.3, 2015, https://doi.org/10.2480/agrmet.D-14-00011
  2. Effect of epicuticular wax crystals on the localization of artificially deposited sub-micron carbon-based aerosols on needles of Cryptomeria japonica vol.129, pp.5, 2016, https://doi.org/10.1007/s10265-016-0839-7

Acknowledgement

Supported by : Japan Society for the Promotion of Science