Abstract
Photochemical formation rates and sources of the hydroxyl (OH) radical were determined in dew water formed on the surface of Japanese red pine (Pinus densiflora) needles of declining (NO2 polluted area) and healthy pine stands at Mt. Gokurakuji located west of Hiroshima city in western Japan. The measured OH radical photoformation rates in dew water (n=10), which were normalized to the rate at midday on May 1 at 34°N, ranged from 0.67 to 5.18 µM h−1 (1M=1mol L−1). The mean value (2.69 µM h−1) was higher than that in dew water collected on a Teflon board and higher than the mean value in rain water published previously. Of the total OH radical formation rate observed in dew water on the pine needles, 16.4 % was estimated to originate from N (III) (NO2 − and HNO2) and 24.6 % was estimated to originate from NO3 −. There were other sources of OH radical photochemical formation in dew water on the pine needles besides photolysis of NO2 − and NO3 −.
Similar content being viewed by others
References
Arakaki, T., Miyake, T., Shibata, M. and Sakugawa, H.: 1998, Journal of the Chemical Society of Japan No.9, 619 (in Japanese with English summary).
Arakaki, T., Miyake, T., Shibata, M. and Sakugawa, H.: 1999, Journal of the Chemical Society of Japan No.5, 335 (in Japanese with English summary).
Arakaki, T., Miyake, T., Chiwa, M., Hirakawa, T., Shibata, M. and Sakugawa, H.: 2000, ‘Aqueous-phase photochemical formation of OH radical and nitrogen oxides', in Oxidants/Acidic Species and Forest Decline in East Asia, Japan Science and Technology Corporation, Higashi-Hiroshima, Japan. pp. 95–99.
Brimblecombe, P. and Todd, I. J.: 1977, Atmospheric Environment 11, 649.
Faust, B. C. and Allen, J. M.: 1993, Environmental Science and Technology 27, 1221.
Foster, J. R., Pribush, R. A. and Carter, B. H.: 1990, Atmospheric Environment 24A, 2229.
Hewitt, C. N., Kok, G. L. and Fall, R.: 1990, Nature 344, 56.
Kume, A., Tsuboi, N., Satomura, T., Suzuki, M., Chiwa, M., Nakane, K., Sakurai, N., Horikoshi, T. and Sakugawa, H.: 2000, Trees 14, 305.
Miyake, T.: 2000, Doctor of philosophy Dissertation, Hiroshima University, Higashi-Hiroshima, Japan.
Moller, D.: 1989, Atmospheric Environment 23, 1625.
Mopper, K. and Zhou, X.: 1990, Science 250, 661.
Mulawa, P. A., Cadle, S. H., Lipari, F., Ang, C. C. and Vandervennet, R. T.: 1986, Atmospheric Environment 20, 1389.
Naemura, A., Nakane, K., Sakugawa, H., Fukuoka, Y.: 1997, Environmental Sciences 10, 1 (in Japanese with English summary).
Naemura, A., Chiwa, M., Takeda, K., Nakane, K. and Sakugawa, H.: 2000, Japanese Journal of Biometeorology 37, 15 (in Japanese with English summary).
Okochi, H., Kajimoto, T., Arai, Y. and Igawa, M.: 1996, Bulletin of the Chemical Society of Japan 69, 3355.
Ortiz, V., Rubio, M. A. and Lissi, E. A.: 2000, Atmospheric Environment 34, 1139.
Pierson, W. R. and Brachaczek, W. W.: 1990, Aerosol Science and Technology 12, 8.
Seinfeld, J. H. and Pandis, S. N.: 1998, Atmospheric Chemistry and Physics, John Wiley and Sons, New York.
Takenaka, N., Suzue, T., Ohira, K., Morikawa, T., Bandow, H. and Maeda, Y.: 1999, Environmental and Science Technology 33, 1444.
Takeuchi, M., Okochi, H. and Igawa, M.: 2000, Journal of Japanese Society of Atmospheric Environment 35, 158 (in Japanese with English summary).
Wagner, G. H., Steele, K. F. and Peden, M. E.: 1992, Journal of Geophysical Research 97, 20591.
Zepp, R. G., Faust, B. C. and Hoigne, J.: 1992, Environmental Science and Technology 26, 313.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nakatani, N., Miyake, T., Chiwa, M. et al. Photochemical Formation of OH Radicals in Dew Formed on the Pine Needles at Mt. Gokurakuji. Water, Air, & Soil Pollution 130, 397–402 (2001). https://doi.org/10.1023/A:1013885201986
Issue Date:
DOI: https://doi.org/10.1023/A:1013885201986