지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
In this study, ozone (O₃) samples were prepared for investigating the heterogeneous reactions between O₃ and tropospheric aerosols and were characterized by spectroscopic methods. O₃ generated from an ozone generator was purified by selective adsorption on refrigerated silica gel, followed by transfer to a sample bulb. The amount of UV light (λ = 256 nm) absorbed by O₃ was measured as a function of time at two different temperatures (room temperature and 50 °C) and under different irradiation conditions. A correlation plot of 1/[O₃] versus time showed that O₃ decomposition follows the 2<SUP>nd</SUP> order reaction rate under a steady-state approximation. The initial concentration of O₃, observed rate constants (k<SUB>obs</SUB>), and the half-life of O₃ in the sample stored at room temperature were determined to be 2.74 [±0.14] × 10<SUP>16</SUP> molecules·cm<SUP>−3</SUP>, 4.47 [±0.64] × 10<SUP>−23</SUP> molecules<SUP>−1</SUP>·cm³·s<SUP>−1</SUP>, and 9.5 [±1.4] days, respectively. The evaluation of O₃ stability under various conditions indicated that special care should be taken to prevent the exposure of the O₃ samples to high-temperature environment and/or UV radiation. This study established a protocol for the preparation of highly purified O₃ samples and confirmed that the O₃ samples can be stored for a day after preparation for further experiments.
목차
Abstract
1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References
참고문헌 (13)
참고문헌 신청
J. H. Seinfeld and S. N. Pandis, ‘Atmospheric Chemistry and Physics: from Air Pollution to Climate Change’, 4th Ed., Wiley, New York, 1997.
L. A. George, T. M. Hard and R. J. O’Brien, J. Geophys. Res. Atmosphere, 104, 11643-11655 (1999).
B. J. Finlayson-Pits and J. J. N. Pits, ‘Chemistry of the upper and lower atmosphere’, 1st Ed., Academic Press, San Diego, 2000.
G. C. Morrison and C. J. Howard, Int. J. Mass Spectrom. Ion Processes, 201, 503-509 (2001).
T. L. Eliason, J. B. Gilman and V. Vaida, Atmos. Environ., 38, 1367-1378 (2004).
L. A. George, T. M. Hard and R. J. O’Brien, J. Geophys. Res. Atmosphere, 104, 11643-11655 (1999).
B. J. Finlayson-Pits and J. J. N. Pits, ‘Chemistry of the upper and lower atmosphere’, 1st Ed., Academic Press, San Diego, 2000.
G. C. Morrison and C. J. Howard, Int. J. Mass Spectrom. Ion Processes, 201, 503-509 (2001).
T. L. Eliason, J. B. Gilman and V. Vaida, Atmos. Environ., 38, 1367-1378 (2004).
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