CRDS Study of Tropospheric Ozone Production Kinetics :

• 발행기관: 한국환경보건학회
• 저자명: Ji-Ho Park
• 간행물 정보: 『한국환경보건학회지』제35권 제6호, 532~537쪽, 전체 6쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2009.12.30

영문 초록

The tropospheric ozone production mechanism for the gas phase additive oxidation reaction of hydroxyl radical (OH) with isoprene (2-methyl-1,3-butadiene) has been studied using cavity ring-down spectroscopy (CRDS) at total pressure of 50 Torr and 298 K. The applicability of CRDS was confirmed by monitoring the shorter (~4%) ringdown time in the presence of hydroxyl radical than the ring-down time without the photolysis of hydrogen peroxide. The reaction rate constant, (9.8±0.1)×10−11 molecule−1cm3s−1, for the addition of OH to isoprene is in good agreement with previous studies. In the presence of O2 and NO, hydroxyl radical cycling has been monitored and the simulation using the recommended elementary reaction rate constants as the basis to OH cycling curve gives reasonable fit to the data.

키워드

cavity ring-down spectroscopy ozone isoprene oxidation rate constant