청정지역과 도시지역에서 NO2 광분해율이 오존농도에 미치는 영향에 관한 연구

• 영문명: A Study on Effect of NO2 Photodissociation rate on Ozone concentration from Rural and Urban Area in the Winter
• 발행기관: 한국환경보건학회
• 저자명: 이정주 이동범 윤중섭
• 간행물 정보: 『한국환경보건학회지』제26권 제4호, 141~147쪽, 전체 7쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2000.12.30

영문 초록

Due to a rapid in automobiles since the 1980’s, the concentration of NO, and HC has also increased along with cases of VOCs. These air pollutants have created O3 concentration, which cause a harmful effect to the human health. This issue has become a subject of great public interest. For this paper, to compare the concentration of O3, NO, NO2 between the rural and urban area in the winter, the concentrations of each have been measuredevery hour during Jan.~Feb. 2000, 1998, respectively. To calculate the Photochemical Steady State, ф= JNC2[NO2]/ K1[NO][O3], temperature and JNC2 has been determined. The NO concentration in the rural are showed at below 10 ppb while the NO concentration in the urban area showed maximum value of 90~120 ppb. But the O3 concentration in both areas showed less than 30 ppb. The reason is that the NO2 photodissiciation rate is low due to the temperature being below 2°C and less than 60 degrees in the solar zenith angle during the winter time, which makes the O3 concentration in both areas, similar in the concentration level. NO2 photodissociation rate in both ares showed maximum value of 3.0mW/cm2. Values of ф determined from the rural area was consistently the unity, approaching 1. But values of ф determined from the urban was roughly higher than unity, approaching above 1or 2 for clear sky-high sun(10:00~16:00).

키워드

O3 NO NO2 NO2 Photodissociation Photochmical Steady State