Diurnal changes of singlet oxygen like oxidants concentration in polluted ambient air
Abstract The long-term measurement of singlet oxygen like oxydants (SOLO) in polluted ambient air by use of the chemical determination method with α-terpinene (Ter) as a substrate was carried out. α-Terpinene endoperoxide, ascaridole (Asc), was produced by the reaction of SOLO with Ter in a similar manner to singlet oxygens ( 1 O 2 ). Asc formed was analyzed by gas chromatography-mass fragmentgraphy with selected ion monitoring mode.The concentration of SOLO in sample air was calculated from the amount of Asc determined, and expressed as O 2 in active state. The concentration of 4 – 21 ppb of SOLO was detected in the daytime, and it reached to the maximum at around noon. SOLO were also detected in the nighttime and its concentration reached to the maximum at around midnight. The pattern of diurnal change of SOLO concentration was apparently different from that of photochemical oxidants including ozone, but identical with that of NOx. SOLO are not conventional photochemical oxidants such as ozone, but must be α-terpinene endoperoxide producible oxydants having similar reactivity to 1 O 2 and probably including 1 O 2 themselves.
유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.
NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.
- 이 논문과 함께 출판된 논문 + 더보기