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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Nitrate Radical Quantum Yield from Peroxyacetyl Nitrate Photolysis
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Nitrate Radical Quantum Yield from Peroxyacetyl Nitrate Photolysis

机译：过氧乙酰硝酸盐光解的硝酸根自由基量子产率

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摘要

Peroxyacetyl nitrate (PAN,CH_3C(O)OONO_2) is a ubiquitous pollutant that is primarily destroyed by either thermal or photochemical mechanisms.We have investigated the photochemical destruction of PAN using a combination of laser pulsed photolysis and cavity ring-down spectroscopic detection of the NO_3 photoproduct.We find that the nitrate radical quantum yield from the 289 nm photolysis of PAN is PHI_(NO_3)~(PAN)=0.31+-0.08 (+-2sigma).The quantum yield is determined relative to that of dinitrogen pentoxide,which is assumed to be unity,under identical experimental conditions.The instrument design and experimental procedure are discussed as well as auxiliary experiments performed to further characterize the performance of the optical cavity and photolysis system.
机译：过氧乙酰硝酸盐（PAN，CH_3C（O）OONO_2）是一种普遍存在的污染物，主要通过热或光化学机理被破坏。我们结合激光脉冲光解和腔衰荡光谱检测技术研究了PAN的光化学破坏NO_3光产物。我们发现PAN的289 nm光解中的硝酸根自由基量子产率为PHI_（NO_3）〜（PAN）= 0.31 + -0.08（+ -2sigma）。相对于五氧化二氮，确定了量子产率。讨论了仪器设计和实验步骤，并进行了辅助实验以进一步表征光腔和光解系统的性能。

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