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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Parahalogenated phenols accelerate the photochemical release of nitrogen oxides from frozen solutions containing nitrate
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Parahalogenated phenols accelerate the photochemical release of nitrogen oxides from frozen solutions containing nitrate

机译：对卤代酚可加速光化学从含硝酸盐的冷冻溶液中释放氮氧化物

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摘要

The photolysis of nitrate anion (NO _3 ~-) contained in surface ice and snow can be a regionally significant source of gas-phase nitrogen oxides and affect the composition of the planetary boundary layer. In this study, the photochemical release of nitrogen oxides from frozen solutions containing NO _3 ~- in the presence of organic compounds was investigated. Gas-phase nitrogen oxides were quantified primarily by NO-O _3 chemiluminescence detection of NO and NO _y (=NO + NO _2 + HONO + HNO _3 + -PAN + -AN...) and cavity ring-down spectroscopy of NO _2 and total alkyl nitrates (-AN). The photochemical production of gas-phase NO _y was suppressed by the presence of formate, methanesulfonate, toluene, or phenol. In contrast, para-halogenated phenols (in the order of Cl > Br > F) promoted the conversion of NO _3 - to gas-phase NO _y, rationalized by acidification of the ice surface.
机译：冰和雪中所含硝酸根阴离子（NO_3〜-）的光解可能是气相氮氧化物的区域重要来源，并影响行星边界层的组成。在这项研究中，研究了在有机化合物存在下，从含有NO_3〜-的冷冻溶液中氮氧化物的光化学释放。主要通过NO-O _3化学发光检测NO和NO _y（= NO + NO _2 + HONO + HNO _3 + -PAN + -AN ...）和NO _2的腔衰荡光谱对气相氮氧化物进行定量和总烷基硝酸盐（-AN）。甲酸，甲磺酸盐，甲苯或苯酚的存在抑制了气相NO _y的光化学产生。相反，对位卤代苯酚（按Cl> Br> F的顺序）促进了NO 3-向气相NO y的转化，并通过冰面酸化使其合理化。

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