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Evaluation of formation rates of NO_2 to gaseous and particulate nitrate in the urban atmosphere

机译：评价城市大气中NO_2对气态和颗粒态硝酸盐的形成速率

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This work investigates the formation rates of gaseous and particulate nitrate in an urban atmosphere. This investigation is based on theoretical evaluations regarding potential NO_2 oxidant reactions, leading to calculated values compared with field observations in Taichung City, Taiwan in 2002. The results show that the correlation coefficient (r) between the calculated value and field observation for HNO_3 was 0.83 and that for NO_3~- was 0.66, suggesting that the theoretical calculations are suitable for assessing the formation rate of nitrate species. The 12-h average conversion rate of NO_2 to HNO_3 was approximately 3.4 ± 3.1%h~(-1), while the formation rate of particulate NO_3~- was 2.4±1.8%h~(-1). Seasonal variations in gaseous and particulate production rates were obtained. The formation rate of HNO_3 was found to be higher in summer, whereas the NO_3~- rate was lowest. The factors affecting the formation rate were also investigated using the model sensitivity test. The results showed that both HNO_3 and NO_3~- were significantly dependent upon the ambient temperature and relative humidity in a moist atmosphere.
机译：这项工作调查了城市大气中气态和微粒硝酸盐的形成速率。该研究基于对潜在NO_2氧化剂反应的理论评估，得出的计算值与2002年台湾台中市的实测值相比。结果表明，HNO_3的计算值与实测值之间的相关系数（r）为0.83 NO_3〜-的值为0.66，表明理论计算适合评估硝酸盐类的形成速率。 NO_2向HNO_3的12h平均转化率约为3.4±3.1％h〜（-1），而颗粒NO_3〜-的生成速率为2.4±1.8％h〜（-1）。获得了气态和微粒生产率的季节性变化。夏季HNO_3的形成率较高，而NO_3〜-的形成率最低。还使用模型敏感性测试研究了影响形成速率的因素。结果表明，HNO_3和NO_3〜-均显着依赖于环境温度和潮湿环境中的相对湿度。

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