| 南京青奥会期间不同天气条件下大气气溶胶中水溶性离子的分布特征 |
| 摘要点击 2587 全文点击 1093 投稿时间：2016-05-26 修订日期：2016-07-18 |
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| 中文关键词 青奥会 天气条件 水溶性离子 质量浓度 谱分布 |
| 英文关键词 Youth Olympic Games weather conditions water soluble ion mass concentration size distribution |
| 作者 | 单位 | E-mail | | 师远哲 | 南京信息工程大学, 气象灾害教育部重点实验室, 气候与环境变化国际合作联合实验室, 气象灾害预报预警与评估协同创新中心, 中国气象局气溶胶与云降水重点开放实验室, 南京 210044 | shiyuanzhesyz@163.com | | 安俊琳 | 南京信息工程大学, 气象灾害教育部重点实验室, 气候与环境变化国际合作联合实验室, 气象灾害预报预警与评估协同创新中心, 中国气象局气溶胶与云降水重点开放实验室, 南京 210044 | junlinan@nuist.edu.cn | | 王红磊 | 南京信息工程大学, 气象灾害教育部重点实验室, 气候与环境变化国际合作联合实验室, 气象灾害预报预警与评估协同创新中心, 中国气象局气溶胶与云降水重点开放实验室, 南京 210044 | | | 邹嘉南 | 南京信息工程大学, 气象灾害教育部重点实验室, 气候与环境变化国际合作联合实验室, 气象灾害预报预警与评估协同创新中心, 中国气象局气溶胶与云降水重点开放实验室, 南京 210044 | | | 王俊秀 | 南京信息工程大学, 气象灾害教育部重点实验室, 气候与环境变化国际合作联合实验室, 气象灾害预报预警与评估协同创新中心, 中国气象局气溶胶与云降水重点开放实验室, 南京 210044 | |
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| 中文摘要 |
| 为研究青奥会期间不同天气条件下水溶性离子粒径分布特征，使用β射线测尘仪、安德森9级采样器和IC型离子色谱分析仪对南京2014-08-06~2014-09-04的PM2.5、水溶性离子进行观测分析. 将观测期间划分为晴天、雨天和阴天这3种天气类型. PM2.5在不同天气条件下的平均浓度为晴天 > 阴天 > 雨天. PM1.1、PM1.1~2.1和PM2.1~10中水溶性离子的浓度均是晴天 > 阴天 > 雨天，且降雨过程对细粒子的去除作用更为明显. Ca2+和Mg2+谱分布类似，呈双峰分布，降雨对SO42-和NH4+在0.65~1.1 μm清除作用较强. 不同天气条件下NO3-/SO42-比值均小于1，雨天和阴天时的NO3-/SO42-值高于晴天. 3种天气条件下SOR和NOR的值均大于0.1，SO2和NO2发生不同程度的二次转化，大气中存在更多的二次颗粒物. |
| 英文摘要 |
| To study the variation characteristics of water soluble ions during youth Olympic Games, PM2.5 and water soluble ions were observed by using the beta dust instrument, Anderson 9th sampler and IC type ion chromatography analyzer from August 6 to September 4, 2014. The observations were divided into three types of weather, sunny, rainy and cloudy. The average concentrations of PM2.5 under different weather conditions were sunny > cloudy > rainy days. The concentrations of water soluble ions in PM1.1, PM1.1-2.1 and PM2.1-10 were also sunny > cloudy > rainy days, and the obliterate of fine particles by precipitation process was more obvious. The spectra of Ca2+ and Mg2+ were bimodal. The scavenging effects of SO42- and NH4+ in range of 0.65-1.1 μm were stronger. The ratio of NO3-/SO42- under different weather conditions was less than 1, and the ratio of NO3-/SO42- in rainy and cloudy days was higher than that in sunny days. The values of SOR and NOR in the three kinds of weather conditions were more than 0.1, SO2 and NO2 had different degrees of transformation, there was more secondary pollutant in the atmosphere. |
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