| 台州市区PM2.5和O3污染特征及相互作用关系 |
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| 引用本文： | 何微娜,李欣,谢松青,杨小涛,陶志华.台州市区PM2.5和O3污染特征及相互作用关系[J].中国环境监测,2023,39(1):60-68. |
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| 作者姓名： | 何微娜 李欣 谢松青 杨小涛 陶志华 |
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| 作者单位： | 浙江省台州生态环境监测中心, 浙江 台州 318000;浙江省金华生态环境监测中心, 浙江 金华 321000 |
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| 摘 要： | 基于2016—2020年台州市区大气污染物监测数据及气象观测资料，分析了台州市区PM2.5和O3的污染特征及受气象因素影响情况，并探究了不同季节下的PM2.5浓度和O3浓度的相关性及相互作用关系。2016—2020年，台州市区PM2.5年均浓度和超标天数呈显著下降趋势，O3-8 h年均浓度和超标天数总体呈上升趋势。PM2.5浓度在冬季最高，且易发生超标；O3浓度在春、夏、秋季均较高，且均会发生超标。通过相关性分析可知：PM2.5浓度与气温、相对湿度、风速、降水量呈负相关，与大气压呈正相关；O3浓度与气温、风速呈正相关，与相对湿度、降水量呈负相关。不同季节下的PM2.5浓度与O3浓度均呈正相关，两者存在协同增长。在春、夏、秋季，二次PM2.5在总PM2.5中的占比随着O3
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| 关 键 词： | PM2.5 O3 相互影响 台州 |
| 收稿时间： | 2021/9/23 0:00:00 |
| 修稿时间： | 2022/2/24 0:00:00 |
Characteristics PM2.5 and O3 Pollution and Their Interaction in Taizhou Urban Area |
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| HE Wein,LI Xin,XIE Songqing,YANG Xiaotao,TAO Zhihua.Characteristics PM2.5 and O3 Pollution and Their Interaction in Taizhou Urban Area[J].Environmental Monitoring in China,2023,39(1):60-68. |
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| Authors: | HE Wein LI Xin XIE Songqing YANG Xiaotao TAO Zhihua |
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| Institution: | Taizhou Eco-Environmental Monitoring Center of Zhejiang Province, Taizhou 318000, China;Jinhua Eco-Environmental Monitoring Center of Zhejiang Province, Jinhua 321000, China |
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| Abstract: | Based on the air pollutant monitoring data and meteorological observation data of Taizhou urban area from 2016 to 2020,the pollution characteristics of PM2.5 and O3 and the influence of meteorological factors were analyzed,and the correlation and interaction between PM2.5 and O3 in different seasons were further analyzed.The results showed that the annual average concentration and the number of days with PM2.5 exceeding the standard of PM2.5 presented a downward trend from 2016 to 2020,while the annual average concentration and the number of days with O3-8 h exceeding the standard of O3-8 h showed an upward trend.PM2.5 pollution occurred easily in winter and O3 pollution occurred in spring,summer and autumn.The PM2.5 concentration showed negative correlation with temperature,relative humidity,windspeed and rainfall,while it showed positive correlation with atmospheric pressure.The O3 concentration showed a positive correlation with temperature and windspeed,while it showed a negative correlation with relative humidity and rainfall.The PM2.5 and O3 concentration were positively correlated in different seasons and had synergistic growth.The oxidation was strong in spring,summer and autumn,and the oxidation effectively promoted secondary particle formation.As the photochemical level increased,the contribution rate of secondary PM2.5 contributed increased. |
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| Keywords: | PM2 5 O3 interaction mechanism Taizhou |
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