厦门市港区空气质量污染特征研究

Characteristics of Air Quality Pollution in Xiamen Port Area

通过分析2019—2021年厦门市港区六项常规空气质量指标的浓度,研究了厦门市港区空气质量的污染特征。结果表明,NO_(2)、PM_(10)和PM_(2.5)浓度高于主城区,SO_(2)、CO和O_(3)浓度低于主城区。NO_(2)浓度呈逐年下降趋势,污染程度呈冬季较高、春季次之、秋季和夏季较低的特征;SO_(2)浓度稳定处于较低水平,污染程度较轻,1月份浓度最高,2月份浓度最低;CO浓度呈逐年下降趋势,春冬季浓度相对较高,夏秋季浓度较低;O_(3)浓度呈波动上升趋势,污染程度呈春秋季高、夏冬季低的特征;颗粒物(PM_(10)和PM_(2.5))浓度呈下降趋势,春冬季污染程度较高、秋季次之、夏季较低。

By analyzing the concentrations of six conventional air quality indicators in Xiamen port area from 2019 to 2021,the pollution characteristics of air quality in Xiamen port area are studied.The results showed that the concentrations of NO_(2),PM_(10) and PM_(2.5) were higher than those in the main urban area,while the concentrations of SO_(2),CO and O_(3) were lower than those in the main urban area.The concentration of NO_(2) decreased year by year,and the pollution degree was higher in winter,followed by spring,and lower in autumn and summer;The SO_(2) concentration is stable at a low level and the pollution degree is relatively low.The concentration is the highest in January and the lowest in February.The CO concentration is decreasing year by year.The CO concentration is relatively high in spring and winter,and low in summer and autumn.The concentration of O_(3) fluctuated and increased,and the pollution level was high in spring and autumn,and low in summer and winter.The concentration of particulate matter(PM_(10) and PM_(2.5))showed a downward trend.The pollution degree was higher in spring and winter,followed by autumn,and lower in summer.