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| 焦作市大气中PM2.5的时间特征与潜在源区分析 |
| Temporal Characteristics and Potential Source Area of PM2.5 in Atmosphere in Jiaozuo |
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| DOI： |
| 中文关键词: PM2.5 时间特征 潜在源区 后向轨迹 焦作市 |
| 英文关键词: PM2.5 Temporal characteristic Potential source area Backward |
| 基金项目:国家自然科学基金资助项目（42177070）；河南省高校基本科研业务费专项资金资助项目（NSFRF210321）；河南理工大学博士基金资助项目（B2013-069） |
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| 中文摘要: |
| 以焦作市为研究区，基于2021年24 h自动监测大气PM2.5数据和同期气象数据，应用气团后向轨迹聚类分析、潜在源区贡献函数分析和浓度权重轨迹分析等方法探究大气污染物中PM2.5的时间分布特征及其潜在源区。结果表明：2021年焦作市PM2.5的质量浓度均值为47.3μg/m3，季节特征表现为春冬季高于夏秋季；来自河南省北部和中东部等地区气团轨迹对应的PM2.5浓度较高；春季和冬季PM2.5的潜在来源地区范围广于夏季和秋季，在污染较为严重的冬季，河南省的焦作市、新乡市、鹤壁市、安阳市、郑州市和开封市，以及河北省邯郸市和邢台市均是焦作市PM2.5的潜在源区。 |
| 英文摘要: |
| Taking Jiaozuo as the research area， based on 24 h automatic monitoring data of atmospheric PM2.5 and meteorological data in 2021， the temporal distribution characteristics and potential source areas of PM2.5 in atmospheric pollutants were explored using the analytical methods of air mass backward trajectory clustering， potential source contribution function and concentration weight trajectory. The results showed that the average annual mass concentration of PM2.5 in Jiaozuo in 2021 was 47.3 μg/m3， with the seasonal characteristics of higher in spring and winter than in summer and autumn. The PM2.5 concentrations corresponding to air mass trajectory from northern and central and eastern Henan was high. The scope of potential source areas of PM2.5 was wider in spring and winter than that in summer and autumn. In the winter when PM2.5 pollution was more serious， Jiaozuo， Xinxiang， Hebi, Anyang, Zhengzhou and Kaifeng in Henan， as well as Handan and Xingtai in Hebei were all potential source areas of PM2.5 in Jiaozuo. |
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