| 引用本文: | MA Yunyun,ZHENG Xueyan,WU Jianhui,XIAO Yang,ZHANG Yaohua,ZHANG Yang.Pollution Characteristics and Source Apportionment of PM2.5 and PM10 in Ambient Air of Weifang City[J].Environmental Monitoring and Forewarning,2023,15(5):147~155 |
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| 摘要: |
| 于2017年1月—2018年1月在潍坊市城区8个监测点位按季节采集了环境空气颗粒物样品，对其组分进行分析；采用电子低压冲击仪（ELPI）稀释采样法和稀释四通道法2种源采样方法同步采集源样品，建立了潍坊市本地化的燃煤源、钢铁源等排放源的颗粒物源成分谱；结合排放源清单，利用化学质量平衡受体模型（CMB）开展不同行业的细颗粒物（PM2.5）和可吸入颗粒物（PM10）的精细化来源解析。结果表明，各监测点位ρ（PM2.5）、ρ（PM10）年均值均超过环境空气质量二级标准；潍坊市城市扬尘、土壤风沙尘、建筑水泥尘特征组分分别为硅（Si）、Si、钙（Ca），燃煤尘和造纸碱回收尘的特征组分均为硫酸根离子（SO42-）；PM2.5首要的贡献源类为煤烟尘，分担率为36%；其次为机动车尘，分担率为25.4%；扬尘的分担率为21.8%；煤烟尘中分担率最高的是工业燃煤（18%）；机动车尘中以载货汽车分担率最大（14%）。PM10首要的贡献源类也是煤烟尘，分担率为30.9%，其次是扬尘（27.6%）、机动车尘（21.5%）；煤烟尘中分担率最高的是工业燃煤，为15.4%，机动车尘中以载货汽车分担率最大，为11.8%。工艺过程的分担率均较低。 |
| 关键词: 环境空气 细颗粒物 可吸入颗粒物 污染特征 源解析 |
| DOI：10.3969/j.issn.1674-6732.2023.05.022 |
| 分类号:X832；R123 |
| 基金项目:国家自然科学基金项目（21207069） |
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| Pollution Characteristics and Source Apportionment of PM2.5 and PM10 in Ambient Air of Weifang City |
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MA Yunyun1，ZHENG Xueyan2，WU Jianhui3*，XIAO Yang4，ZHANG Yaohua4，ZHANG Yang4
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1.Weifang Youte Testing Service Co.， Ltd.， Weifang， Shandong 261000， China; 2.Weifang Total Pollutant Discharge Control Center， Weifang， Shandong 261000， China; 3.State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control， College of Environmental Science and Engineering， Nankai University， Tianjin 300350， China; 4.Weifang Ecological Environment Monitoring Center， Weifang， Shandong 261041，China
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| Abstract: |
| From Jan 2017 to Jan 2018， samples of ambient air particulate matter were collected quarterly from 8 monitoring points dispersed in Weifang， and their components were analyzed. The emission source samples were collected simultaneously by two sampling methods， ELPI dilution sampling method and dilution four channel method， and the particulate matter source composition spectrum of emission sources such as coal combustion source and steel source localized in Weifang was established. Combined with the emission source inventory， the chemical mass balance receptor model(CMB) was used to analyze the fine source analysis of fine particulate matter(PM2.5) and respirable particulate matter(PM10) in different industries. The results show that the annual average values of ρ(PM2.5) and ρ (PM10) at each point during the sampling period exceeded the secondary standard limits of ambient air quality. The characteristic components of urban dust， soil wind dust and construction cement dust in Weifang were Si， Si and Ca， and the primary characteristic components of coal dust and paper alkali recovers dust sources were SO42-. The primary contributor to PM2.5 was coal soot， with a sharing rate of 36%; followed by motor vehicle dust， with a sharing rate of 25.4%; The share rate of dust was 21.8%; The highest share of soot is industrial coal， at 18%; Among motor vehicle dust，trucks share the most，at 14%. The primary contributor to PM10 was also soot with 30.9%，followed by fugitive dust(27.6%)， and motor vehicle dust sharing rate with 21.5%. The highest share of soot dust was industrial coal， at 15.4%，and the largest share of motor vehicle dust was borne by trucks， at 11.8%. The contribution of the process is relatively low. |
| Key words: Air PM2.5 PM10 Pollution characteristics Refined source apportionment |
