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常州春季PM2.5的氧化潜势及其来源解析

吴一昊 崔尧嘉 臧鑫芝 王文强 叶招莲

吴一昊, 崔尧嘉, 臧鑫芝, 王文强, 叶招莲. 常州春季PM2.5的氧化潜势及其来源解析[J]. 环境工程, 2024, 42(5): 53-61. doi: 10.13205/j.hjgc.202405007
引用本文: 吴一昊, 崔尧嘉, 臧鑫芝, 王文强, 叶招莲. 常州春季PM2.5的氧化潜势及其来源解析[J]. 环境工程, 2024, 42(5): 53-61. doi: 10.13205/j.hjgc.202405007
WU Yihao, CUI Yaojia, ZANG Xinzhi, WANG Wenqiang, YE Zhaolian. OXIDATIVE POTENTIAL AND SOURCE APPORTIONMENT OF PM2.5 DURING SPRING IN CHANGZHOU[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 53-61. doi: 10.13205/j.hjgc.202405007
Citation: WU Yihao, CUI Yaojia, ZANG Xinzhi, WANG Wenqiang, YE Zhaolian. OXIDATIVE POTENTIAL AND SOURCE APPORTIONMENT OF PM2.5 DURING SPRING IN CHANGZHOU[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(5): 53-61. doi: 10.13205/j.hjgc.202405007

常州春季PM2.5的氧化潜势及其来源解析

doi: 10.13205/j.hjgc.202405007
基金项目: 

常州重点实验室项目(CM20223017)

江苏省自然科学基金项目(BK20221405)

江苏理工学院研究生实践创新计划(XSJCX23_82)

江苏省研究生实践创新计划(SJCX21_1332)

详细信息
    作者简介:

    吴一昊(2000-),男,硕士,主要研究方向为环境污染控制。1048025322@qq.com

    通讯作者:

    叶招莲(1978-),女,教授,主要研究方向为大气中颗粒物组分分析及源解析、大气液相氧化机制研究以及工业VOCs气体治理新材料与新技术开发。bess_ye@jsut.edu.cn

OXIDATIVE POTENTIAL AND SOURCE APPORTIONMENT OF PM2.5 DURING SPRING IN CHANGZHOU

  • 摘要: 为探究细颗粒物(PM2.5)的健康风险及其来源,采用二硫苏糖醇(DTT)法测定了常州春季PM2.5的氧化潜势(OP),用DTTv(体积归一化的DTT)和DTTm(质量归一化的DTT)表征。采用正定矩阵因子分解法(PMF)、主成分分析(PCA)联合多元线性回归(MLR)2种方法解析了DTTv的来源。结果表明:采样期间大气PM2.5的DTTv和DTTm日平均值分别为(0.83±0.09)nmol/(min·m3)和(12.52±4.22)pmol/(min·μg),处于国内相对较低的暴露水平。有机碳、二次离子(SO42-、NO3-和NH4+)和交通源特征元素(Cu、Zn等)与DTTv呈中度相关,说明二次源、交通源等对健康相关的PM暴露产生一定影响。PMF对DTTv的源解析结果也表明,交通源(40.1%)和二次源(35.6%)对DTTv的贡献高于扬尘源(18.6%)和燃烧源(5.8%),MLR-PCA解析结果进一步证实了交通源和二次源对DTTv的重要贡献。该成果可为大气污染精准防控和健康影响分析提供参考。
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  • 收稿日期:  2023-05-06
  • 网络出版日期:  2024-07-11

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