西安市城郊气溶胶pH的影响因素与源贡献

王亚楠; 杨舒淇; 吴佳霖; 杨旭; 杨凡; 王昭; 何炽; 刘佛傍

doi:10.7652/xjtuxb202512005

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西安市城郊气溶胶pH的影响因素与源贡献

专题 “双碳”背最下的污染控制与资源化利用 | 更新时间：2025-12-08

- 西安市城郊气溶胶pH的影响因素与源贡献
- Influencing Aerosol pH and Source Contribution in Urban and Suburban Areas of Xi'an City
- 西安交通大学学报 2025年59卷第12期页码：58-68
- 作者机构：
- 作者简介：
  
  作者简介：王亚楠（2001—），女，博士生；
  刘佛傍（通信作者），男，副教授，博士生导师。
- 基金信息：
  
  陕西省科学技术厅秦创原引用高层次创新企业人才项目(QCYRCXM-2022-363)
- DOI：10.7652/xjtuxb202512005
  中图分类号： X513
- 收稿：2025-05-30，
  
  纸质出版：2025-12-10
- 稿件说明：
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王亚楠, 杨舒淇, 吴佳霖, 等. 西安市城郊气溶胶pH的影响因素与源贡献[J]. 西安交通大学学报, 2025,59(12):58-68.

WANG Yanan, YANG Shuqi, WU Jialin, et al. Influencing Aerosol pH and Source Contribution in Urban and Suburban Areas of Xi'an City[J]. Journal of Xi'an Jiaotong University, 2025, 59(12): 58-68.
王亚楠, 杨舒淇, 吴佳霖, 等. 西安市城郊气溶胶pH的影响因素与源贡献[J]. 西安交通大学学报, 2025,59(12):58-68. DOI： 10.7652/xjtuxb202512005.

WANG Yanan, YANG Shuqi, WU Jialin, et al. Influencing Aerosol pH and Source Contribution in Urban and Suburban Areas of Xi'an City[J]. Journal of Xi'an Jiaotong University, 2025, 59(12): 58-68. DOI： 10.7652/xjtuxb202512005.

摘要

为阐明气溶胶pH的关键影响因素及其污染源贡献，基于2023年西安市城郊PM

2.5

样品水溶性离子和元素分析，结合ISORROPIA Ⅱ热力学平衡模型、正定矩阵因子分解模型与多元线性回归分析，系统评估了西安市城郊气溶胶pH水平及时空变化特征，分析了PM

2.5

化学组分和气象参数对pH的影响，量化了不同污染来源贡献对气溶胶pH的影响。研究结果表明：西安市城郊PM

2.5

整体呈弱酸性，城区和郊区气溶胶pH分别为5.1±1.7、5.2±1.7，受区域和季节影响显著，PM

2.5

中二次无机离子对pH具有显著贡献；影响pH变化的关键驱动因子是TNO

、SO

4、TNH

和Ca

，且pH变化量对SO

4比TNO

更为敏感。多元线性回归分析显示：生物质燃烧和二次硝酸盐在城郊均表现出显著酸化作用，且生物质燃烧源在城区影响更强，二次硝酸盐在郊区影响更强；交通排放源在城区缓解了气溶胶酸性的增强，这可能与NH

的中和作用有关，而二次硫酸盐在郊区对酸性的强化作用可能是由于其生成对污染传输和多相氧化作用更为敏感。

Abstract

To elucidate the key factors influencing aerosol pH and pollution source contributions

levels and spatiotemporal variations of aerosol pH in urban and suburban areas of Xi'an were systematically evaluated

effects of chemical particles comprising PM

2.5

and meteorological parameters on pH were analyzed

and contributions of different pollution sources to the aerosol pH was quantified in this study based on water-soluble ion and element analysis of PM

2.5

samples collected from urban and suburban areas of Xi'an in 2023

in combination with the ISORROPIAⅡthermodynamic equilibrium model

the positive matrix factorization model

and multiple linear regression analysis.The research results show that PM

2.5

in the urban and suburban areas of Xi'an was generally weak acidic：The aerosol pH in urban and suburban areas was 5.1 ± 1.7 and 5.2 ±1.7 respectively

subject to significant variations in different areas and seasons；a notable contribution of secondary inorganic ions in PM

2.5

to the aerosol acidity was observed；the key driving factors affecting pH were TNO

TNH

and Ca

with ΔpH being more sensitive to SO

4 than to TNO

.Multiple linear regression analysis indicated that biomass burning and secondary nitrate had significant acidifying effects in both urban and suburban areas.Biomass burning had a stronger effect in urban areas

while secondary nitrate had a more pronounced effect in suburban areas.Traffic emissions appeared to have mitigated aerosol acidity in urban areas

possibly due to the neutralizing effect of NH

.The enhanced acidifying effect of secondary sulfate in suburban areas might be attributed to its higher sensitivity to pollution transport and multiphase oxidation processes.

关键词

Keywords

references

LI Wenshuai , QI Yuxuan , LIU Yingchen , et al . Daytime and night time aerosol soluble iron formation in clean and slightly polluted moist air in a coastal city in eastern China [J ] . Atmospheric Chemistry and Physics , 2024 , 24 ( 11 ): 6495 - 6508 .

王友峰 , 景宽 , 沈秀娥 , 等 . 北京市四季典型污染过程PM2.5酸度与二次硝酸盐形成机制 [J ] . 中国环境科学 , 2024 , 44 ( 8 ): 4167 - 4178 .

WANG Youfeng , JING Kuan , SHEN Xiu’e , et al . PM2.5 acidity and secondary nitrate formation during typical pollution episodes of four seasons in Beijing [J ] . China Environmental Science , 2024 , 44 ( 8 ): 4167 - 4178 .

NAH T , GUO Hongyu , SULLIVAN A P , et al . Characterization of aerosol composition,aerosol acidity,and organic acid partitioning at an agriculturally intensive rural southeastern US site [J ] . Atmospheric Chemistry and Physics , 2018 , 18 ( 15 ): 11471 - 11491 .

SHI Guoliang , XU Jiao , PENG Xing , et al . pH of aerosols in a polluted atmosphere:source contributions to highly acidic aerosol [J ] . Environmental Science &Technology , 2017 , 51 ( 8 ): 4289 - 4296 .

杨萌 , 刘畅 , 王笑欢 , 等 . 大连市PM2.5中水溶性离子污染特征及高酸度成因 [J ] . 环境科学 , 2024 , 45 ( 9 ): 5127 - 5139 .

YANG Meng , LIU Chang , WANG Xiaohuan , et al . Characteristics of water-soluble ion pollution in PM2.5 and the causes of high acidity of PM2.5 in Dalian [J ] . Environmental Science , 2024 , 45 ( 9 ): 5127 - 5139 .

ZHANG T , SHEN Z X , SU H , et al . Effects of aerosol water content on the formation of secondary inorganic aerosol during a winter heavy PM2.5 pollution episode in Xi’an, China [J ] . Atmospheric Environ ment , 2021 , 252 : 118304 .

YANG Yuhan , GAO Dong , WEBER R J . A method for liquid spectrophotometric measurement of total and water-soluble iron and copper in ambient aerosols [J ] . Atmospheric Measurement Techniques , 2021 , 14 ( 6 ): 4707 - 4719 .

FANG Zhengyang , DONG Shuwei , HUANG Chengpeng , et al . On using an aerosol thermodynamic model to calculate aerosol acidity of coarse particles [J ] . Journal of Environmental Sciences , 2025 , 148 : 46 - 56 .

PAATERO P , EBERLY S , BROWN S G , et al . Methods for estimating uncertainty in factor analytic solutions [J ] . Atmospheric Measurement Techniques , 2014 , 7 ( 3 ): 781 - 797 .

沈振兴 , 周娟 , 曹军骥 , 等 . 西安冬季可吸入颗粒物中多环芳烃的组成及风险评价 [J ] . 西安交通大学学报 , 2009 , 43 ( 11 ): 114 - 120 .

SHEN Zhenxing , ZHOU Juan , CAO Junji , et al . Chemical composition and assessment of PM 10 polycyclic aromatic hydrocarbons over Xi’an in winter [J ] . Journal of Xi’an Jiaotong University , 2009 , 43 ( 11 ): 114 - 120 .

HUNG H M , HOFFMANN M R . Oxidation of gasphase SO 2 on the surfaces of acidic microdroplets:implications for sulfate and sulfate radical anion formation in the atmospheric liquid phase [J ] . Environmental Science & Technology , 2015 , 49 ( 23 ): 13768 - 13776 .

GUO Hongyu , WEBER R J , NENES A . High levels of ammonia do not raise fine particle pH sufficiently to yield nitrogen oxide-dominated sulfate production [J ] . Scientific Reports , 2017 , 7 ( 1 ): 12109 .

陈莹 , 徐瑞欣 , 郝祺 , 等 . 富氨地区秋冬季不同PM 2.5 污染级别气溶胶酸性及其影响因素 [J ] . 中国环境科学 , 2022 , 42 ( 1 ): 43 - 51 .

CHEN Ying , XU Ruixin , HAO Qi , et al . Aerosol acidity and its influencing factors at different PM 2.5 pollution levels in ammonia-rich area in autumn and winter [J ] . China Environmental Science , 2022 , 42 ( 1 ): 43 - 51 .

LIU Mingxu , HUANG Xin , SONG Yu , et al . Ammonia emission control in China would mitigate haze pollution and nitrogen deposition,but worsen acid rain [J ] . Proceedings of the National Academy of Sciences , 2019 , 116 ( 16 ): 7760 - 7765 .

ZHENG Mingming , XU Ke , YUAN Lianxin , et al . Fine particle pH and its impact on PM2.5 control in a megacity of central China [J ] . Aerosol and Air Quality Research , 2022 , 22 ( 5 ): 210394 .

AINUR D , CHEN Qingcai , WANG Yuqin , et al . Pollution characteristics and sources of environmentally persistent free radicals and oxidation potential in fine particulate matter related to city lockdown (CLD) in Xi’an, China [J ] . Environmental Research , 2022 , 210 : 112899 .

IKEMORI F , URANISHI K , ASAKAWA D , et al . Source apportionment in PM 2.5 in central Japan using positive matrix factorization focusing on small-scale local biomass burning [J ] . Atmospheric Pollution Research , 2021 , 12 ( 3 ): 162 - 172 .

LEI Yali , SHEN Zhenxing , ZHANG Tian , et al . High time resolution observation of PM 2.5 brown carbon over Xi’an in northwestern China:seasonal variation and source apportionment [J ] . Chemosphere , 2019 , 237 : 124530 .

ZHANG Jingzhu , ZHOU Xuehua , WANG Zhe , et al . Trace elements in PM 2.5 in Shandong Province:source identification and health risk assessment [J ] . Science of the Total Environment , 2018 , 621 : 558 - 577 .

鲁晨妮 , 徐再萌 , 费冰雁 , 等 . 生物质炭配施有机肥对设施土壤理化性质、酶活性和细菌群落结构的影响 [J ] . 土壤 , 2025 , 57 ( 2 ): 333 - 341 .

LU Chenni , XU Zaimeng , FEI Bingyan , et al . Effects of combined application of biochar and organic fertilizer on soil properties,enzyme activity and bacterial community structure [J ] . Soils , 2025 , 57 ( 2 ): 333 - 341 .

李煜斌 , 姜蕴聪 , 杨元建 , 等 . 西安市PM2.5城乡差异及与城市热岛的关联研究 [J ] . 大气科学学报 , 2022 , 45 ( 6 ): 904 - 916 .

LI Yubin , JIANG Yuncong , YANG Yuanjian , et al . The correlation between urban-rural PM 2.5 difference and urban heat island intensity in Xi’an [J ] . Transactions of Atmospheric Sciences , 2022 , 45 ( 6 ): 904 - 916 .

杨棠武 , 吕美婷 , 安树青 , 等 . 城区森林与乡村森林近地层臭氧浓度的变化规律对比 [J ] . 生态学报 , 2014 , 34 ( 19 ): 5670 - 5678 .

YANG Tangwu , LÜ Meiting , AN Shuqing , et al . Comparison of near-ground ozone concentrations between urban and rural forests [J ] . Acta Ecologica Sinica , 2014 , 34 ( 19 ): 5670 - 5678 .

CAO Junji , ZHANG Ting , CHOW J C , et al . Characterization of atmospheric ammonia over Xi’an, China [J ] . Aerosol and Air Quality Research , 2009 , 9 ( 2 ): 277 - 289 .

WU Can , WANG Gehui , LI Jin , et al . Non-agricultural sources dominate the atmospheric NH 3 in Xi’an, a megacity in the semi-arid region of China [J ] . Science of the Total Environment , 2020 , 722 : 137756 .

LAN Ziru , LIN Weili , ZHAO Gang . Sources,variations, and effects on air quality of atmospheric ammonia [J ] . Current Pollution Reports , 2024 , 10 ( 1 ): 40 - 53 .

GEN Masao , ZHANG Masao , HUANG Dandan , et al . Heterogeneous oxidation of SO 2 in sulfate production during nitrate photolysis at 300 nm:effect of pH, relative humidity,irradiation intensity,and the presence of organic compounds [J ] . Environmental Science& Technology , 2019 , 53 ( 15 ): 8757 - 8766 .

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