粒径、季节变化和酸老化对伊朗伊斯法罕城市和工业空气中PM氧化电位的影响

IF 7.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Pollution Pub Date : 2025-02-08 DOI:10.1016/j.envpol.2025.125828

Mahdi Sadeghi , Nourollah Mirghaffari , Yaghoub Hajizadeh , Mohsen Soleimani

{"title":"粒径、季节变化和酸老化对伊朗伊斯法罕城市和工业空气中PM氧化电位的影响","authors":"Mahdi Sadeghi , Nourollah Mirghaffari , Yaghoub Hajizadeh , Mohsen Soleimani","doi":"10.1016/j.envpol.2025.125828","DOIUrl":null,"url":null,"abstract":"<div><div>Air pollution from particulate matter (PM) presents significant global environmental and public health challenges. PM's oxidative potential (OP) is a critical indicator integrating biological and physicochemical characteristics. This study investigates the OP of PM across different size fractions (PM2.5, PM10, and total suspended particles (TSP)) in urban and industrial areas of Isfahan, Iran, focusing on the effects of acid aging and seasonal variation. The oxidative potential of 92 PM samples, comprising 54 urban and 38 industrial samples, was evaluated using the dithiothreitol assay (OPDTT). The OPDTT values (mean ± sd) for PM2.5, PM10, and TSP of urban areas were 2.4 ± 0.8, 1.8 ± 0.6, and 1.1 ± 0.2, respectively. Corresponding values for industrial areas were 2.6 ± 0.8, 1.8 ± 0.4, and 1.0 ± 0.4 nmol min−1 m−3, respectively. Following exposure to nitric acid and sulfuric acid, the OPDTT values of urban PM increased by 62% and 41%, while industrial PM showed increases of 108% and 80%, respectively. Seasonal analysis revealed higher OPDTT values during warm months compared to cold months. Fine particles (PM2.5) exhibited greater OPDTT than coarse particles, particularly after acid aging. Furthermore, PM2.5 from industrial areas displayed higher toxicity than urban areas, likely attributable to particle concentration and chemical composition differences. This study highlights the importance of PM characteristics and sources in particle toxicity enhanced by acid aging. These findings underscore the importance of addressing the chemical composition and environmental factors contributing to PM toxicity, especially during warm months.</div></div>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"369 ","pages":"Article 125828"},"PeriodicalIF":7.3000,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of particle size, seasonal variation, and acid aging on the oxidative potential of urban and industrial airborne PM in Isfahan metropolis, Iran\",\"authors\":\"Mahdi Sadeghi , Nourollah Mirghaffari , Yaghoub Hajizadeh , Mohsen Soleimani\",\"doi\":\"10.1016/j.envpol.2025.125828\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Air pollution from particulate matter (PM) presents significant global environmental and public health challenges. PM's oxidative potential (OP) is a critical indicator integrating biological and physicochemical characteristics. This study investigates the OP of PM across different size fractions (PM2.5, PM10, and total suspended particles (TSP)) in urban and industrial areas of Isfahan, Iran, focusing on the effects of acid aging and seasonal variation. The oxidative potential of 92 PM samples, comprising 54 urban and 38 industrial samples, was evaluated using the dithiothreitol assay (OPDTT). The OPDTT values (mean ± sd) for PM2.5, PM10, and TSP of urban areas were 2.4 ± 0.8, 1.8 ± 0.6, and 1.1 ± 0.2, respectively. Corresponding values for industrial areas were 2.6 ± 0.8, 1.8 ± 0.4, and 1.0 ± 0.4 nmol min−1 m−3, respectively. Following exposure to nitric acid and sulfuric acid, the OPDTT values of urban PM increased by 62% and 41%, while industrial PM showed increases of 108% and 80%, respectively. Seasonal analysis revealed higher OPDTT values during warm months compared to cold months. Fine particles (PM2.5) exhibited greater OPDTT than coarse particles, particularly after acid aging. Furthermore, PM2.5 from industrial areas displayed higher toxicity than urban areas, likely attributable to particle concentration and chemical composition differences. This study highlights the importance of PM characteristics and sources in particle toxicity enhanced by acid aging. These findings underscore the importance of addressing the chemical composition and environmental factors contributing to PM toxicity, especially during warm months.</div></div>\",\"PeriodicalId\":311,\"journal\":{\"name\":\"Environmental Pollution\",\"volume\":\"369 \",\"pages\":\"Article 125828\"},\"PeriodicalIF\":7.3000,\"publicationDate\":\"2025-02-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Pollution\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0269749125002015\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Pollution","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0269749125002015","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

摘要

来自颗粒物（PM）的空气污染给全球环境和公共卫生带来了重大挑战。PM的氧化电位（OP）是综合生物和物理化学特性的重要指标。本研究调查了伊朗伊斯法罕城市和工业区不同粒径组分（PM2.5、PM10和总悬浮颗粒（TSP）） PM的OP，重点研究了酸老化和季节变化的影响。采用二硫代苏糖醇法（OPDTT）对54份城市和38份工业样品中的92份PM样品的氧化电位进行了评估。城区PM2.5、PM10和TSP的OPDTT值（mean±sd）分别为2.4±0.8、1.8±0.6和1.1±0.2。工业区域的相应值分别为2.6±0.8、1.8±0.4和1.0±0.4 nmol min-1 m-3。在硝酸和硫酸的作用下，城市PM的OPDTT值分别增加62%和41%，而工业PM的OPDTT值分别增加108%和80%。季节分析显示，温暖月份的OPDTT值高于寒冷月份。细颗粒（PM2.5）的OPDTT大于粗颗粒，特别是酸老化后。此外，来自工业区的PM2.5比城市地区的毒性更高，可能是由于颗粒浓度和化学成分的差异。该研究强调了酸老化增强颗粒毒性中PM特性和来源的重要性。这些发现强调了解决导致PM毒性的化学成分和环境因素的重要性，特别是在温暖的月份。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Effects of particle size, seasonal variation, and acid aging on the oxidative potential of urban and industrial airborne PM in Isfahan metropolis, Iran

查看原文本刊更多论文

Effects of particle size, seasonal variation, and acid aging on the oxidative potential of urban and industrial airborne PM in Isfahan metropolis, Iran

Air pollution from particulate matter (PM) presents significant global environmental and public health challenges. PM's oxidative potential (OP) is a critical indicator integrating biological and physicochemical characteristics. This study investigates the OP of PM across different size fractions (PM_2.5, PM_10, and total suspended particles (TSP)) in urban and industrial areas of Isfahan, Iran, focusing on the effects of acid aging and seasonal variation. The oxidative potential of 92 PM samples, comprising 54 urban and 38 industrial samples, was evaluated using the dithiothreitol assay (OP^DTT). The OP^DTT values (mean ± sd) for PM_2.5, PM₁₀, and TSP of urban areas were 2.4 ± 0.8, 1.8 ± 0.6, and 1.1 ± 0.2, respectively. Corresponding values for industrial areas were 2.6 ± 0.8, 1.8 ± 0.4, and 1.0 ± 0.4 nmol min⁻¹ m⁻³, respectively. Following exposure to nitric acid and sulfuric acid, the OP^DTT values of urban PM increased by 62% and 41%, while industrial PM showed increases of 108% and 80%, respectively. Seasonal analysis revealed higher OP^DTT values during warm months compared to cold months. Fine particles (PM_2.5) exhibited greater OP^DTT than coarse particles, particularly after acid aging. Furthermore, PM_2.5 from industrial areas displayed higher toxicity than urban areas, likely attributable to particle concentration and chemical composition differences. This study highlights the importance of PM characteristics and sources in particle toxicity enhanced by acid aging. These findings underscore the importance of addressing the chemical composition and environmental factors contributing to PM toxicity, especially during warm months.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Environmental Pollution 环境科学-环境科学

CiteScore

16.00

自引率

6.70%

发文量

2082

审稿时长

2.9 months

期刊介绍： Environmental Pollution is an international peer-reviewed journal that publishes high-quality research papers and review articles covering all aspects of environmental pollution and its impacts on ecosystems and human health. Subject areas include, but are not limited to: • Sources and occurrences of pollutants that are clearly defined and measured in environmental compartments, food and food-related items, and human bodies; • Interlinks between contaminant exposure and biological, ecological, and human health effects, including those of climate change; • Contaminants of emerging concerns (including but not limited to antibiotic resistant microorganisms or genes, microplastics/nanoplastics, electronic wastes, light, and noise) and/or their biological, ecological, or human health effects; • Laboratory and field studies on the remediation/mitigation of environmental pollution via new techniques and with clear links to biological, ecological, or human health effects; • Modeling of pollution processes, patterns, or trends that is of clear environmental and/or human health interest; • New techniques that measure and examine environmental occurrences, transport, behavior, and effects of pollutants within the environment or the laboratory, provided that they can be clearly used to address problems within regional or global environmental compartments.