Outdoor Health Risk of Atmospheric Particulate Matter at Night in Xi’an, Northwestern China

IF 10.8 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

环境科学与技术 Pub Date : 2023-06-13 DOI:10.1021/acs.est.3c02670

Dyussenova Ainur, Qingcai Chen*, Tong Sha, Mahmood Zarak, Zipeng Dong, Wei Guo, Zimeng Zhang, Kukybayeva Dina and Taicheng An,

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引用次数: 1

Abstract

The deterioration of air quality via anthropogenic activities during the night period has been deemed a serious concern among the scientific community. Thereby, we explored the outdoor particulate matter (PM) concentration and the contributions from various sources during the day and night in winter and spring 2021 in a megacity, northwestern China. The results revealed that the changes in chemical compositions of PM and sources (motor vehicles, industrial emissions, coal combustion) at night lead to substantial PM toxicity, oxidative potential (OP), and OP/PM per unit mass, indicating high oxidative toxicity and exposure risk at nighttime. Furthermore, higher environmentally persistent free radical (EPFR) concentration and its significant correlation with OP were observed, suggesting that EPFRs cause reactive oxygen species (ROS) formation. Moreover, the noncarcinogenic and carcinogenic risks were systematically explained and spatialized to children and adults, highlighting intensified hotspots to epidemiological researchers. This better understanding of day–night-based PM formation pathways and their hazardous impact will assist to guide measures to diminish the toxicity of PM and reduce the disease led by air pollution.

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西安市夜间大气颗粒物室外健康风险分析

人类在夜间活动造成的空气质量恶化已被科学界视为一个严重的问题。在此基础上，研究了2021年冬、春两季中国西北某特大城市室外颗粒物(PM)的昼夜浓度及其不同来源的贡献。结果表明，夜间PM的化学成分和来源(机动车、工业排放、燃煤)的变化导致PM毒性、氧化电位(OP)和单位质量的OP/PM显著增加，表明夜间PM具有较高的氧化毒性和暴露风险。此外，观察到较高的环境持久性自由基(EPFR)浓度及其与OP的显著相关性，表明EPFR引起活性氧(ROS)的形成。此外，对儿童和成人的非致癌性和致癌性风险进行了系统的解释和空间化，突出了流行病学研究的热点。更好地了解以昼夜为基础的PM形成途径及其有害影响将有助于指导减少PM毒性和减少由空气污染引起的疾病的措施。

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来源期刊

环境科学与技术环境科学-工程：环境

CiteScore

17.50

自引率

9.60%

发文量

12359

审稿时长

2.8 months

期刊介绍： Environmental Science & Technology (ES&T) is a co-sponsored academic and technical magazine by the Hubei Provincial Environmental Protection Bureau and the Hubei Provincial Academy of Environmental Sciences. Environmental Science & Technology (ES&T) holds the status of Chinese core journals, scientific papers source journals of China, Chinese Science Citation Database source journals, and Chinese Academic Journal Comprehensive Evaluation Database source journals. This publication focuses on the academic field of environmental protection, featuring articles related to environmental protection and technical advancements.