Evaluation of single particle morphological characteristics and human health risks in different functional areas

IF 1.4 Q2 ENGINEERING, MULTIDISCIPLINARY

World Journal of Engineering Pub Date : 2024-01-01 DOI:10.1108/wje-08-2023-0310

Hongya Niu, Chunmiao Wu, Xinyi Ma, Xiaoteng Ji, Yuting Tian, Jinxi Wang

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引用次数: 0

Abstract

Purpose This study aims to better understand the morphological characteristics of single particle and the health risk characteristics of heavy metals in PM2.5 in different functional areas of Handan City. Design/methodology/approach High resolution transmission electron microscopy was used to observe the aerosol samples collected from different functional areas of Handan City. The morphology and size distribution of the particles collected on hazy and clear days were compared. The health risk evaluation model was applied to evaluate the hazardous effects of particles on human health in different functional areas on hazy days. Findings The results show that the particulate matter in different functional areas is dominated by spherical particles in different weather conditions. In particular, the proportion of spherical particles exceeds 70% on the haze day, and the percentage of soot aggregates increases significantly on the clear day. The percentage of each type of particle in the teaching and living areas varied less under different weather conditions. Except for the industrial area, the size distribution of each type of particle in haze samples is larger than that on the clear day. Spherical particles contribute more to the small particle size segment. Soot aggregate and other shaped particles contribute more to the large size segment. The mass concentrations of hazardous elements (HEs) in PM2.5 in different functional areas on consecutive haze pollution days were illustrated as industrial area > traffic area > living area > teaching area. Compared with the other functional areas, the teaching area had the lowest noncarcinogenic risk of HEs. The lifetime carcinogenic risk values of Cr and As elements in each functional area have exceeded residents’ threshold levels and are at high risk of carcinogenicity. Among the four functional areas, the industrial area has the highest carcinogenic and noncarcinogenic risks. But the effects of HEs on human health in the other functional areas should also be taken seriously and continuously controlled. Originality/value The significance of the study is to further understand the morphological characteristics of single particles and the health risks of heavy metals in different functional areas of Handan City. the authors hope to provide a reference for other coal-burning industrial cities to develop plans to improve air quality and human respiratory health.

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评估不同功能区的单颗粒形态特征和人类健康风险

目的本研究旨在更好地了解邯郸市不同功能区PM2.5中单颗粒物的形态特征和重金属的健康风险特征。设计/方法/手段采用高分辨透射电子显微镜观察从邯郸市不同功能区采集的气溶胶样品。比较了雾霾天和晴天采集的颗粒物的形态和粒径分布。应用健康风险评估模型评估了雾霾天不同功能区颗粒物对人体健康的危害。结果结果显示，在不同天气条件下，不同功能区的颗粒物以球形颗粒为主。特别是在雾霾天，球形颗粒的比例超过 70%，而在晴天，烟尘聚集体的比例明显增加。在不同天气条件下，教学区和生活区的各类颗粒物比例变化较小。除工业区外，灰霾天样本中各类颗粒物的粒径分布均大于晴天。球形颗粒对小粒径段的贡献较大。烟尘聚集体和其他形状的颗粒对大粒径段的贡献较大。连续雾霾污染日不同功能区 PM2.5 中有害元素（HEs）的质量浓度依次为工业区 > 交通区 > 生活区 > 教学区。与其他功能区相比，教学区的 HEs 非致癌风险最低。各功能区的铬和砷元素终生致癌风险值均超过居民阈值水平，处于高致癌风险状态。在四个功能区中，工业区的致癌和非致癌风险最高。但其他功能区的 HEs 对人体健康的影响也应受到重视和持续控制。原创性/价值研究的意义在于进一步了解邯郸市不同功能区的单颗粒物形态特征和重金属的健康风险，作者希望能为其他燃煤工业城市制定改善空气质量和人类呼吸健康的计划提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

World Journal of Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

10.50%

发文量

期刊介绍： The main focus of the World Journal of Engineering (WJE) is on, but not limited to; Civil Engineering, Material and Mechanical Engineering, Electrical and Electronic Engineering, Geotechnical and Mining Engineering, Nanoengineering and Nanoscience The journal bridges the gap between materials science and materials engineering, and between nano-engineering and nano-science. A distinguished editorial board assists the Editor-in-Chief, Professor Sun. All papers undergo a double-blind peer review process. For a full list of the journal''s esteemed review board, please see below.