Pollution characteristics and health risk assessment of fine particulate matter and its metal elements during Chinese New Year

IF 3.2 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Indoor and Built Environment Pub Date : 2024-02-28 DOI:10.1177/1420326x241236692

Xinru Liu, Li Bai, Yongbo Cui, Xiuling Xu

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引用次数: 0

Abstract

The Chinese Lunar New Year is a significant festival in China that leads to indoor and outdoor air pollution with distinct characteristics compared to normal times. In this study, indoor and outdoor air samples were collected and analysed to investigate the indoor and outdoor pollution of PM2.5 and its metal elements during the Chinese New Year. The findings reveal that there is a notable positive correlation between indoor and outdoor PM2.5 concentrations during the Chinese New Year, with outdoor concentrations being higher on average. The levels of PM2.5 concentrations indoors and outdoors started to increase on Chinese New Year’s Eve and peaked after the early hours of the Chinese New Year. The total concentrations of six metal elements (Cd, Cr, Ni, Cu, Pb and Zn) in indoor and outdoor PM2.5 during the Chinese New Year in 2022 were 738.73 ± 134.93 mg/kg and 1124.38 ± 553.14 mg/kg, respectively. Principal component analysis suggests that the main sources of indoor metal elements were from outdoor combustion sources and human activities, while outdoor sources were fireworks displays and emissions from coal combustion. Based on the U.S. EPA risk assessment carried out, both indoor and outdoor PM2.5 metal elements could pose a carcinogenic risk to adults.

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春节期间细颗粒物及其金属元素的污染特征与健康风险评估

春节是中国的一个重要节日，与平时相比，春节期间的室内外空气污染具有明显的特点。本研究采集了室内外空气样本并进行分析，以研究春节期间室内外 PM2.5 及其金属元素的污染情况。研究结果表明，春节期间室内和室外的 PM2.5 浓度之间存在明显的正相关关系，室外的平均浓度更高。室内和室外的 PM2.5 浓度水平从除夕开始上升，并在春节凌晨后达到峰值。2022 年春节期间，室内和室外 PM2.5 中六种金属元素（镉、铬、镍、铜、铅和锌）的总浓度分别为 738.73 ± 134.93 mg/kg 和 1124.38 ± 553.14 mg/kg。主成分分析表明，室内金属元素的主要来源是室外燃烧源和人类活动，而室外来源则是烟花燃放和燃煤排放。根据美国环保局进行的风险评估，室内和室外的 PM2.5 金属元素都可能对成年人构成致癌风险。

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

Indoor and Built Environment 环境科学-工程：环境

CiteScore

6.40

自引率

25.00%

发文量

130

审稿时长

2.6 months

期刊介绍： Indoor and Built Environment publishes reports on any topic pertaining to the quality of the indoor and built environment, and how these might effect the health, performance, efficiency and comfort of persons living or working there. Topics range from urban infrastructure, design of buildings, and materials used to laboratory studies including building airflow simulations and health effects. This journal is a member of the Committee on Publication Ethics (COPE).