[Characteristics and Health Risks of Metal Elements in House Dust in Baotou].

Q2 Environmental Science
Jing-Wen Wang, Hai-Jun Zhou, Yang-Chao Lü, Bing Sun, Xiao-Tao Fu, Xi Chun, Zhi-Qiang Wan
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引用次数: 0

Abstract

To understand the potential impact of metal elements in house dust in heavy industrial cities on human health, house dust samples were collected from 46 residential quarters of four urban districts of Baotou city. The contents of 13 metal elements were determined, and the pollution characteristics, sources, and health risks of metal elements were analyzed. The results showed that the enrichment factors and geo-accumulation indices of anthropogenic metals (Pb, As, Cu, Fe, Cd, Cr, Ni, and Zn) were extremely high, indicating a high pollution degree. The concentrations, enrichment factors, and geo-accumulation indices of iron smelting-related elements (Fe, Mn, Cr, and V) were in the order of Kundulun district > Qingshan district > Jiuyuan district > Donghe district, which was negatively correlated with the distance from the large iron smelting enterprise. Principal component analysis identified five sources: the iron and steel smelting source, natural source, nonferrous metal smelting source, traffic source, and coal combustion, among which iron and steel smelting and natural sources were the major sources of metal elements in house dust in Baotou. The results of health risk assessment suggested that ingestion and dermal contact were the major exposure pathways of metal elements in house dust in Baotou. The influence of the inhalation pathway could be ignored. All individual metal elements had no carcinogenic risk to adults or children. However, the combined action of all elements posed a certain non-carcinogenic risk to children. Ni, As, and Cr had carcinogenic health risks to both adults and children.

[包头市住宅粉尘中金属元素的特征及健康风险]。
为了解重工业城市室内粉尘中金属元素对人体健康的潜在影响,对包头市4个城区的46个居民区进行了室内粉尘采样。测定了13种金属元素的含量,分析了金属元素的污染特征、来源和健康风险。结果表明:该区人为金属(Pb、As、Cu、Fe、Cd、Cr、Ni、Zn)富集因子和富集指数极高,污染程度较高;铁冶炼相关元素(Fe、Mn、Cr、V)的富集程度、富集因子和地质富集指数依次为:昆都仑地区>;青山区;九源区>;与大型冶炼铁企业的距离呈负相关。主成分分析鉴定出钢铁冶炼源、自然源、有色金属冶炼源、交通源和燃煤源5个来源,其中钢铁冶炼源和自然源是包头市室内粉尘中金属元素的主要来源。健康风险评价结果表明,食入和皮肤接触是包头市室内粉尘中金属元素的主要暴露途径。吸入途径的影响可以忽略不计。所有单个金属元素对成人或儿童没有致癌风险。然而,所有元素的共同作用对儿童构成一定的非致癌风险。Ni、As和Cr对成人和儿童都有致癌健康风险。
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来源期刊
环境科学
环境科学 Environmental Science-Environmental Science (all)
CiteScore
4.40
自引率
0.00%
发文量
15329
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