Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China

Heavy metals in urban dust could pose noticeable human health risks, but there are few studies focusing on comprehensive human health risk assessment with the incorporation of both bioaccessibility and source apportionment in urban dust. Thus, fifty-eight urban dust samples were collected from kinde...

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Autores principales:	Jin-jin Ma, Yu Yan, Xue-juan Chen, Zi-ru Niu, Rui-lian Yu, Gong-ren Hu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Heavy metals Bioaccessibility APCS-MLR Source-specific health risk Urban dust Environmental pollution TD172-193.5 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/020429975045436a94f6faac76dd7ae0
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spelling	oai:doaj.org-article:020429975045436a94f6faac76dd7ae02021-11-14T04:28:25ZIncorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China0147-651310.1016/j.ecoenv.2021.112985https://doaj.org/article/020429975045436a94f6faac76dd7ae02021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0147651321010976https://doaj.org/toc/0147-6513Heavy metals in urban dust could pose noticeable human health risks, but there are few studies focusing on comprehensive human health risk assessment with the incorporation of both bioaccessibility and source apportionment in urban dust. Thus, fifty-eight urban dust samples were collected from kindergartens in Xiamen to analyze the bioaccessibility-based, source-specific health risk of heavy metals (V, Co, Ni, As, Mo, Cr, Mn, Cu, Zn, and Pb). Most heavy metals, except for V and Mn, were significantly enriched in urban dust based on their values of geoaccumulation index (Igeo) and may be influenced by human activities. The oral bioaccessibility values of heavy metals, which were estimated by the Solubility/Bioaccessibility Research Consortium (SBRC) in vitro model, ranged from 1.563% to 76.51%. The source apportionment determined by applying the absolute principal component analysis-multiple linear regression (APCS-MLR) model indicated five main potential sources, coal combustion, traffic and industrial, natural, construction and furniture sources, and unidentified sources, with contributions of 34.09%, 20.72%, 18.72%, 7.597% and 18.87%, respectively, to the accumulation of heavy metals in urban dust. After incorporating bioaccessibility adjustments, lower non-carcinogenic and carcinogenic risks of heavy metals were observed than those based on total metal content, with the mean hazard index (HI) values being less than the threshold value (1) and the mean total carcinogenic risk (TCR) values exceeding the precautionary criterion (10-6) for both adults and children. By combining bioaccessibility-based health risk assessment and source apportionment, traffic and industrial emissions and coal combustion dominated the noncarcinogenic and carcinogenic risks induced by heavy metals in urban dust, respectively. This study is expected to promote the systematic integration of source apportionment and bioaccessibility into health risk estimation for heavy metal contamination in urban dust, thus providing useful implications for better human health protection.Jin-jin MaYu YanXue-juan ChenZi-ru NiuRui-lian YuGong-ren HuElsevierarticleHeavy metalsBioaccessibilityAPCS-MLRSource-specific health riskUrban dustEnvironmental pollutionTD172-193.5Environmental sciencesGE1-350ENEcotoxicology and Environmental Safety, Vol 228, Iss , Pp 112985- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Heavy metals Bioaccessibility APCS-MLR Source-specific health risk Urban dust Environmental pollution TD172-193.5 Environmental sciences GE1-350
spellingShingle	Heavy metals Bioaccessibility APCS-MLR Source-specific health risk Urban dust Environmental pollution TD172-193.5 Environmental sciences GE1-350 Jin-jin Ma Yu Yan Xue-juan Chen Zi-ru Niu Rui-lian Yu Gong-ren Hu Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China
description	Heavy metals in urban dust could pose noticeable human health risks, but there are few studies focusing on comprehensive human health risk assessment with the incorporation of both bioaccessibility and source apportionment in urban dust. Thus, fifty-eight urban dust samples were collected from kindergartens in Xiamen to analyze the bioaccessibility-based, source-specific health risk of heavy metals (V, Co, Ni, As, Mo, Cr, Mn, Cu, Zn, and Pb). Most heavy metals, except for V and Mn, were significantly enriched in urban dust based on their values of geoaccumulation index (Igeo) and may be influenced by human activities. The oral bioaccessibility values of heavy metals, which were estimated by the Solubility/Bioaccessibility Research Consortium (SBRC) in vitro model, ranged from 1.563% to 76.51%. The source apportionment determined by applying the absolute principal component analysis-multiple linear regression (APCS-MLR) model indicated five main potential sources, coal combustion, traffic and industrial, natural, construction and furniture sources, and unidentified sources, with contributions of 34.09%, 20.72%, 18.72%, 7.597% and 18.87%, respectively, to the accumulation of heavy metals in urban dust. After incorporating bioaccessibility adjustments, lower non-carcinogenic and carcinogenic risks of heavy metals were observed than those based on total metal content, with the mean hazard index (HI) values being less than the threshold value (1) and the mean total carcinogenic risk (TCR) values exceeding the precautionary criterion (10-6) for both adults and children. By combining bioaccessibility-based health risk assessment and source apportionment, traffic and industrial emissions and coal combustion dominated the noncarcinogenic and carcinogenic risks induced by heavy metals in urban dust, respectively. This study is expected to promote the systematic integration of source apportionment and bioaccessibility into health risk estimation for heavy metal contamination in urban dust, thus providing useful implications for better human health protection.
format	article
author	Jin-jin Ma Yu Yan Xue-juan Chen Zi-ru Niu Rui-lian Yu Gong-ren Hu
author_facet	Jin-jin Ma Yu Yan Xue-juan Chen Zi-ru Niu Rui-lian Yu Gong-ren Hu
author_sort	Jin-jin Ma
title	Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China
title_short	Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China
title_full	Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China
title_fullStr	Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China
title_full_unstemmed	Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China
title_sort	incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of xiamen, china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/020429975045436a94f6faac76dd7ae0
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Incorporating bioaccessibility and source apportionment into human health risk assessment of heavy metals in urban dust of Xiamen, China

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