Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China

For the purpose of pollution assessment, human health risk assessment and quantitative source apportionment of heavy metals in cultivated soils, a total of 382 cultivated soil samples were collected from cultivated of Lanzhou in September 2019. Various indices, including pollution index (PI), Nemero...

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Autores principales:	Lei Chai, Yuhong Wang, Xin Wang, Liang Ma, Zhenxiang Cheng, Limin Su
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Cultivated soil Heavy metals Pollution assessment Health risk assessment Positive matrix factorization (PMF) Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/1d0f1d4986f3478799dad17997d38208
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id	oai:doaj.org-article:1d0f1d4986f3478799dad17997d38208
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spelling	oai:doaj.org-article:1d0f1d4986f3478799dad17997d382082021-12-01T04:47:33ZPollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China1470-160X10.1016/j.ecolind.2021.107507https://doaj.org/article/1d0f1d4986f3478799dad17997d382082021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21001722https://doaj.org/toc/1470-160XFor the purpose of pollution assessment, human health risk assessment and quantitative source apportionment of heavy metals in cultivated soils, a total of 382 cultivated soil samples were collected from cultivated of Lanzhou in September 2019. Various indices, including pollution index (PI), Nemerow integrated pollution index (NIPI) and potential ecological risk index (RI) were used to analyze the pollution levels caused by heavy metals. Human health risk assessment, geographic information system (GIS) and positive matrix factorization (PMF) receptor modeling were employed to analyze the human health risk and source of heavy metals. The results showed that mean concentrations of Hg exceeded the national soil pollution risk screening value (GB 15618–2018). Spatially, except Cr in the study area, Pb, Cd, As, Cu, Zn and Ni have high value in Chengguan and Qilihe. Hg has high values in study areas outside Chengguan, Anning and Qilihe. The Nemerow integrated pollution index showed that the moderate and severe samples sites were 37.70% and 3.66%, respectively. The potential ecological risk indicates that most of the sampling sites are moderate risks. According to the health risk assessment results, the carcinogenic and non-carcinogenic risks of heavy metals to the human body are insignificant. Based on positive matrix factorization, there are four main sources of eight heavy metals. Pb, Cd, Zn and Ni were attributed to traffic sources; Hg were closely related to agricultural activities and medical treatment; Cr, Cu and Ni originated from natural source, As was derived from industrial activity. In this study enhance understanding of the pollution levers of heavy metals in Lanzhou cultivated soils, and also serves as reference for pollution source apportionment in other regions.Lei ChaiYuhong WangXin WangLiang MaZhenxiang ChengLimin SuElsevierarticleCultivated soilHeavy metalsPollution assessmentHealth risk assessmentPositive matrix factorization (PMF)EcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107507- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cultivated soil Heavy metals Pollution assessment Health risk assessment Positive matrix factorization (PMF) Ecology QH540-549.5
spellingShingle	Cultivated soil Heavy metals Pollution assessment Health risk assessment Positive matrix factorization (PMF) Ecology QH540-549.5 Lei Chai Yuhong Wang Xin Wang Liang Ma Zhenxiang Cheng Limin Su Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China
description	For the purpose of pollution assessment, human health risk assessment and quantitative source apportionment of heavy metals in cultivated soils, a total of 382 cultivated soil samples were collected from cultivated of Lanzhou in September 2019. Various indices, including pollution index (PI), Nemerow integrated pollution index (NIPI) and potential ecological risk index (RI) were used to analyze the pollution levels caused by heavy metals. Human health risk assessment, geographic information system (GIS) and positive matrix factorization (PMF) receptor modeling were employed to analyze the human health risk and source of heavy metals. The results showed that mean concentrations of Hg exceeded the national soil pollution risk screening value (GB 15618–2018). Spatially, except Cr in the study area, Pb, Cd, As, Cu, Zn and Ni have high value in Chengguan and Qilihe. Hg has high values in study areas outside Chengguan, Anning and Qilihe. The Nemerow integrated pollution index showed that the moderate and severe samples sites were 37.70% and 3.66%, respectively. The potential ecological risk indicates that most of the sampling sites are moderate risks. According to the health risk assessment results, the carcinogenic and non-carcinogenic risks of heavy metals to the human body are insignificant. Based on positive matrix factorization, there are four main sources of eight heavy metals. Pb, Cd, Zn and Ni were attributed to traffic sources; Hg were closely related to agricultural activities and medical treatment; Cr, Cu and Ni originated from natural source, As was derived from industrial activity. In this study enhance understanding of the pollution levers of heavy metals in Lanzhou cultivated soils, and also serves as reference for pollution source apportionment in other regions.
format	article
author	Lei Chai Yuhong Wang Xin Wang Liang Ma Zhenxiang Cheng Limin Su
author_facet	Lei Chai Yuhong Wang Xin Wang Liang Ma Zhenxiang Cheng Limin Su
author_sort	Lei Chai
title	Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China
title_short	Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China
title_full	Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China
title_fullStr	Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China
title_full_unstemmed	Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China
title_sort	pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in lanzhou, china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/1d0f1d4986f3478799dad17997d38208
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Pollution characteristics, spatial distributions, and source apportionment of heavy metals in cultivated soil in Lanzhou, China

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