Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?

Metals discharged from industrial effluents, agricultural wastewater, and sewage runoff by rapid urbanization are of concern as contaminants of freshwater ecosystem because of their persistence and high toxicity to aquatic organisms. This study attempted to identify which metal posed the greatest ri...

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Autores principales:	Chao Su, Yonglong Lu, Andrew C. Johnson, Yajuan Shi, Meng Zhang, Yueqing Zhang, Monika D. Juergens, Xiaowei Jin
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2017
Materias:	chemical pollution freshwater ecosystem metals risk ranking Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/f0b7f8f117de493ab9962e66ad623774
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spelling	oai:doaj.org-article:f0b7f8f117de493ab9962e66ad6237742021-12-02T12:52:12ZWhich metal represents the greatest risk to freshwater ecosystem in bohai region of china?2096-41292332-887810.1002/ehs2.1260https://doaj.org/article/f0b7f8f117de493ab9962e66ad6237742017-02-01T00:00:00Zhttp://dx.doi.org/10.1002/ehs2.1260https://doaj.org/toc/2096-4129https://doaj.org/toc/2332-8878Metals discharged from industrial effluents, agricultural wastewater, and sewage runoff by rapid urbanization are of concern as contaminants of freshwater ecosystem because of their persistence and high toxicity to aquatic organisms. This study attempted to identify which metal posed the greatest risk to freshwater ecosystem in the Bohai Region, China. The metals arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), zinc (Zn), lead (Pb), nickel (Ni), mercury (Hg), iron (Fe), and manganese (Mn) were compared against norfloxacin and gamma‐hexachlorocyclohexane (lindane). By comparing the median reported environmental and ecotoxicity concentrations, it showed that Cu, Fe, Zn, Mn, and Cr were the top five metals of concern. Of these, Cu was deemed to represent the highest risk and Hg the lowest risk. The risks for all metals were higher than those for norfloxacin and lindane. Almost all the metals except Hg had water concentrations that exceeded levels where ecotoxicity effects had been recorded in the literature. A comparison with the measurements across the rivers suggested that all metals examined had water concentrations about 5‐ to 10‐fold higher than the median values except for Cu, Fe, Cd, and Pb. The Fuyang River, a tributary of the Haihe River Basin, seemed to be the location with the highest metal concentrations. However, comparing the post‐2010 period to 2000–2009, concentrations of all the metals had fallen except for Fe and Mn, so risks have decreased over the last 7 yr with the greatest improvements for Cd and Pb. While metals still pose high risks to freshwater ecosystem in this region, there is encouragement that some control measures are taken into effect.Chao SuYonglong LuAndrew C. JohnsonYajuan ShiMeng ZhangYueqing ZhangMonika D. JuergensXiaowei JinTaylor & Francis Grouparticlechemical pollutionfreshwater ecosystemmetalsrisk rankingEcologyQH540-549.5ENEcosystem Health and Sustainability, Vol 3, Iss 2 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	chemical pollution freshwater ecosystem metals risk ranking Ecology QH540-549.5
spellingShingle	chemical pollution freshwater ecosystem metals risk ranking Ecology QH540-549.5 Chao Su Yonglong Lu Andrew C. Johnson Yajuan Shi Meng Zhang Yueqing Zhang Monika D. Juergens Xiaowei Jin Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?
description	Metals discharged from industrial effluents, agricultural wastewater, and sewage runoff by rapid urbanization are of concern as contaminants of freshwater ecosystem because of their persistence and high toxicity to aquatic organisms. This study attempted to identify which metal posed the greatest risk to freshwater ecosystem in the Bohai Region, China. The metals arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), zinc (Zn), lead (Pb), nickel (Ni), mercury (Hg), iron (Fe), and manganese (Mn) were compared against norfloxacin and gamma‐hexachlorocyclohexane (lindane). By comparing the median reported environmental and ecotoxicity concentrations, it showed that Cu, Fe, Zn, Mn, and Cr were the top five metals of concern. Of these, Cu was deemed to represent the highest risk and Hg the lowest risk. The risks for all metals were higher than those for norfloxacin and lindane. Almost all the metals except Hg had water concentrations that exceeded levels where ecotoxicity effects had been recorded in the literature. A comparison with the measurements across the rivers suggested that all metals examined had water concentrations about 5‐ to 10‐fold higher than the median values except for Cu, Fe, Cd, and Pb. The Fuyang River, a tributary of the Haihe River Basin, seemed to be the location with the highest metal concentrations. However, comparing the post‐2010 period to 2000–2009, concentrations of all the metals had fallen except for Fe and Mn, so risks have decreased over the last 7 yr with the greatest improvements for Cd and Pb. While metals still pose high risks to freshwater ecosystem in this region, there is encouragement that some control measures are taken into effect.
format	article
author	Chao Su Yonglong Lu Andrew C. Johnson Yajuan Shi Meng Zhang Yueqing Zhang Monika D. Juergens Xiaowei Jin
author_facet	Chao Su Yonglong Lu Andrew C. Johnson Yajuan Shi Meng Zhang Yueqing Zhang Monika D. Juergens Xiaowei Jin
author_sort	Chao Su
title	Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?
title_short	Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?
title_full	Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?
title_fullStr	Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?
title_full_unstemmed	Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?
title_sort	which metal represents the greatest risk to freshwater ecosystem in bohai region of china?
publisher	Taylor & Francis Group
publishDate	2017
url	https://doaj.org/article/f0b7f8f117de493ab9962e66ad623774
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Which metal represents the greatest risk to freshwater ecosystem in bohai region of china?

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