Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters

Reclaimed water recharging rivers is an important way to solve the problem of water shortage. However, reclaimed water contains some toxic contaminants, which will cause ecological and health risks. The objective of this study is to explore the relationship between developmental toxicities and relev...

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Autores principales:	Chun Wang, Zi-Xi Yuan, Yao-Yao Liu, Qian-Yuan Wu, Ying-Xue Sun
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2021
Materias:	Zebrafish embryos Reclaimed water Developmental toxicity Basic water quality parameters Free ammonia Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/ca5ccc1767804c069062cd11e66fc5ae
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spelling	oai:doaj.org-article:ca5ccc1767804c069062cd11e66fc5ae2021-11-28T04:38:46ZRelative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters2666-445310.1016/j.watcyc.2021.11.003https://doaj.org/article/ca5ccc1767804c069062cd11e66fc5ae2021-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666445321000088https://doaj.org/toc/2666-4453Reclaimed water recharging rivers is an important way to solve the problem of water shortage. However, reclaimed water contains some toxic contaminants, which will cause ecological and health risks. The objective of this study is to explore the relationship between developmental toxicities and relevant water quality parameters. Zebrafish embryos were exposed to secondary effluent, wastewater with advanced treatment (Tertiary treatment effluent) and blank (Aerated tap water). The samples taken in April showed higher biological toxicity to embryos, as the maximum value of mortality and malformation reached to 47.5 % for secondary effluent, 75 % for wastewater with advance treatment, while the blank was just 2 % at 120 hours post fertilization. The tested samples also showed significantly adverse effect on hatchability of zebrafish. The hatching rates of embryos exposed to secondary effluent and tertiary treatment effluent were much lower than blank. And significant delay in hatching time existed during the hatching period. The advanced treatment did not show beneficial effects for reducing acute toxicity. The main factor resulted in hatching inhibition may be ammonia especially the free ammonia, as it showed highest coefficient with hatching rate. The no observed effect concentration (NOEC) of ammonia for mortality and malformation were 5 mg/L and 10 mg/L respectively. The lowest observed effect concentration (LOEC) of ammonia for body length and hatchability were both 2 mg/L, while the concentration of free ammonia was 0.19 mg/L. Considering the biological toxicity of ammonia on aquatic organism, the discharge concentration of ammonia is advised to be controlled below 2 mg/L.Chun WangZi-Xi YuanYao-Yao LiuQian-Yuan WuYing-Xue SunKeAi Communications Co., Ltd.articleZebrafish embryosReclaimed waterDevelopmental toxicityBasic water quality parametersFree ammoniaEnvironmental technology. Sanitary engineeringTD1-1066ENWater Cycle, Vol 2, Iss , Pp 85-90 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Zebrafish embryos Reclaimed water Developmental toxicity Basic water quality parameters Free ammonia Environmental technology. Sanitary engineering TD1-1066
spellingShingle	Zebrafish embryos Reclaimed water Developmental toxicity Basic water quality parameters Free ammonia Environmental technology. Sanitary engineering TD1-1066 Chun Wang Zi-Xi Yuan Yao-Yao Liu Qian-Yuan Wu Ying-Xue Sun Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters
description	Reclaimed water recharging rivers is an important way to solve the problem of water shortage. However, reclaimed water contains some toxic contaminants, which will cause ecological and health risks. The objective of this study is to explore the relationship between developmental toxicities and relevant water quality parameters. Zebrafish embryos were exposed to secondary effluent, wastewater with advanced treatment (Tertiary treatment effluent) and blank (Aerated tap water). The samples taken in April showed higher biological toxicity to embryos, as the maximum value of mortality and malformation reached to 47.5 % for secondary effluent, 75 % for wastewater with advance treatment, while the blank was just 2 % at 120 hours post fertilization. The tested samples also showed significantly adverse effect on hatchability of zebrafish. The hatching rates of embryos exposed to secondary effluent and tertiary treatment effluent were much lower than blank. And significant delay in hatching time existed during the hatching period. The advanced treatment did not show beneficial effects for reducing acute toxicity. The main factor resulted in hatching inhibition may be ammonia especially the free ammonia, as it showed highest coefficient with hatching rate. The no observed effect concentration (NOEC) of ammonia for mortality and malformation were 5 mg/L and 10 mg/L respectively. The lowest observed effect concentration (LOEC) of ammonia for body length and hatchability were both 2 mg/L, while the concentration of free ammonia was 0.19 mg/L. Considering the biological toxicity of ammonia on aquatic organism, the discharge concentration of ammonia is advised to be controlled below 2 mg/L.
format	article
author	Chun Wang Zi-Xi Yuan Yao-Yao Liu Qian-Yuan Wu Ying-Xue Sun
author_facet	Chun Wang Zi-Xi Yuan Yao-Yao Liu Qian-Yuan Wu Ying-Xue Sun
author_sort	Chun Wang
title	Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters
title_short	Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters
title_full	Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters
title_fullStr	Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters
title_full_unstemmed	Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters
title_sort	relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters
publisher	KeAi Communications Co., Ltd.
publishDate	2021
url	https://doaj.org/article/ca5ccc1767804c069062cd11e66fc5ae
work_keys_str_mv	AT chunwang relativedevelopmentaltoxicitiesofreclaimedwatertozebrafishembryosandtherelationshipwithrelevantwaterqualityparameters AT zixiyuan relativedevelopmentaltoxicitiesofreclaimedwatertozebrafishembryosandtherelationshipwithrelevantwaterqualityparameters AT yaoyaoliu relativedevelopmentaltoxicitiesofreclaimedwatertozebrafishembryosandtherelationshipwithrelevantwaterqualityparameters AT qianyuanwu relativedevelopmentaltoxicitiesofreclaimedwatertozebrafishembryosandtherelationshipwithrelevantwaterqualityparameters AT yingxuesun relativedevelopmentaltoxicitiesofreclaimedwatertozebrafishembryosandtherelationshipwithrelevantwaterqualityparameters
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Relative developmental toxicities of reclaimed water to zebrafish embryos and the relationship with relevant water quality parameters

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