Seasonal variation and potential risk assessment of microcystins in the sediments of Lake Taihu, China

	Seasonal variation and potential risk assessment of microcystins in the sediments of Lake Taihu, China
	Xue, Qingju; Steinman, Alan D.; Xie, Liqiang; Yao, Lei; Su, Xiaomei; Cao, Qing; Zhao, Yanyan; Cai, Yongjiu
刊名	ENVIRONMENTAL POLLUTION
	2020
卷号	259
英文摘要	High concentrations of microcystins (MCs) in sediment pose a serious hazard to aquatic and terrestrial organisms. Hence, we investigated the seasonal variation of dominant MCs (MC-LR, MC-RR and MC-YR) in sediments of Lake Taihu over four seasons for the first time. Sediment MCs varied seasonally (p < 0.01) with concentrations highest in August and lowest in February. The MCs were dominated by MC-LR (61.47%) with the content ranging from 0.02 to 2.37 mu g/g dry weight in sediment. The three MC congeners and their proportions were significantly correlated with latitude and longitude. Meiliang Bay in the north had the highest MCs of all sites, while the eastern part of the lake had a high level especially in August. Variation of MC-LR and MC-RR concentrations was significantly correlated (p < 0.05) with water temperature, dissolved total organic carbon, cyanobacteria density, total suspended solid particles, and total organic carbon and total nitrogen in sediment, while MC-YR was negatively correlated (p < 0.01) with nutrients in the water column and heavy metals in sediments. An ecological risk assessment suggested the MCs already pose significant adverse effects on Potamopyrgus antipodarum; although the adverse effects on humans were weak, children were at greater risk than adults. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20000]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Xue, Qingju,Steinman, Alan D.,Xie, Liqiang,et al. Seasonal variation and potential risk assessment of microcystins in the sediments of Lake Taihu, China[J]. ENVIRONMENTAL POLLUTION,2020,259.
APA	Xue, Qingju.,Steinman, Alan D..,Xie, Liqiang.,Yao, Lei.,Su, Xiaomei.,...&Cai, Yongjiu.(2020).Seasonal variation and potential risk assessment of microcystins in the sediments of Lake Taihu, China.ENVIRONMENTAL POLLUTION,259.
MLA	Xue, Qingju,et al."Seasonal variation and potential risk assessment of microcystins in the sediments of Lake Taihu, China".ENVIRONMENTAL POLLUTION 259(2020).