Occurrence and risk assessment of microcystin and its relationship with environmental factors in lakes of the eastern plain ecoregion, China
文献类型：期刊论文
| 作者 | Wan, Xiang; Steinman, Alan D.; Gu, Yurong; Zhu, Guangwei; Shu, Xiubo; Xue, Qingju; Zou, Wei; Xie, Liqiang |
| 刊名 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
 |
| 出版日期 | 2020 |
| 卷号 | 27期号:36页码:45095-45107 |
| 英文摘要 | The frequent occurrence of microcystins (MCs) in freshwater poses serious threats to the drinking water safety and health of human beings. Although MCs have been detected in individual fresh waters in China, little is known about their occurrence over a large geographic scale. An investigation of 30 subtropical lakes in eastern China was performed during summer 2018 to determine the MCs concentrations in water and their possible risk via direct water consumption to humans, and to assess the associated environmental factors. MCs were detected in 28 of 30 lakes, and the highest mean MCs concentrations occurred in Lake Chaohu (26.7 mu g/L), followed by Lake Taihu (3.11 mu g/L). MC-LR was the primary variant observed in our study, and MCs were mainly produced byMicrocystis,Anabaena(Dolicospermum), andOscillatoriain these lakes. Replete nitrogen and phosphorus concentrations, irradiance, and stable water column conditions were critical for dominance of MC-producing cyanobacteria and high MCs production in our study. Hazard quotients indicated that human health risk of MCs in most lakes was at moderate or low levels except Lakes Chaohu and Taihu. Nutrient control management is recommended to decrease the likelihood of high MCs production. Finally, we recommend the regional scale thresholds of total nitrogen and total phosphorus concentrations of 1.19 mg/L and 7.14 x 10(-2) mg/L, respectively, based on the drinking water guideline of MC-LR (1 mu g/L) recommended by World Health Organization. These targets for nutrient control will aid water quality managers to reduce human health risks created by exposure to MCs. |
| 源URL | [http://159.226.73.51/handle/332005/20173]  |
| 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 | Wan, Xiang,Steinman, Alan D.,Gu, Yurong,et al. Occurrence and risk assessment of microcystin and its relationship with environmental factors in lakes of the eastern plain ecoregion, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2020,27(36):45095-45107. |
| APA | Wan, Xiang.,Steinman, Alan D..,Gu, Yurong.,Zhu, Guangwei.,Shu, Xiubo.,...&Xie, Liqiang.(2020).Occurrence and risk assessment of microcystin and its relationship with environmental factors in lakes of the eastern plain ecoregion, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,27(36),45095-45107. |
| MLA | Wan, Xiang,et al."Occurrence and risk assessment of microcystin and its relationship with environmental factors in lakes of the eastern plain ecoregion, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 27.36(2020):45095-45107. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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