湖泊科学2024，Vol.36Issue(1)：52-63,12.DOI:10.18307/2024.0113
高原富营养化湖泊杞麓湖微囊藻毒素分布特征、相关因子及其健康风险分析
Spatial distribution,related environmental factors and health risk assessment of micro-cystins in Lake Qilu,a eutrophic plateau lake
摘要
Abstract
Lake Qilu,a typical eutrophic plateau lake,the microcystin(MC)pollution caused by algal blooms in it will harm lake ecosystem and increase human health risks.To assess the pollution status and health risks of MCs in Lake Qilu Basin in autumn and winter,the surface water of Lake Qilu and seven major rivers entering the lake were sampled and analyzed,the temporal and spatial distribution characteristics of MCs isomers were analyzed.The relationship between MCs and water quality,phytoplankton and other environmental factors was investigated.The health risk posed by MCs was evaluated by human non-carcinogenic health risk.Our in-vestigation results showed that MCs concentration decreased from autumn to winter.In autumn,IMCs accounted for more than 99％,and in winter,IMCs concentration was close to EMCs concentration.MC-RR and MC-LR were the main MCs isomers.The concentration ratio of MC-RR in autumn was higher than those of MC-LR and MC-YR.MC-LR concentration in winter was the highest.MCs was positively correlated with Microcystis density and other biological factors,and negatively correlated with TN,TP and NH3-N nutrients.The risk index of MCs pollution in Lake Qilu ranged from 0.004 to 0.110,i.e.,very low or low risk level.The risk in winter was slightly higher than that in autumn.Further attention should be paid to the risk caused by EMCs pollution on the south bank and IMCs release in the lake.关键词
微囊藻毒素/杞麓湖/环境因子/时空分布/健康风险Key words
Microcystin/Lake Qilu/environmental factors/spatial and temporal distribution/health risk引用本文复制引用
王永强,国晓春,卢少勇,宋迪,蒋昀耕,杨莉园..高原富营养化湖泊杞麓湖微囊藻毒素分布特征、相关因子及其健康风险分析[J].湖泊科学,2024,36(1):52-63,12.基金项目
云南省高原湖泊流域污染过程与管理重点实验室开放基金项目和云南省科技厅科技计划项目(202203AC100002-03)联合资助. （202203AC100002-03）
