净水技术2026，Vol.45Issue(1)：35-44,10.DOI:10.15890/j.cnki.jsjs.2026.01.005
聚苯乙烯纳米塑料对铜绿微囊藻生长的毒性效应
Toxic Effect of Polystyrene Nanoplastics on Growth of Microcystis aeruginosa
摘要
Abstract
[Objective]This paper investigates the effects of polystyrene nanoplastics(PS-NPs)on the growth of Microcystis aeruginosa,understands the stress and toxic effects of PS-NPs on Microcystis aeruginosa,and provides theoretical basis for the protection and restoration of freshwater ecosystems.[Methods]This paper conducted cultivation experiments on Microcystis aeruginosa using culture medium containing different concentrations of PS-NPs,and analyzed the growth,photosynthetic characteristics,antioxidant system,and cell surface morphology of Microcystis aeruginosa by PS-NPs.[Results]Under the 15 day exposure experiment,it was positively correlated with the concentration of PS-NPs for the growth rate,photosynthetic efficiency,and oxidative damage intensity of Microcystis aeruginosa.The inhibition rate was over 70％of chlorophyll-a(Chl-a)concentration when the concentration was more than 50 mg/L of PS-NPs on the 10th day of the experiment.PS-NPs mainly reduced the efficiency of algal cell light energy utilization and photosynthesis by inhibiting the electron transfer of algal photoreaction,and led to the accumulation of malondialdehyde(MDA)and lipid peroxidation in algal cells.Scanning electron microscopy revealed that PS-NPs could aggregate on the surface of algal cells and cracks.Especially at higher concentrations.[Conclusion]PS-NPs could limit the normal transfer of energy by inhibiting the electron transfer in algal photoreaction,thereby affecting the normal growth of algae at higher concentrations.PS-NPs can promote reactive oxygen species in Microcystis aeruginosa,thereby disrupting its physiological balance.PS-NPs are prone to heterogeneous aggregation with algal cells,leading to surface structure disorder and deformation.关键词
纳米塑料/铜绿微囊藻/光合特性/抗氧化系统/毒性效应Key words
nanoplastic/Microcystis aeruginosa/photosynthetic characteristic/antioxidant system/toxic effect分类
资源环境引用本文复制引用
汪小雄,杨楠,高静思..聚苯乙烯纳米塑料对铜绿微囊藻生长的毒性效应[J].净水技术,2026,45(1):35-44,10.基金项目
国家自然科学基金(51978415) （51978415）
广东省教育厅重点领域专项(2022ZDZX4100) （2022ZDZX4100）
深圳职业技术大学科技项目(6020320001K0) （6020320001K0）
