环境工程学报2025，Vol.19Issue(8)：1882-1889,8.DOI:10.12030/j.cjee.202412083
蛋白核小球藻与微污染物对乙酰氨基酚的相互影响
Interactions between Chlorella pyrenoidosa and micropollutants on acetaminophen
摘要
Abstract
In recent years,the accumulation of micropollutants(particularly acetaminophen,AAP)in aquatic environments,,has posed significant threats to ecosystems and organism health.This study investigated the mutual effects between Chlorella pyrenoidosa and AAP by exposing the algae to five concentrations(0,25,50,75,and 100 mg·L-1,designated as CK,L1,L2,H1,and H2 groups,respectively).Key parameters including growth inhibition rate,superoxide dismutase(SOD)and catalase(CAT)activities,malondialdehyde(MDA)content,and AAP removal efficiency were systematically analyzed.The results demonstrated a characteristic hormetic response in Chlorella pyrenoidosa under AAP exposure.Low concentrations(L1/L2 groups,25-50 mg·L-1)stimulated algal growth,whereas high concentrations(H1/H2 groups,75-100 mg·L-1)exerted inhibition.Low AAP caused negligible membrane damage(stable MDA levels).High AAP induced transient lipid peroxidation(MDA initially surged then declined via self-regulation).Upregulated SOD/CAT activities during early exposure mitigated oxidative stress.Enzymatic activities progressively declined with prolonged exposure.Additionally,chlorella pyrenoidosa exhibited remarkable differential removal efficiency for AAP:＞96％removal for low-concentration AAP,and＜40％removal efficiency for high-concentration AAP.This study mechanistically reveals the dose-dependent interplay between chlorella pyrenoidosa and AAP,providing critical insights for risk assessment and bioremediation strategies of micropollutants.关键词
对乙酰氨基酚/蛋白核小球藻/生长抑制率/抗氧化酶/丙二醛Key words
acetaminophen/chlorella pyrenoidosa/growth inhibition rate/antioxidant enzymes/malondialdehyde分类
资源环境引用本文复制引用
张骁文,刘月敏,白滔,杨珍珍,庞雅旭..蛋白核小球藻与微污染物对乙酰氨基酚的相互影响[J].环境工程学报,2025,19(8):1882-1889,8.基金项目
天津科技企业特派员资助项目(24YDTPJC00810) （24YDTPJC00810）
