Abstract
Microcystins(MCs),a family of cyclic heptapeptide cyanotoxins,exists in aquatic environment where cyanobacterial bloom happens,which will accumulate in aquatic organisms and transfer through the food chain to higher trophic levels,posing a health risk to both animals and human bodies.Among var-ious MCs,Microcystin-LR(MC-LR)is worthiest studied for its strong toxicity,ubiquity and widespread.Here in this work,iminodiacetic acid(IDA)decorated magnetic mesoporous silica(mSiO2)nanocom-posites(Fe3O4@mSiO2-IDA)were facilely synthesized which possessed the merits of large surface area(188.21 m2/g),accessible porosity(2.66 nm),excellent hydrophilicity and rapid responsiveness to mag-netic field.Then the composites were successfully employed to the removal process of Microcystin-LR in real water samples followed by Matrix-assisted laser desorption/ionization time-of-flight mass spectrom-etry(MALDI-TOF MS)analysis,achieving the removal efficiency above 92.5％even after ten recycles of the composites.It provided a potential method for removing MC-LR in aqueous environment with high effectiveness,lower costs and less secondary contamination.
基金项目
国家重点研发计划(2018YFA0507501)
国家自然科学基金(22074019)
国家自然科学基金(21425518)
国家自然科学基金(22004017)
国家自然科学基金(22205085)
国家自然科学基金(32160305)
Key Science and Technology Project of Jiangxi Province(20213AAG01012)
Key Science and Technology Project of Jiangxi Province(2022KSG01004)
Water Science and Technology Project of Jiangxi Province(202124ZDKT19)
Water Science and Technology Project of Jiangxi Province(202223YBKT07)
Shanghai Sailing Program(20YF1405300)
维普
万方数据