Removal of Microcystin-LR in lake water sample by hydrophilic mesoporous silica composites under high-throughput MALDI-TOF MS detection platform  

作　　者：Wantong Zhang Zixing Xu Guofei Dai Zhijian Li Chunhui Deng 

机构地区：[1]Department of Chemistry,Institute of Metabolism&Integrate Biology(IMIB),Fudan University,Shanghai 200433,China [2]Jiangxi Key Laboratory of Organic Chemistry,Jiangxi Science and Technology Normal University,Nanchang 330013,China [3]Jiangxi Academy of Water Science and Engineering,Nanchang 330029,China

出　　处：《Chinese Chemical Letters》2024年第5期380-385,共6页中国化学快报（英文版）

基　　金：financially supported by National Key R&D Program of China(No.2018YFA0507501);the National Natural Science Foundation of China(Nos.22074019,21425518,22004017,22205085,and 32160305);Key Science and Technology Project of Jiangxi Province(Nos.20213AAG01012 and 2022KSG01004);Water Science and Technology Project of Jiangxi Province(Nos.202124ZDKT19 and 202223YBKT07);Shanghai Sailing Program(No.20YF1405300).

摘　　要：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 various 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(mSiO_(2))nanocomposites(Fe_(3)O_(4)@mSiO_(2)-IDA)were facilely synthesized which possessed the merits of large surface area(188.21 m^(2)/g),accessible porosity(2.66 nm),excellent hydrophilicity and rapid responsiveness to magnetic 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 spectrometry(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.

关 键 词：MICROCYSTIN-LR Mesoporous silica Magnetic composites MALDI-TOF MS analysis 

分 类 号：TB332[一般工业技术—材料科学与工程] X52[环境科学与工程—环境工程]