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

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

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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.

Microcystin-LRMesoporous silicaMagnetic compositesMALDI-TOF MS analysis

Wantong Zhang、Zixing Xu、Guofei Dai、Zhijian Li、Chunhui Deng

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Department of Chemistry,Institute of Metabolism & Integrate Biology(IMIB),Fudan University,Shanghai 200433,China

Jiangxi Academy of Water Science and Engineering,Nanchang 330029,China

Jiangxi Key Laboratory of Organic Chemistry,Jiangxi Science and Technology Normal University,Nanchang 330013,China

国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Key Science and Technology Project of Jiangxi ProvinceKey Science and Technology Project of Jiangxi ProvinceWater Science and Technology Project of Jiangxi ProvinceWater Science and Technology Project of Jiangxi ProvinceShanghai Sailing Program

2018YFA0507501220740192142551822004017222050853216030520213AAG010122022KSG01004202124ZDKT19202223YBKT0720YF1405300

2024

10.1016/j.cclet.2023.109135

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(5)
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