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Dual-emission ratiometric fluorescent sensor based molecularly imprinted nanoparticles for visual detection of okadaic acid in seawater and sediment
Lian, Ziru1; Zhao, Min1; Wang, Jiangtao2; Yu, Ren-Cheng3,4
2021-11-01
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
Volume346Pages:7
Corresponding AuthorLian, Ziru(yoyo-lzr@hotmail.com)
AbstractA dual-emitting ratiometric fluorescence nanosensor based on novel molecularly imprinted polymers (MIPs), which possesses self-referencing ability by nitrobenzoxadiazole (NBD) as recognition signal and new carbon dots (CDs) as interior label, has been prepared for sensitive and visual detection of okadaic acid (OA) in seawater and sediment samples. The analyte can rapidly enhance the fluorescence intensity of NBD at 549 nm, but will not change the CDs' fluorescence signal at 667 nm. The nanosensor has a linear fluorescence enhancement response in the range of 100 similar to 1770 ng L-1 with a limit of detection of 25 ng L-1, and excellent selective recognition for OA over its interferences. The ratiometric fluorescence nanosensor has been successfully applied to detect OA in seawater and sediment samples. The results show that the nanosensor has high recoveries at four spiking levels of OA ranged from 90.0 % to 107.0 % with the relative standard deviation less than 4.1 % (n = 3). More importantly, a reliable visual sense change with two distinct color tonality from bright pink to yellow green can be easily differentiated by the naked eyes during fluorescence analysis, which demonstrates promising potential for the applications of molecularly imprinted sensors in trace analysis of marine environmental matrix.
KeywordOkadaic acid Seawater and sediment Ratiometric fluorescent sensor Visual detection Surface imprinting Carbon dots
DOI10.1016/j.snb.2021.130465
Indexed BySCI
Language英语
Funding ProjectShandong Province Natural Science Foundation of China[ZR2019MD026] ; Open Fund of CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences[KLMEES202003] ; National Natural Science Foundation of China[U1806202]
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
WOS IDWOS:000692073300002
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/176359
Collection海洋生态与环境科学重点实验室
Corresponding AuthorLian, Ziru
Affiliation1.Shandong Univ, Marine Coll, Weihai 264209, Peoples R China
2.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Lian, Ziru,Zhao, Min,Wang, Jiangtao,et al. Dual-emission ratiometric fluorescent sensor based molecularly imprinted nanoparticles for visual detection of okadaic acid in seawater and sediment[J]. SENSORS AND ACTUATORS B-CHEMICAL,2021,346:7.
APA Lian, Ziru,Zhao, Min,Wang, Jiangtao,&Yu, Ren-Cheng.(2021).Dual-emission ratiometric fluorescent sensor based molecularly imprinted nanoparticles for visual detection of okadaic acid in seawater and sediment.SENSORS AND ACTUATORS B-CHEMICAL,346,7.
MLA Lian, Ziru,et al."Dual-emission ratiometric fluorescent sensor based molecularly imprinted nanoparticles for visual detection of okadaic acid in seawater and sediment".SENSORS AND ACTUATORS B-CHEMICAL 346(2021):7.
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