Dual-emission ratiometric fluorescent sensor based molecularly imprinted nanoparticles for visual detection of okadaic acid in seawater and sediment

doi:10.1016/j.snb.2021.130465

	Dual-emission ratiometric fluorescent sensor based molecularly imprinted nanoparticles for visual detection of okadaic acid in seawater and sediment
	Lian, Ziru 1; Zhao, Min 1; Wang, Jiangtao 2; Yu, Ren-Cheng 3,4
	2021-11-01
发表期刊	SENSORS AND ACTUATORS B-CHEMICAL
卷号	346 页码:7
通讯作者	Lian, Ziru([email protected])
摘要	A 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.
关键词	Okadaic acid Seawater and sediment Ratiometric fluorescent sensor Visual detection Surface imprinting Carbon dots
DOI	10.1016/j.snb.2021.130465
收录类别	SCI
语种	英语
资助项目	Shandong 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研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
WOS类目	Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
WOS记录号	WOS:000692073300002
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/176359
专题	海洋生态与环境科学重点实验室
通讯作者	Lian, Ziru
作者单位	1.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
推荐引用方式 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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