Deposition of CdTe quantum dots on microfluidic paper chips for rapid fluorescence detection of pesticide 2,4-D

doi:10.1039/c8an02051e

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 山东省海岸带环境工程技术研究中心

	Deposition of CdTe quantum dots on microfluidic paper chips for rapid fluorescence detection of pesticide 2,4-D
	Zhang, Z ; Ma, X ; Jia, MF ; Li, BW ; Rong, JH ; Yang, XB
刊名	ANALYST
	2019-02-21
卷号	144 期号:4 页码:1282-1291
关键词	MOLECULARLY IMPRINTED POLYMERS SHELL-SELECTIVE RECOGNITION 2,4-DICHLOROPHENOXYACETIC ACID LIQUID-CHROMATOGRAPHY SURFACE SILICA DEVICE IMMUNOASSAY MEMBRANES EXPOSURE
ISSN号	0003-2654
DOI	10.1039/c8an02051e
产权排序	[Zhang, Zhong ; Ma, Xin ; Jia, Mengfan ; Yang, Xingbin] Shaanxi Normal Univ, Shaanxi Engn Lab Food Green Proc & Safety Control, Coll Food Engn & Nutr Sci, Xian 710119, Shaanxi, Peoples R China ; [Zhang, Zhong ; Ma, Xin ; Jia, Mengfan ; Yang, Xingbin] Shaanxi Normal Univ, Shaanxi Key Lab Hazard Factors Assessment Proc &, Coll Food Engn & Nutr Sci, Xian 710119, Shaanxi, Peoples R China ; [Zhang, Zhong ; Rong, Jianhui] Univ Hong Kong, Sch Chinese Med, Li Ka Shing Fac Med, Pokfulam, 10 Sassoon Rd, Hong Kong, Peoples R China ; [Li, Bowei] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
文献子类	Article
英文摘要	Rapid detection of pesticides in fruits is an ongoing challenge. The objective of the present study was to develop novel fluorescent microfluidic paper chips for specific recognition and sensitive detection of the pesticide 2,4-D through the electron-transfer-induced fluorescence quenching mechanism. CdTe quantum dots (QDs) were deposited onto cellulose paper (base material) to yield imprinted paper chips (paper@QDs@MIPs). This method allows the transferability of the molecularly imprinted fluorescence sensor from the liquid phase to the solid phase (paper base) for rapid and portable analysis. The resultant imprinted paper chips were effectively characterized, and they exhibited ideal ordered spatial network structure, chemical stability, and fluorescence property. The paper@QDs@MIPs showed that 2,4-D binding significantly reduced the fluorescence intensity within less than 18 min, and it achieved satisfactory linearity in the range of 0.83-100 M and high detectability of 90 nM. The recognition specificity for 2,4-D relative to its analogues was shown, and the imprinting factor was 2.13. In addition, the recoveries of the spiked bean sprouts at three concentration levels ranged within 94.2-107.0%, with a relative standard deviation of less than 5.9%. Collectively, the device provided an effective platform for rapid recognition, convenience, and detection of trace food pollutants in complex matrices, thereby ensuring food safety and further promoting surface imprinting studies.
WOS关键词	MOLECULARLY IMPRINTED POLYMERS ; SHELL-SELECTIVE RECOGNITION ; 2,4-DICHLOROPHENOXYACETIC ACID ; LIQUID-CHROMATOGRAPHY ; SURFACE ; SILICA ; DEVICE ; IMMUNOASSAY ; MEMBRANES ; EXPOSURE
WOS研究方向	Chemistry, Analytical
语种	英语
WOS记录号	WOS:000459637300022
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China [31701705, 31671823] ; Hong Kong Scholars Program [XJ2017060] ; Key Laboratory of Coastal Environmental Process and Ecological Restoration [2018KFJJ01] ; Open Project Program of State Key Laboratory of Food Science and Technology, Nanchang University [SKLF-KF-201813] ; Fundamental Research Fund of the Central University in China [GK201803084]
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24995]
专题	烟台海岸带研究所_山东省海岸带环境工程技术研究中心
作者单位	1.Univ Hong Kong, Sch Chinese Med, Li Ka Shing Fac Med, Pokfulam, 10 Sassoon Rd, Hong Kong, Peoples R China; 2.Shaanxi Normal Univ, Shaanxi Key Lab Hazard Factors Assessment Proc &, Coll Food Engn & Nutr Sci, Xian 710119, Shaanxi, Peoples R China; 3.Shaanxi Normal Univ, Shaanxi Engn Lab Food Green Proc & Safety Control, Coll Food Engn & Nutr Sci, Xian 710119, Shaanxi, Peoples R China; 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Z,Ma, X,Jia, MF,et al. Deposition of CdTe quantum dots on microfluidic paper chips for rapid fluorescence detection of pesticide 2,4-D[J]. ANALYST,2019,144(4):1282-1291.
APA	Zhang, Z,Ma, X,Jia, MF,Li, BW,Rong, JH,&Yang, XB.(2019).Deposition of CdTe quantum dots on microfluidic paper chips for rapid fluorescence detection of pesticide 2,4-D.ANALYST,144(4),1282-1291.
MLA	Zhang, Z,et al."Deposition of CdTe quantum dots on microfluidic paper chips for rapid fluorescence detection of pesticide 2,4-D".ANALYST 144.4(2019):1282-1291.