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
Source PublicationANALYST
ISSN0003-2654
2019-02-21
Volume144Issue:4Pages:1282-1291
KeywordMOLECULARLY IMPRINTED POLYMERS SHELL-SELECTIVE RECOGNITION 2,4-DICHLOROPHENOXYACETIC ACID LIQUID-CHROMATOGRAPHY SURFACE SILICA DEVICE IMMUNOASSAY MEMBRANES EXPOSURE
MOST Discipline CatalogueChemistry, Analytical
DOI10.1039/c8an02051e
Contribution Rank[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
Department海岸带环境工程技术研究与发展中心
AbstractRapid 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.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordMOLECULARLY IMPRINTED POLYMERS ; SHELL-SELECTIVE RECOGNITION ; 2,4-DICHLOROPHENOXYACETIC ACID ; LIQUID-CHROMATOGRAPHY ; SURFACE ; SILICA ; DEVICE ; IMMUNOASSAY ; MEMBRANES ; EXPOSURE
WOS Research AreaChemistry, Analytical
WOS IDWOS:000459637300022
Funding OrganizationNational 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]
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24995
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境工程技术研究与发展中心
Affiliation1.Shaanxi Normal Univ, Shaanxi Engn Lab Food Green Proc & Safety Control, Coll Food Engn & Nutr Sci, Xian 710119, Shaanxi, 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.Univ Hong Kong, Sch Chinese Med, Li Ka Shing Fac Med, Pokfulam, 10 Sassoon Rd, Hong Kong, Peoples R China;
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
Recommended Citation
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.
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