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

Zhang, Zhong; Ma, Xin; Jia, Mengfan; Li, Bowei; Rong, Jianhui; Yang, Xingbin

doi:10.1039/c8an02051e

Cited by 80 publications

(20 citation statements)

References 44 publications

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“…本课题组 [38] 之前制备的CdTe QDs印迹纸芯片, 响应时间为15 min. 本研究中芯片响应时间明马昕等: 环境友好型比率荧光微流控纸芯片快速检测苯醚甲环唑显缩短, 可能有两点原因: (1) 印迹壳层变薄, 印迹材料用量一样但之前只有一种荧光材料的修饰 [38] , 而本研 [39] . Xu等 [ [28,40] .…”

Section: 合物不仅对目标污染物具有较强的亲和力而且由于unclassified

Environmentally friendly ratiometric fluorescent microfluidic paper chip for rapid detection of difenoconazole

Hao

Zhong

et al. 2020

Sci. Sin.-Chim

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Opinion on the recent development of environmentally friendly marine anti-fouling coating SCIENCE CHINA Technological Sciences 59, 1968 (2016); Synthesis and characterization of an environmentally friendly PHBV/PEG copolymer network as a phase change material SCIENCE CHINA Chemistry 56, 716 (2013); Metal recycling from waste memory modules efficiently and environmentally friendly by low-temperature alkali melts SCIENCE CHINA Technological Sciences L-Proline catalyzed aldol reactions between acetone and aldehydes in supercritical fluids: An environmentally friendly reaction procedure

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Section: 合物不仅对目标污染物具有较强的亲和力而且由于unclassified

Environmentally friendly ratiometric fluorescent microfluidic paper chip for rapid detection of difenoconazole

Hao

Zhong

et al. 2020

Sci. Sin.-Chim

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“…Figure 2 presents the preparation process of MIFs based on embedding fluorescent materials into MIPs [45]. MIFs are highly selective, highly sensitive, specific, and stable compared to conventional sensors [46], and have been widely used to detect many kinds of pollutants [47,48,49,50,51].…”

Section: Construction Of a Mifsmentioning

confidence: 99%

Recent Advances and Perspectives of Molecularly Imprinted Polymer-Based Fluorescent Sensors in Food and Environment Analysis

Liu

Huang

et al. 2019

Nanomaterials

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Molecular imprinting technology (MIT), also known as molecular template technology, is a new technology involving material chemistry, polymer chemistry, biochemistry, and other multi-disciplinary approaches. This technology is used to realize the unique recognition ability of three-dimensional crosslinked polymers, called the molecularly imprinted polymers (MIPs). MIPs demonstrate a wide range of applicability, good plasticity, stability, and high selectivity, and their internal recognition sites can be selectively combined with template molecules to achieve selective recognition. A molecularly imprinted fluorescence sensor (MIFs) incorporates fluorescent materials (fluorescein or fluorescent nanoparticles) into a molecularly imprinted polymer synthesis system and transforms the binding sites between target molecules and molecularly imprinted materials into readable fluorescence signals. This sensor demonstrates the advantages of high sensitivity and selectivity of fluorescence detection. Molecularly imprinted materials demonstrate considerable research significance and broad application prospects. They are a research hotspot in the field of food and environment safety sensing analysis. In this study, the progress in the construction and application of MIFs was reviewed with emphasis on the preparation principle, detection methods, and molecular recognition mechanism. The applications of MIFs in food and environment safety detection in recent years were summarized, and the research trends and development prospects of MIFs were discussed.

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“…The performance of microfluidic analytical devices on medical and fabrication scenarios is eye-catching due to their strengths of being portable, reagent-efficient, inexpensive, integrated, rapid in analysis, and power-effective [15], which make them an ideal solution for public health control even in low-resource settings. Therefore, abundant pesticide assays are performed on microfluidic devices [16,17,18,19,20]. Duford et al proposed a centrifugal microfluidic device which enables the integration of multiple processing procedures of enzyme inhibition-based determination while retaining the simultaneous detection of multiple samples or replicates in a single assay [16].…”

Section: Introductionmentioning

confidence: 99%

“…Duford et al proposed a centrifugal microfluidic device which enables the integration of multiple processing procedures of enzyme inhibition-based determination while retaining the simultaneous detection of multiple samples or replicates in a single assay [16]. Furthermore, in 2018, Zhang et al proposed a fluorescent pesticide determination system on a microfluidic paper chip, which makes ordinary material the protector against health hazards, providing a low-resource solution for the ubiquitous need for food protection [17].…”

Section: Introductionmentioning

confidence: 99%

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Pesticide Residues Identification by Optical Spectrum in the Time-Sequence of Enzyme Inhibitors Performed on Microfluidic Paper-Based Analytical Devices (µPADs)

et al. 2019

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Pesticides vary in the level of poisonousness, while a conventional rapid test card only provides a general “absence or not” solution, which cannot identify the various genera of pesticides. In order to solve this problem, we proposed a seven-layer paper-based microfluidic chip, integrating the enzyme acetylcholinesterase (AChE) and chromogenic reaction. It enables on-chip pesticide identification via a reflected light intensity spectrum in time-sequence according to the different reaction efficiencies of pesticide molecules and assures the optimum temperature for enzyme activity. After pretreatment of figures of reflected light intensity during the 15 min period, the figures mainly focused on the reflected light variations aroused by the enzyme inhibition assay, and thus, the linear discriminant analysis showed satisfying discrimination of imidacloprid (Y = −1.6525X − 139.7500), phorate (Y = −3.9689X − 483.0526), and avermectin (Y = −2.3617X − 28.3082). The correlation coefficients for these linearity curves were 0.9635, 0.8093, and 0.9094, respectively, with a 95% limit of agreement. Then, the avermectin class chemicals and real-world samples (i.e., lettuce and rice) were tested, which all showed feasible graphic results to distinguish all the chemicals. Therefore, it is feasible to distinguish the three tested kinds of pesticides by the changes in the reflected light spectrum in each min (15 min) via the proposed chip with a high level of automation and integration.

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

Abstract: Novel fluorescent microfluidic paper chips were developed by the combination of molecularly imprinted polymers and microfluidic paper chips with CdTe quantum dots for the specific recognition and sensitive detection of the pesticide 2,4-D.

Cited by 80 publications

References 44 publications

Environmentally friendly ratiometric fluorescent microfluidic paper chip for rapid detection of difenoconazole

Environmentally friendly ratiometric fluorescent microfluidic paper chip for rapid detection of difenoconazole

Recent Advances and Perspectives of Molecularly Imprinted Polymer-Based Fluorescent Sensors in Food and Environment Analysis

Pesticide Residues Identification by Optical Spectrum in the Time-Sequence of Enzyme Inhibitors Performed on Microfluidic Paper-Based Analytical Devices (µPADs)

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