A 3D-printed self-propelled, highly sensitive mini-motor for underwater pesticide detection

Luo, Qingjiao; Yu, Fen; Yang, Fan; Yang, Cheng; Qiu, Ping; Wang, Xiaolei

doi:10.1016/j.talanta.2018.02.059

Cited by 16 publications

(6 citation statements)

References 45 publications

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“…A variety of Rhodamine derivatives have been reported in the literature and are generally available via straightforward synthetic procedures . Rhodamines and their derivatives have been used for the detection of multiple classes of analytes, including cations, anions, and pesticides, and have also been used in biological imaging applications. − …”

Section: Common Fluorophoresmentioning

confidence: 99%

Supramolecular Luminescent Sensors

2018

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There is great need for stand-alone luminescence-based chemosensors that exemplify selectivity, sensitivity, and applicability and that overcome the challenges that arise from complex, real-world media. Discussed herein are recent developments toward these goals in the field of supramolecular luminescent chemosensors, including macrocycles, polymers, and nanomaterials. Specific focus is placed on the development of new macrocycle hosts since 2010, coupled with considerations of the underlying principles of supramolecular chemistry as well as analytes of interest and common luminophores. State-of-the-art developments in the fields of polymer and nanomaterial sensors are also examined, and some remaining unsolved challenges in the area of chemosensors are discussed. CONTENTS 4.4. Explosives 4.5. Pharmaceutical Agents 4.6. Biologically Relevant 4.6.1. Adenosine Triphosphate (ATP)

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Section: Common Fluorophoresmentioning

confidence: 99%

Supramolecular Luminescent Sensors

2018

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“…The AChE concentration was fixed at 1U•mL -1 , dropping 5 µL of the previously prepared solution according to section 2.3. This amount was selected because it is easy to work with and the expense for the reagent is minimal [25]. The optimal concentration of AChCl solution was obtained after testing different concentrations from 2 to 15 mM, by adding 1 µL AChCl, three replicates each and adding 10 µL of BSA solution on the sampling zone so that the enzyme and substrate reach the sensing area and react.…”

Section: Design Of μPad and Optimization Of Experimental Conditionsmentioning

confidence: 99%

Bioactive microfluidic paper device for pesticide determination in waters

Fernández-Ramos

Ogunneye

Babarinde

et al. 2020

Talanta

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This work presents a new optical microfluidic paper biosensor for the detection of organophosphate pesticides and carbamate pesticides. The assay strip is composed of a paper support (1×17.6 mm) onto which acetylcholine esterase (AChE) and acetylcholine chloride (AChCl) are deposited, in such a way that there is a small hole between them that ensures that they only come into contact in the reaction zone when they are carried by a solution of the sample by lateral flow to the reaction zone containing bromocresol purple (BCP) as the pH indicator, immobilized by sol-gel. The sensor operates at room temperature and the rate of the inhibited reaction serves as an analytical signal, which is measured using a camera by quantifying the appropriate colour coordinate. Calibration curves were obtained for chlorpyrifos and carbaryl, with a useful concentration range from 0.24 to 20 µg•L -1 for carbaryl and from 2.00 to 45 µg•L -1 for chlorpyrifos. The detection limits were 0.24 and 2.00 µg•L -1 , respectively, and with reproducibility around 4.2-5.5%. The method was applied to the determination of pesticides in different water samples, with no sample preparation.

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“…El elemento de reconocimiento biológico descrito de forma habitual para biosensores son las enzimas como la acetilcolinesterasa (AChE), butirilcolinesterasa (BChE), Tirosinasa y Fosfatasa, que permite la detección de una familia de compuestos orgánicos fosforados y carbamatos, basado en la acción de la enzima acetilcolinesterasa (AChE) [76,77]. La desventajas más significativa es la selectividad para Clorpirifós, porque en matrices ambientales la actividad enzimática se ve afectada por otros compuestos orgánicos como los piretroides, las triazinas, diferentes hidrocarburos aromáticos policíclicos (HAPs) y por compuestos inorgánico que interfieren e inhiben la actividad enzimática como los metales pesados, iones metálicos, como Hg 2+ , Cd 2+ , Cu 2+ y Pb 2+ por tanto, la presencia de iones y otros compuestos tóxicos son las principales limitaciones para el uso de enzimas en muestras ambientales [34,70,78].…”

Section: B Las Técnicas Analíticas De Biosensoresunclassified

Influencia de la degradación del Clorpirifos en la detección analítica utilizando biosensores: revisión del estado actual y aspectos futuros

2021

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El Clorpirifós (CP) es un pesticida ampliamente utilizado, que se relaciona a diversos daños en salud y que ha obtenido importancia, dado a su ubicuidad en todas las matrices ambientales, unido a la necesidad de un monitoreo oportuno para evaluar el estado y tasas de descarga al medioambiente. Por su parte, los factores ambientales favorecen la degradación de CP y disipación en el medio ambiente, pero, dificulta su trazabilidad ambiental y detección real en las diversas matrices ambientales. El uso de biosensores proporciona técnicas analíticas prometedoras para la detección de diversos compuestos de importancia ambiental como lo es el CP en la actualidad, pero se desconoce si la degradación natural de CP afectaría el correcto reconocimiento de CP por parte de los biosensores, influyendo en su uso como herramienta de trazabilidad de descarga de CP al medioambiente. El objetivo principal de esta revisión es abordar los recientes avances de biosensores para la detección de CP, sus desafíos en la detección en muestras reales asociados a la degradación de CP y los aspectos futuros asociados al monitoreo ambiental, trazabilidad y detección del CP, que constituye una amenaza importante para la salud humana.

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A 3D-printed self-propelled, highly sensitive mini-motor for underwater pesticide detection

Cited by 16 publications

References 45 publications

Supramolecular Luminescent Sensors

Supramolecular Luminescent Sensors

Bioactive microfluidic paper device for pesticide determination in waters

Influencia de la degradación del Clorpirifos en la detección analítica utilizando biosensores: revisión del estado actual y aspectos futuros

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