Fast simultaneous detection of three pesticides by a White Light Reflectance Spectroscopy sensing platform

Koukouvinos, Georgios; Τsialla, Zoi; Petrou, Panagiota; Μισιακός, Κωνσταντίνος; Goustouridis, D.; Moreno, Ana Uclés; Fernández‐Alba, Amadeo R.; Raptis, Ioannis; Kakabakos, Sotirios

doi:10.1016/j.snb.2016.09.035

Cited by 35 publications

(18 citation statements)

References 42 publications

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“…Limit of detection (LOD) in ppm HPLC-MS 0.014 [6] HPLC/GC-MS 0.01-0.05 [15] HPLC-UV detector 0.01 [5] ELISA 0.110-3 [19] Capillary electrophoresis 0.1-1 [81] White light reflectance spectroscopy 0.06 [82] Chemi-impedimetric sensor 0.0016-0.0042 (this work)…”

Section: Methodsmentioning

confidence: 99%

MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors

et al. 2020

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Due to its deleterious effects on health, development of new methods for detection and removal of pesticide residues in primary and derived agricultural products is a research topic of great importance. Among them, imazalil (IMZ) is a widely used post‐harvest fungicide with good performances in general, and is particularly applied to prevent green mold in citrus fruits. In this work, a composite film for the impedimetric sensing of IMZ built from metal‐organic framework nanocrystallites homogeneously distributed on a conductive poly(3,4‐ethylene dioxythiophene) (PEDOT) layer is presented. The as‐synthetized thin films are produced via spin‐coating over poly(ethylene terephtalate (PET) substrate following a straightforward, cost‐effective, single‐step procedure. By means of impedance spectroscopy, electric transport properties of the films are studied, and high sensitivity towards IMZ concentration in the range of 15 ppb to 1 ppm is demonstrated (featuring 1.6 and 4.2 ppb limit of detection, when using signal modulus and phase, respectively). The sensing platform hereby presented could be used for the construction of portable, miniaturized, and ultrasensitive devices, suitable for pesticide detection in food, wastewater effluents, or the assessment of drinking‐water quality.

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Section: Methodsmentioning

confidence: 99%

MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors

et al. 2020

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“…In Figure 7a, the CRP calibration curves obtained using chips modified with 2% The stability of the anti-CRP antibodies immobilized onto chips modified with APTES following different protocols was also tested through the performance of repeated cycles of immunoreactions and surface regeneration, that is, removal of immune complexes formed during the assay. For surface regeneration, a 0.1 M glycine-HCl buffer, pH 2.5, was used, which has been determined as optimal for this particular antibody in previous publications (Koukouvinos et al, 2018;Koukouvinos, Metheniti, et al, 2017;Koukouvinos, Τsialla, et al, 2017). The results obtained from chips modified with 2% ( F I G U R E 7 (a) Typical CRP calibration curves obtained from chips modified with 2% (v/v) APTES in water (black squares), 5% (v/v) APTES in ethanol (red squares) and 5% (v/v) APTES in ethanol and glutaraldehyde (blue squares).…”

Section: Development Of Wlrs Sensor For the Immunochemical Determinmentioning

confidence: 99%

Functionalization of silicon dioxide and silicon nitride surfaces with aminosilanes for optical biosensing applications

et al. 2020

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“…For the label-free and real-time detection of chlorpyrifos in water and wine samples, Koukouvinos et al [107] developed a biosensor based on white light reflectance spectroscopy (WLRS) (Figure 4a) and a competitive immunoassay format (Figure 4b). The LOD was 0.6 ng/mL with an analysis time of about 10 min.…”

Section: Immunosensors For Pesticide Determinationmentioning

confidence: 99%

Trends and Perspectives in Immunosensors for Determination of Currently-Used Pesticides: The Case of Glyphosate, Organophosphates, and Neonicotinoids

et al. 2019

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Pesticides, due to their intensive use and their peculiar chemical features, can persist in the environment and enter the trophic chain, thus representing an environmental risk for the ecosystems and human health. Although there are several robust and reliable standard analytical techniques for their monitoring, the high frequency of contamination caused by pesticides requires methods for massive monitoring campaigns that are capable of rapidly detecting these compounds in many samples of different origin. Immunosensors represent a potential tool for simple, rapid, and sensitive monitoring of pesticides. Antibodies coupled to electrochemical or optical transducers have resulted in effective detection devices. In this review, the new trends in immunosensor development and the application of immunosensors for the detection of pesticides of environmental concern—such as glyphosate, organophosphates, and neonicotinoids—are described.

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Fast simultaneous detection of three pesticides by a White Light Reflectance Spectroscopy sensing platform

Cited by 35 publications

References 42 publications

MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors

MOF@PEDOT Composite Films for Impedimetric Pesticide Sensors

Functionalization of silicon dioxide and silicon nitride surfaces with aminosilanes for optical biosensing applications

Trends and Perspectives in Immunosensors for Determination of Currently-Used Pesticides: The Case of Glyphosate, Organophosphates, and Neonicotinoids

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