Luminol electrochemiluminescence with screen-printed electrodes for low-cost disposable oxidase-based optical sensors

The Analyst ◽  
2000 ◽  
Vol 125 (5) ◽  
pp. 789-791 ◽  
Author(s):  
B. Leca ◽  
L. J. Blum
Keyword(s):  
Optical Sensors ◽  
Low Cost ◽  
Screen Printed Electrodes ◽  
Screen Printed

scholarly journals Electrochemical (Bio)Sensors for Pesticides Detection Using Screen-Printed Electrodes

Biosensors ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 32 ◽  
Author(s):  
Beatriz Pérez-Fernández ◽  
Agustín Costa-García ◽  
Alfredo de la Escosura- Muñiz
Keyword(s):  
Mass Spectrometry ◽  
High Performance ◽  
Point Of Care ◽  
Low Cost ◽  
Review Article ◽  
Food Control ◽  
Food Contaminants ◽  
Screen Printed Electrodes ◽  
Analytical Tools ◽  
Screen Printed

Pesticides are among the most important contaminants in food, leading to important global health problems. While conventional techniques such as high-performance liquid chromatography (HPLC) and mass spectrometry (MS) have traditionally been utilized for the detection of such food contaminants, they are relatively expensive, time-consuming and labor intensive, limiting their use for point-of-care (POC) applications. Electrochemical (bio)sensors are emerging devices meeting such expectations, since they represent reliable, simple, cheap, portable, selective and easy to use analytical tools that can be used outside the laboratories by non-specialized personnel. Screen-printed electrodes (SPEs) stand out from the variety of transducers used in electrochemical (bio)sensing because of their small size, high integration, low cost and ability to measure in few microliters of sample. In this context, in this review article, we summarize and discuss about the use of SPEs as analytical tools in the development of (bio)sensors for pesticides of interest for food control. Finally, aspects related to the analytical performance of the developed (bio)sensors together with prospects for future improvements are discussed.

scholarly journals Electrochemical Properties of Screen-Printed Carbon Nano-Onion Electrodes

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3884
Author(s):  
Loanda R. Cumba ◽  
Adalberto Camisasca ◽  
Silvia Giordani ◽  
Robert J. Forster
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Limit Of Detection ◽  
Low Cost ◽  
Analytical Sensitivity ◽  
High Performing ◽  
Carbon Particles ◽  
Screen Printed Electrodes ◽  
Ink Formulation ◽  
Screen Printed

The properties of carbon nano-onions (CNOs) make them attractive electrode materials/additives for the development of low-cost, simple to use and highly sensitive Screen Printed Electrodes (SPEs). Here, we report the development of the first CNO-based ink for the fabrication of low-cost and disposable electrodes, leading to high-performance sensors. Achieving a true dispersion of CNOs is intrinsically challenging and a key aspect of the ink formulation. The screen-printing ink formulation is achieved by carefully selecting and optimising the conductive materials (graphite (GRT) and CNOs), the polymer binder, the organic solvent and the plasticiser. Our CNO/GRT-based screen-printed electrodes consist of an interconnected network of conducting carbon particles with a uniform distribution. Electrochemical studies show a heterogeneous electron transfer rate constant of 1.3 ± 0.7 × 10−3 cm·s−1 and a higher current density than the ferrocene/ferrocenium coupled to a commercial graphite SPEs. In addition, the CNO/GRT SPE can detect dopamine in the concentration range of 10.0–99.9 µM with a limit of detection of 0.92 µM (N = 3). They exhibit a higher analytical sensitivity than the commercial graphite-based SPE, with a 4-fold improvement observed. These results open up the possibility of using high-performing CNO-based SPEs for electrochemical applications including sensors, battery electrodes and electrocatalysis.

A simple and low-cost screen printed electrode for hepatocellular carcinoma methylation detection

The Analyst ◽  
2019 ◽  
Vol 144 (10) ◽  
pp. 3282-3288 ◽  
Author(s):  
Bobo Huang ◽  
Lin Ji ◽  
Bo Liang ◽  
Qingpeng Cao ◽  
Tingting Tu ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Dna Methylation ◽  
Low Cost ◽  
Screen Printed Electrode ◽  
Screen Printed Electrodes ◽  
Screen Printed

AuNPs decorated screen printed electrodes were used to detect DNA methylation.

scholarly journals Paper-Based Screen-Printed Electrodes: A New Generation of Low-Cost Electroanalytical Platforms

Biosensors ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 51 ◽  
Author(s):  
Estefanía Costa-Rama ◽  
María Teresa Fernández-Abedul
Keyword(s):  
Electrochemical Sensors ◽  
Low Cost ◽  
Comprehensive Overview ◽  
Screen Printed Electrodes ◽  
User Friendly ◽  
New Generation ◽  
Main Substrate ◽  
Screen Printed

Screen-printed technology has helped considerably to the development of portable electrochemical sensors since it provides miniaturized but robust and user-friendly electrodes. Moreover, this technology allows to obtain very versatile transducers, not only regarding their design, but also their ease of modification. Therefore, in the last decades, the use of screen-printed electrodes (SPEs) has exponentially increased, with ceramic as the main substrate. However, with the growing interest in the use of cheap and widely available materials as the basis of analytical devices, paper or other low-cost flat materials have become common substrates for SPEs. Thus, in this revision, a comprehensive overview on paper-based SPEs used for analytical proposes is provided. A great variety of designs is reported, together with several examples to illustrate the main applications.

scholarly journals Disposable and low-cost lab-made screen-printed electrodes for voltammetric determination of L-Dopa

2021 ◽  
pp. 100056
Author(s):  
Jefferson H.S. Carvalho ◽  
Jeferson L. Gogola ◽  
Márcio F. Bergamini ◽  
Luiz H. Marcolino-Junior ◽  
Bruno C. Janegit
Keyword(s):  
Low Cost ◽  
Voltammetric Determination ◽  
Screen Printed Electrodes ◽  
Screen Printed

scholarly journals Comparison of cyclic voltammetry measurements of paper-based screen printed electrodes via proprietary and open source potentiostat

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 3916-3933
Author(s):  
Igor Karlovits ◽  
Urška Kavčič ◽  
Špela Trafela ◽  
Kristina Žužek Rožman
Keyword(s):  
Cyclic Voltammetry ◽  
Open Source ◽  
Invasive Plant ◽  
Low Cost ◽  
Industrial Process ◽  
Polluted Water ◽  
Raspberry Pi ◽  
Mechanical Grinding ◽  
Screen Printed Electrodes ◽  
Screen Printed

The use of screen-printed electrodes in different monitoring applications, e.g., polluted water, biotechnology, agriculture, industrial process control, and other applications, are continuously being developed. New cheap and open-source potentiostats have been recently emerging, in addition to the commercial and proprietary solutions on the market. In this study, paper-based, screen-printed electrodes were utilised as an alternative solution for ceramic-based electrodes and were tested with two potentiostats (proprietary and low-cost open-source running on wireless 64 bit Linux system installed on Raspberry Pi 3+). Unique paper substrates made from invasive plant papers and one commercial product were used for screen electrode printing. Ink layer thicknesses variations and mechanical grinding were applied, and cyclic voltammetry measurements were conducted. The variation in cyclic voltammetry measurements could be attributed to two sources: the potentiostats showed differences in their sensibility and signal values, and paper surface and structure also contributed to differences. Simultaneously, the additional processing steps, e.g., mechanical grinding, introduced additional measurement variations and differences in the measurement process.

scholarly journals EGFET-based pH Sensor coupled with Low-cost Electrochemical Screen-printed Electrodes

2021 ◽  
Vol 1723 (1) ◽  
pp. 012024
Author(s):  
Bryan E Alvarez-Serna ◽  
Roberto G Ramírez-Chavarría
Keyword(s):  
Low Cost ◽  
Ph Sensor ◽  
Screen Printed Electrodes ◽  
Screen Printed

scholarly journals Recent Trends in the Improvement of the Electrochemical Response of Screen-Printed Electrodes by Their Modification with Shaped Metal Nanoparticles

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2596
Author(s):  
Karina Torres-Rivero ◽  
Antonio Florido ◽  
Julio Bastos-Arrieta
Keyword(s):  
Environmental Control ◽  
Wastewater Treatment Plants ◽  
Low Cost ◽  
Chemical Properties ◽  
Electrochemical Analysis ◽  
Electrochemical Response ◽  
Screen Printed Electrodes ◽  
Mass Transport Rate ◽  
Analytical Response ◽  
Screen Printed

Novel sensing technologies proposed must fulfill the demands of wastewater treatment plants, the food industry, and environmental control agencies: simple, fast, inexpensive, and reliable methodologies for onsite screening, monitoring, and analysis. These represent alternatives to conventional analytical methods (ICP-MS and LC-MS) that require expensive and non-portable instrumentation. This needs to be controlled by qualified technicians, resulting moreover in a long delay between sampling and high-cost analysis. Electrochemical analysis based on screen-printed electrodes (SPEs) represents an excellent miniaturized and portable alternative due to their disposable character, good reproducibility, and low-cost commercial availability. SPEs application is widely extended, which makes it important to design functionalization strategies to improve their analytical response. In this sense, different types of nanoparticles (NPs) have been used to enhance the electrochemical features of SPEs. NPs size (1–100 nm) provides them with unique optical, mechanical, electrical, and chemical properties that give the modified SPEs increased electrode surface area, increased mass-transport rate, and faster electron transfer. Recent progress in nanoscale material science has led to the creation of reproducible, customizable, and simple synthetic procedures to obtain a wide variety of shaped NPs. This mini-review attempts to present an overview of the enhancement of the electrochemical response of SPEs when NPs with different morphologies are used for their surface modification

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