A Wireless Multi-Sensor Dielectric Impedance  Spectroscopy Platform

Ghaffari, Seyed Alireza; Caron, William-Olivier; Loubier, Mathilde; Rioux, Maxime; Viens, Jeff; Gosselin, Benoît; Messaddeq, Younès

doi:10.3390/s150923572

Cited by 13 publications

(11 citation statements)

References 18 publications

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“…As described in our recent studies [ 23 , 24 ], the electrochemical nitrate sensor comprises a set of electrode wires surrounded by an ion selective polymer membrane, as shown in Figure 1 a. The polymer membrane is inserted in the growing medium (preferably wet) and interacts locally with the medium under test.…”

Section: Methodsmentioning

confidence: 99%

Practical Application of Electrochemical Nitrate Sensor under Laboratory and Forest Nursery Conditions

Caron

Lamhamedi

Viens

et al. 2016

Sensors

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The reduction of nitrate leaching to ensure greater protection of groundwater quality has become a global issue. The development of new technologies for more accurate dosing of nitrates helps optimize fertilization programs. This paper presents the practical application of a newly developed electrochemical sensor designed for in situ quantification of nitrate. To our knowledge, this paper is the first to report the use of electrochemical impedance to determine nitrate concentrations in growing media under forest nursery conditions. Using impedance measurements, the sensor has been tested in laboratory and compared to colorimetric measurements of the nitrate. The developed sensor has been used in water-saturated growing medium and showed good correlation to certified methods, even in samples obtained over a multi-ion fertilisation season. A linear and significant relationship was observed between the resistance and the concentration of nitrates (R2 = 0.972), for a range of concentrations of nitrates. We also observed stability of the sensor after exposure of one month to the real environmental conditions of the forest nursery.

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Section: Methodsmentioning

confidence: 99%

Practical Application of Electrochemical Nitrate Sensor under Laboratory and Forest Nursery Conditions

Caron

Lamhamedi

Viens

et al. 2016

Sensors

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“…Nitrate concentration in water samples was also identified using a similar approach based on a dielectric impedance sensor (DIS) node on ZigBee mesh communication [309]. The system was constructed to perform a continuous detection within a frequency between 5 and 100 kHz under 250 mW.…”

Section: Wireless Sensor Network and Remote Sensing Applicationsmentioning

confidence: 99%

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

Zulkifli

Rahim

Lau

2018

Sensors and Actuators B: Chemical

214

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a b s t r a c tWater monitoring technologies are widely used for contaminants detection in wide variety of water ecology applications such as water treatment plant and water distribution system. A tremendous amount of research has been conducted over the past decades to develop robust and efficient techniques of contaminants detection with minimum operating cost and energy. Recent developments in spectroscopic techniques and biosensor approach have improved the detection sensitivities, quantitatively and qualitatively. The availability of in-situ measurements and multiple detection analyses has expanded the water monitoring applications in various advanced techniques including successful establishment in hand-held sensing devices which improves portability in real-time basis for the detection of contaminant, such as microorganisms, pesticides, heavy metal ions, inorganic and organic components. This paper intends to review the developments in water quality monitoring technologies for the detection of biological and chemical contaminants in accordance with instrumental limitations. Particularly, this review focuses on the most recently developed techniques for water contaminant detection applications. Several recommendations and prospective views on the developments in water quality assessments will also be included.

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“…IOT permits physical entity to be detected and managed remotely via a network infrastructure such as embedded computing system. The advent technologies allow to exchange data without human interaction and at low cost wirelessly [40].…”

Section: Recent Development In Eis: Ad5933 Impedance Analyzermentioning

confidence: 99%

Impedimetric Sensors: Principles, Applications and Recent Trends

Sharma¹,

Singh²,

Nain³

et al. 2019

IJITEE

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This work figures the conceptual background of impedimetric measurements. Impedance measurement is a convenient approach for exploring the change in electrical behavior of diverse materials. An overview of in practice impedance analysis on CHI660D electrochemical work station is presented. Detection of microorganism causing foodborne diseases using IDE and other methods, toxic metal ion quantification, environment pollutant monitoring are described applications in this work. This work also reviewed the noticeable development in impedance measurement devices based on AD5933 such as bio-impedance measurement and explosive material detection. Biological signals are detected by transducing them into electrical analogy, detection of which is not a big issue. The main challenges are to convert biological signal into electrical information. Electrochemical sensors present captivating techniques to determine the content of sample under test. Electrochemical sensing platforms come up with an appealing methodology to interpret the concentration of biological sample as these sensors directly translate biological information to an electronic one. Huge amount of sensing platforms and corresponding devices has been developed. EIS is a rapid and easily computerized technique used to characterize biomolecules, inorganic materials, having a wide range of applications. The measured impedance spectra are generally fitted to an analogous electrical circuit model which constitutes an electrical documentation of the SUT by disclosing its behavior and properties. Quick, highly selective/specific and sensitive techniques to quantify biological and biochemical molecules and other target species are of great importance in biomedical and biotechnological application. Recent developments trends for handy, portable, fast and precise impedance analyzer is discussed. AD5933 evolution kit is reviewed.

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A Wireless Multi-Sensor Dielectric Impedance Spectroscopy Platform

Cited by 13 publications

References 18 publications

Practical Application of Electrochemical Nitrate Sensor under Laboratory and Forest Nursery Conditions

Practical Application of Electrochemical Nitrate Sensor under Laboratory and Forest Nursery Conditions

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

Impedimetric Sensors: Principles, Applications and Recent Trends

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