Potentiometric Sensing

Zdrachek, Elena; Bakker, Eric

doi:10.1021/acs.analchem.8b04681

Cited by 254 publications

(160 citation statements)

References 189 publications

(435 reference statements)

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“…A general treatment on electrochemical biosensors is beyond the scope of this paper as excellent dedicated reviews can be found in the recent literature. 22,[32][33][34] Here, only the most salient details that are relevant to the discussion of the amplification factors in electronic biosensors, will be highlighted. In particular, all the discussion of the biocatalytic reactions in enzyme based amperometric biosensors 35 will be omitted as we will focus only on a generic faradaic current generated by a redox active couple such as ferrocyanide.…”

Section: Materials Horizons Reviewmentioning

confidence: 99%

“…However, just as an example, potentiometric sensors based on Molecularly Imprinted Polymer membranes have been successfully developed to sense organic compounds in their ionic and neutral forms. 33,38 Indeed, these membranes, have gained wide acceptance as new artificial recognition elements exhibiting affinity and selectivity comparable to those of natural recognition elements such as antibodies and enzymes. [39][40][41] These evidences show that a membrane of a potentiometric sensor can be designed to selectively detect not only an ionic species but also analytes such as antigens or DNA strands, that can or cannot bear a net charge.…”

Section: The Electrochemical Potentiometric Sensorsmentioning

confidence: 99%

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About the amplification factors in organic bioelectronic sensors

et al. 2020

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Section: Materials Horizons Reviewmentioning

confidence: 99%

Section: The Electrochemical Potentiometric Sensorsmentioning

confidence: 99%

About the amplification factors in organic bioelectronic sensors

et al. 2020

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“…One of the important factors that should be also taken under consideration by researchers while making this choice is the final application. In particular, we recently found that the new approximation proposed here to describe the mixed ion potentiometric response made it possible to analyze the time-dependent behavior of selectivity coefficients [13], which was not possible on the basis of other models previously described in the literature.…”

Section: Discussionmentioning

confidence: 96%

Describing Ion Exchange at Membrane Electrodes for Ions of Different Charge

Zdrachek

Bakker

2017

Electroanalysis

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It is well‐documented in the literature that the Nikolsky‐Eisenman equation cannot accurately describe the equilibrium of ion exchange at membrane electrodes for ions of different charge. Despite this, unfortunately, it is still widely used owing to the complexity of the more rigorous formalism developed by Bakker et al. in 1994. Here, different available approaches are presented in a unified manner and compared. This includes two different approximations that are equally appropriate for cases of low level of interference where the extent of ion‐exchange is comparatively small, one of which is introduced here for the first time. The comparison also considers the permutated form of the Nikolsky‐Eisenman equation, where the primary ion is treated as the interfering ion and vice versa. As the permutated form gives a deviation from the thermodynamic model that is opposite that of the regular Nikolsky‐Eisenman equation, the two can be combined to give a semi‐empirical equation that is surprisingly close to the thermodynamic model and that comprises a single equation for any charge combination. The different choices presented here may be helpful to solve more complex theoretical problems, as for example in the modeling of the time dependence of the electrode response by numerical simulation where the interfacial step condition is a unique and difficult feature of the calculation.

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“…Various environment and health monitoring agencies have set the values for daily intake of nitrites by human in portable drinking water as 3 mg/L. Hence it is essential to monitor and check nitrite at trace levels from the environmental samples using ion selective electrodes [36, 37]. These ion selective electrodes can compete with the existing methods of trace analysis.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Zr‐Amino Terephthalate and its Composite with MWCNTs as a Novel Electrode Material in Nitrite Quantification

Suma

Malingappa

2020

Electroanalysis

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A simple and greener electrochemical sensing platform towards nitrite measurement using amine modified Zr‐terephthalate and MWCNTs has been demonstrated. The characterization of the composite material has been carried out using spectroscopic and voltammetric techniques. The composite material overcomes the inherent drawbacks of MOFs like lower conductivity and stability in aqueous medium. The MWCNTs/Zr−ATA composite modified electrode showed better electrocatalytic activity in nitrite quantification with good linearity in the concentration range 2–440 μM with detection limit 0.22 μM and sensitivity of 0.657 μA μM−1 cm−2. The fabricated electrode has been applied to quantify nitrite from root nodule samples.

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Potentiometric Sensing

Cited by 254 publications

References 189 publications

About the amplification factors in organic bioelectronic sensors

About the amplification factors in organic bioelectronic sensors

Describing Ion Exchange at Membrane Electrodes for Ions of Different Charge

Hydrothermal Synthesis of Zr‐Amino Terephthalate and its Composite with MWCNTs as a Novel Electrode Material in Nitrite Quantification

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