Resolution increase of ion-selective electrodes response by using a reversed amperometric setup

Kalisz, Justyna; Węgrzyn, Katarzyna; Michalska, Agata; Maksymiuk, Krzysztof

doi:10.1016/j.electacta.2022.140886

Cited by 7 publications

(5 citation statements)

References 32 publications

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“…The application of ion-selective electrode in chemical analysis and detection by Wang Yalin et al has also shown high applicability, gradually becoming a mainstream analysis technology in the field of chemical analysis [10].Based on the discovery of several new mechanisms in ionic interface reactions, Li Hang et al established an ion-selective electrode method based on the multi-parameter joint analysis principle of soil particle surface properties, realizing the joint determination of soil surface property parameters [11].KaliszJustyna used AgCl electrode as working electrode, ion-selective electrode as reference electrode, and "reverse" amperage setting to significantly amplify the potential response of ISE [12].Using this method, the linear dependence of the current on the concentration of the model analyte (potassium and calcium ions) can be recorded even in a narrow concentration range (e.g., 1.34 to 1.10mA for calcium ions), and the change in the open-circuit potential recorded there is negligible. KhoshnoodRaziehSanavi prepared an aluminum ion selective electrode, which is used for quantitative analysis of aluminum ions in the presence of various cations such as alkaline ions, neutral ions and heavy metal ions [13].According to the results, the aluminum ion nanocomposite carbon slurry sensor shows good selectivity in the presence of a few metal ions, and the response of the sensor is independent of pH value, the range is 24, and the response time is less than 5s.…”

Section: Quotementioning

confidence: 99%

Study on Calibration Method for Ion Concentration Measurement Parameters of Ion Selective Electrode Based on Multiple Linear Regression

Li¹,

Zhang²

2023

AJST

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In the drilling industry, the change of ion concentration of drilling fluid can provide a basis for judging whether it enters the target layer and whether there is a layer penetration phenomenon during the drilling process. Traditional ion concentration determination methods require manual operation, time-consuming and labor-intensive, and most of them have problems such as large measurement errors, measurement cycles and in-line measurements, so for these problems, there is an urgent need for a fast and real-time measurement measurement method. The ion-selective electrode method allows accurate and real-time measurement of chloride, sulfur and potassium ions, but due to the mechanism of the ion selective electrode method, mutual interference occurs when multiple ions coexist. Aiming at the problem of low efficiency of traditional measurement methods and multi-ion interference with each other in ion-selective electrode method. In this paper, an ion concentration calibration method based on multiple linear regression is proposed, and the error cause of the ion selective electrode method is analyzed first, and the measurement value is calibrated in combination with the multiple linear regression model, and finally the ion concentration experimental platform is established, and the results of the measurement accuracy of chlorine, sulfur and potassium ions are improved by more than 90%, which proves the effectiveness of the proposed method.

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Section: Quotementioning

confidence: 99%

Study on Calibration Method for Ion Concentration Measurement Parameters of Ion Selective Electrode Based on Multiple Linear Regression

Li¹,

Zhang²

2023

AJST

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“…Practical applications of ion-selective electrodes (ISEs) with membranes containing ionophores usually involve recordings of the EMF: a zero-current potentiometric signal (ISE potential) measured against a suitable reference electrode (RE). However, in recent years, ISEs have been increasingly used in non-zero-current modes: voltammetry [1][2][3][4][5][6][7] and chronoamperometry/coulometry [8][9][10][11][12][13][14][15][16][17][18]. A voltammetric analysis with ISEs allows for simultaneous measurements of the concentrations (rigorous activities) of several ions in a sample, using only one electrode [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…In chronoamperometric measurements, the currents flowing through membranes (and therefore across membrane/solution interfaces) are typically low: 10 −9 -10 −7 A. However, sometimes they may achieve 10 −4 A, especially in the reversed amperometric setup [18]. Thus, ISEs may be polarized during measurements whereas the interpretation of the results assumes their Nernstian response to activities of ions in solutions.…”

Section: Introductionmentioning

confidence: 99%

Transfer of Sodium Ion across Interface between Na+-Selective Electrode Membrane and Aqueous Electrolyte Solution: Can We Use Nernst Equation If Current Flows through Electrode?

Keresten,

Lazarev,

Mikhelson

2024

Membranes

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Electrochemical impedance and chronopotentiometric measurements with Na+-selective solvent polymeric (PVC) membranes containing a neutral ionophore and a cation exchanger revealed low-frequency resistance, which is ascribed to Na+ ion transfer across the interface between the membrane and aqueous solution. The attribution is based on the observed regular dependence of this resistance on the concentration of Na+ in solutions. The respective values of the exchange current densities were found to be significantly larger than the currents flowing through ion-selective electrodes (ISEs) during an analysis in non-zero-current mode. This fact suggests that the interfacial electrochemical equilibrium is not violated by the current flow and implies that the Nernst equation can be applied to interpret the data obtained in non-zero-current mode, e.g., constant potential coulometry.

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“…However, this improvement required multiple ISEs (30 for chloride and 10 for both other ions) to be connected. More recently, amperometry with an inverted electrode configuration was successfully applied to increase the sensitivity of ISEs . The ISE was used as a reference electrode (RE), while an Ag/AgCl element was treated as a nonpolarizable working electrode (WE).…”

mentioning

confidence: 99%

“…More recently, amperometry with an inverted electrode configuration was successfully applied to increase the sensitivity of ISEs. 13 The ISE was used as a reference electrode (RE), while an Ag/AgCl element was treated as a nonpolarizable working electrode (WE). This method gave a linear dependence on concentration within a limited concentration range and high-resolution pH sensing was also achieved.…”

mentioning

confidence: 99%

Increasing the Sensitivity of pH Glass Electrodes with Constant Potential Coulometry at Zero Current

Nussbaum,

Jeanneret,

Bakker

2024

Anal. Chem.

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It has recently become possible to increase the sensitivity of ion-selective electrodes (ISEs) by imposing a constant cell potential, allowing one to record current spikes with a capacitor placed in series in the circuit. The approach requires a transient current to pass through the measurement cell, which unfortunately may introduce measurement errors and additionally excludes the use of high-impedance indicator electrodes, such as pH glass electrodes. We present here an electronic circuit that overcomes these limitations, where the cell is measured at zero current in combination with a voltage follower, and the current spike and capacitor charging occur entirely within the instrument. The approach avoids the need for a counter electrode, and one may use any electrode useful in potentiometry regardless of its impedance. The characteristics of the circuit were found to approach ideality when evaluated with either an external potential source or an Ag/ AgCl electrode. The current may be linearized and extrapolated to further reduce the measurement time. The circuit is further tested with the most common yet very challenging electrode, the pH glass electrode. A precision of 64 μpH was obtained for 0.01 pH change up to 0.05 from a reference solution. Similar pH changes were also measured reliably further away from the reference solution (0.5−0.55) and resulted in a precision of 377 μpH. The limitations of this experimental setup were explored by performing pH calibrations within the measuring range of the probe.

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Resolution increase of ion-selective electrodes response by using a reversed amperometric setup

Cited by 7 publications

References 32 publications

Study on Calibration Method for Ion Concentration Measurement Parameters of Ion Selective Electrode Based on Multiple Linear Regression

Study on Calibration Method for Ion Concentration Measurement Parameters of Ion Selective Electrode Based on Multiple Linear Regression

Transfer of Sodium Ion across Interface between Na+-Selective Electrode Membrane and Aqueous Electrolyte Solution: Can We Use Nernst Equation If Current Flows through Electrode?

Increasing the Sensitivity of pH Glass Electrodes with Constant Potential Coulometry at Zero Current

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