scholarly journals An All-Solid-State Ammonium Ion-Selective Electrode Based on Polyaniline as Transducer and Poly (o-phenylenediamine) as Sensitive Membrane

2016 ◽  
pp. 9928-9940 ◽  
Author(s):  
Yating Kan ◽  
Keyword(s):  
Solid State ◽  
Ion Selective Electrode ◽  
Ammonium Ion ◽  
Selective Electrode ◽  
Sensitive Membrane

scholarly journals Fabrication of an All-Solid-State Ammonium Ion–Selective Electrode by a Two-Step Process Using Cyclic Voltammetry

Proceedings ◽  
2020 ◽  
Vol 60 (1) ◽  
pp. 12
Author(s):  
Abdelmohsen Benoudjit ◽  
Mohd. Firdaus Abd-Wahab ◽  
Wan Wardatul Amani Wan Salim
Keyword(s):  
Water Quality ◽  
Cyclic Voltammetry ◽  
Solid State ◽  
Ion Selective Electrode ◽  
Ammonium Ion ◽  
Ammonium Concentration ◽  
Sodium Polystyrene Sulfonate ◽  
Mobile Sensor ◽  
Selective Electrode ◽  
Step Process

Ammonium ion (NH4+) is one of the indicators of water quality. High ammonium concentration [NH4+] in water can cause eutrophication, affect aquatic biota, and cause cell death in the central nervous system of human beings. However, current ion-selective electrodes used for water-quality monitoring are bulky, require frequent calibration owing to membrane fouling, and cannot be integrated into mobile sensor platforms. We fabricated an all-solid-state ion-selective electrode (AS-NISE) for ammonium ion using a two-step process. The first step is electropolymerization deposition on the electrode using a solution of 3,4-ethylenedioxythiophene (EDOT), sodium polystyrene sulfonate (NaPSS), and lithium perchlorate (LiCLO4), resulting in a solid-state transducer on screen-printed carbon electrodes (SPCEs), and the second is electropolymerization deposition of EDOT, NaPSS, and o-phenylenediamine (o-PD) as an ammonium ion–selective membrane (NISM) on top of the transducer. The electropolymerization deposition of the transducer and the NISM were simply achieved by cyclic voltammetry (CV) with potential from 0.0 V to 0.8 V and 50 mVs-1 scan rates. The fabricated AS-NISEcan detect [NH4+] as low as 5.7×10-5 M with a slope of 61.9 mV/decade (R2>0.99) and a linear range from 10-3 M to 1 M. These preliminary results provide an initial insight into the applicability of the simple two-steps fabrication process of NH4+ ISEs for scaling-up purposes with the ability for miniaturization and integration into a mobile sensor platform.

A Solid Ammonium Ion Selective Electrode

1970 ◽  
Vol 3 (9) ◽  
pp. 457-464 ◽  
Author(s):  
R. E. Cosgrove ◽  
C. A. Mask ◽  
I. H. Krull
Keyword(s):  
Ion Selective Electrode ◽  
Ammonium Ion ◽  
Selective Electrode

scholarly journals Ionic Liquid-Multiwalled Carbon Nanotubes Nanocomposite Based All Solid State Ion-Selective Electrode for the Determination of Copper in Water Samples

Water ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 2869
Author(s):  
Cecylia Wardak ◽  
Karolina Pietrzak ◽  
Małgorzata Grabarczyk
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Solid State ◽  
Multiwalled Carbon Nanotubes ◽  
Water Samples ◽  
Limit Of Detection ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Multiwalled Carbon ◽  
Copper Determination

A new copper sensitive all solid-state ion-selective electrode was prepared using multiwalled carbon nanotubes-ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) nanocomposite as an additional membrane component. The effect of nanocomposite content in the membrane on the electrode parameters was investigated. The study compares, among others, detection limits, sensitivity, and the linearity ranges of calibration curves. Content 6 wt.% was considered optimal for obtaining an electrode with a Nernstian response of 29.8 mV/decade. An electrode with an optimal nanocomposite content in the membrane showed a lower limit of detection, a wider linear range and pH range, as well as better selectivity and potential stability compared to the unmodified electrode. It was successfully applied for copper determination in real water samples.

Determination of Iodide in Feeds and Plants by Ion-Selective Electrode Analysis

1971 ◽  
Vol 54 (4) ◽  
pp. 760-763
Author(s):  
William L Hoover ◽  
James R Melton ◽  
Peggy A Howard
Keyword(s):  
Ionic Strength ◽  
Solid State ◽  
Necessary Conditions ◽  
Ion Selective Electrode ◽  
Phosphate Solution ◽  
Selective Electrode ◽  
Aoac Method ◽  
Low Levels ◽  
High Concentrations

Abstract A method for determining low levels of iodide in feeds and plants is proposed. The samples are mixed with a 10% phosphate solution to maintain relatively constant ionic strength and pH and analyzed with a solid-state iodide electrode. Ashing is not required and there are no significant interferences by ions commonly found in feeds. The method is accurate in determining iodide content ranging from 10.0 ppm to high concentrations. Necessary conditions for storing and cleaning the electrodes are described. The proposed method is rapid and results compare favorably with AOAC method 7.091.

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