Recent Advances in Ion-selective membrane electrodes for in situ environmental water analysis

Why ammonium detection is particularly challenging but insightful with ionophore-based potentiometric sensors – an overview of the progress in the last 20 years

“…76 After inspecting all these papers, it seems clear that the main field of application of nonactin-based ISEs is the detection of NH 4 + in water. Indeed, this fact has been extensively reviewed over the years, e.g., de Marco, 7 Winkler, 77 Crespo, 3 and Cuartero. 1,6 In this context, it is noteworthy to mention the work by de Beer and co-workers that included measuring NH 4 + profiles in freshwater sediments, 78,79 even if those papers were published prior to the established screening time in the present review.…”

“…Moreover, ISEs are some of the few analytical techniques that provide in situ realtime measurements of the target concentration with total reliability. [1][2][3][4][5] Major examples that evidence the success of ISEs are the membrane-based design of a sensor and have been applied for ion determination mainly in water quality assessment, 1,6,7 clinical analyses, [8][9][10][11] and monitoring of sport practices. 2,[12][13][14] Looking back at the development history of ISEs, the integration of ion-selective membranes (ISMs) as the sensing element has undoubtedly been a disruptive event in this field.…”

Comparison of Different Commercial Conducting Materials as Ion-to-Electron Transducer Layers in Low-Cost Selective Solid-Contact Electrodes

“…Specifically, nearly 200 papers have been published during the last five years [1]. The advantages of SCISEs over the conventional ion-selective electrodes (ISEs) have been demonstrated in a variety of applications, including medical analysis [2][3][4][5][6], agriculture [7,8], environmental [9][10][11] and water quality monitoring [12][13][14] and process control [15]. Improvements in signal stability, detection limits, reduction of water accumulation at the SC-membrane interphase, transmembrane ion fluxes, reproducibility, and research efforts in the development of new SC materials have been reported [14,[16][17][18][19][20].…”

Determination of Atomoxetine Hydrochloride in Biological Fluids Using Potentiometric Carbon Paste Electrode Modified by TiO2 Nanoparticles

“…Considering these merits, ISEs are getting more attention as routine tools of chemical analysis in industry, clinical and environmental analyses. [22][23][24][25][26] Coated-wire ion-selective electrodes that were employed to overcome the problems associated with conventional ISE's 27,28 still suffer some shortcomings such as giving unreliable measurements due to the fluctuation of the electric potential. 29 New measures must be introduced to the working electrodes to alleviate or eliminate these effects and carbon-paste electrodes (CPE's) 30 appear to be suitable alternatives.…”