Construction of Eu³⁺ Ion‐Selective Electrode Based on 1,2‐Diaminopropane‐N,N,N′,N′‐tetraacetic acid

Abstract

A new Eu 3+ PVC membrane electrode based on 1,2-diaminopropane-N, N,N',N'-tetraacetic acid (DAPTA) as a suitable ionophore has been prepared and studied. The electrode shows a good selectivity for Eu(III) ion with respect to most common cations including alkali, alkaline earth, transition and heavy metal ions. This electrode has a wide linear dynamic range from 1.0×10 -6 to 1.0×10 -2 M with a Nernstian slope of 19.7±0.5 mV per decade and a low detection limit of 7.2×10 -7 M in the pH range of 2.5-9.1, while the response time was rapid (<10 s). The practical utility of the electrodes has been demonstrated by their use as indicator electrodes in the potentiometric titration of Eu 3+ ions with EDTA and for the determination of Eu 3+ in some water sample solutions.

Development of polyvinyl chloride (PVC)-based highly efficient potentiometric sensors containing two benzene-centered tripodal diglycolamides as ionophores

“…In addition, the present membrane sensor also works in a dilute nitric acid solution which has relevance with the SNF acid composition whereas the other membrane sensors in Table 2 (S. No. 5 to 7) work at pH range [4,36,37]. Although, the TREN-DGA-based membrane (entry 3, Table 2) showed rather superior analytical performance at a lower concentration range than the present membranes which may be attributed to the higher flexibility of the ligand vis-à-vis that of L I and L II the present membrane sensor showed rather better selectivity with common interfering metal ions probably owing to the more preorganized structure of the benzene centered ligands (3 ).…”

Ion-Selective Electrodes in the Food Industry: Development Trends in the Potentiometric Determination of Ionic Pollutants

“…Potentiometry offers several advantages compared to other electrochemical techniques, including high lifetimes, low cost, short response time, and wide detection ranges [28]. This method also leads to low power consumption, since no current flows between electrodes, and no external voltage is applied [29,30]. Moreover, electrodes can be designed to have low detection limits, enabling the ultra-trace detection of pollutants [31].…”

Evaluation of a novel PVC-based efficient potentiometric sensor containing a tripodal diglycolamide (TREN-DGA) ionophore for europium(III) estimation

“…Therefore, the development of an efficient analytical method, which will be able to determine europium in trace level with a short analysis time and a minimum sample preparation step, is a challenging task for an analytical chemist. There are different methods to determine europium at low level, such as spectrophotometry [7], inductively couple plasma optical emission spectrometry (ICP-OES) [8], inductively couple plasma mass spectrometry (ICP-MS) [9,10], isotope dilution mass spectrometry (IDMS) [11], X-ray fluorescence spectrometry (XRF) [12], fast fourier transform continuous cyclic voltammetry (FFT-CCV) [13], potentiometric methods [14][15][16][17] etc. These methods generally involve expensive instruments, a complicated sample preparation step and are time consuming.…”

“…On the other hand, a potentiometric method is simple to operate, involves a low cost instrument, has a fast response, and offers the required reproducibility. There are numerous examples of potentiometric sensors based on neutral ionophores [3,[16][17][18][19]. Neutral ionophore-based membranes are generally composed of a polymer, plasticizer, and an ionic additive along with an ionophore [20,21].…”