A Solid-Contact Ion Selective Electrode for Copper(II) Using a Succinimide Derivative as Ionophore

Abstract

All-solid-state sensors with polyvinyl chloride (PVC)-based membranes using off-the-shelf N-hydroxysuccinimide (NHS) and succinimide (Succ) ionophores were prepared using DOP (dioctyl phthalate) and NPOE (ortho-nitrophenyloctyl ether) as plasticizers. Good responses were obtained when NHS was used. The potentiometric response of the proposed electrode is independent of pH over the range 2–6. The electrode shows a fast response time of 0.25 s. The electrode exhibits a Super-Nernstian response, with 37.5 mV/decade, with a potentiometric detection limit of 4.4 μM. The proposed sensor revealed good selectivity towards a group of transition metal ions.

Ion-Selective Electrodes for Detection of Lead (II) in Drinking Water: A Mini-Review

“…As one type of potentiometric sensing, ISE typically requires the use of a reference electrode to electrochemically determine the concentration of target ions in a variety of chemical environments. ISEs have been attractive for detecting heavy metal traces because of their very low detection limits, good selectivity, wide dynamic range, low cost, and portability for in-situ measurements [28][29][30]. Many organic, inorganic, chelating, intercalating, and composite materials were studied as electroactive materials for the preparation of ion-selective membrane electrodes.…”

Potentiometric detection and removal of copper using porphyrins

“…The selection of the best plasticizer can improve the sensor potentiometric answer in terms of sensitivity and sometimes also of selectivity. There are some reports which recommend lower dielectric constant plasticizers for some divalent metal selective sensors [14] and others in which the best results were obtained by using plasticizers characterized by big dielectric constants [18]. In this respect, this work was focused on obtaining and comparatively presentation of three sensors having the same weight percentage composition of the membrane, but using three different plasticizers: sensor A – plasticized with o -nitrophenyloctylether ( o -NPOE, Ɛ = 24), sensor B – plasticized with dioctyl phtalate (DOP, Ɛ = 7) and sensor C – plasticized with dioctyl sebacate (DOS, Ɛ = 4).…”

“…This is the reason why a lot of copper-selective sensors based on different ionophores were reported. Several organic compounds, such as: 1-(2-hydroxybenzylidene) thiosemicarbazide [7], Schiff bases [8,9], 2-mercaptobenzoxazole [10], bezo-substituted macrocyclic diamide [11], 6-methyl-4-(1-phenylmethylidene)amino-3-thioxo-1,2,4-triazin-5-one [12], porphyrin derivatives [13], cyclic tetrapeptide derivatives [14], 7-hydroxy-3-(2-methyl-2,3-dihydrobenzo[d]thiazol-2-yl)-2H-chromen-2-one [15], tetraazacyclotetradecane derivative [16], dimethyl 4,4’-( o -phenylene)bis(3-thioallophanate) [17], succinimide derivative [18], polyindole [19] were tested as ionophores.…”

A colorimetric and fluorescent chemosensor for selective detection of Cu2+ based on a new diarylethene with a benzophenone hydrazone unit

“…Furthermore, copper participates in the metabolism of iron and in the formation of red blood cells to maintain normal hematopoietic function . High or low levels of Cu 2+ will also effect immune function and hormone secretion, resulting in organ damage . Due to its important role in various biological systems, the search for a chemosensor of Cu 2+ has become a hot topic in research areas …”