A novel lariat crown compound as ionophore for construction of a mercury(II)-selective electrode

Mercury Ions Complexation with a Series of Heterocyclic Derivatives of 3-Hydroxychromone: Spectral Effects and Prospects for Ultrasensitive Hg2+Probing

“…Selective and sensitive detection of Hg 2+ is a question of primary importance, particularly for environmental monitoring. Therefore, numerous analytical strategies have been developed, including electrochemical methods, , optical techniques based on doped inorganic phosphors and their nanoparticles, and organic molecular probes, including those on the polymer support. − In the past few years, a new type of biosensor for in-flow mercury monitoring was developed based on luminescent bacteria and yeast cells as biomonitors …”

A ditopic calix[4]pyrrole amide derivative: highlighting the importance of fundamental studies and the use of NaPh4B as additive in the design and applications of mercury(ii) ion selective electrodes

“…A great deal of the published material involves the use of the NaPh 4 B (or related salts) as an additive, [20][21][22][23][24][25]28,29,31,[34][35][36][37][38][39]41,43,44,[46][47][48][49][50][51][52][66][67][68][69][70][71][72][73][74][75] which as shown in this paper interacts with Hg(II) and this has implications on the characteristics reported for these electrodes. In the absence of fundamental studies, the response of the electrode may result from the response of the additive rather than the ionophore (this may be occurring in the prior studies mentioned).…”

Solid-contact Hg(II)-selective electrode based on a carbon-epoxy composite containing a new dithiophosphate-based ionophore

“…The applicable pH interval, lower detection limit, and potentiometric selectivity coefficients of the sensor, strongly suggest that the sensor propounded is comparable with those of other methods used for the determination of this ion, giving additional advantages with respect to other sensors proposed in the literature [35,[37][38][39]. The sensor based on PenDTF exhibits different advantages like in the synthesis cost of the ionophore, in the design of the renewable inner solid contact that can be used for various experiments after light abrading and the elimination of the inner reference solution that turns the sensor maintenance-free, thus favoring safe storage.…”

“…Other comparative advantage of this electrode as referred to those based on polymeric membranes, is that if the latter were to suffer some damage or were contaminated, they would not be regenerated easily, whereas that reported here enables proper regeneration of the sensor's active sites on the surface, that may have gotten inactive or blocked, merely by lightly grinding away the surface in order to obtain a new set of fully available active sites. The ionophore used in this work is approximately 60 times less expensive to that of obtained as compared to the polymeric membranes of some of the sensors referred here [36,[38][39][40], which have the added disadvantage of not showing better analytic parameters.…”