Preparation and Study of a 1-Furoyl-3,3-Diethylthiourea Electrode

Abstract

Cadmium (II) electrode based on plasticized PVC membranes with 1-furoyl-3,3-diethyl thiourea as ionophore and tributylphosphate as plasticizer has been developed. The membrane was applied on a support of conducting epoxy resin. Some parameters of evaluation of the electrode are presented in this work. The constructed electrode showed linear response in the concentration range of 10-6-10-3 mol/dm 3 , had a slope of 28.5 mV/decade, a detection limit (DL) of 2.10-6 mol/dm 3 and a lower limit of lineal range (LLLR) of 4.2.10-6 mol/dm 3. The static response time obtained was less than 20 seconds. The Cd/S relationship in the membrane was 1:1, as was determined by chemical microanalysis of energy dispersive X-ray spectroscopy (EDS). The constructed electrodes had a lifetime of 5 days.

The Matrix Product Ansatz for integrable U(1)N models in Lunin-Maldacena backgrounds

“…This MPA is constructed by making a one-to-one correspondence between configurations of spins (or scalar fields in the SYM) and products of abstract matrices. Although in Lunin-Maldacena backgrounds all eigenstates have zero momentum, we can generalise the MPA including all momentum states [27]. We analyses the YangBaxter equation in the N = 3 sector and the consistence of the algebraic relations among the matrices defining the MPA and find a new class of exactly integrable model unknown up to now (model B.2).…”

“…Our solution generalises the previous results obtained in (14) through the coordinate Bethe ansatz for U(1) N quantum spin chains. The analyses of the model for the full sector with U(1) N symmetry will be presented elsewhere [27]. [35].…”

Polymeric membranes conditioning for sensors applications: mechanism and influence on analytes detection

“…Moreover, there is a bigger frequency decrease by raising the concentration of lead solutions, thus, indicating that the more concentrated they are, the higher the adsorption. This is the basis of the working mechanism of the sensor's membrane whose electrochemical response is selective towards the amount of analyte to detect [32,33]. Furthermore, the same structural considerations made for B1 can be done.…”

Behavior of a Polymeric Liquid Membrane Ion- Selective Electrode for Chloride Ion

“…The number of investigations concerning ion selective electrodes, by using various ionophores [1][2][3][4] for determination of different ions has been increasing [4][5][6][7][8]. These membrane electrodes are sensitive to a large number of ions.…”