Preparation of a new chromium(III) selective electrode based on 1-[(2-hydroxy ethyl) amino]-4-methyl-9H-thioxanthen-9-one as a neutral carrier

Fabrication A Composite Electrode Based on MWCNT/Zeolite for Potentiometric Determination of Chromium (III)

“…Electrode can used in the presence alkali, alkaline earth and transition metals without inconvenience. To compare this electrode with other chromium sensitive electrodes that reported in the literature [45][46][47][48][49][50][51][52][53][54] , linear range, detection limit, operating…”

Preparation and analytical application of new Cr3+-selective membrane electrodes based on acylhydrazone-containing benzimidazole derivatives

“…Working solutions were prepared by appropriate dilution of the stock solutions. Titration of the ligand solution (1.0 × 10 −5 M) was carried out by the addition of microliter amounts of a concentrated standard solution of Cr 3+ ion using a pre-calibrated microsyringe [29]. The absorbances were measured on a UV-vis spectrophotometer (Model TU-1900, Purkinje General).…”

“…and the list is continuously growing. Various types of electroactive materials have been used for the development of Cr 3+ selective sensors which include 4-dimethylaminoazobenzene [13], 1-(2-(1H-imidazole-1-yl)-1-(4-methoxyphenyl)ethylidene)-2-phenyl hydrazine [14], 1-[(2-hydroxyethyl)amino]-4-methyl-9H-thioxanthen-9-one [15], 4-amino-3-hydrazino-6-methyl-1,2,4triazin-5-one [16], methyl violet [17], N-(1-thien-2-ylethylidene)benzene-1,2-diamine [18], 5-amino-1-phenyl-1H-pyrazole-4-carboxamide [19], tributylphosphate [20], N-(acetoacetanilide)-1,2-diaminoethane and N,N′-bis(acetoacetanilide)-triethylenetetraammine, glyoxal bis(2-hydroxyanil) [21], glyoxal bis(2-hydroxyanil) [22], oxalic acid bis(cyclohexylidene hydrazide) [23], tri-o-thymotide [1] and Aurin TCA [3], p-(4-acetanilidazo)calix [4] arene [24], and triazole derivative [25]. Some of these sensors suffer with high detection limit, low working concentration, low pH range, and low selectivity.…”

Modified carbon paste electrodes for Cu(II) determination

“…The most selective interaction trend for the preparation of copper selective electrodes is based on the application of chemical recognition elements (organic or inorganic hydrophobic chelating agent) with selective tendency for binding of Cu 2+ ion [21][22][23][24][25][26][27][28][32][33][34][35]. Most of these previously reported electrodes have their own advantage and disadvantages.…”