Mercury(ii) ion-selective electrode. Study of 1,3-diphenylthiourea as ionophore

An ion selective electrode for mercury(II) based on mercury(II) complex of poly(4-vinyl pyridine)

“…Recent reports [5][6][7][8][9][10][11][12][13][14][15][16][17] on the fabrication of Hg-ISE indicate that they are mainly developed as heterogeneous solid membrane type [5,[7][8][9]12,14,15] using poly vinyl chloride as binder with diverse donor ligands as active materials. Other types of ISE such as heterogeneous liquid membrane type [17], coated wire electrode (CWE) [6,13] and ion selective field effect transistor (ISFET) [10,11] have also been developed. The majority of the ligands (ionophores) used are those with sulphur in their functional groups [9,10,13,17].…”

A Rhodamine-based Dual Chemosensor for the Simultaneous Detection of Fe3+ and Cu2+

“…11 Despite the high sensitivity and low detection limits, these methods require expensive equipment and complicated sample pretreatment procedures, which cannot be realized for outdoor detection. 12 Furthermore, most of these methods can only detect the total Fe, but cannot give the Fe 3+ concentration directly.…”

Potentiometric Determination of Trace Amounts of Mercury (II) in Water Sample Using a New Modified Palm Shell Activated Carbon Paste Electrode Based on Kryptofix 5

“…A number of methods, such as atomic absorption spectrometry (AAS) [2,3], inductively coupled plasma [4], X-ray fluorescence spectrometry [5], anodic stripping voltammetry [6,7] and potentiometry [8,9] have been used for determination of mercury in the analytical samples. Many sensors for potentiometric determination of mercury(II) based on carbon paste CPE [10][11][12][13][14][15][16], polymeric membranes PVC [17][18][19][20][21][22][23][24][25] and coated wire electrodes [26][27][28][29][30] have been reported. However, these electrodes are not very fruitful as they have either one, two, or in some cases, all the following problems: 1) a high detection limit; 2) a narrow working concentration rang; 3) a long response time; 4) serious interferences from various cations.…”