Selenite-Selective Membrane Electrodes Based on Ion Exchangers and Application to Anodic Slime

New selenite ion-selective electrodes based on 5,10,15,20-tetrakis-(4-methoxyphenyl)-21H,23H-porphyrin-Co(II)

“…Table 8 compares the slope, response time, detection limit, and major interfering ions of the proposed selenite electrodes with those of selenite-selective electrodes reported in the literature. We can observe that, our electrodes showed larger slope, faster response time than those reported in the literature [8,10,11], while it has narrower linear range.…”

“…Piaselenol (PIS) was used in the form of 1,2-phenylenediamine selen complex as the active material for ion-selective electrode membrane sensitive to selenite ion [10]. Silicon rubber [11] was used as the active membrane matrix for selenite-selective electrode consisted of 4% dialkyldimethylammonium chloride, and QAD 86 PI. A self-made ion-selective electrode was made using Ag 2 Se as electroactive material [12], and used for the determination of selenium in biological materials.…”

Development of a Novel Automatic Potentiometric System for Determination of Selenium and Its Application in Pharmaceutical Formulations and Anodic Slime

“…Anodic slime contains 8 -20% of selenium, next to 20 -40% of copper. There are also Ag, Pb and Te in much smaller quantities, 0.3 -3% [23]. The newly-developed membrane sensor is applied to some samples prepared from anodic slime which are digested with acid.…”

“…The use of PVC matrix membrane sensors for SeO 3 2À determination including many sensing agents; dialkyldimethylammonium chloride [23], 1,2-phenylenediamine selen complex PIS (piaselenol) [24], and 4,6-dibromopiaselenole [25] has been received much attention. Advantages and limitations of these sensors are presented in Table 1.…”

A solid-state hydroxide ion selective electrode for the measurement of high pH values

“…The liquid membrane electrodes show long response times and low selectivity. More recently solid membrane electrodes have been prepared using various polymer matrix materials [8]. Some hydrogen ion selective membrane electrodes based on PVC-SR [9] and on a tribenzylamine neutral carrier in a PVC [10] showed pH dependence between 2.5 and 11.…”