Silver ion-selective electrodes based on bis(dialkyldithiocarbamates) as neutral ionophores

Synthesis and characterization of monoazathiacrown ethers as ionophores for polymeric membrane silver-selective electrodes

“…It can be seen in Table 3 that electrodes using o-NPOE as plasticizer show the best response. Furthermore, many studies have indicated that the ionic additives can improve the electrode response and for monovalent cations the optimal number of anionic sites is usually 50 mol% relative to the ionophore [25]. The results in Table 4 show that the amounts of the ionophore and NaTFPB in a molar ratio of 4:1 present the best results, which is consistent with the fact that compound 16 forms a sandwich complex with silver ion [18].…”

A New Calcium Electrode Based on the Composite Thioacetamide/attapulgite as Ionophore

“…从图 3 中可看出, 以 DBP 为增塑剂的三只 电极响应能力基本相似, 这表明当选取 DBP 为增塑剂 时, 增加增塑剂的量不能明显增加电极的响应性能, 所 以为了节省 DBP 试剂的用量, 在以后的实验中选取增 塑剂的用量为 400 mg DBP. Figure 3 Effect of the amount of plasticizer on the electrode response 2.4 电极的稳定性 电极的稳定性可用电极电势随时间漂移的大小来 衡量 [19] . 漂移是指在组成和温度一定的溶液中, 电极测 得的电动势随时间的改变.…”

CHARACTERIZATION OF A NEW NEW Ag+ -SELECTIVE ELECTRODE BASED ON N3S5-THIAAZACROWN ETHER AS NEUTRAL IONOPHORE

“…It is clear that o-NPOE is more effective plasticizer than others in preparing the Ag + -ISEs, which can be explained by the fact that o-NPOE plasticized PVC membranes have much higher dielectric constants than DOS, DBP and DOP based membranes. 15 In addition, o-NPOE plasticized the membranes dissolve the ion association complexes and adjust both permittivity and ion exchanger sites mobility to give highest possible selectivity and sensitivity. 3.5×10 -6 53.1…”