Two new cyclic pentacoordinative organotin(IV) complexes, 2,4-dihydroxyacetophenone tribenzyltin(HAPTBT) and 2,4-dihydroxyacetophenone triphenyltin(HAPTPT) were synthesized and used as anion ionophore for PVC membrane...Two new cyclic pentacoordinative organotin(IV) complexes, 2,4-dihydroxyacetophenone tribenzyltin(HAPTBT) and 2,4-dihydroxyacetophenone triphenyltin(HAPTPT) were synthesized and used as anion ionophore for PVC membrane electrode. The new electrodes exhibit specificity selectivity for salicylate. The electrode based on HAPTBT as a neutral carrier displays a highly potentiometric response to salicylate and an anti-Hofmeister selectivity sequence in the following order: Sal- > SCN- > I- > NO2- > Br- > Cl- > ClO4- > NO3- > SO42-. The electrode has the advantages of fast response, stability and reproducibility, simplicity. The response mechanism is discussed in view of UV spectroscopy technique. The results show that there are close relationship between the potentiometric response characteristics and structure of organotin(IV) complexes. The electrode was applied to medicine analysis with satisfactory results.展开更多
A new highly selective salicylate electrode based on N,N’-bis(3-nitrosalicylidene)-2,6-Pyridinediamine manganese(Ⅱ) complex[Mn(Ⅱ)-BNSPD]as neutral carrier is studied first,which displays an excellent electric poten...A new highly selective salicylate electrode based on N,N’-bis(3-nitrosalicylidene)-2,6-Pyridinediamine manganese(Ⅱ) complex[Mn(Ⅱ)-BNSPD]as neutral carrier is studied first,which displays an excellent electric potential response and an anti-Hofmeister selectivity sequence which is:Sal->SCN-> ClO4-> I-> Br-> NO3-> Cl-> NO2-> SO32-> SO42-.The electrode exhibits Nernstian potential linear range to salicylate from 1.0×10-1 to 6.0×10-6 mol·dm-3 with a detection limit 2.0×10-6 mol·dm-3 and a slope of 58.5 mV/dec in pH 5.0 of phosphorate buffer solution at 28℃.The electrode response mechanism is studied with the UV spectroscopy technology.The electrode is designed to be applied in medicine analysis with a satisfactory result worked out.展开更多
文摘Two new cyclic pentacoordinative organotin(IV) complexes, 2,4-dihydroxyacetophenone tribenzyltin(HAPTBT) and 2,4-dihydroxyacetophenone triphenyltin(HAPTPT) were synthesized and used as anion ionophore for PVC membrane electrode. The new electrodes exhibit specificity selectivity for salicylate. The electrode based on HAPTBT as a neutral carrier displays a highly potentiometric response to salicylate and an anti-Hofmeister selectivity sequence in the following order: Sal- > SCN- > I- > NO2- > Br- > Cl- > ClO4- > NO3- > SO42-. The electrode has the advantages of fast response, stability and reproducibility, simplicity. The response mechanism is discussed in view of UV spectroscopy technique. The results show that there are close relationship between the potentiometric response characteristics and structure of organotin(IV) complexes. The electrode was applied to medicine analysis with satisfactory results.
文摘A new highly selective salicylate electrode based on N,N’-bis(3-nitrosalicylidene)-2,6-Pyridinediamine manganese(Ⅱ) complex[Mn(Ⅱ)-BNSPD]as neutral carrier is studied first,which displays an excellent electric potential response and an anti-Hofmeister selectivity sequence which is:Sal->SCN-> ClO4-> I-> Br-> NO3-> Cl-> NO2-> SO32-> SO42-.The electrode exhibits Nernstian potential linear range to salicylate from 1.0×10-1 to 6.0×10-6 mol·dm-3 with a detection limit 2.0×10-6 mol·dm-3 and a slope of 58.5 mV/dec in pH 5.0 of phosphorate buffer solution at 28℃.The electrode response mechanism is studied with the UV spectroscopy technology.The electrode is designed to be applied in medicine analysis with a satisfactory result worked out.
