Galík A
Lachema, N.C., Kaznejov, Pilsen North, Czechoslovakia.
Talanta. 1969 Feb;16(2):201-13. doi: 10.1016/0039-9140(69)80271-7.
The possibility of using PAN as a titrant in spectrophotometric extractive titrations has been investigated. Conditions suitable for the titration of zinc and of cadmium were found, with the aid of equations derived earlier and after investigation of the absorption spectra and pH- and reagent-dependence of the extraction of the chelates involved. For the purpose of spectrophotometric extractive titration of copper with PAN the formation and extraction of ion-association pairs CuPAN(+).Br(-) and CuPAN(+).CNS(-) were studied in detail. This titration was found to be highly selective. Dilute solutions of PAN in ethanol are much more stable than solutions of dithizone.
研究了将PAN用作分光光度萃取滴定中滴定剂的可能性。借助先前推导的方程式，并在研究了相关螯合物的吸收光谱以及萃取对pH和试剂的依赖性之后，找到了适合滴定锌和镉的条件。为了用PAN对铜进行分光光度萃取滴定，详细研究了离子缔合对CuPAN(+)·Br(-)和CuPAN(+)·CNS(-)的形成和萃取。发现该滴定具有高度选择性。PAN在乙醇中的稀溶液比双硫腙溶液稳定得多。
