US EPA

8702066 

Journal Article 

The potentiometric sensor for express determination of polyhexamethylene guanidine salts 

Mironyak, MO; Volnyanska, OV; Manzuk, MV; Labyak, OV; Nikolenko, MV; Kovalenko, VL; Kotok, VA; Verbitsky, VV 

2020 

15 

1 

71-77 

English 

A potentiometric sensor for the quantitative determination of polyhexamethylene guanidine salts was developed. The ionic associate of the degradation product of polyhexamethylene guanidine-hexamethylenediamine salts with heterogeneous acids with the Keggin structure was used as an electrode-active substance for the plasticized polyvinyl chloride membrane of the sensor. The anions of 12-molybdophosphate and 12-tungstenphosphate heteropolyacids were used as counterions for ionic associates. The influence of a qualitative and quantitative composition of the membrane, a type of degradation of polyhexamethylene guanidine salts, a nature of the membrane solvent-plasticizer, pH of the test solution, a presence of interfering ions in the solution on the electrode characteristics of the membrane of the developed sensor (tilt angle, minimum detectable concentration) were investigated. The optimum conditions for the quantitative determination of polyhexamethylene guanidine salts through the product of their degradation (hexamethylenediamine) by the potentiometric method with the developed sensor were established. 2006-2020 Asian Research Publishing Network (ARPN). All rights reserved. 

12-molybdophosphate heteropoly acid; 12-tungsten phosphate heteropoly acid; Heteropolyanion; Hexamethylene diamine; Polyhexamethylene guanidine phosphate; Potentiometric sensor