Simultaneous detection of SO3 2- and PO4 3- anions, in aqueous solutions based on 4-(2-Pyridylazo) resorcinol (PAR) as a colorimetric chemosensor and analytical applications

Herein, we have presented a novel bare eye detection method which is based on the anion competing for a metal receptor with a chromogenic indicator. In this essay, there are highly specific interac...