title: Spectrophotometric study and analytical application of the reaction between manganese(II) and 4-(2-pyridylazo)resorcinol.
abstract: A highly sensitive method for spectrophotometric determination of manganese(II) with 4-(2-pyridylazo)resorcinol (PAR) as reagent is described. The molar absorptivity of the complex was found to be 8.65 +/- 0.04 x 10(4). The stability constant of the ML(2) complex was found to be log beta(2) = 15.6. Beer's law is obeyed within the range 0.02-0.5 microg of Mn/ml. An application of this reaction for analytical purposes is described.
authors.affiliation: Department of Analytical Chemistry, University of Sofia, 1 Anton Ivanov Avenue, Sofia 26, Bulgaria.
authors.forename: D
authors.initials: D
authors.lastname: Nonova
authors.forename: B
authors.initials: B
authors.lastname: Evtimova