title: Quenching of fluorescence of phenolic compounds and modified humic acids by cadmium ions.
abstract: The interaction of a number of phenolic compounds, being 'model fragments' of humic acids, with cadmium ions was investigated. The fluorescence quenching method was used to determine the complexation constants of these compounds with cadmium ions. It was established that bonding of phenolic compounds by cadmium ions at рН 7 is weak and reaches a maximum value of 15% for interaction with resorcinol. It was demonstrated that modification of humic acids by the mechanoactivation method increases by three times bonding of cadmium ions, which is caused by strengthening the acid properties of carboxyl and hydroxyl groups at the aromatic ring. Copyright © 2016 John Wiley & Sons, Ltd.
authors.affiliation: Tomsk State University, 36, Lenin Ave., Tomsk, 634050, Russia.
authors.forename: O N
authors.initials: ON
authors.lastname: Tchaikovskaya
authors.affiliation: Tomsk State University, 36, Lenin Ave., Tomsk, 634050, Russia.
authors.forename: L V
authors.initials: LV
authors.lastname: Nechaev
authors.affiliation: Federal State Budgetary Scientific Institution 'Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences', 4, Academicheskii Ave, Tomsk, 634021, Russia.
authors.forename: N V
authors.initials: NV
authors.lastname: Yudina
authors.affiliation: Federal State Budgetary Scientific Institution 'Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences', 4, Academicheskii Ave, Tomsk, 634021, Russia.
authors.forename: E V
authors.initials: EV
authors.lastname: Mal'tseva
mesh_terms: D002104:Cadmium / Q000737:chemistry*; D005453:Fluorescence; D006812:Humic Substances; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D006812:Humic Substances; D007477:Ions; D010636:Phenols; D002104:Cadmium
keywords: cadmium ions; complexation constants; humic acids; mechanoactivation; phenolic compounds