Methodological approach to the study of the formation and physicochemical properties of phosphate-metal-humic complexes in solution.
The aim of this work is to study the suitability of the complementary use of ultrafiltration (UF) and the interaction with an anion-exchange resin (AR) to characterize of phosphate-metal-humic complexes in solution. The results indicate that a methodological approach consisting of the validation and calibration of the AR method by the UF method and the further use of the AR method is suitable for characterizing phosphate-metal complexes. Such an approach has proven to be useful for calculating the phosphate maximum binding capacity of iron-humic complexes and stability constants. It might also be used to obtain valuable purified phosphate-metal-humic complexes for further structural characterization.
Guardado
Iñaki
I
Department of Chemistry and Soil Chemistry, University of Navarra, 31080 Pamplona, Spain.
Urrutia
Oscar
O
Garcia-Mina
Jose M
JM
D000838:Anions; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004355:Drug Stability; D006812:Humic Substances; D007475:Ion Exchange Resins / Q000737:chemistry; D008670:Metals / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D012996:Solutions; D014462:Ultrafiltration
D000838:Anions; D006812:Humic Substances; D007475:Ion Exchange Resins; D008670:Metals; D010710:Phosphates; D012996:Solutions