section a-inorganic bio-inorganic physical theoretical and analytical chemistry, 42, 3041-3043.īuck, P.P., dan Lindner, E., 1994, IUPAC Recommendation for Nomenclature of Ion Slective Electrodes, Pure and Appl.
Singh, S.P., 2003, Synthesis of a new cesium selective calixarene based chromoionophore. The Nernstian factor of ISE membrane is close to +28 mV per decade with linear range of concentration of pNi 2+ of 1-6, with composition PVC membrane, DBE as plasticizer, oleic acid as lipophilic anion, and humic amide as ionophore, respectively.Īiken, G.R., Mc Knight, D.M., Wershaw, R.L., and Mac Carthy, P., 1985, Humic Substances in Soils, Sediment and Water: Geochemistry, Isolation and Characterization, John Wiley and Sons, Inc., New York.Īlimin, 2000, Fraksinasi Asam Humat dan Pengaruhnya pada Kelarutan Ion Logam Seng (II), Kadmium (II), Magnesium (II) dan Kalsium (II), Tesis S2, UGM, Yogyakarta.Īndjelkoic, T., Perovic, J., Purenovic, M., Blagojevic, S., Nikolic, R., Andjelkovic, D., Bojic, A., 2006, Acidity of Humic Acid Related to its Oxygen-Containing Functional Groups, Bulletin of the Chemist and Technologists of Macedonia, 25 (2), 131-137.Īndjelkoic, T., Perovic, J., Purenovic, M., Blagojevic, S., Nikolic, R., Andjelkovic, D., Bojic, A., 2006, A Direct Potentiometric Titration Study of the Dissociation of Humic Acid with Selectively Blocked Functional Groups, Ecletica Quimica, 31 (3), 39-46.Īrora, V. Among many others, the cations that give strong emf interference include Cu 2+ ,Li +, K +, Pb 2+, Na +, Zn 2+, and Ca 2+. The results show that ISE membrane give selective response to the Ni 2+ ion at pH of 4,5 with response time of approximately 80 seconds. The amide compound derived from humic acid was immobilized into the membrane with composition percentage (w/w) as the following 32% of PVC, 64% of plasticizer of either, 2% of lipophilic anion, and 2% of ionophore the humic amide, respectively. The products of the reactions were observed using infra red (IR) spectrometer. This work aims at obtaining selectivity coefficient towards Ni 2+ ion.
The carboxylic acid group of the humic acid was first modified to the corresponding amide and is expected to form complex with the target cation.
The amide compound derived from humic acid has been applied as ionophore in ion selective electrode (ISE) measurement based on poly vinyl chloride (PVC) membrane.
0 kommentar(er)
