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APLIKASI SENYAWA AMIDA HUMAT SEBAGAI IONOFOR DALAM MEMBRAN ELEKTRODA SELEKTIF ION Ni (II)
Abstract
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. 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. This work aims at obtaining selectivity coefficient towards Ni2+ ion. The products of the reactions were observed using infra red (IR) spectrometer. 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 [orto-nitrophenil octyl ether (NPOE) or dioctylpthalate (DOP) or dibenzyl ether (DBE)], 2% of lipophilic anion [sodiumtetraphenylborate (NaTPB), and oleic acid], and 2% of ionophore the humic amide, respectively. The results show that ISE membrane give selective response to the Ni2+ ion at pH of 4,5 with response time of approximately 80 seconds. Among many others, the cations that give strong emf interference include Cu2+,Li+, K+, Pb2+, Na+, Zn2+, and Ca2+. The Nernstian factor of ISE membrane is close to +28 mV per decade with linear range of concentration of pNi2+ of 1-6, with composition PVC membrane, DBE as plasticizer, oleic acid as lipophilic anion, and humic amide as ionophore, respectively.
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Aiken, 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.
Alimin, 2000, Fraksinasi Asam Humat dan Pengaruhnya pada Kelarutan Ion Logam Seng (II), Kadmium (II), Magnesium (II) dan Kalsium (II), Tesis S2, UGM, Yogyakarta.
Andjelkoic, 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.
Andjelkoic, 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.
Arora, V.; Chawla, H.M.; Francis, T.; Nanda, M.; Singh, S.P., 2003, Synthesis of a new cesium selective calix[4]arene based chromoionophore. Ind. J. Chem. section a-inorganic bio-inorganic physical theoretical and analytical chemistry, 42, 3041-3043.
Buck, P.P., dan Lindner, E., 1994, IUPAC Recommendation for Nomenclature of Ion Slective Electrodes, Pure and Appl. Chem, 66, 2527-2536.
Crespilho, F.N., Zukolotto, V., Siqueira, J.R., Constantino, C.I.L., Nart, F.C., Oliveira, O.N., 2005, Immobilization of Humic Acid in Nanostructured Layer-by- Layer Films for Sensing Applications, Environ sci technol, 39, 5385-5389.
Christl, I., Metzger, A., Heidmann, I., and Kretzschmar, R., 2005, Effect of Humic and Fulvic Acid Concentrations and Ionic Strength on Copper and Lead Binding, Environ. Sci. Technol., 39 (14), 5319-5326.
Fessenden, R.J and Fessenden, J.S., 1986, Kimia Organik Jilid Kedua, Edisi Ketiga, Erlangga, Jakarta.
Galeska, I., Hickey, T., Moussy, F., Kreutzer, D., Papadimitrakopoulos, F., 2001, Characterization and Biocompatibility Studies of Novel Humic Acids Based Films as Membrane Material for an Implantable Glucose Sensor, Biomacromolecules, 2 (4), 1249-1255.
Gehrig, P., Morf, W.E., Welti, M., Pretsch, E., Simon, W., 1990, Catalysis of Ion Transfer by Tetraphenylborates in Neutral Carrier-Based Ion Selective Electrode, Helv. Chim. Acta, 73, 203-212.
Gupta, V.K.; Jain, A.K.; Singh, L.P.; Khurana, U., 1997, Porphyrins as carrier in PVC based membrane potentiometric sensors for nickel(II). Anal. Chim. Acta, 355, 33-41.
Gyurcsanyi, R.E., Pergel, E., Nagy, R., Kapui, I., Lan, B.T.T., Toth, K., Bitter, I., dan Lidner, E., 2001, Direct Evidence of Ionic Fluxes Across Ion-Selective Membranes: A Scanning Electro-Chemical Microscopic and Potentiometric Study, Anal. Chem., 73, 2104-2111.
Heng, L.Y., dan Hall, E.A.H., 2000, Producing “Self-Plastizing” Ion Selective Membrans, Anal. Chem, 72, 42-51.
Huheey, J.E., Keiter, E.A., Keiter, R.L., 1993, Inorganic Chemistry: Principles of Structure and Reactivity, Fourth Edition, Harper Collins College Publisher.
Mahajan, R.K., Kaur, I., Sharma, V., dan Kumar, M., 2002, Sensor of Silver(I) Ion Based on Schiff-Base-p-tert-Butyl-Calix[4]arene, Sensor, 2, 417-423.
Malinski, T.; Ciszewski, A,; Fish, J.R., 1990, Conductive Polymeric Tetrakis(3-methoxy-4-hydroxyphenyl)porphyrin Film Electrode for Trace Determination of Nickel. Anal. Chem., 62, 909-914.
Margon, A., Pastrello, A., Arcon, I., Contin, M., and Leita, L., 2008, Humic Acids may Favour the Persistence of Hexavalent Chromium in Soil, Geophysical Research Abstracts, EGU Vol. 10, 1-2.
Shahrokhian, S., Amini, M.K., Kia, R., Tangestaninejad, 2000, Salicylate-Selective Electrodes Based on Calix[4]arene Methyl Ketonic Derivative, Anal. Sci., 17, 889-892.
Shinohara, T.; Higuchi, H.; Senba, Y.; Ohto, K.; Yoshizuka, K.; Inoue, K., 2001, Silver Ion Selective Electrode Based on Calix[4]arene Methyl Ketonic Derivative. Anal. Sci., 17, 889-892.
Silverstein, R.M., Bassler, G.C., Morill, T.C., 1991. Spectrometric Identification of Organic Compound, Fifth Edition, John Wiley and Sons, Inc., New York.
Skoog, D.A., West, D.M., Holler, F.J., 2000, Analytical Chemistry, An Introduction, Sixth Edition, Saunders Colleges Publishing, Philadelphia.
DOI: https://doi.org/10.33394/j-ps.v1i1.520
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