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El-Asmy, Ahmed A.
- Zincon Polymer as a New Modifier for Selective Separation and Determination of Copper and Zinc from Synthetic, Water and Drug Samples
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Authors
Affiliations
1 Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, EG
1 Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, EG
Source
Indian Journal of Science and Technology, Vol 2, No 2 (2009), Pagination: 78-84Abstract
Chloromethyl polystyrene polymer (CMPSpolymer) has been modified with 2-carboxy-2-hydroxy- 5-sulfoformazyl benzene (Zincon) to be used as a new reagent for preconcentration of Cu(II) and Zn(II) ions. The modified polymer (Z-polymer) has been characterized by elemental analysis and IR spectra. Batch and column modes were operated. The newly designed polymer sorbs Cu(II) and Zn(II) quantitatively at pH 7 with flow rate of 5 ml min-1. The maximum sorption capacities for Cu(II) and Zn(II) ions were 1.26 and 1.04 mmol g-1. The preconcentration factors were 250 and 200 for Cu(II) and Zn(II) ions. The limit of detection was 4 and 5 ng ml-1 for Cu(II) and Zn(II) ions. The desorption was effective by using 5 ml of 0.1 mol l-1 HCl or HNO3 prior to detection using AAS. The modified polymer was highly ion-selective even in the presence of large concentration of electrolytes or organic media, with a preconcentration ability for Cu(II) and Zn(II) ions. The modified polymer was tested on its utility with synthetic, natural water and drug samples, showing RSD value of < 3% which reflects good accuracy and reproducibility.Keywords
Chloromethyl Polystyrene Polymer, Preconcentration of Cu(II) And Zn(II) IonsFull Text
References
- Beiraghi AH and Babaee SD (2008) Separation and preconcentration of ultra trace amounts of beryllium in water samples using mixed micellemediated extraction and determination by inductively coupled plasma-atomic emission spectrometry, Anal. Chim. Acta. 607, 183–190.
- Chaudhari AR, Nagpurkar LP and Ekhe JD (2003) Uptake of heavy metal ions by carbonaceous material obtained from industrial waste lignin using microwave irradiation, Asian J. Chem. 15, 917–924.
- Das N and Das J (1989) Preconcentration and separation of gold (III) and silver (I), from each other and from base metals using a chelating ion exchanger containing quinaldinic acid amide group, J. Ind. Chem. Soc. 66(8-10), 724-27.
- de IL Alcantara, Roldan PS, Margionte MAL, Castroa GR, Padilha CCF, Florentino AO and Padilha PM (2004) Determination of Cu, Ni and Pb in aqueous medium by FAAS after preconcentration on 2-aminothiazole modified silica gel, J. Braz. Chem. Soc. 15, 366–371.
- El-Shazly RM, El-Hazmi GAA, Ghazy SE, El- Shahawi MS and El-Asmy AA (2005) Spectroscopic, thermal and electrochemical studies on some nickel(II) thiosemicarbazone complexes, Spectrochim. Acta. 61A, 243-252.
- Gjerde DT, Wiederin DR, Smith FG and Mattson BM (1993) Metal speciation by means of microbore columns with direct-injection nebulization by inductively coupled plasma atomic emission spectroscopy, J. Chromatogr. 640, 73–78.
- Godlewska-Zylkiewicz B (2004) Preconcentration and separation procedures for the spectrochemical determination of platinum and palladium, Microchim. Acta. 147, 189–210.
- Hafez MAH, Kenawy IMM, Akl MA and Lashein RR (2001) Preconcentration and separation of total mercury in environmental samples using chemically modified chloromethylated polystyrene- PAN(ion-exchanger) and its determination by cold vapour atomic absorption spectrometry, Talanta. 53, 749–760.
- Hassanien MM, Kenawy IM, El-Menshawy AM and El-Asmy AA (2007) Separation and preconcentration of gallium(III), indium(III) and thallium(III) using new hydrazone modified resin, Anal. Sci., Jpn. 23(12), 1403.
- Jamali MR, Assadi Y, Shemirani F and Niasari MS (2007) Application of thiophene-2-carbaldehydemodified mesoporous silica as a new sorbent for separation and preconcentration of palladium prior to inductively coupled plasma atomic emission spectrometric determination, Talanta. 71, 1524– 1529.
- Lemos VA, Baliza PX, Santos JS, Nunes LS, Jesus AA and Rocha ME (2005) A new functionalized resin and its application in preconcentration system with multivariate optimization for nickel determination in food samples, Talanta. 66, 174– 180.
- Narin I, Soylak M, Elci L and Dogan M (2000) Determination of trace metal ions by AAS in natural water samples after preconcentration of pyrocatechol violet complexes on an activated carbon column, Talanta. 52. 1041–1046.
- Narin I, Tuzen M and Soylak M (2004) Aluminium determination in environmental samples by graphite furnace atomic absorption spectrometry after solid phase extraction on Amberlite XAD- 1180/pyrocatechol violet chelating resin, Talanta. 63, 411–418.
- Rao TP and Daniel S (2003) Preconcentration of trace and ultratrace amounts of platinum and palladium from real samples, Rev. Anal. Chem. 22, 167–189.
- Shamsipur M, Ghiasvand AR and Yamini Y (1999) Solid-phase extraction of ultrace uranium(II) in natural waters using octadecyl silica membrane disks modified by tri-n-octylphosphine oxide and its spectrophotometric determination with dibenzoylmethane, Anal. Chem. 71, 4892–4895.
- Soylak M, Karatepe AU, Elci L and Dogan M (2003) Column preconcentration/ separation and atomic absorption spectrometric determinations of some heavy metals in table salt samples using Amberlite XAD- 1180, Turk. J. Chem. 27, 235–242.
- Soylak M, Narin I, Bezerra MA and Ferreira SLC (2005) Factorial design in the optimization of preconcentration procedure for lead determination by FAAS, Talanta. 65, 895–899.
- Strickland J and Parsons T (1968) A Practical Handbook of Seawater Analysis, Fish Res. Bd., Can. Bull. 167, 311.
- Tokalioglu S, Buyukbas H and Kartal S (2006) Preconcentration of trace elements by using 1-(2- pyridylazo)-2-naphthol functionalized Amberlite XAD-1180 resin and their determination by FAAS, J. Brazil Chem. Soc. 17, 98–106.
- Tuzen M, Soylak M, Elci L and Dogan M (2004) Column solid phase extraction of copper, iron and zinc ions at trace levels in environmental samples on Amberlite XAD-7 for their flame atomic absorption spectrometric determinations, Anal. Lett. 37, 1185–1201.
- Xu Y, Zhou J, Wang G, Zhou J and Tao G (2007) Determination of trace amounts of lead, arsenic, nickel and cobalt in high-purity iron oxide pigment by inductively coupled plasma atomic emission spectrometry after iron matrix removal with extractant-contained resin Anal. Chim. Acta. 584, 204–209.
- Synthesis, Characterization and Biological Activity of (E1, E2) N1,N2- Bis[1-(3,4-dihydroxyphenyl)ethylidene]oxalohydrazide Complexes: New Method for ZrO2+ Separation
Abstract Views :371 |
PDF Views:75
Authors
Affiliations
1 Chemistry Department, Faculty of Science, Mansoura University, Mansoura, EG
1 Chemistry Department, Faculty of Science, Mansoura University, Mansoura, EG
Source
Indian Journal of Science and Technology, Vol 2, No 3 (2009), Pagination: 9-15Abstract
The bond length, bond angle, HOMO, LUMO, dipole moment and charges on the atoms have been calculated to confirm the geometry of (E1, E2) N1,N2 - bis[1-(3,4-dihydroxyphenyl)ethylidene]oxalohydrazide, H6DPOH. The metal complexes of Cr3+, VO2+, ZrO2+, HfO2+, UO2 2+ and MoO2 2+ with H6DPOH have been prepared and characterized by partial elemental analysis, spectral studies (electronic; IR), thermal analysis and magnetic measurements. The data suggest the formation of [Cr(H4DPOH)(H2O)3Cl]H2O, [VO(H4DPOH)(H2O)2], [Hf(H4DPOH)(H2O)]H2O [UO2(H4DPOH)(H2O)2]2H2O [MoO2(H4DPOH)] and [(ZrO)2(H2DPOH)(C2H5OH)2]. H6DPOH behaves as a dibasic bidentate in all complexes except ZrO2+ which acts as a tetrabasic tetradentate for the two ZrO2+ ions. An octahedral geometry was proposed for the Cr3+, HfO2+, MoO2 2+and UO2 2+ complexes and square pyramid for VO2+. The Cr(III) or VO2+ complexes are necessary to degrade the DNA of Eukaryotic subject completely; the other complexes have little effect. H6DPOH was found applicable as a new reagent for the separation and preconcentration of ZrO2+ ions from different water samples using flotation technique with satisfactory results.Keywords
(E1, E2) N1,N2 - bis[1-(3,4-dihydroxyphenyl) ethylidene]oxalohydrazideFull Text
References
- Al-Gammal OA and El-Asmy AA (2008) Synthesis and spectral characterization of 1-(amino-N-phenylform)-4- ethylthiosemicarbazide and its metal complexes. Coord. Chem. 61 (14), 2296-2306.
- El-Asmy AA, Khalifa ME and Hassanian MM (1998) Synthesis and spectroscopic studies on novel transition metal complexes of 3-oximino-3-(2- pyridylcarbamoyl) propane-2-one. Synth. React. Inorg- Met- Org. Chem. 28 (6), 873-892.
- El-Asmy AA, Khalifa ME and Hassanian MM (2004) Synthesis and characterization of transition metal complexes containing oxime, amido and thioamido groups. Ind. J. Chem. 43A, 92-97.
- El-Asmy AA, Hafez MA, Saad EM and Taha FT (1994) Electrochemical synthesis of benzoylglycine and ethylphthaloylglycine complexes of transition metal ions. Transition Met. Chem. 19, 603-605.
- El-Asmy AA, Khalifa ME and Hassanian MM (2001) Synthesis of mono and binuclear complexes of oximinoacetoacetanilide-4-phenylthiosemicarbazone. Synt. React. Inorg- Met- Org. Chem. 31 (10), 1787-1801.
- El-Asmy AA, Khalifa ME, Rakha TH, Hassanian MM and Abdallah AM (2000) Mono and trinuclear complexes of oximinoacetoacetyl-pyridine-4-phenyl thiosemicarbazone. Chem. Pharm. Bull. 48(1), 41-44.
- El-Asmy, AA Al-Gammal OA and Saleh H (2008) Spectral thermal, electrochemical and analytical studies on Cd(II) and Hg(II) thiosemicarbazone complexes. Spectrochimica Acta. 71, 39-44.
- El-Metwally NM and El-Asmy AA (2006) Chelating activity of bis(diacetylmonoxime)thiocarbohydrazone towards VO2+, Co(II), Ni(II), Cu(II) and Pt(IV) ions. Coord. Chem. 59 (14), 1591-1601.
- El-Metwally NM, El- Shazly RM, Gabr IM and El- Asmy AA (2005) Physical and spectroscopic studies on novel vanadyl complexes of some substituted thiosemicarbazides. Spectrochim. Acta. 61(A),1113-1119.
- El-Metwally NM, Abou-Hussen AA and El-Asmy AA (2006) Synthesis and spectroscopic characterization of oxalyl bis-(diacetylmonoximehydrazone) metal complexes. IJPAC 1, 75-81.
- El-Sonbati AZ, Diab MA and El-Asmy AA (1989) Uranium(VI) complexes of some Schiff bases derived from hydroxyaromatic aldehyde and ketone. Synth. React. Inorg. Met-Org. Chem. 19(7), 731-740.
- Gangadharmath UB, Annigeri SM, Naik AD, Revankar VK and Mahale VB (2001) Synthesis, characterisation and evaluation of molecular-orbital parameters, spinorbit, dipolar and fermi-contact terms of VO2+ ion in thiosemicarbazone complexes. J. Mol. Struct. 572, 61-71.
- Huo LH, Lu ZZ, Gao Shan Zhao, Hui NG and Seik Weng (2004) Bis[μ-3-(hydroxyimino)butan-2-one benzoylhydrazonato]bis[pyridinecopper(II)] methanol solvate. Acta. Cryst. E 60, 1611-1613.
- Jones LH (1958) Systematics in the vibrational spectra of uranyl complexes Spectrochim. Acta. 10, 395-403.
- Khasa S, Seth VP, Gahlot PS, Agarwal A, Krishna RM and Gupta SK (2003) Electron paramagnetic resonance, optical transmission spectra and DC conductivity studies of vanadyl-doped alkali halide borate glasses. Physica B. 334, 347-358.
- Kiverlson D and Lee SK (1964) ESR Studies and the Electronic Structure of Vanadyl Ion Complexes. J. Chem. Phys. 41, 1896-1903.
- Latha KP, Vaidya VP and Keshavayya (2004) Comparative Studies on Metal Complexes of 2-Acetylnaphtho[2,1-b]furan Oxime and 2-Benzoylnaphtho[2,1-b]furan Oxime Synth. React. Inorg- Met-Org. Chem. 34(4), 667-686.
- McGlynn SP and Smith JK (1961) Electronic Structure, Spectra, and Magnetic Properties of Oxycations. III. Ligation Effects on the Infrared Spectrum of the Uranyl Ion. J. Chem. Phys. 35,105-116.
- McGlynn SP, Smith JK and Neely WC (1961) The electronic structure, spectra, and magnetic properties of actinyl ions: Part I. The uranyl ion. J. Mol. Spectrosc. 6,164-187.
- McMaster T, Garducci MD, Yang YS, Solomon EI and Enemark JH (2001) Electronic Spectral Studies of Molybdenyl Complexes. 2. MCD Spectroscopy of [MoOS4]- Centers. Inorg. Chem. 40(4), 687-702.
- Mostafa MM, El-Asmy AA and Ibrahim GM (1983) The direct electrochemical synthesis of tin, cobalt, copper, zinc, cadmium and silver 7-formyl-8-hydroxyquinoline complexes. Trans. Met Chem. 8, 54-56.
- Periin DD (1976) Topics in Current Chemistry. Springer Verlag, New York. p: 181.
- Raman N, Kulandalsamy A and Thangaraja C (2003) Redox and antimicrobial studies of transition metal(II) tetradentate Schiff base complexes. Transition Met. Chem. 28, 29-36.
- Ranford JD, Vittal JJ and Wang YM (1998) Dicopper(II) complexes of the antitumor analogues acylbis(salicylaldehyde hydrazones) and crystal structures of monomeric [Cu(2)(1,3-propanedioyl bis(salicylaldehyde hydrazone))(H(2)O)-(2)].(ClO(4)) (2).3H(2)O and polymeric [{Cu(2)(1,6-hexanedioylbis (salicyl-aldehydehydrazone))(C(2)H(5) OH)(2)}(m)()] (ClO(4))(2)(m)().m(C(2)H(5)OH). Inorg. Chem. 37 (6), 1226-1231.
- Saracoglu H, Duran C, Soylu S, Andac O, Bati H and Calisken N (2004) 3-[(2,4-Dinitrophenyl)hydrazono] butan-2-one oxime. Acta Cryst. (E) 60, 1307-1309.
- Shallaby AM, Mostafa MM, Ibrahim KM and Moussa MNH (1984) New uranyl(VI) complexes with hydrazone-oximes derived from aromatic acid hydrazides and biacetyl-monoxime. Spectrochim. Acta. 40A, 999-1002.
- Syamal A and Ram Maurya M (1986) Synthesis and characterization of new dioxomolybdenum(VI) complexes of ONS donor Schiff bases derived from thiosemicarbazide, S-methyldithiocarbazate, Sbenzyldithiocarbazate and o-hydroxy-aromatic aldehydes/ketones. Transition . Chem. 11, 255-258.
- Thaker BT, Lekhadia J, Potel A and Thaker P (1994) Mononuclear and long-range single-bridged binuclear complexes of oxovanadium(IV) involving conjugated heterocyclic nitrogen base and heterocyclic β-diketones. Transition Met. Chem. 19, 623-631.
- Vogel AI (1994) Text book of quantitative inorganic analysis. Longmans, London.