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Wang S, Wang L, Zhu Y, Song Y. Fluorescent detection of S 2- based on ZnMOF-74 and CuMOF-74. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 236:118327. [PMID: 32315951 DOI: 10.1016/j.saa.2020.118327] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/30/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
The detection of S2- is of great significance because excess S2- can lead to a variety of serious physiological diseases. Here, two metal-organic frameworks (MOFs), ZnMOF-74 and CuMOF-74, were synthesized by using 2,5-dihydroxy terephthalic acid with strong fluorescence as organic ligand and Zn2+ or Cu2+ as central coordination ions for S2- detection. Both as-prepared ZnMOF-74 and CuMOF-74 displayed nanospheres with a diameter of about 100 nm. Under the excitation of 353 nm, the ZnMOF-74 had a characteristic emission peak at 537 nm and the CuMOF-74 had a characteristic emission peak at 528 nm under excitation of 356 nm. The interaction of S2- and Zn2+ weakened the fluorescence of ZnMOF-74 but the interaction of S2- with Cu2+ to form CuS restored the fluorescence of CuMOF-74, so the ZnMOF-74 and CuMOF-74 were exploited as a fluorescent nanosensor for sensing S2-. The ZnMOF-74 sensor has a good linear range of 19.6 nmol L-1-90.0 μmol L-1, and the limit of detection was as low as 6.53 nmol L-1. The CuMOF-74 sensor has a good linear relationship with II0 in the S2- concentration range of 1.50 nmol L-1-125 μmol L-1, and the limit of detection was 1.50 nmol L-1. The proposed ZnMOF-74 and CuMOF-74 sensor could also detect S2- in actual samples.
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Affiliation(s)
- Shiqi Wang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Chemical Biology, Jiangxi Province, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Li Wang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Chemical Biology, Jiangxi Province, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yongmei Zhu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Chemical Biology, Jiangxi Province, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Yonghai Song
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Chemical Biology, Jiangxi Province, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China.
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Synthesis of Trifluoroacetylacetone Resin Through Schiff’s Base Reaction for Treatment of Cadmium-Contaminated Water. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2020. [DOI: 10.1007/s13369-020-04504-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Fu J, Yao K, Li B, Mei H, Chang Y, Xu K. Coumarin-based colorimetric-fluorescent sensors for the sequential detection of Zn 2+ ion and phosphate anions and applications in cell imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117790. [PMID: 31757708 DOI: 10.1016/j.saa.2019.117790] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/06/2019] [Accepted: 11/11/2019] [Indexed: 06/10/2023]
Abstract
Two novel coumarin based fluorescent sensors CHP and CHS have been synthesized for the sequential detection of Zn2+ ion and phosphate anion (PA) in DMF/HEPES buffer medium (1/5 v/v, 10 mM, pH = 7.4). On the addition of Zn2+ ion to the solution of CHP or CHS resulted in a pronounced fluorescence enhancement, accompanying noticeable color change (under UV or daylight), while there was hardly obvious change with other competing metal ions co-existing. The detection limits (DL) of CHP and CHS toward Zn2+ were separately determined as 1.03 × 10-7 (R2 = 0.9886) and 1.87 × 10-7 (R2 = 0.9902). The PET binding processes were affirmed by spectroscopic techniques, HRMS experiments and theoretical calculations. Subsequently, the CHP-Zn2+ or CHS-Zn2+ complexes showed high selectivity fluorescence quenching toward PA by snatching Zn2+ ion from its complex and the binding processes were reversible. DLs were calculated as 2.07 × 10-7 M (R2 = 0.9928) and 2.63 × 10-7 M (R2 = 0.9954), respectively. Furthermore, the cell imaging experiments demonstrated that the sensors were capable of detecting of Zn2+ and PA in vitro cells.
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Affiliation(s)
- Jiaxin Fu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Kun Yao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Bai Li
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Huihui Mei
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Yongxin Chang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Kuoxi Xu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China.
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Development of a novel fluorescent probe for Zn2+/Cu2+/S2− in different solutions based on benzocoumarin derivative. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.112091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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5
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Kulomäki S, Lahtinen E, Perämäki S, Väisänen A. Determination of mercury at picogram level in natural waters with inductively coupled plasma mass spectrometry by using 3D printed metal scavengers. Anal Chim Acta 2019; 1092:24-31. [DOI: 10.1016/j.aca.2019.09.075] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 09/20/2019] [Accepted: 09/26/2019] [Indexed: 01/09/2023]
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6
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Zeinali S, Khalilzadeh M, Bagheri H. Generic extraction medium: From highly polar to non-polar simultaneous determination. Anal Chim Acta 2019; 1066:1-12. [DOI: 10.1016/j.aca.2019.03.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 03/16/2019] [Accepted: 03/19/2019] [Indexed: 12/28/2022]
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7
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SN-Donor Methylthioanilines and Copper(II) Complexes: Synthesis, Spectral Properties, and In Vitro Antimicrobial Activity. HETEROATOM CHEMISTRY 2019. [DOI: 10.1155/2019/9203435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Methylthioanilines, a series of sulfur-nitrogen donor ligands substituted with OCH3, CH3, Cl, and Br, and their copper(II) complexes have been synthesized and characterized by 1H and 13C NMR, elemental analysis, FTIR, UV-Vis and EPR spectra, molar conductance, and magnetic susceptibility measurements. The NMR spectra of the ligands revealed that the para/ortho protons and para carbon were sensitive to the electronic effect of substituents. The CHNS analysis presented CuLCl2 (L = OCH3, CH3, Cl) and CuL2Cl2 (L = Br) stoichiometries for the copper complexes. FTIR spectra showed that the bidentate ligands were coordinated to the copper ion through their nitrogen and sulfur atoms. The electronic spectra have suggested square planar and octahedral geometries for these complexes. The EPR spectra demonstrated that the solid state copper(II) complexes possess dx2–y2 orbital ground state and g∥ > g⊥ > 2.0023 in a tetragonal environment. The compounds were evaluated for in vitro antimicrobial activity against S. aureus, B. subtilis, E. coli, and C. albicans. The copper complexes showed higher activity than the parent ligands against S. aureus and B. subtilis; the electron-donating OCH3 and CH3 derivatives were more active than the withdrawing Br- and Cl-substituted compounds.
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8
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A simple quinoline derivative as fluorescent probe with high sensitivity and selectivity for Al3+ in aqueous solution. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.10.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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9
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Khalil TE, Elbadawy HA, El-Dissouky A. Synthesis, characterization and physicochemical studies of new chelating resin 1, 8-(3, 6-dithiaoctyl)-4-polyvinylbenzenesulphonate (dpvbs) and its metallopolymer Cu(II), Ni(II), Co(II) and Fe(III) complexes. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Separation and Pre-Concentration of Pb and Cd in Water Samples Using 3-(2-hydroxyphenyl)-1H-1,2,4-triazole-5(4H)-thione (HTT) and Their Determination by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). METALS 2017. [DOI: 10.3390/met7070240] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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López Guerrero M, Siles Cordero M, Vereda Alonso E, García de Torres A, Cano Pavón J. Cold vapour generation electrothermal atomic absorption spectrometry and solid phase extraction based on a new nanosorbent for sensitive Hg determination in environmental samples (sea water and river water). Microchem J 2017. [DOI: 10.1016/j.microc.2017.02.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Vellaichamy S. Adsorptive separation of copper, nickel, lead, zinc and cadmium from aqueous solution using MWCNTs impregnated with D2EHPA and prior to their determination by FAAS: Kinetic and equilibrium studies. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2016.1263660] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- S. Vellaichamy
- Department of Chemistry, Anna University, Chennai, Tamil Nadu, India
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Analysis of Some Trace Metals in Fish Species after Preconcentration with Congo Red on Amberlite XAD-7 Resin by Flame Atomic Absorption Spectrometry. J CHEM-NY 2016. [DOI: 10.1155/2016/1365171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A new procedure for separation and preconcentration of trace amounts of Cu(II), Ni(II), Fe(III), Zn(II), Cr(III), Cd(II), and Pb(II) in fish samples was proposed. The procedure is based on the adsorption of these metal ions on the column of Amberlite XAD-7 as congo red complexes prior to their determination by flame atomic absorption spectrometry (FAAS). Several factors that can affect the sorption and elution efficiency of the metal ions were investigated and optimized. The sorption was quantitative in the pH range of 6.0–9.0 for Cu(II) and Ni(II), 5.5–8.0 for Fe(III), 6.0–8.5 for Zn(II) and Cd(II), and 7.0–8.5 for Cr(III) and Pb(II). The optimum pH for simultaneous retention was 7.5. The sorption capacity of the resin was found to be 0.89, 0.72, 0.82, 0.61, 0.53, 0.84, and 0.78 mg/g for Cu(II), Ni(II), Fe(III), Zn(II), Cr(III), Cd(II), and Pb(II), respectively. The precision of the method was evaluated as the relative standard deviation obtained by analyzing a series of six replicates and below 6% for all seven elements. The validation of the method was performed by the analysis of certified reference materials. The proposed method was successfully applied to separation/preconcentration and determination of these metals in fish samples.
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Tu MC, Rajwar D, Ammanath G, Alagappan P, Yildiz UH, Liedberg B. Visual detection of Al(3+) ions using conjugated copolymer-ATP supramolecular complex. Anal Chim Acta 2015; 912:105-10. [PMID: 26920778 DOI: 10.1016/j.aca.2015.12.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 11/30/2015] [Accepted: 12/02/2015] [Indexed: 11/19/2022]
Abstract
A colorimetric Al(3+) sensor based on fluorescence recovery of a conjugated copolymer-ATP complex is proposed. An optimized ratio of two polythiophene (PT) monomers is utilized to synthesize copolymer (CP) that yielded maximized colorimetric response for Al(3+) in deionized (DI) and tap water. The electrostatic disassembly of CP-ATP upon addition of Al(3+) led to an evident visual color change. The lowest concentration of Al(3+) for naked eye observation is around 4 μM, which is below the threshold levels in drinking water according to European Economic Community (EEC) standard. Besides, the proposed assay showed a similar response to Al(3+) in tap water. The proposed methodology showed selective and sensitive detection for Al(3+) in analytically relevant concentration ranges without involving sophisticated instrumentation, illustrating the applicability for on-site drinking water monitoring.
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Affiliation(s)
- Meng-Che Tu
- Center for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Deepa Rajwar
- Center for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Gopal Ammanath
- Center for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore; Nanyang Institute of Technology in Health and Medicine, Interdisciplinary Graduate School, Nanyang Technological University, Singapore 637553, Singapore
| | - Palaniappan Alagappan
- Center for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Umit Hakan Yildiz
- Department of Chemistry, Izmir Institute of Technology, Izmir, Turkey; Stanford University School of Medicine, Palo Alto, CA 94304, United States.
| | - Bo Liedberg
- Center for Biomimetic Sensor Science, Nanyang Technological University, Singapore 637553, Singapore; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore; Nanyang Institute of Technology in Health and Medicine, Interdisciplinary Graduate School, Nanyang Technological University, Singapore 637553, Singapore.
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15
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Ahmad A, Siddique JA, Laskar MA, Kumar R, Mohd-Setapar SH, Khatoon A, Shiekh RA. New generation Amberlite XAD resin for the removal of metal ions: A review. J Environ Sci (China) 2015; 31:104-123. [PMID: 25968265 DOI: 10.1016/j.jes.2014.12.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 10/31/2014] [Accepted: 12/01/2014] [Indexed: 06/04/2023]
Abstract
The direct determination of toxic metal ions, in environmental samples, is difficult because of the latter's presence in trace concentration in association with complex matrices, thereby leading to insufficient sensitivity and selectivity of the methods used. The simultaneous removal of the matrix and preconcentration of the metal ions, through solid phase extraction, serves as the promising solution. The mechanism involved in solid phase extraction (SPE) depends on the nature of the sorbent and analyte. Thus, SPE is carried out by means of adsorption, ion exchange, chelation, ion pair formation, and so forth. As polymeric supports, the commercially available Amberlite resins have been found very promising for designing chelating matrices due to its good physical and chemical properties such as porosity, high surface area, durability and purity. This review presents an overview of the various works done on the modification of Amberlite XAD resins with the objective of making it an efficient sorbent. The methods of modifications which are generally based on simple impregnation, sorption as chelates and chemical bonding have been discussed. The reported results, including the preconcentration limit, the detection limit, sorption capacity, preconcentration factors etc., have been reproduced.
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Affiliation(s)
- Akil Ahmad
- Centre of Lipids Engineering & Applied Research (CLEAR), Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
| | - Jamal Akhter Siddique
- Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University, Prague, Thakurova-716629, Czech Republic
| | | | - Rajeev Kumar
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Siti Hamidah Mohd-Setapar
- Centre of Lipids Engineering & Applied Research (CLEAR), Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
| | - Asma Khatoon
- Centre of Lipids Engineering & Applied Research (CLEAR), Faculty of Chemical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Rayees Ahmad Shiekh
- Department of Chemistry, Faculty of Science, Taibah University, PO Box 30002, Al Madinah Al Munawarrah, Saudi Arabia
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A highly selective voltammetric sensor for nanomolar detection of mercury ions using a carbon ionic liquid paste electrode impregnated with novel ion imprinted polymeric nanobeads. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 48:205-12. [DOI: 10.1016/j.msec.2014.12.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/10/2014] [Accepted: 12/03/2014] [Indexed: 11/21/2022]
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17
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Najafi E, Aboufazeli F, Lotfi Zadeh Zhad HR, Sadeghi O, Amani V. A novel magnetic ion imprinted nano-polymer for selective separation and determination of low levels of mercury(II) ions in fish samples. Food Chem 2013; 141:4040-5. [DOI: 10.1016/j.foodchem.2013.06.118] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 02/28/2013] [Accepted: 06/26/2013] [Indexed: 10/26/2022]
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18
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Tuzen M, Unsal YE, Soylak M, Akkirman Z, Hazer B. Solid-phase extraction of lead and copper on a polyhydroxybutyrate-b-polydimethyl siloxane (PHB-b-PDMS) block copolymer disc and flame atomic absorption spectrometric determination of them in water and food samples. Int J Food Sci Technol 2013. [DOI: 10.1111/ijfs.12229] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Mustafa Tuzen
- Chemistry Department; Faculty of Science and Arts; Gaziosmanpasa University; Tokat; 60250; Turkey
| | - Yunus Emre Unsal
- Chemistry Department; Faculty of Science and Arts; Gaziosmanpasa University; Tokat; 60250; Turkey
| | - Mustafa Soylak
- Chemistry Department; Faculty of Science; Erciyes University; Kayseri; 38039; Turkey
| | - Zeynep Akkirman
- Department of Chemistry; Bulent Ecevit University; Zonguldak; 67100; Turkey
| | - Baki Hazer
- Department of Chemistry; Bulent Ecevit University; Zonguldak; 67100; Turkey
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Moniri E, Nezhati MN, Panahi HA, Kelahrodi SR, Manoochehri M, Azizi Z. Synthesis, Characterization and Applications of Amberlite XAD-4-Salicylcysteide for Adsorption and Kinetics Study of Aspartic Acid from Aqueous Solutions. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/s13369-012-0421-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yilmaz V, Kartal S. Determination of some trace metals by FAAS after solid-phase extraction with amberlite XAD-1180/TAN chelating resin. ANAL SCI 2013; 28:515-21. [PMID: 22687933 DOI: 10.2116/analsci.28.515] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A new chelating resin was synthesized by immobilizing 1-(2-thiazolylazo)-2-naphthol through the -N=N- group on Amberlite XAD-1180. The resin was used for the preconcentration of Cd(II), Co(II), Cu(II), Mn(II), Ni(II), and Pb(II) ions and their determination by flame atomic absorption spectrometry (FAAS). The influences of some analytical parameters, such as the pH, volume of the sample, flow rates of the sample and eluent, matrix components, amount of the resin, and amount and type of the eluent on the recovery, were investigated. Those metals retained on the resin at pH 8.5 were eluted with 25 mL of 2 mol L(-1) HNO(3). The sorption capacity of the resin was determined, except for Pb(II). The recoveries were found to be ≥95%, and the relative standard-deviation values were ≤4.3%. The detection limits were in the range of 0.1 - 3.6 µg L(-1). For the accuracy of the method, the analysis of a certified reference material was performed. This method was applied to environmental water samples.
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Affiliation(s)
- Vedat Yilmaz
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey.
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Vyas DJ, Makwana BA, Bhatt KD, Jain VK. Octa-<i>O</i>-Methoxy Resorcin [4] Arene Amberlite XAD-4 Polymeric Chelating Resin for Solid Phase Extraction, Preconcentration, Separation and Trace Determination of Ni(II), Cu(II), Zn(II) and Cd(II) Ions. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ajac.2013.45030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Sid Kalal H, Panahi HA, Hoveidi H, Taghiof M, Menderjani MT. Synthesis and application of Amberlite xad-4 functionalized with alizarin red-s for preconcentration and adsorption of rhodium (III). IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2012; 9:7. [PMID: 23369526 PMCID: PMC3561113 DOI: 10.1186/1735-2746-9-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 07/20/2012] [Indexed: 11/10/2022]
Abstract
A new chelating resin was prepared by coupling Amberlite XAD-4 with alizarin red-s through an azo spacer, characterized by infra-red spectroscopy and thermal analysis and studied for Rh(III) preconcentration using inductively coupled plasma atomic emission spectroscopy (ICP-AES) for rhodium monitoring in the environment. The optimum pH for sorption of the metal ion was 6.5. The sorption capacity was found 2.1 mg/g of resin for Rh(III). A recovery of 88% was obtained for the metal ion with 1.5 M HCl as eluting agent. Kinetic adsorption data were analyzed by adsorption and desorption times of Rh(III) on modified resin. Scat chard analysis revealed that the homogeneous binding sites were formed in the polymers. The linear regression equation was Q/C = -1.3169Q + 27.222 (R2 = 0.9239), for Rh were formed in the SPE sorbent,Kd and Qmax for the affinity binding sites were calculated to be 0.76 μmol/mL and 20.67 μmol/g, respectively. The equilibrium data and parameters of Rh(III) adsorption on modified resin were analyzed by Langmuir, Freundlich, Temkin and Redlich-Peterson models. The experimental adsorption isotherm was in good concordance with Langmuir and Freundlich models (R2 > 0.998) and based on the Langmuir isotherm the maximum amount of adsorption (qmax) was 4.842 mg/g. The method was applied for rhodium ions determination in environmental samples. with high recovery (>80%).
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Affiliation(s)
- Hossein Sid Kalal
- Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, Atomic Energy Organization of Iran, Tehran, Iran.
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Jiang Y, Zhang H, He Q, Hu Z, Chang X. Selective solid-phase extraction of trace mercury(II) using a silica gel modified with diethylenetriamine and thiourea. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0858-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Zhai Y, He Q, Han Q, Duan S. Solid-phase extraction of trace metal ions with magnetic nanoparticles modified with 2,6-diaminopyridine. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0857-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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High-selective removal of ultra-low level mercury ions from aqueous solution using oligothymonucleic acid functionalized polyethylene film. Sci China Chem 2012. [DOI: 10.1007/s11426-012-4572-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Vellaichamy S, Palanivelu K. Preconcentration and separation of copper, nickel and zinc in aqueous samples by flame atomic absorption spectrometry after column solid-phase extraction onto MWCNTs impregnated with D2EHPA-TOPO mixture. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:1131-1139. [PMID: 21041024 DOI: 10.1016/j.jhazmat.2010.10.023] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 09/09/2010] [Accepted: 10/07/2010] [Indexed: 05/30/2023]
Abstract
A solid phase extraction method has been developed for the determination of copper, nickel and zinc ions in natural water samples. This method is based on the adsorption of copper, nickel and zinc on multiwalled carbon nanotubes (MWCNTs) impregnated with di-(2-ethyl hexyl phosphoric acid) (D2EHPA) and tri-n-octyl phosphine oxide (TOPO). The influence of parameters such as pH of the aqueous solution, amount of adsorbent, flow rates of the sample and eluent, matrix effects and D2EHPA-TOPO concentration have been investigated. Desorption studies have been carried out with 2 mol L(-1) HNO(3). The copper, nickel and zinc concentrations were determined by flame atomic absorption spectrometry. The results indicated that the maximum adsorption of copper, nickel and zinc is at pH 5.0 with 500 mg of MWCNTs. The detection limits by three sigma were 50 μg L(-1) for copper, 40 μg L(-1) for nickel and 60 μg L(-1) zinc. The highest enrichment factors were found to be 25. The adsorption capacity of MWCNTs-D2EHPA-TOPO was found to be 4.90 mg g(-1) for copper, 4.78 mg g(-1) for nickel and 4.82 mg g(-1) for zinc. The developed method was applied for the determination of copper, nickel and zinc in electroplating wastewater and real water sample with satisfactory results (R.S.D.'s <10%).
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Affiliation(s)
- S Vellaichamy
- Centre for Environmental Studies, Anna University, Chennai 600 025, India
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27
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Synthesis of ion-imprinted mesoporous silica gel sorbent for selective adsorption of copper ions in aqueous media. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0414-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Synthesis, characterization and application of allyl phenol modified amberlite XAD-4 resin for preconcentration and determination of copper in water samples. KOREAN J CHEM ENG 2010. [DOI: 10.1007/s11814-010-0174-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Ghaedi M, Niknam K, Taheri K, Hossainian H, Soylak M. Flame atomic absorption spectrometric determination of copper, zinc and manganese after solid-phase extraction using 2,6-dichlorophenyl-3,3-bis(indolyl)methane loaded on Amberlite XAD-16. Food Chem Toxicol 2010; 48:891-7. [DOI: 10.1016/j.fct.2009.12.029] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Revised: 12/15/2009] [Accepted: 12/24/2009] [Indexed: 11/26/2022]
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30
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Panahi HA, Kalal HS, Moniri E, Nezhati MN, Menderjani MT, Kelahrodi SR, Mahmoudi F. Amberlite XAD-4 functionalized with m-phenylendiamine: Synthesis, characterization and applications as extractant for preconcentration and determination of rhodium (III) in water samples by Inductive Couple Plasma Atomic Emission Spectroscopy (ICP-AES). Microchem J 2009. [DOI: 10.1016/j.microc.2009.04.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Hashemi-Moghaddam H, Panahi HA, Nezhati MN. Synthesis and Application of New Resin Functionalized by Brilliant Green for Spectrophotometric Determination of Mercury in Environmental Samples. ANAL LETT 2009. [DOI: 10.1080/00032710903060735] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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FeizBakhsh AR, Panahi HA, Nezhati MN, Amrollahi M, Mahmoudi F. Synthesis, characterization, and application of m-phenylendiamine-modified Amberlite XAD-4 resin for preconcentration and determination of metal ions in water samples. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2009; 81:532-539. [PMID: 19472945 DOI: 10.2175/106143008x370359] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A new chelating resin is prepared by coupling Amberlite XAD-4 (Serva, Heidelberg, New York) with m-phenylendiamine through an azo spacer, characterized (by elemental analysis, infrared, and thermogravimetric analysis) and studied for preconcentrating nickel(II), cobalt(II), zinc(II), copper(II), and chromium(III) using flame atomic absorption spectrometry for metal monitoring. The optimum pH values for sorption of the above-mentioned metal ions were 8.5, 8.5, 6.5, 6.5, and 5.5, respectively. The resin was subjected to evaluation through batch binding and column chromatography of the mentioned metal ions. Quantitative desorption occurred instantaneously with 0.5 M HNO3. Various flowrates of sorption and desorption of nickel(II) have been studied. The sorption capacity was found to be 3.89, 3.27, 2.96, and 3.44 mmol/g of resin for cobalt, copper, zinc, and nickel, respectively. The chelating resin can be reused for 10 cycles of sorption-desorption without any significant change in sorption capacity. A recovery of >98% was obtained for all the metal ions, with 0.5 M HNO3 as the eluting agent. The method was applied for determination of metal ions from an industrial wastewater sample.
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Affiliation(s)
- Ali Reza FeizBakhsh
- Department of Chemistry, Islamic Azad University, central Tehran Branch, Iran
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33
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Ince M, Kaplan O, Yaman M. Solid-phase extraction and preconcentration of copper in mineral waters with 4-(2-pyridyl-azo) resorcinol-loaded amberlite XAD-7 and flame atomic absorption spectrometry. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2008; 80:2104-2110. [PMID: 19024725 DOI: 10.2175/106143008x266805] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A simple, sensitive, accurate, and selective method for determination of ultratrace levels of copper is modified. The method is based on preconcentration of copper on the 4-(2-pyridyl-azo) resorcinol-loaded amberlite XAD-7 (non-ionic copoly[styrene-acrylic compound]) at pH 5.0 to 6.5 for contact time as low as 45 minutes. The adsorbed copper was eluted with concentrated nitric acid and measured by flame atomic absorption spectrometry. Recoveries of up to 90% were achieved. The optimized preconcentration method was applied to copper determination in various water samples. The detection limit was found to be 0.09 ng mL(-1). The relative standard deviation was found to be 9% using 300 mL of 5.0 ng mL(-1) for 10 replicate preconcentration procedures. Copper concentrations in the studied water samples were found to be in the ranges of 0.4 to 18.0 ng mL(-1).
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Affiliation(s)
- Muharrem Ince
- Science and Art Faculty, Department of Chemistry, Firat University, Elazig, Turkey
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34
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Ion-imprinted thiol-functionalized silica gel sorbent for selective separation of mercury ions. Mikrochim Acta 2008. [DOI: 10.1007/s00604-008-0113-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Wongkaew M, Imyim A, Eamchan P. Extraction of heavy metal ions from leachate of cement-based stabilized waste using purpurin functionalized resin. JOURNAL OF HAZARDOUS MATERIALS 2008; 154:739-47. [PMID: 18055108 DOI: 10.1016/j.jhazmat.2007.10.091] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2007] [Revised: 10/18/2007] [Accepted: 10/19/2007] [Indexed: 05/25/2023]
Abstract
A new chelating resin was synthesized by functionalization of a polymer support, Amberlite XAD-2 with purpurin through an azo linkage (NN). The products were characterized by scanning electron microscopy, elemental analysis, Fourier transform infrared spectroscopy and thermogravimetric analysis. The optimum conditions for the extraction of Cd(II), Cr(III) and Pb(II) in two matrices; leachate from cement-based material and de-ionized water, were studied by batch and column methods. The determination of the metal ions was carried out by flame atomic absorption spectrometry. The optimum pH for the extraction of all metal ions in both matrices were at 4.0. Their sorption equilibrium was reached within 1h. The sorbed Cd(II) and Pb(II) were eluted by 1% HNO3 within 10 min with the desorption recovery of >90%. The elution of Cr(III) by 3% H2O2 in 0.1 M NaOH was achieved within 30 min with the desorption recovery of >80%. The sorption capacity of Cd(II), Cr(III) and Pb(II) onto the resin was 75.0, 68.2, 82.7 micromol g(-1) resin in DI water and 54.1, 46.5 and 55.7 micromol g(-1) resin in leachate, respectively. The extraction efficiency in the column method can be improved using the recirculation system. This new method gave a good accuracy in batch system with the recovery of 86.5 and 89.9% for Cd(II) and Pb(II) and R.S.D. less than 2.3% (n=14).
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Affiliation(s)
- Marisa Wongkaew
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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36
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Hosseini MS, Hosseini M, Bandeh‐Gharaei AH. Solvent Impregnated Resins containing Quinizarin: Preparation and Application to Batch‐mode Separation of Cd(II), Cu(II), Ni(II), and Zn(II) in Aqueous Media Prior to the Determination by Flame Atomic Absorption Spectrometry. SEP SCI TECHNOL 2007. [DOI: 10.1080/01496390701626552] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Kartal Ş, Özdemir İ, Tokalıoğlu Ş, Yılmaz V. Determination of Cd(II), Co(II), Cu(II), Ni(II), and Pb(II) Ions by FAAS after Separation/Preconcentration using Amberlite XAD‐1180 Chelating Resin Chemically Modified with o‐Aminophenol. SEP SCI TECHNOL 2007. [DOI: 10.1080/01496390701513057] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Meesri S, Praphairaksit N, Imyim A. Extraction and preconcentration of toxic metal ions from aqueous solution using benzothiazole-based chelating resins. Microchem J 2007. [DOI: 10.1016/j.microc.2007.05.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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39
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Polymer supported 5,10,15,20-tetrakis(phenoxy acetic acid)porphyrin derivative for separation and preconcentration of d- and f-electron metals. Mikrochim Acta 2007. [DOI: 10.1007/s00604-007-0797-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Wu G, Wang Z, Wang J, He C. Hierarchically imprinted organic–inorganic hybrid sorbent for selective separation of mercury ion from aqueous solution. Anal Chim Acta 2007; 582:304-10. [PMID: 17386507 DOI: 10.1016/j.aca.2006.09.034] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2006] [Revised: 09/16/2006] [Accepted: 09/18/2006] [Indexed: 11/29/2022]
Abstract
A new type of hierarchically organic-inorganic hybrid sorbent was prepared by a double-imprinting approach for the selective separation of Hg(II) from aqueous solution. In the imprinting process, both mercury ions and surfactant micelles (cetyltrimethylammonium bromide, CTAB) were used as templates, N-[3-(trimethoxy-silyl)propyl]ethylenediamine (TPED) as functional monomer, and tetraethoxysilane (TEOS) as cross-linking agent. The mercury ions and surfactant were removed from sorbent via acid leaching and ethanol extraction, respectively. The adsorption property and selective recognition ability of the sorbents were studied by equilibrium-adsorption method. Results showed that in the presence of Cu(II) or Cd(II) the biggest selectivity coefficient of the imprinted sorbents for Hg(II) was over 100, which is much higher than those of non-imprinted sorbents. The largest relative selectivity coefficient (k') of the ion-imprinted functionalized sorbent between Hg(II) and Cu(II) was over 300, and between Hg(II) and Cd(II) over 200. The uptake capacities and the selectivity coefficients of the hierarchically imprinted sorbent were much higher than those of the sorbent prepared without CTAB template. Furthermore, the new imprinted sorbent possessed a fast kinetics for the removal of Hg(II) from aqueous solution with the saturation time less than 5 min, and could be used repeatedly. This sorbent has been successfully applied to the separation and determination of the trace Hg(II) in real water samples and those spiked with standards. This new sorbent can be used as an effective solid-phase extraction material for the selective preconcentration and separation of Hg(II) in environmental samples.
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Affiliation(s)
- Genhua Wu
- Department of Chemistry, Anqing Normal College, Anqing 246011, PR China
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41
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Online separation and preconcentration of trace heavy metals with 2,6-dihydroxyphenyl-diazoaminoazobenzene impregnated amberlite XAD-4. Mikrochim Acta 2006. [DOI: 10.1007/s00604-006-0690-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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42
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Hosseini MS, Raissi H, Madarshahian S. Synthesis and application of a new chelating resin functionalized with 2,3-dihydroxy benzoic acid for Fe(III) determination in water samples by flame atomic absorption spectrometry. REACT FUNCT POLYM 2006. [DOI: 10.1016/j.reactfunctpolym.2006.05.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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43
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Preconcentration of Iron(III), Lead(II), Cobalt(II) and Chromium(III) on Amberlite XAD-1180 Resin Loaded with 4-(2-Pyridylazo)-resorcinol (PAR) and Their Determination by FAAS. B KOREAN CHEM SOC 2006. [DOI: 10.5012/bkcs.2006.27.9.1293] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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Liu Y, Guo Y, Meng S, Feng F, Chang X. Determination of trace heavy metals in waters by flame atomic absorption spectrometry after preconcentration with 2,4-dinitrophenyldiazoaminoazobenzene on Amberlite XAD-2. Mikrochim Acta 2006. [DOI: 10.1007/s00604-006-0647-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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45
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Lemos VA, Gama EM, da Silva Lima A. On-Line Preconcentration and Determination of Cadmium, Cobalt and Nickel in Food Samples by Flame Atomic Absorption Spectrometry Using a New Functionalized Resin. Mikrochim Acta 2006. [DOI: 10.1007/s00604-005-0463-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Kara D, Fisher A, Hill SJ. Comparison of some newly synthesized chemically modified Amberlite XAD-4 resins for the preconcentration and determination of trace elements by flow injection inductively coupled plasma-mass spectrometry (ICP-MS). Analyst 2006; 131:1232-40. [PMID: 17066192 DOI: 10.1039/b607300j] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
XAD copolymer resins may be functionalized with heavy metal ion-selective ligands either by covalent linkage to the polymer backbone or by impregnation. These resins may be tailored to be specific for certain heavy metals by adjusting the retention and elution parameters. For the synthesis of immobilized Amberlite XAD-4 copolymer resins that are expected to preconcentrate a number of transition and heavy metals, the Schiff base method was chosen. For this purpose the copolymer was nitrated, reduced to the corresponding amine and converted to the imine compounds via a Schiff base reaction using different organic aldehyde compounds. The interactions of 8 elements (Cd, Co, Cu, Mn, Ni, Pb, U and Zn) with the resins were qualitatively investigated. Optimal pH for retention was typically 6-8 for most resins although one could be used at pH 5 and elution was achieved using 0.1 M HNO3. The resins were characterized by FTIR, SEM and elemental analysis. It was demonstrated that the resins could be used to preconcentrate ultra-trace analytes from natural waters, and analysis of environmental certified reference materials using FI-ICP-MS showed good agreement with the certified values. Metal retention capacities were also calculated using a batch system and were found to compare favorably with other resins reported in the literature.
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Affiliation(s)
- Derya Kara
- Department of Chemistry, Art and Science Faculty, Balikesir University, 10100 Balikesir, Turkey
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47
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Chen SY, Chang CN, Li CL, Tsai SJJ. Binary modifiers for the determination of zinc in pure copper and nickel-based alloy by longitudinal Zeeman electrothermal atomic absorption spectrometry. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.06.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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48
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Liu Y, Chang X, Guo Y, Ding B, Meng S. Solid Phase Extraction and Preconcentration of Trace Heavy Metal Ions in Natural Water with 2,2′‐Dithiobisaniline Modified Amberlite XAD‐2. SOLVENT EXTRACTION AND ION EXCHANGE 2005. [DOI: 10.1080/07366290500174891] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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49
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Bakircioglu Y, Bakircioglu D, Tokman N. A novel preconcentration method for determination of iron and lead using Chromosorb-103 and flame atomic absorption spectrometry. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.01.056] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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50
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Liu Y, Chang X, Yang D, Guo Y, Meng S. Highly selective determination of inorganic mercury(II) after preconcentration with Hg(II)-imprinted diazoaminobenzene–vinylpyridine copolymers. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.02.017] [Citation(s) in RCA: 123] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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