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Carrara CG, de Carvalho DT, Rosa MA, Gorup LF, de Freitas Marques MB, Figueiredo EC. A magnetic poly (methacrylic acid-co-ethylene glycol dimethacrylate) copolymer for extraction of anticonvulsants from saliva followed by high performance liquid chromatography analysis. J Chromatogr B Analyt Technol Biomed Life Sci 2025; 1261:124635. [PMID: 40381413 DOI: 10.1016/j.jchromb.2025.124635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2025] [Revised: 04/24/2025] [Accepted: 05/04/2025] [Indexed: 05/20/2025]
Abstract
Neurological diseases like epilepsy are commonly treated with anticonvulsants, and the dosage control of these medications has been carried out with therapeutic biomonitoring, mainly in blood. Saliva is a less invasive sample, and its drug concentration is proportional to the blood fraction concentration not bound to the proteins, making it an important alternative to blood. Therefore, this study describes the synthesis of a magnetic poly (methacrylic acid-co-ethylene glycol dimethacrylate) copolymer (M-CP) and its use in magnetic dispersive solid phase extraction of primidone (PMR), phenobarbital (PB), phenytoin (PHT), and carbamazepine (CB) from saliva, followed by their determination by high performance liquid-chromatography. M-CP was synthesized in 4 steps and the material was characterized by infrared spectroscopy, scanning electron microscopy, zeta potential, and thermal analysis. The sample preparation protocol was optimized by central composite rotatable design and the optimal conditions were obtained for pH 5.78, 12.8 mg of M-CP, and 2.18 mL of diluted saliva. In the adsorption studies, the Avrami and Jovanovic models demonstrated the best fit for describing the adsorption kinetics and isotherm, respectively. The equilibrium time was reached in 60 min, and 10.96 mg g-1 was the maximum adsorption capacity. The developed method was linear (R2 > 0.99) in the range of 2 to 30 mg L-1 for PMR and PB, 1 to 20 mg L-1 for PHT, and 1 to 30 mg L-1 for CBZ. Precisions were obtained in the range of 1.35 to 19.44 %, and accuracy from -14.92 % to 18.83 %. The limits of detection ranged from 0.48 to 1.30 mg L-1, while the limits of quantification were lower than the therapeutic levels of each drug, being suitable for the method application. The developed method is simple, fast, and requires few amounts of saliva, sorbent, and solvents, being a good alternative for the therapeutic biomonitoring of anticonvulsants in saliva samples.
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Affiliation(s)
- Camila Gabriela Carrara
- Laboratory of Toxicant and Drug Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas, 37130-000. Alfenas, MG, Brazil
| | - Diailison Teixeira de Carvalho
- Laboratory of Toxicant and Drug Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas, 37130-000. Alfenas, MG, Brazil
| | - Mariana Azevedo Rosa
- Laboratory of Toxicant and Drug Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas, 37130-000. Alfenas, MG, Brazil
| | - Luiz Fernando Gorup
- Institute of Chemistry, Federal University of Alfenas, 37130-001 Alfenas, MG, Brazil; Department of Chemistry, Interdisciplinary Laboratory of Electrochemistry and Ceramics (LIEC), Federal University of São Carlos, São Carlos, SP 13565-905, Brazil; School of Chemistry and Food Science, Federal University of Rio Grande, Rio Grande, RS 96203-900, Brazil; Department of Chemistry, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | | | - Eduardo Costa Figueiredo
- Laboratory of Toxicant and Drug Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas, 37130-000. Alfenas, MG, Brazil.
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2
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Dos Santos PM, Zanetti Corazza M, Ricardo Teixeira Tarley C. Synthesis of ionically imprinted Poly(Alylthiourea) in the presence of 1-(2-Pyridylazo)-2-Napthol (PAN) for preconcentration in magnetic dispersive solid phase of nickel ions in water and food samples. Food Chem 2024; 440:138238. [PMID: 38142556 DOI: 10.1016/j.foodchem.2023.138238] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 12/04/2023] [Accepted: 12/18/2023] [Indexed: 12/26/2023]
Abstract
In the present study, a magnetic ion-imprinted polymer based on n-allylthiourea in the presence of 1-(2-pyridylazo)-2-naphthol (MIIP-PAN) was synthesized, characterized, and applied in the preconcentration of nickel ions by dispersive magnetic solid phase extraction (DMSPE) with FAAS detection. For comparison, non-imprinted polymer (MNIP-PAN) and imprinted polymer without PAN were synthesized. The characterization of the polymers was performed by FT-IR, DRX, TEM, TGA, VSM, and BET. Selectivity studies were performed comparing the competitive adsorption of Ni2+ with other cations on MIIP-PAN and MNIP-PAN, achieving higher relative selectivity coefficients for MIIP-PAN than for MNIP-PAN and NIP. Under optimized conditions, the method provided a preconcentration factor of 76.70, detection limit of 0.25 µg/L and intra-day (2.06 - 2.33 %) and inter-day (1.82 - 4.90 %) precision. The developed method was applied to samples of water, teas, and chocolate powder, and its precision was evaluated through tests of recovery and analysis of certified materials.
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Affiliation(s)
- Paula Mantovani Dos Santos
- Departamento de Química, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445 Km 380, Campus Universitário, Londrina-PR, CEP 86051-990, Brazil
| | - Marcela Zanetti Corazza
- Departamento de Química, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445 Km 380, Campus Universitário, Londrina-PR, CEP 86051-990, Brazil.
| | - César Ricardo Teixeira Tarley
- Departamento de Química, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445 Km 380, Campus Universitário, Londrina-PR, CEP 86051-990, Brazil; Instituto Nacional de Ciência e Tecnologia (INCT) de Bioanalítica, Universidade Estadual de Campinas (UNICAMP), Instituto de Química, Departamento de Química Analítica, Cidade Universitária Zeferino Vaz s/n, CEP 13083-970, Campinas SP, Brazil
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3
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Morales-Benítez I, Montoro-Leal P, García-Mesa JC, López Guerrero MM, Vereda Alonso E. New magnetic chelating sorbent for chromium speciation by magnetic solid phase extraction on-line with inductively coupled plasma optical emission spectrometry. Talanta 2023; 256:124262. [PMID: 36701855 DOI: 10.1016/j.talanta.2023.124262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/05/2023] [Accepted: 01/07/2023] [Indexed: 01/20/2023]
Abstract
A novel sorbent material employing magnetic nanoparticles (MNPs) coupled to graphene oxide (GO) functionalized with 4-aminobenzenesulfonic acid (M@GO-ABS) has been synthesized and applied to develop an inexpensive and automatic method for Cr(III) and Cr(VI) speciation in environmental samples; the developed method combines inductively coupled plasma optical emission spectrometry (ICP-OES) with on-line magnetic solid phase extraction (MSPE). Two magnetic-knotted reactors containing M@GO-ABS were installed in the eight-port injection valve of a flow injection (FI) manifold. Two different eluents were used, one for Cr(VI) (the most toxic chromium species) and one for total Cr concentration. Cr(III) concentration was calculated by the difference between Cr(VI) concentration and total Cr concentration. The optimized method presented detection limits (LOD, peak height) of 0.1 μg L-1 for chromium (VI) and 0.08 μg L-1 for total chromium, and enrichment factors of 15 and 23, respectively. Certified reference materials (TMDA 54.5 fortified lake water and SPS-SW2 surface water) and spiked aqueous samples were used to validate the developed method. The developed method was fruitfully applied to chromium speciation in environmental water samples such as seawater, well water and tap water collected in Málaga (Spain). The obtained values were in good agreement with the certified values, and the recoveries were found in the range of 91-108% for the spiked samples.
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Affiliation(s)
- I Morales-Benítez
- Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Campus de Teatinos, 29071, Málaga, Spain
| | - P Montoro-Leal
- Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Campus de Teatinos, 29071, Málaga, Spain
| | - J C García-Mesa
- Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Campus de Teatinos, 29071, Málaga, Spain
| | - M M López Guerrero
- Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Campus de Teatinos, 29071, Málaga, Spain.
| | - E Vereda Alonso
- Department of Analytical Chemistry, Faculty of Sciences, University of Málaga, Campus de Teatinos, 29071, Málaga, Spain.
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4
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Tiwari S, Lochab A, Jindal K, Saxena R. Determination of Chromium in Contaminated Water Samples Using Chemically Modified Nanoadsorbent: A Computational and Experimental Study. ChemistrySelect 2023. [DOI: 10.1002/slct.202203316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- Shelja Tiwari
- Department of Chemistry Kirori Mal College University of Delhi Delhi 110007 India
| | - Amit Lochab
- Department of Chemistry Kirori Mal College University of Delhi Delhi 110007 India
| | - Kajal Jindal
- Department of Physics Kirori Mal College University of Delhi Delhi 110007 India
| | - Reena Saxena
- Department of Chemistry Kirori Mal College University of Delhi Delhi 110007 India
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5
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Moreira BM, Cunha JND, Paiva VM, Honório GG, Tarley RT, D’Elia E. Determination of Free Glycerol in Biodiesel by Molecularly Imprinted Polymer – Based Solid-Phase Extraction (SPE) Using an Enzymatic Spectrophotometric Assay. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1821040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Brayan Machado Moreira
- Institute of Chemistry, Federal University of Rio de Janeiro, University City, Rio de Janeiro, Brazil
| | - Jéssica Nogueira da Cunha
- Institute of Chemistry, Federal University of Rio de Janeiro, University City, Rio de Janeiro, Brazil
| | - Victor Magno Paiva
- Institute of Chemistry, Federal University of Rio de Janeiro, University City, Rio de Janeiro, Brazil
| | - Gláucio Gualtieri Honório
- Institute of Chemistry, Federal University of Rio de Janeiro, University City, Rio de Janeiro, Brazil
| | - Ricardo Teixeira Tarley
- Institute of Chemistry, State University of Londrina, University City, Londrina, Brazil
- Institute of Chemistry, State University of Campinas, University City, São Paulo, Brazil
| | - Eliane D’Elia
- Institute of Chemistry, Federal University of Rio de Janeiro, University City, Rio de Janeiro, Brazil
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6
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Sharma N, Tiwari S, Saxena R. Comparative Insight into the Performance of Two Different Amine‐Functionalized CNTs for the Chemical Speciation of Chromium. ChemistrySelect 2020. [DOI: 10.1002/slct.202001338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Niharika Sharma
- Department of ChemistryKirori Mal College University of Delhi Delhi 110007 India
| | - Shelja Tiwari
- Department of ChemistryKirori Mal College University of Delhi Delhi 110007 India
| | - Reena Saxena
- Department of ChemistryKirori Mal College University of Delhi Delhi 110007 India
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Polystyrene-divinyl benzene microspheres with amino methyl phosphonic acid functional hairy brushes for the sorption and speciation of chromium prior to inductively coupled plasma mass spectrometric determination. Mikrochim Acta 2019; 186:571. [PMID: 31342177 DOI: 10.1007/s00604-019-3635-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 06/24/2019] [Indexed: 10/26/2022]
Abstract
This article describes the synthesis and application of a novel sorbent for Cr(III) and Cr(VI) speciation prior to their quantitation by inductively coupled plasma mass spectrometry. The sorbent consists of polystyrene-divinyl benzene microbeads that were graft-coated with poly(oligo (ethylene glycol) methacrylate)-block-poly(glycidyl methacrylate). The particles were finally modified with phosphomethylated triethylene tetramine. The resulting microbeads are shown to be a viable sorbent for Cr(VI). The total concentration of chromium was determined after oxidation of Cr(III) to Cr(VI) with KMnO4 using the novel sorbent. The Cr(III) amount was then calculated by subtracting the concentration of Cr(VI) from that of total chromium. The optimum conditions for batch type sorption were established. Under optimal conditions, the limit of detection and quantification are 0.015 μg L-1 and 0.050 μg L-1, respectively. The kinetics and isotherms of the sorption of Cr(VI) were investigated. Following desorption with 0.1 M hydroxylamine hydrochloride, the method was successfully applied to spiked real water samples and a certified reference material. Graphical abstract Schematic presentation of a method for the sorption and speciation of chromium using amino methyl phosphonic acid functional brushes on polystyrene-divinyl benzene microspheres.
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8
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Tonucci MC, Fidélis ALS, Baeta BEL, Tarley CRT, de Aquino SF. Influence of synthesis conditions on the production of molecularly imprinted polymers for the selective recovery of isovaleric acid from anaerobic effluents. POLYM INT 2018. [DOI: 10.1002/pi.5726] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marina C Tonucci
- Laboratório de Química Tecnológica e Ambiental (UFOP); Campus Universitário Morro do Cruzeiro; Ouro Preto MG Brazil
| | - Ana Luíza S Fidélis
- Laboratório de Química Tecnológica e Ambiental (UFOP); Campus Universitário Morro do Cruzeiro; Ouro Preto MG Brazil
| | - Bruno Eduardo L Baeta
- Laboratório de Química Tecnológica e Ambiental (UFOP); Campus Universitário Morro do Cruzeiro; Ouro Preto MG Brazil
| | - César Ricardo T Tarley
- Departamento de Química; Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid; Londrina PR Brazil
- Instituto Nacional de Ciência e Tecnologia em Bioanalítica (INCTBio), Universidade Estadual de Campinas (UNICAMP), Instituto de Química, Departamento de Química Analítica; Cidade Universitária Zeferino Vaz Campus; Campinas SP Brazil
| | - Sérgio F de Aquino
- Laboratório de Química Tecnológica e Ambiental (UFOP); Campus Universitário Morro do Cruzeiro; Ouro Preto MG Brazil
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9
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Zhu QY, Zhao LY, Sheng D, Chen YJ, Hu X, Lian HZ, Mao L, Cui XB. Speciation analysis of chromium by carboxylic group functionalized mesoporous silica with inductively coupled plasma mass spectrometry. Talanta 2018; 195:173-180. [PMID: 30625529 DOI: 10.1016/j.talanta.2018.11.043] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 11/07/2018] [Accepted: 11/13/2018] [Indexed: 01/01/2023]
Abstract
Carboxyl-group functionalized mesoporous silica (CFMS) prepared by one-pot co-condensation method was employed for the solid phase extraction (SPE) of chromium species for the first time. A new approach of SPE coupled to inductively coupled plasma mass spectrometry (ICP-MS) was thus established for the speciation of chromium in environmental water samples. The influences of pH, volume of sample, extraction time, amount of adsorbent, elution conditions, co-existing ions and adsorption capacity were investigated on adsorption or elution of chromium species. Cr(VI) was not retained on the CFMS material in the pH range of 1.0-9.0, while Cr(III) was quantitatively adsorbed at pH 5.0-9.0. The captured Cr(III) was enriched by using 1.5 mol L-1 HNO3 as elution solvent and detected by ICP-MS. Under the optimized SPE conditions, the maximum adsorption capacity of the CFMS for Cr(III) was 57.67 mg g-1 and the enrichment factor was 25, with the detection limit (LOD) of 0.02 μg L-1. The proposed protocol has been successfully applied to chromium speciation in rain, lake and river water samples, which exhibited a prospect in field separation and enrichment of chromium species in environmental waters.
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Affiliation(s)
- Qing-Yun Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210023, China
| | - Ling-Yu Zhao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210023, China
| | - Dong Sheng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210023, China
| | - Yi-Jun Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210023, China
| | - Xin Hu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210023, China
| | - Hong-Zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing 210023, China.
| | - Li Mao
- Ministry of Education (MOE) Key Laboratory of Modern Toxicology, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Xiao-Bing Cui
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
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10
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Extraction and preconcentration of trace Al and Cr from vegetable samples by vortex-assisted ionic liquid-based dispersive liquid–liquid microextraction prior to atomic absorption spectrometric determination. Food Chem 2018; 245:586-594. [DOI: 10.1016/j.foodchem.2017.10.134] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 10/23/2017] [Accepted: 10/25/2017] [Indexed: 11/18/2022]
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11
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Preparation and application of nanocomposite based on imprinted poly(methacrylic acid)-PAN/MWCNT as a new electrochemical selective sensing platform of Pb2+ in water samples. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.07.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Avelar Dutra FV, Pires BC, Nascimento TA, Mano V, Borges KB. Polyaniline-deposited cellulose fiber composite prepared via in situ polymerization: enhancing adsorption properties for removal of meloxicam from aqueous media. RSC Adv 2017. [DOI: 10.1039/c6ra27019k] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polyaniline (PAni), cellulose fiber (CF) and a PAni–CF composite, which were characterized by infrared spectroscopy, scanning electron microscopy and thermogravimetry, were investigated in adsorption studies of meloxicam (MLX) from aqueous media.
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Affiliation(s)
| | - Bruna Carneiro Pires
- Departamento de Ciências Naturais
- Universidade Federal de São João del-Rei
- São João del-Rei
- Brazil
| | | | - Valdir Mano
- Departamento de Ciências Naturais
- Universidade Federal de São João del-Rei
- São João del-Rei
- Brazil
| | - Keyller Bastos Borges
- Departamento de Ciências Naturais
- Universidade Federal de São João del-Rei
- São João del-Rei
- Brazil
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13
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Wei W, Zhao B, He M, Chen B, Hu B. Iminodiacetic acid functionalized magnetic nanoparticles for speciation of Cr(iii) and Cr(vi) followed by graphite furnace atomic absorption spectrometry detection. RSC Adv 2017. [DOI: 10.1039/c6ra27544c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, iminodiacetic acid (IDA) functionalized magnetic nanoparticles (Fe3O4@SiO2@IDA) were prepared and the adsorption behavior of Cr(iii)/(vi) on them was investigated.
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Affiliation(s)
- Wenye Wei
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- Department of Chemistry
- Wuhan University
- Wuhan 430072
| | - Bingshan Zhao
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- Department of Chemistry
- Wuhan University
- Wuhan 430072
| | - Man He
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- Department of Chemistry
- Wuhan University
- Wuhan 430072
| | - Beibei Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- Department of Chemistry
- Wuhan University
- Wuhan 430072
| | - Bin Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine
- Ministry of Education
- Department of Chemistry
- Wuhan University
- Wuhan 430072
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14
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Cajamarca FAS, Corazza MZ, Prete MC, Dragunski DC, Rocker C, Caetano J, Gonçalves Júnior AC, Tarley CRT. Investigation on the Performance of Chemically Modified Aquatic Macrophytes-Salvinia molesta for the Micro-Solid Phase Preconcentration of Cd(II) On-Line Coupled to FAAS. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 97:863-869. [PMID: 27663446 DOI: 10.1007/s00128-016-1923-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 09/13/2016] [Indexed: 06/06/2023]
Abstract
In this study, a new method for the preconcentration of cadmium ions using modified aquatic macrophytes - Salvinia molesta as biosorbent in an on-line preconcentration system coupled to flame atomic absorption spectrometry (FAAS) was developed. The method is based on preconcentration of 20.0 mL sample at pH 3.75 through 35.0 mg of biosorbent at 10.0 mL min-1 and subsequent elution with 0.5 mol L-1 HNO3. A preconcentration factor of 31-fold, linear dynamic range from 5.0 to 70.0 µg L-1 (r = 0.9996) and detection and quantification limits of 0.15 and 0.51 µg L-1 were obtained. The characterization of the biosorbent chemically modified with NaOH and citric acid, was performed through FTIR and SEM measurements. The method precision was found to be 3.97 % and 1.48 % for 5.0 and 60.0 µg L-1 Cd(II) solutions, respectively. The applicability of method was checked by analysis of different kind of water samples and certified reference material.
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Affiliation(s)
- Fabio Antonio Suquila Cajamarca
- Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Londrina, PR, 86050-482, Brazil
| | - Marcela Zanetti Corazza
- Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Londrina, PR, 86050-482, Brazil
- Faculdade de Ciências Exatas e Tecnologia, FACET, Universidade Federal da Grande Dourados (UFGD), CEP 79804-970, Dourados, MS, Brazil
| | - Maiyara Caroline Prete
- Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Londrina, PR, 86050-482, Brazil
| | - Douglas Cardoso Dragunski
- Centro de Engenharias e Ciências Exatas, Universidade Estadual do Oeste do Paraná (UNIOESTE), Toledo, PR, 85903-000, Brazil
| | - Cristiana Rocker
- Centro de Engenharias e Ciências Exatas, Universidade Estadual do Oeste do Paraná (UNIOESTE), Toledo, PR, 85903-000, Brazil
| | - Josiane Caetano
- Centro de Engenharias e Ciências Exatas, Universidade Estadual do Oeste do Paraná (UNIOESTE), Toledo, PR, 85903-000, Brazil
| | - Affonso Celso Gonçalves Júnior
- Centro de Ciências Agrárias, Universidade Estadual do Oeste do Paraná (UNIOESTE), Marechal Cândido Rondon, PR, 85960-000, Brazil
| | - César Ricardo Teixeira Tarley
- Departamento de Química, Centro de Ciências Exatas, Universidade Estadual de Londrina (UEL), Rodovia Celso Garcia Cid, PR 445, Km 380, Londrina, PR, 86050-482, Brazil.
- Departamento de Química Analítica, Instituto Nacional de Ciência e Tecnologia (INCT) de Bioanalítica, Universidade Estadual de Campinas (UNICAMP), Instituto de Química, Cidade Universitária Zeferino Vaz, s/n, Campinas, SP, 13083-970, Brazil.
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15
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Development and Application of Electrochemical Sensor Based on Molecularly Imprinted Polymer and Carbon Nanotubes for the Determination of Carvedilol. CHEMOSENSORS 2016. [DOI: 10.3390/chemosensors4040022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Wong A, de Oliveira FM, Tarley CRT, Del Pilar Taboada Sotomayor M. Study on the cross-linked molecularly imprinted poly(methacrylic acid) and poly(acrylic acid) towards selective adsorption of diuron. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.01.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Hybrid molecularly imprinted poly(methacrylic acid-TRIM)-silica chemically modified with (3-glycidyloxypropyl)trimethoxysilane for the extraction of folic acid in aqueous medium. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 59:643-651. [DOI: 10.1016/j.msec.2015.10.061] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 09/26/2015] [Accepted: 10/20/2015] [Indexed: 11/19/2022]
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18
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TÜRKER AR. Speciation of trace metals and metalloids by solid phase extraction with spectrometric detection: a critical review. Turk J Chem 2016. [DOI: 10.3906/kim-1603-134] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Diniz KM, Tarley CRT. Speciation analysis of chromium in water samples through sequential combination of dispersive magnetic solid phase extraction using mesoporous amino-functionalized Fe3O4/SiO2 nanoparticles and cloud point extraction. Microchem J 2015. [DOI: 10.1016/j.microc.2015.06.011] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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A graphene oxide decorated with triethylenetetramine-modified magnetite for separation of chromium species prior to their sequential speciation and determination via FAAS. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1641-2] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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22
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Synthesis and evaluation of different adsorbents based on poly(methacrylic acid–trimethylolpropane trimethacrylate) and poly(vinylimidazole–trimethylolpropane trimethacrylate) for the adsorption of tebuthiuron from aqueous medium. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.05.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Giakisikli G, Zachariadis P, Kila I, Teshima N, Anthemidis A. Flow Injection Solid Phase Extraction for Trace Metal Determination Using a Chelating Resin and Flame Atomic Absorption Spectrometry Detection. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1038547] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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