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Rezaei N, Seidi S, Fotouhi M. On-chip electromembrane extraction using deep eutectic solvent and red-green-blue analysis by quick-response code readable customized application on a smartphone for measuring salicylic acid in pharmaceutical and plasma samples. J Chromatogr A 2023; 1708:464347. [PMID: 37696125 DOI: 10.1016/j.chroma.2023.464347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/19/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023]
Abstract
The current work presents an on-chip electromembrane extraction (OC-EME) method using deep eutectic solvent followed by QR code-based red-green-blue (RGB) analysis for measuring salicylic acid (SA) in plasma and pharmaceutical samples. The RGB analysis was performed based on forming the SA-Fe3+ complex in the acceptor phase giving a purple solution. The QR code readable customized app provided rapid, easy, and cost-less qualification and quantification of SA with the aid of principal component analysis (PCA). Parameters affecting OC-EME, including the supported liquid membrane (SLM), pH of the donor and acceptor phases, applied voltage, and sample flow rate, were optimized. Also, the concentration of FeCl3, as a chromogenic reagent, and its reaction time with SA were investigated to find the best concentration-dependent signal. Under the optimized conditions, a good relationship was observed between the green intensity and SA concentration within the range of 1.0-100.0 mg l-1 (R2 = 0.9946) in water and 5.0-100.0 mg l-1 (R2 = 0.9902) in plasma. Intra- and inter-day RSDs% were obtained less than 4.7% and 7.7%, respectively. Finally, the method was successfully applied for measuring SA in foot corn treatment, Aspirin medicines, and human plasma, with relative recoveries between 89.0 and 129.2%.
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Affiliation(s)
- Neda Rezaei
- Department of Analytical Chemistry, Faculty of Chemistry, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran 15418-49611, Iran; Nanomaterial, Separation and Trace Analysis Research Lab, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran 15418-49611, Iran
| | - Shahram Seidi
- Department of Analytical Chemistry, Faculty of Chemistry, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran 15418-49611, Iran; Nanomaterial, Separation and Trace Analysis Research Lab, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran 15418-49611, Iran.
| | - Mina Fotouhi
- Department of Analytical Chemistry, Faculty of Chemistry, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran 15418-49611, Iran; Nanomaterial, Separation and Trace Analysis Research Lab, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran 15418-49611, Iran
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Magnetic solid phase extraction of Sunitinib malate in urine samples assisted with mixed hemimicelle and spectrophotometric detection. Sci Rep 2023; 13:3361. [PMID: 36849725 PMCID: PMC9971239 DOI: 10.1038/s41598-023-30404-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/22/2023] [Indexed: 03/01/2023] Open
Abstract
The mixed hemimicelle-based solid phase extraction method using the coated sodium dodecyl sulfate by magnetic iron oxide nanoparticles as adsorbent was developed for extraction and determination of Sunitinib malate in real samples prior to determination by UV-Visible spectrophotometry. For the characterization of synthesized nanoparticles, Fourier transform infrared spectroscopy, and scanning electron microscopy was used. The influences of different factors affecting the extraction efficiency of Sunitinib malate, including the pH, the adsorbent amount, the volume and eluent type, the amount of the surfactant, the ionic strength, extraction, and desorption time, were investigated. At the optimized conditions, a good linearity with correlation coefficients of 0.998 and 0.999 was obtained over the concentration ranges of 1-22 and 1-19 µg/mL for water and urine samples, in order. The good recoveries of 97% and 99% and also, the limits of detection equal with 0.9, and 0.8 µg/mL for water and urine samples were enhanced, respectively. These results demonstrate that mixed hemimicelle solid phase extraction is a fast, efficient, economical and selective sample preparation method for the extraction and determination of Sunitinib malate in different water and urine sample solutions.
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Montazarolmahdi M, Masrournia M, Nezhadali A. Determination of Salicylic Acid Using a Highly Sensitive and New
Electroanalytical Sensor. CURR ANAL CHEM 2022. [DOI: 10.2174/1573411017666210111095822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
A drug sensor (salicylic acid, in this case) was designed and made up of this research. The senor
was made by modification of paste electrode (MPE) with CuO-SWCNTs and 1-hexyl-3-methylimidazolium chloride
(HMICl). The MPE/CuO-SWCNTs/HMICl showed catalytic activity for the oxidation signal of salicylic acid in
phosphate buffer solution.
Methods:
Electrochemical methods were used as a powerful strategy for the determination of salicylic acid in
pharmaceutical samples. Aiming at this goal, carbon paste electrode was amplified with conductive materials and used as
a working electrode.
Results:
The MPE/CuO-SWCNTs/HMICl was used for the determination of salicylic acid in the concentration range of
1.0 nM – 230 µM using differential pulse voltammetric (DPV) method. At pH=7.0, as optimum condition, the MPE/CuOSWCNTs/HMICl displayed a high-quality ability for the determination of salicylic acid in urine, pharmaceutical serum,
and water samples.
Conclusion:
The MPE/CuO-SWCNTs/HMICl was successfully used as a new and high performance working electrode
for the determination of salicylic acid at a nanomolar level and in real samples.
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Dramou P, Dahn SL, Wang F, Sun Y, Song Z, Liu H, He H. Current review about design's impact on analytical achievements of magnetic graphene oxide nanocomposites. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116211] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liang L, Huang Y, Liu W, Zuo W, Ye F, Zhao S. Colorimetric Detection of Salicylic Acid in Aspirin Using MIL-53(Fe) Nanozyme. Front Chem 2020; 8:671. [PMID: 33062632 PMCID: PMC7530239 DOI: 10.3389/fchem.2020.00671] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 06/29/2020] [Indexed: 01/04/2023] Open
Abstract
The impurity of salicylic acid (SA) in aspirin is a required inspection item for drug quality control. Since free SA is significantly toxic for humans, the content determination of free SA is absolutely necessary to ensure people's health. In this work, a facile colorimetric method was developed for the detection of SA in aspirin by utilizing the MIL-53(Fe) nanozyme. As MIL-53(Fe) possesses enzyme mimicking catalytic activity, 3,3,5,5-tetramethylbenzidine (TMB) can be easily oxidized to blue-oxidized TMB (oxTMB) with the existence of H2O2. Moreover, an inhibition effect on the catalytic activity of the MIL-53(Fe) nanozyme is induced due to the specific complexation between SA and Fe3+ in the center of MIL-53(Fe), which results in a lighter color in the oxTMB. The color change of oxTMB can be seen easily by the naked eye with the addition of different concentrations of SA. Thus, a simple colorimetric platform was established for effectively monitoring SA. A good linear relationship (R 2 = 0.9990) was obtained in the concentration range of 0.4-28 μmol L-1, and the detection limit was 0.26 μmol L-1. In particular, the rationally designed system has been well-applied to the detection of SA impurity in aspirin. Satisfyingly, the detection results are highly in accord with those of HPLC. This novel colorimetric platform broadens the application prospects of nanozymes in the field of pharmaceutical analysis.
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Affiliation(s)
- Ling Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Science of Guangxi Normal University, Guilin, China
| | - Yaojing Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Science of Guangxi Normal University, Guilin, China
| | - Wenren Liu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Science of Guangxi Normal University, Guilin, China
| | - Weiyuan Zuo
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Science of Guangxi Normal University, Guilin, China
| | - Fanggui Ye
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Science of Guangxi Normal University, Guilin, China
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Science of Guangxi Normal University, Guilin, China
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Matrix effect evaluation and validation of the 2,2′-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) radical cation scavenging assay, as well as its application using a tejate, an ancient beverage in Mexico. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00829-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Ulusoy Hİ, Yılmaz E, Soylak M. Magnetic solid phase extraction of trace paracetamol and caffeine in synthetic urine and wastewater samples by a using core shell hybrid material consisting of graphene oxide/multiwalled carbon nanotube/Fe3O4/SiO2. Microchem J 2019. [DOI: 10.1016/j.microc.2018.11.056] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ma Y, Chen T, Iqbal MZ, Yang F, Hampp N, Wu A, Luo L. Applications of magnetic materials separation in biological nanomedicine. Electrophoresis 2019; 40:2011-2028. [DOI: 10.1002/elps.201800401] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/09/2019] [Accepted: 01/19/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Yuanyuan Ma
- Department of Chemistry College of Sciences Shanghai University Shanghai P. R. China
- CAS Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo P. R. China
| | - Tianxiang Chen
- CAS Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo P. R. China
| | - Muhammad Zubair Iqbal
- CAS Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo P. R. China
| | - Fang Yang
- CAS Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo P. R. China
- Cixi Institute of Biomedical Engineering Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo P. R. China
- Fachbereich Chemie Philipps Universität Marburg Marburg Germany
| | - Norbert Hampp
- Fachbereich Chemie Philipps Universität Marburg Marburg Germany
| | - Aiguo Wu
- CAS Key Laboratory of Magnetic Materials and Devices & Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo P. R. China
- Cixi Institute of Biomedical Engineering Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo P. R. China
| | - Liqiang Luo
- Department of Chemistry College of Sciences Shanghai University Shanghai P. R. China
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9
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Current direction and advances in analytical sample extraction techniques for drugs with special emphasis on bioanalysis. Bioanalysis 2019; 11:313-332. [PMID: 30663327 DOI: 10.4155/bio-2018-0144] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Analytical techniques may not be compatible or sufficiently sensitive to the analytes, unless it undergoes a specific sample extraction procedure. Sample extraction can be considered as one of the key steps in analysis. Analysis of a poorly treated sample may produce inferior quality of analytical data. Continuous advancement and development of newer sample extraction techniques such as solid phase microextraction, ultrasound, magnetically and microwave assisted magnetic extraction; electro-membrane extraction and dried blood spotting are to address the shortcomings of the existing techniques and to provide more automation, minimizing preparation time and make them high throughput. This review summarizes the suitability of application of the advanced sample preparation techniques available for chemical and bioanalysis in a comprehensive manner. This review also provides a scientific guidance for selecting the appropriate sample extraction technique based on sample type.
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Omidinasab M, Rahbar N, Ahmadi M, Kakavandi B, Ghanbari F, Kyzas GZ, Martinez SS, Jaafarzadeh N. Removal of vanadium and palladium ions by adsorption onto magnetic chitosan nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:34262-34276. [PMID: 30291614 DOI: 10.1007/s11356-018-3137-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/03/2018] [Indexed: 05/15/2023]
Abstract
Chitosan (CS), synthesized from chitin chemically extracted from shrimp shells, was used for the synthesis of magnetic chitosan nanoparticles (Fe3O4-CSN), which makes the adsorbent easier to separate. Fe3O4-CSN was used for the removal of toxic metals such as vanadium (V(V)) and palladium (Pd(II)) ions from aqueous solutions. Influencing factors on the adsorption process such as pH, contact time, adsorbent dosage, and agitation speed were investigated. A competitive adsorption of V(V) and Pd(II) ions for the active sites was also studied. The monolayer maximum adsorption capacities (Qm) of 186.6 and 192.3 mg/g were obtained for V(V) and Pd(II) ions, respectively. The pseudo-second-order equation gave the best fit for the kinetic data, implying that chemisorption was the determining step. Freundlich model yielded a much better fit than the other adsorption models assessed (Langmuir, Temkin and Dubinin-Radushkevich). Thus, the adsorption of V(V) and Pd(II) ions onto Fe3O4-CSN is a combination of physical and chemical adsorption, as based on the kinetics and equilibrium study. Generally, physical adsorption is the mechanism that governs the system, while chemical adsorption is the slowest adsorption step that takes place. Thermodynamic studies displayed that the adsorption process was exothermic and spontaneous. Removal efficiencies of 99.9% for V(V) and 92.3% for Pd(II) ions were achieved, implying that Fe3O4-CSN adsorbent had an excellent ability for the removal of the metal ions from real industrial wastewaters without remarkable matrix effect. Graphical abstract ᅟ.
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Affiliation(s)
- Maryam Omidinasab
- Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Nadereh Rahbar
- Nanotechnology Research Center, Faculty of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mehdi Ahmadi
- Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Babak Kakavandi
- Research Center for Health, Safety and Environment, Alborz University of Medical Sciences, Karaj, Iran
- Department of Environmental Health Engineering, Alborz University of Medical Sciences, Karaj, Iran
| | - Farshid Ghanbari
- Department of Environmental Health Engineering, Abadan School of Medical Sciences, Abadan, Iran
| | - George Z Kyzas
- Hephaestus Advanced Laboratory, Eastern Macedonia and Thrace Institute of Technology, Kavala, Greece
| | - Susana Silva Martinez
- Centro de Investigaciones en Ingeniería y Ciencias Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, 62209, Cuernavaca, Mor, Mexico
| | - Neemat Jaafarzadeh
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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11
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A novel micro-extraction strategy for extraction of bisphosphonates from biological fluids using zirconia nanoparticles coupled with spectrofluorimetry and high performance liquid chromatography. J Food Drug Anal 2018; 26:1303-1311. [PMID: 30249329 PMCID: PMC9298561 DOI: 10.1016/j.jfda.2018.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 02/13/2018] [Accepted: 03/13/2018] [Indexed: 01/17/2023] Open
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12
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Experimental and molecular docking study on graphene/Fe3O4 composites as a sorbent for magnetic solid-phase extraction of seven imidazole antifungals in environmental water samples prior to LC-MS/MS for enantiomeric analysis. Microchem J 2018. [DOI: 10.1016/j.microc.2018.04.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Gonzalez-Rivera ML, Martinez-Morales F, Alonso-Castro AJ, Lopez-Rodriguez JF, Zapata-Morales JR, Aranda Romo S, Aragon-Martinez OH. Validated and rapid measurement of the ferric reducing antioxidant power in plasma samples. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0512-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang Z, Zhang X, Jiang S, Guo X. Magnetic solid-phase extraction based on magnetic multiwalled carbon nanotubes for the simultaneous enantiomeric analysis of five β-blockers in the environmental samples by chiral liquid chromatography coupled with tandem mass spectrometry. Talanta 2018; 180:98-107. [DOI: 10.1016/j.talanta.2017.12.034] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 12/09/2017] [Accepted: 12/12/2017] [Indexed: 11/16/2022]
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15
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The performance study on ultrasonic/Fe 3 O 4 /H 2 O 2 for degradation of azo dye and real textile wastewater treatment. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.047] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Application of cation-modified sulfur nanoparticles as an efficient sorbent for separation and preconcentration of carbamazepine in biological and pharmaceutical samples prior to its determination by high-performance liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1063:245-252. [DOI: 10.1016/j.jchromb.2017.07.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 07/10/2017] [Accepted: 07/27/2017] [Indexed: 10/19/2022]
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17
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Shokrollahi A, Mohammadpour Z, Abbaspour A. Colorimetric Determination of Free Salicylic Acid in Aspirin and Urine by Scanometry as a New, Reliable, Inexpensive and Simple Method. Pharm Chem J 2017. [DOI: 10.1007/s11094-017-1607-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chang YH, Huang CW, Fu SF, Wu MY, Wu T, Lin YW. Determination of salicylic acid using a magnetic iron oxide nanoparticle-based solid-phase extraction procedure followed by an online concentration technique through micellar electrokinetic capillary chromatography. J Chromatogr A 2017; 1479:62-70. [PMID: 27988078 DOI: 10.1016/j.chroma.2016.12.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 12/07/2016] [Accepted: 12/09/2016] [Indexed: 02/06/2023]
Abstract
In this study, a magnetic iron oxide nanoparticle-based solid-phase extraction procedure combined with the online concentration and separation of salicylic acid (SA) through micellar electrokinetic chromatography-UV detection (MEKC-UV) was developed. Under optimal experimental conditions, a good linearity in the range of 0.01-100μmolL-1 was obtained with a coefficient of correlation of 0.9999. The detection sensitivity of the proposed method exhibited an approximately 1026-fold improvement compared with a single MEKC method without online concentration, and the detection limit (S/N=3) was 3.80nmolL-1. The repeatability of the method was evaluated using intraday and interday RSDs (11.5% and 17.0%, respectively). The method was used to determine SA concentrations in tobacco leaves (Nicotiana tabacum L. cv. Samsun) from the NN genotype, nn genotype, and Nt-NahG mutant strains, as well as in shampoo and ointment samples. Rapid extraction and separation (<50min), acceptable repeatability (RSD<17.0%), and high spiked recoveries (95.8%-102.4%) were observed for plants, detergents, and pharmaceuticals.
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Affiliation(s)
- Yu-Hsuan Chang
- Department of Chemistry, National Changhua University of Education, Changhua City, Taiwan
| | - Chang-Wei Huang
- Department of Chemistry, National Changhua University of Education, Changhua City, Taiwan
| | - Shih-Feng Fu
- Department of Biology, National Changhua University of Education, Changhua, Taiwan
| | - Mei-Yao Wu
- Research Centre for Traditional Chinese Medicine, Department of Medical Research, China Medical University Hospital, Taichung City, Taiwan
| | - Tsunghsueh Wu
- Department of Chemistry, University of Wisconsin-Platteville, Platteville, USA
| | - Yang-Wei Lin
- Department of Chemistry, National Changhua University of Education, Changhua City, Taiwan.
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Castro-Grijalba A, Reyes-Gallardo EM, Wuilloud RG, Lucena R, Cárdenas S. Synthesis of magnetic polymeric ionic liquid nanocomposites by the Radziszewski reaction. RSC Adv 2017. [DOI: 10.1039/c7ra07947h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The application of the Radziszewski reaction is proposed for the first time for the synthesis of magnetic polymeric ionic liquids. After their characterization, the sorption ability of the nanocomposites towards acidic compounds have been evaluated.
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Affiliation(s)
- Alexander Castro-Grijalba
- Laboratory of Analytical Chemistry for Research and Development (QUIANID)
- Facultad de Ciencias Exactas y Naturales
- Universidad Nacional de Cuyo
- Instituto Interdisciplinario de Ciencias Básicas (ICB), UNCUYO-CONICET
- (5500) Mendoza
| | - Emilia M. Reyes-Gallardo
- Departamento de Química Analítica
- Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
| | - Rodolfo G. Wuilloud
- Laboratory of Analytical Chemistry for Research and Development (QUIANID)
- Facultad de Ciencias Exactas y Naturales
- Universidad Nacional de Cuyo
- Instituto Interdisciplinario de Ciencias Básicas (ICB), UNCUYO-CONICET
- (5500) Mendoza
| | - Rafael Lucena
- Departamento de Química Analítica
- Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
| | - Soledad Cárdenas
- Departamento de Química Analítica
- Instituto Universitario de Investigación en Química Fina y Nanoquímica IUIQFN
- Universidad de Córdoba
- E-14071 Córdoba
- Spain
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Eskandari H, Bezaatpour A, Eslami F. Naked magnetite nanoparticles for both clean-up and solid-phase extraction-trace determination of mercury. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0993-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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23
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Azari Z, Pourbasheer E, Beheshti A. Mixed hemimicelles solid-phase extraction based on sodium dodecyl sulfate (SDS)-coated nano-magnets for the spectrophotometric determination of Fingolomid in biological fluids. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 153:599-604. [PMID: 26439525 DOI: 10.1016/j.saa.2015.09.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/18/2015] [Accepted: 09/20/2015] [Indexed: 06/05/2023]
Abstract
In this study, mixed hemimicelles solid-phase extraction (SPE) based on sodium dodecyl sulfate (SDS)-coated nano-magnets Fe3O4 was investigated as a novel method for the separation and determination of Fingolimod (FLM) in water, urine and plasma samples prior to spectrophotometeric determination. Due to the high surface area of these new sorbents and the excellent adsorption capacity after surface modification by SDS, satisfactory extraction recoveries can be produced. The main factors affecting the adsolubilization of analysts, such as pH, surfactant and adsorbent amounts, ionic strength, extraction time and desorption conditions were studied and optimized. Under the selected conditions, FLM has been quantitatively extracted. The accuracy of the method was evaluated by recovery measurements on spiked samples, and good recoveries of 96%, 95% and 88% were observed for water, urine and plasma respectively. Proper linear behaviors over the investigated concentration ranges of 2-26, 2-17 and 2-13 mg/L with good coefficients of determination, 0.998, 0.997 and 0.995 were achieved for water, urine and plasma samples, respectively. To the best of our knowledge, this is the first time that a mixed hemimicelles SPE method based on magnetic separation and nanoparticles has been used as a simple and sensitive method for monitoring of FLM in water and biological samples.
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Affiliation(s)
- Zhila Azari
- Department of Chemistry, Payame Noor University (PNU), P. O. Box 19395-3697, Tehran, Iran
| | - Eslam Pourbasheer
- Department of Chemistry, Payame Noor University (PNU), P. O. Box 19395-3697, Tehran, Iran.
| | - Abolghasem Beheshti
- Department of Chemistry, Payame Noor University (PNU), P. O. Box 19395-3697, Tehran, Iran
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Magnetic silica nanomaterials for solid-phase extraction combined with dispersive liquid-liquid microextraction of ultra-trace quantities of plasticizers. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1474-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Magnetic separation techniques in sample preparation for biological analysis: A review. J Pharm Biomed Anal 2014; 101:84-101. [DOI: 10.1016/j.jpba.2014.04.017] [Citation(s) in RCA: 187] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 04/10/2014] [Accepted: 04/14/2014] [Indexed: 11/16/2022]
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Zheng X, He L, Duan Y, Jiang X, Xiang G, Zhao W, Zhang S. Poly(ionic liquid) immobilized magnetic nanoparticles as new adsorbent for extraction and enrichment of organophosphorus pesticides from tea drinks. J Chromatogr A 2014; 1358:39-45. [DOI: 10.1016/j.chroma.2014.06.078] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 06/22/2014] [Accepted: 06/23/2014] [Indexed: 01/17/2023]
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Wierucka M, Biziuk M. Application of magnetic nanoparticles for magnetic solid-phase extraction in preparing biological, environmental and food samples. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.04.007] [Citation(s) in RCA: 324] [Impact Index Per Article: 32.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Determination of residual nonsteroidal anti-inflammatory drugs in aqueous sample using magnetic nanoparticles modified with cetyltrimethylammonium bromide by high performance liquid chromatography. ScientificWorldJournal 2014; 2014:127835. [PMID: 24982923 PMCID: PMC4058801 DOI: 10.1155/2014/127835] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 02/12/2014] [Indexed: 11/18/2022] Open
Abstract
A simple and sensitive solid-phase extraction method for separation and preconcentration of trace amount of four nonsteroidal anti-inflammatory drugs (naproxen, indomethacin, diclofenac, and ibuprofen) using Fe3O4 magnetic nanoparticles modified with cetyltrimethylammonium bromide has been developed. For this purpose, the surface of MNPs was modified with cetyltrimethylammonium bromide (CTAB) as a cationic surfactant. Effects of different parameters influencing the extraction efficiency of drugs including the pH, amount of salt, shaking time, eluent type, the volume of solvent, amount of adsorbent, sample volume, and the time of desorption were investigated and optimized. Methanol has been used as desorption solvent and the extracts were analysed on a reversed-phase octadecyl silica column using 0.02 M phosphate-buffer (pH = 6.02) acetonitrile (65 : 35 v/v) as the mobile phase and the effluents were measured at 202 nm with ultraviolet detector. The relative standard deviation (RSD%) of the method was investigated at three concentrations (25, 50, and 200 ng/mL) and was in the range of 3.98–9.83% (n = 6) for 50 ng/mL. The calibration curves obtained for studied drugs show reasonable linearity (R2 > 0.99) and the limit of detection (LODs) ranged between 2 and 7 ng/mL. Finally, the proposed method has been effectively employed in extraction and determination of the drugs in biological and environmental samples.
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Rahbar N, Jahangiri A, Boumi S, Khodayar MJ. Mercury removal from aqueous solutions with chitosan-coated magnetite nanoparticles optimized using the box-behnken design. Jundishapur J Nat Pharm Prod 2014; 9:e15913. [PMID: 24872943 PMCID: PMC4036385 DOI: 10.17795/jjnpp-15913] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/02/2013] [Accepted: 12/21/2013] [Indexed: 11/25/2022] Open
Abstract
Background: Nowadays, removal of heavy metals from the environment is an important problem due to their toxicity. Objectives: In this study, a modified method was used to synthesize chitosan-coated magnetite nanoparticles (CCMN) to be used as a low cost and nontoxic adsorbent. CCMN was then employed to remove Hg2+ from water solutions. Materials and Methods: To remove the highest percentage of mercury ions, the Box-Behnken model of response surface methodology (RSM) was applied to simultaneously optimize all parameters affecting the adsorption process. Studied parameters of the process were pH (5-8), initial metal concentration (2-8 mg/L), and the amount of damped adsorbent (0.25-0.75 g). A second-order mathematical model was developed using regression analysis of experimental data obtained from 15 batch runs. Results: The optimal conditions predicted by the model were pH = 5, initial concentration of mercury ions = 6.2 mg/L, and the amount of damped adsorbent = 0.67 g. Confirmatory testing was performed and the maximum percentage of Hg2+ removed was found to be 99.91%. Kinetic studies of the adsorption process specified the efficiency of the pseudo second-order kinetic model. The adsorption isotherm was well-fitted to both the Langmuir and Freundlich models. Conclusions: CCMN as an excellent adsorbent could remove the mercury ions from water solutions at low and moderate concentrations, which is the usual amount found in environment.
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Affiliation(s)
- Nadereh Rahbar
- Nanotechnology Research Center, Jundishapur University of Medical Sciences, Ahvaz, IR Iran ; Department of Medicinal Chemistry, School of Pharmacy, Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Alireza Jahangiri
- Nanotechnology Research Center, Jundishapur University of Medical Sciences, Ahvaz, IR Iran ; Department of Medicinal Chemistry, School of Pharmacy, Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Shahin Boumi
- Department of Medicinal Chemistry, School of Pharmacy, Jundishapur University of Medical Sciences, Ahvaz, IR Iran
| | - Mohammad Javad Khodayar
- Department of Pharmacology and Toxicology, Toxicology Research Center, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran
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de Souza KC, Andrade GF, Vasconcelos I, de Oliveira Viana IM, Fernandes C, de Sousa EMB. Magnetic solid-phase extraction based on mesoporous silica-coated magnetic nanoparticles for analysis of oral antidiabetic drugs in human plasma. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 40:275-80. [PMID: 24857494 DOI: 10.1016/j.msec.2014.04.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 03/18/2014] [Accepted: 04/03/2014] [Indexed: 11/25/2022]
Abstract
In the present work, magnetic nanoparticles embedded into mesoporous silica were prepared in two steps: first, magnetite was synthesized by oxidation-precipitation method, and next, the magnetic nanoparticles were coated with mesoporous silica by using nonionic block copolymer surfactants as structure-directing agents. The mesoporous SiO2-coated Fe3O4 samples were functionalized using octadecyltrimethoxysilane as silanizing agent. The pure and functionalized silica nanoparticles were physicochemically and morphologically characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 adsorption, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The resultant magnetic silica nanoparticles were applied as sorbents for magnetic solid-phase extraction (MSPE) of oral antidiabetic drugs in human plasma. Our results revealed that the magnetite nanoparticles were completely coated by well-ordered mesoporous silica with free pores and stable pore walls, and that the structural and magnetic properties of the Fe3O4 nanoparticles were preserved in the applied synthesis route. Indeed, the sorbent material was capable of extracting the antidiabetic drugs from human plasma, being useful for the sample preparation in biological matrices.
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Affiliation(s)
- Karynne Cristina de Souza
- Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Rua Professor Mário Werneck, s/n. Campus Universitário, Belo Horizonte, MG CEP 30.123-970, Brazil
| | - Gracielle Ferreira Andrade
- Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Rua Professor Mário Werneck, s/n. Campus Universitário, Belo Horizonte, MG CEP 30.123-970, Brazil
| | - Ingrid Vasconcelos
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Iara Maíra de Oliveira Viana
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Christian Fernandes
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Edésia Martins Barros de Sousa
- Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Rua Professor Mário Werneck, s/n. Campus Universitário, Belo Horizonte, MG CEP 30.123-970, Brazil.
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31
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Yamini Y, Faraji M. Extraction and determination of trace amounts of chlorpromazine in biological fluids using magnetic solid phase extraction followed by HPLC. J Pharm Anal 2014; 4:279-285. [PMID: 29403891 PMCID: PMC5761214 DOI: 10.1016/j.jpha.2014.03.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 02/18/2014] [Accepted: 03/05/2014] [Indexed: 10/25/2022] Open
Abstract
A simple, rapid and sensitive method termed as magnetic solid phase extraction (MSPE) combined with high-performance liquid chromatography-ultraviolet detector (HPLC-UV) has been proposed for the determination of trace amounts of chlorpromazine (CPZ) in water, urine and plasma samples. The separation and determination was performed on a C18 column under the optimal chromatographic conditions. Several factors influencing the extraction efficiency of CPZ, such as pH, surfactant and adsorbent amounts, ionic strength, extraction time, sample volume and desorption conditions, were studied and optimized. Under the optimal MSPE conditions, the extraction percentage of CPZ was 74%, 27% and 16% in water, urine and plasma samples, respectively. The limits of detection (LODs) of the proposed approach were 0.1, 5.0 and 10 ng/mL in water, urine and plasma samples, respectively. The relative standard deviations (RSDs) based on five replicate determinations at 10 ng/mL level of CPZ was 1.2%. Good linear behaviors over the investigated concentration ranges (0.25-300 ng/mL) with good coefficient of determination, R2>0.9998, were obtained. Good spike recoveries with relative errors less than 9.0% were obtained when applying the proposed method to water, urine and plasma samples.
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Affiliation(s)
- Yadollah Yamini
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Mohammad Faraji
- Faculty of Food Industry and Agriculture, Department of Food Science & Technology, Standard Research Institute (SRI), Karaj, P.O. Box 31745-139, Iran
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Mohammadi SZ, Hamidian H, Karimzadeh L, Moeinadini Z. Simultaneous extraction of trace amounts of cobalt, nickel and copper ions using magnetic iron oxide nanoparticles without chelating agent. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813110142] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Preconcentration of Pb2+ by iron oxide/amino-functionalized silica core–shell magnetic nanoparticles as a novel solid-phase extraction adsorbent and its determination by flame atomic absorption spectrometry. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/s13738-012-0162-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Jafari M, Badihi Z, Jazan E. A new approach to determine salicylic acid in human urine and blood plasma based on negative electrospray ion mobility spectrometry after selective separation using a molecular imprinted polymer. Talanta 2012; 99:520-6. [DOI: 10.1016/j.talanta.2012.06.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 06/12/2012] [Accepted: 06/13/2012] [Indexed: 11/28/2022]
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35
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Dispersive micro-solid phase extraction of ortho-phosphate ions onto magnetite nanoparticles and determination as its molybdenum blue complex. Talanta 2012; 99:62-8. [DOI: 10.1016/j.talanta.2012.05.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 05/07/2012] [Accepted: 05/10/2012] [Indexed: 11/19/2022]
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36
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Mohammadi SZ, Shamspur T, Karimi MA, Naroui E. Preconcentration of trace amounts of Pb(II) ions without any chelating agent by using magnetic iron oxide nanoparticles prior to ETAAS determination. ScientificWorldJournal 2012; 2012:640437. [PMID: 22649300 PMCID: PMC3353310 DOI: 10.1100/2012/640437] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Accepted: 11/16/2011] [Indexed: 12/01/2022] Open
Abstract
This work investigates the potential of magnetic Fe3O4 nanoparticles as an adsorbent for separation and preconcentration of trace amounts of lead from water samples prior to electrothermal atomic absorption spectrometry (ETAAS) determination. No chemical modifier is required in graphite furnace. Pb(II) ion was adsorbed on magnetic Fe3O4 nanoparticles in the pH range of 5.5–6.5, and then magnetic nanoparticles (MNPs) were easily separated from the aqueous solution by applying an external magnetic field; so, no filtration or centrifugation was necessary. After extraction and collection of MNPs, the analyte ions were eluted using HNO3 1.0 mol L−1. Several factors that may affect the preconcentration and extraction process, such as pH, type, and volume of eluent, amount of MNPs, sample volume, salting out effect, and interference ions were studied and optimized. Under the best experimental conditions, linearity was maintained between 0.005–0.5 ng mL−1. Detection limits for lead were 0.8 ng L−1 based on 3Sb. The relative standard deviation of seven replicate measurements of 0.05 ng mL−1 of Pb(II) ions was 3.8%. Finally, the method was successfully applied to extraction and determination of lead ions in the water and standard samples.
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Affiliation(s)
- S Z Mohammadi
- Department of Chemistry, Payame Noor University, PO Box 19395-4697, Tehran, Iran
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Bagheri H, Zandi O, Aghakhani A. Reprint of: Extraction of fluoxetine from aquatic and urine samples using sodium dodecyl sulfate-coated iron oxide magnetic nanoparticles followed by spectrofluorimetric determination. Anal Chim Acta 2012; 716:61-5. [DOI: 10.1016/j.aca.2011.10.033] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/13/2011] [Accepted: 02/27/2011] [Indexed: 11/15/2022]
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38
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Chen B, Wang S, Zhang Q, Huang Y. Highly stable magnetic multiwalled carbon nanotube composites for solid-phase extraction of linear alkylbenzene sulfonates in environmental water samples prior to high-performance liquid chromatography analysis. Analyst 2012; 137:1232-40. [DOI: 10.1039/c2an16030g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Wu Q, Zhao G, Feng C, Wang C, Wang Z. Preparation of a graphene-based magnetic nanocomposite for the extraction of carbamate pesticides from environmental water samples. J Chromatogr A 2011; 1218:7936-42. [DOI: 10.1016/j.chroma.2011.09.027] [Citation(s) in RCA: 248] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 09/07/2011] [Accepted: 09/09/2011] [Indexed: 11/26/2022]
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40
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Abstract
Nanoparticles (NPs) have attracted a great deal of attention in the last decade due to their exceptional mechanical, optical and electronic properties. This article deals with the use of NPs as probes for the extraction of biomolecules from biological samples. In this context, NPs present some advantages compared with conventional sorbents. Their high surface-to-volume ratio, easy synthetic (especially for inorganic NPs) and derivatization procedures, and their biocompatibility make them a powerful alternative. In order to provide a systematic approach to the topic, NPs have been divided into two general groups attending to their chemical nature. Carbon-based (e.g., fullerene and nanotubes) and inorganic NPs (e.g., gold and magnetic NPs) are considered in depth, explaining their main properties and applications. After these critical considerations, the most important conclusions and essential trends in this field are also outlined.
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Abdolmohammad-Zadeh H, Kohansal S, Sadeghi G. Nickel–aluminum layered double hydroxide as a nanosorbent for selective solid-phase extraction and spectrofluorometric determination of salicylic acid in pharmaceutical and biological samples. Talanta 2011; 84:368-73. [DOI: 10.1016/j.talanta.2011.01.026] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/05/2011] [Accepted: 01/11/2011] [Indexed: 10/18/2022]
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42
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Bagheri H, Zandi O, Aghakhani A. Extraction of fluoxetine from aquatic and urine samples using sodium dodecyl sulfate-coated iron oxide magnetic nanoparticles followed by spectrofluorimetric determination. Anal Chim Acta 2011; 692:80-4. [DOI: 10.1016/j.aca.2011.02.060] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 02/13/2011] [Accepted: 02/27/2011] [Indexed: 10/18/2022]
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43
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Yablotskii KV, Shekhovtsova TN. Enzymatic determination of anions. JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.1134/s1061934810070026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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44
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Lv J, Liang H, Yuan Q, Xu Y, Wang T. Preparative Purification of the Major Flavonoid Glabridin from Licorice Roots by Solid Phase Extraction and Preparative High Performance Liquid Chromatography. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496391003697358] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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