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Metias YM, Hosny MM, Ayad MM, Kaji N. High ‐ throughput spectrofluorimetric approach for one-step, sensitive, and green assays of alfuzosin hydrochloride using a 96-well microplate reader: Application to tablet formulations and human urine. TALANTA OPEN 2022. [DOI: 10.1016/j.talo.2022.100139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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2
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Beh SY, Md Saleh N, Asman S. Surfactant-functionalised magnetic ferum oxide coupled with high performance liquid chromatography for the extraction of phenol. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:607-619. [PMID: 33480366 DOI: 10.1039/d0ay02166k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The usage of phenols in the marketplace has been increasing tremendously, which has raised concerns about their toxicity and potential effect as emerging pollutants. Phenol's structure has closely bonded phenyl and hydroxy groups, thereby making its functional characteristics closely similar to that of alcohol. As a result, phenol is used as a base compound for commercial home-based products. Hence, a simple and efficient procedure is required to determine the low concentration of phenols in environmental water samples. In this research, a method of combining magnetic nanoparticles (MNPs) with surfactant Sylgard 309 was developed to overcome the drawbacks in the classical extraction methods. In addition, this developed method improved the performance of extraction when MNPs and the surfactant Sylgard 309 were used separately, as reported in the previous research. This MNP-Sylgard 309 was synthesised by the coprecipitation method and attracts phenolic compounds in environmental water samples. Response surface methodology was used to study the parameters and responses in order to obtain an optimised condition using MNP-Sylgard 309. The parameters included the effect of pH, extraction time, and concentration of the analyte. Meanwhile, the responses measured were the peak area of the chromatogram and the percentage recovery. From this study, the results of the optimum conditions for extraction using MNP-Sylgard 309 were pH 7, extraction time of 20 min, and analyte concentration of 10.0 μg mL-1. Under the optimized conditions, MNP-Sylgard 309 showed a low limit of detection of 0.665 μg mL-1 and the limit of quantification was about 2.219 μg mL-1. MNP-Sylgard 309 was successfully applied on environmental water samples such as lake and river water. High recovery (76.23%-110.23%) was obtained.
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Affiliation(s)
- Shiuan Yih Beh
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, The National University of Malaysia (UKM), 43600 UKM Bangi, Selangor, Malaysia.
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Kojro G, Wroczyński P. Cloud Point Extraction in the Determination of Drugs in Biological Matrices. J Chromatogr Sci 2020; 58:151-162. [PMID: 31681960 DOI: 10.1093/chromsci/bmz064] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 02/23/2019] [Accepted: 07/07/2019] [Indexed: 11/15/2022]
Abstract
Cloud point extraction (CPE) is a simple, safe and environment-friendly technique used in the preparation of various samples. It was primarily developed for the assessment of environmental samples, especially analyzed for metals. Recently, this technique has been used in the extraction and determination of various chemical compounds (e.g., drugs, pesticides and vitamins), in various matrices (e.g., human plasma, human serum, milk and urine). In this review, we show that CPE is a reliable method of extraction and can be used in analytical laboratories in combination with other techniques that can be used in the determination of drugs and other chemicals in the human biological matrix. According to the literature, a combination of different methods provides good recovery and can be used in the simultaneous determination of many drugs in a single analysis. CPE can be optimized by changing its conditions (e.g., type of surfactant used, incubation temperature, pH and the addition of salts). In this review, we present the optimized CPE methods used in the determination of various pharmaceuticals and describe how the conditions affect the performance of extraction. This data might support future designing of the new CPE applications that are simple and more accurate. We compared CPE with other extraction methods and also showed the advantages and disadvantages of various extraction techniques along with a discussion on their environmental impact. According to the publications reviewed, it is obvious that CPE is an easy, safe, rapid and inexpensive method of extraction.
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Affiliation(s)
- Grzegorz Kojro
- Department of Bioanalysis and Drug Analysis, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Street, 02-097 Warsaw, Poland
| | - Piotr Wroczyński
- Department of Bioanalysis and Drug Analysis, Faculty of Pharmacy, Medical University of Warsaw, 1 Banacha Street, 02-097 Warsaw, Poland
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Omar MA, Mohamed AA, Mohamed AMI, Derayea SM, Hammad MA. Mending the fluorescence of two α-blockers through a semiquinoid formation: Hyphenated with experimental design optimization. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118624. [PMID: 32604051 DOI: 10.1016/j.saa.2020.118624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/02/2020] [Accepted: 06/14/2020] [Indexed: 06/11/2023]
Abstract
Herein, a selective and rapid spectrofluorimetric method coupled with experimental design approach for reliable and efficient determination of two α-blockers, namely: terazosin hydrochloride (TER) and doxazosin mesylate (DOX) in their marketed tablets was developed. The presented method adopts formation of a semi-quinoid form of the studied drugs in borate buffer. The effects of parameters influencing fluorescence intensity including pH, the volume of buffer and diluting solvent were optimized using an experimental design methodology. The optimum conditions were found to be pH: 9.8, the volume of buffer: 2.0 mL and diluting solvent: water. Under the optimum experimental conditions, a large enhancement of the studied drugs fluorescence was obtained, measured at 387 after excitation at 246 nm for either TER or DOX with limits of detection 0.05 and 0.14 ng mL-1 and limits of quantification 0.14 and 0.43 ng mL-1 in the concentration ranges of 0.2-30.0 ng mL-1 and 0.5-30.0 ng mL-1 for TER and DOX, respectively. The presented method was validated according to the ICH guidelines. Furthermore, it extended to perform the content uniformity testing and analysis of the studied drugs in spiked human plasma with % recovery (96.00 ± 0.45-101.42 ± 1.20%, n = 3).
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Affiliation(s)
- Mahmoud A Omar
- Department of Pharmacognosy and Pharmaceutical Chemistry, College of Pharmacy, Taibah University, Al Madinah, Al Munawarah 30001, Kingdom of Saudi Arabia; Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia , Egypt
| | - Abobakr A Mohamed
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Fayoum, University, Fayoum, Egypt.
| | - Abdel-Maaboud I Mohamed
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Sayed M Derayea
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia , Egypt
| | - Mohamed A Hammad
- Analytical Chemistry Department, Faculty of Pharmacy, University of Sadat City Sadat City, Egypt
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Nyaba L, Nomngongo PN. Determination of trace metals in vegetables and water samples using dispersive ultrasound-assisted cloud point-dispersive µ-solid phase extraction coupled with inductively coupled plasma optical emission spectrometry. Food Chem 2020; 322:126749. [DOI: 10.1016/j.foodchem.2020.126749] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 10/24/2022]
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Shan X, Tan S, Shi Y, Shao J, Su K, Zhang L, Feng H, Ye H. Activated carbon/diatomite-based magnetic nanocomposites for magnetic solid-phase extraction of S-phenylmercapturic acid from human urine. Biomed Chromatogr 2020; 34:e4834. [PMID: 32203622 DOI: 10.1002/bmc.4834] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 02/28/2020] [Accepted: 03/17/2020] [Indexed: 12/14/2022]
Abstract
In this study, activated carbon/diatomite-based magnetic nancomposites (denoted as AC/DBMNs) were synthesized and applied as an adsorbent for magnetic solid-phase extraction of S-phenylmercapturic acid (S-PMA) from human urine prior to high-performance liquid chromatography. The surface morphologies and structures of AC/DBMNs were characterized by Fourier transform infrared spectroscopy, transmission and scanning electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller surface area, vibrating sample magnetometer and ζ-potential measurements. The experimental parameters including sample volume, sample pH, adsorbent amount, extraction time, elution solvent and desorption time were investigated in detail. Under the optimum conditions, the method exhibited good linearity (r > 0.9993) within the concentration ranges of 0.03-1.0 mg/L. Moreover, the limits of detection and quantification were 0.01 and 0.03 mg/L, respectively. The enrichment factor was 5, and good recoveries (88.9-97.3%) with relative standard deviations in the range of 5.6-6.8% (n = 6) for inter-day and 6.3-8.1% (n = 6) for intra-day were achieved. The developed method was successfully applied to the analysis of S-PMA in urine samples. In addition, this accurate and sensitive method has great potential to be applied in the early screening and clinical diagnosis of the workers exposed to benzene.
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Affiliation(s)
- Xiaoyue Shan
- Hangzhou Occupational Disease Prevention and Control Hospital, Hangzhou, China
| | - Siwei Tan
- Hangzhou Occupational Disease Prevention and Control Hospital, Hangzhou, China
| | - Yanpeng Shi
- Hangzhou Occupational Disease Prevention and Control Hospital, Hangzhou, China
| | - Ji Shao
- Hangzhou Occupational Disease Prevention and Control Hospital, Hangzhou, China
| | - Kewen Su
- Hangzhou Occupational Disease Prevention and Control Hospital, Hangzhou, China
| | - Ling Zhang
- Hangzhou Occupational Disease Prevention and Control Hospital, Hangzhou, China
| | - Hui Feng
- China College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, China
| | - Haipeng Ye
- Hangzhou Occupational Disease Prevention and Control Hospital, Hangzhou, China
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Twenty years of supramolecular solvents in sample preparation for chromatography: achievements and challenges ahead. Anal Bioanal Chem 2020; 412:6037-6058. [PMID: 32206847 DOI: 10.1007/s00216-020-02559-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/20/2020] [Accepted: 02/28/2020] [Indexed: 02/06/2023]
Abstract
Supramolecular solvents (SUPRAS) have progressively become a suitable alternative to organic solvents for sample preparation in chromatographic analysis. The inherent properties of these nanostructured solvents (e.g. different polarity microenvironments, multiple binding sites, possibility of tailoring their properties, etc.) offer multiple opportunities for the development of innovative sample treatment platforms not approachable by conventional solvents. In this review, major achievements attained in the combination SUPRAS-chromatography in the last 20 years as well as the challenges that should be addressed in the near future are critically discussed. Among achievements, particular attention is paid to the theoretical and practical knowledge gained that has helped make substantial progress in the area. In this respect, advances in the understanding of the mechanisms involved in SUPRAS formation and SUPRAS-solute interactions driving extractions are discussed, with a view to the setting up of knowledge-based extraction procedures. Likewise, the strategies followed to improve the compatibility of SUPRAS extracts with liquid and gas chromatography and adapt SUPRAS-based extractions to different formats are presented. Ongoing efforts to apply SUPRAS in multicomponent extractions and synthesize tailored SUPRAS for the development of innovative sample treatments are highlighted. Among challenges identified, discussion is focused on the automation of SUPRAS-based sample treatment and the elucidation of SUPRAS nanostructures, which are considered essential for their acceptance in routine labs and the design of tailored SUPRAS with programmed functions. Graphical abstract.
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Chen CW, Liao FY, Lin YC, Hsieh TJ, Weng JR, Feng CH. Microwave-assisted derivatization combined with coacervative extraction for determining glutathione in biomatrix samples, followed by capillary liquid chromatography. Talanta 2019; 199:464-471. [DOI: 10.1016/j.talanta.2019.02.091] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/27/2019] [Accepted: 02/27/2019] [Indexed: 12/31/2022]
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Ariffin MM, Azmi AHM, Saleh NM, Mohamad S, Rozi SKM. Surfactant functionalisation of magnetic nanoparticles: A greener method for parabens determination in water samples by using magnetic solid phase extraction. Microchem J 2019. [DOI: 10.1016/j.microc.2019.04.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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12
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Hyphenating Supramolecular Solvents and Liquid Chromatography: Tips for Efficient Extraction and Reliable Determination of Organics. Chromatographia 2018. [DOI: 10.1007/s10337-018-3614-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Omar MA, Mohamed AMI, Derayea SM, Hammad MA, Mohamed AA. An efficient spectrofluorimetric method adopts doxazosin, terazosin and alfuzosin coupling with orthophthalaldehyde: Application in human plasma. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 195:215-222. [PMID: 29414581 DOI: 10.1016/j.saa.2018.01.077] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/30/2017] [Accepted: 01/30/2018] [Indexed: 05/06/2023]
Abstract
A new, selective and sensitive spectrofluorimetric method was designed for the quantitation of doxazosin (DOX), terazosin (TER) and alfuzosin (ALF) in their dosage forms and human plasma. The method adopts efficient derivatization of the studied drugs with ortho-phthalaldehyde (OPA), in the presence of 2-mercaptoethanol in borate buffer (pH9.7) to generate a highly fluorescent isoindole derivatives, which can strongly enhance the fluorescence intensities of the studied drugs, allowing their sensitive determination at 430nm after excitation at 337nm. The fluorescence-concentration plots were rectilinear over the ranges (10.0-400.0) ng/mL. Detection and quantification limits were found to be (0.52-3.88) and (1.59-11.76) ng/mL, respectively. The proposed method was validated according to ICH guidelines, and successfully applied for the determination of pharmaceutical preparations of the studied drugs. Moreover, the high sensitivity of the proposed method permits its successful application to the analysis of the studied drugs in spiked human plasma with % recovery (96.12±1.34-100.66±0.57, n=3). A proposal for the reaction mechanism was presented.
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Affiliation(s)
- Mahmoud A Omar
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Abdel-Maaboud I Mohamed
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Sayed M Derayea
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt.
| | - Mohamed A Hammad
- Analytical Chemistry Department, Faculty of Pharmacy, Sadat City University, Sadat City, Egypt
| | - Abobakr A Mohamed
- Analytical Chemistry Department, Faculty of Pharmacy, Minia University, Minia, Egypt
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Mohd NI, Zain NNM, Raoov M, Mohamad S. Determination of carcinogenic herbicides in milk samples using green non-ionic silicone surfactant of cloud point extraction and spectrophotometry. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171500. [PMID: 29765632 PMCID: PMC5936897 DOI: 10.1098/rsos.171500] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 03/13/2018] [Indexed: 05/24/2023]
Abstract
A new cloud point methodology was successfully used for the extraction of carcinogenic pesticides in milk samples as a prior step to their determination by spectrophotometry. In this work, non-ionic silicone surfactant, also known as 3-(3-hydroxypropyl-heptatrimethylxyloxane), was chosen as a green extraction solvent because of its structure and properties. The effect of different parameters, such as the type of surfactant, concentration and volume of surfactant, pH, salt, temperature, incubation time and water content on the cloud point extraction of carcinogenic pesticides such as atrazine and propazine, was studied in detail and a set of optimum conditions was established. A good correlation coefficient (R2 ) in the range of 0.991-0.997 for all calibration curves was obtained. The limit of detection was 1.06 µg l-1 (atrazine) and 1.22 µg l-1 (propazine), and the limit of quantitation was 3.54 µg l-1 (atrazine) and 4.07 µg l-1 (propazine). Satisfactory recoveries in the range of 81-108% were determined in milk samples at 5 and 1000 µg l-1, respectively, with low relative standard deviation, n = 3 of 0.301-7.45% in milk matrices. The proposed method is very convenient, rapid, cost-effective and environmentally friendly for food analysis.
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Affiliation(s)
- N. I. Mohd
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, 13200, Kepala Batas, Penang, Malaysia
| | - N. N. M. Zain
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, 13200, Kepala Batas, Penang, Malaysia
| | - M. Raoov
- Integrative Medicine Cluster, Advanced Medical and Dental Institute (AMDI), Universiti Sains Malaysia, 13200, Kepala Batas, Penang, Malaysia
| | - S. Mohamad
- Environmental Research Group, Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Guo X, Wu H, Guo S, Shi Y, DU J, Zhu P, DU L. Highly Sensitive Fluorescence Methods for the Determination of Alfuzosin, Doxazosin, Terazosin and Prazosin in Pharmaceutical Formulations, Plasma and Urine. ANAL SCI 2018; 32:763-8. [PMID: 27396658 DOI: 10.2116/analsci.32.763] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Polymeric ionic liquid-coated magnetic nanoparticles have been successfully prepared as adsorbents for the magnetic solid-phase extraction of four drugs, namely alfuzosin, doxazosin, terazosin and prazosin, from pharmaceutical preparations, urine samples and plasma samples. The four drugs were detected by fluorescence spectrophotometer. Several extraction parameters, including the pH of the solution; the type, ratio and volume of the desorbing reagent; the amount of adsorbent; the time of the extraction and desorption processes; and the addition of NaCl, were investigated and optimized. Linear responses were determined for the four drugs in the concentration range of 0.5 - 45 ng mL(-1). The limit of detection values for alfuzosin, doxazosin, terazosin and prazosin, which were defined as three times the standard deviation of a blank sample, were determined to be 0.035, 0.034, 0.027 and 0.028 ng mL(-1) (n = 11), respectively. Furthermore, this new method gave preconcentration factors of 114.5, 111.3, 111.1 and 108.5 for these four drugs.
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Affiliation(s)
- Xiaozhen Guo
- School of Chemistry and Material Science, Shanxi Normal University
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16
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Wang Z, Fan Y, Wu R, Huo Y, Wu H, Wang F, Xu X. Novel magnetic g-C3N4/α-Fe2O3/Fe3O4 composite for the very effective visible-light-Fenton degradation of Orange II. RSC Adv 2018; 8:5180-5188. [PMID: 35542420 PMCID: PMC9078141 DOI: 10.1039/c7ra13291c] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 01/20/2018] [Indexed: 11/21/2022] Open
Abstract
A novel magnetic heterogeneous g-C3N4/α-Fe2O3/Fe3O4 catalyst was successfully synthesized through a simple hydrothermal method. The structure, morphology, and optical properties of the catalyst were characterized. The photocatalytic activity of the heterogeneous g-C3N4/α-Fe2O3/Fe3O4 catalyst for the photo-Fenton degradation of Orange II in the presence of H2O2 irradiated with visible light (λ > 420 nm) at neutral pH was evaluated. The g-C3N4/α-Fe2O3/Fe3O4 photocatalyst was found to be an excellent catalyst for the degradation of Orange II and offers great advantages over the traditional Fenton system (Fe(ii/iii)/H2O2). The results indicated that successfully combining monodispersed Fe3O4 nanoparticles and g-C3N4/α-Fe2O3 enhanced light harvesting, retarded photogenerated electron–hole recombination, and significantly enhanced the photocatalytic activity of the system. The g-C3N4/α-Fe2O3/Fe3O4 (30%) sample gave the highest degradation rate constant, 0.091 min−1, which was almost 4.01 times higher than the degradation rate constant for α-Fe2O3 and 2.65 times higher than the degradation rate constant for g-C3N4/α-Fe2O3 under the same conditions. A reasonable mechanism for catalysis by the g-C3N4/α-Fe2O3/Fe3O4 composite was developed. The g-C3N4/α-Fe2O3/Fe3O4 composite was found to be stable and recyclable, meaning it has great potential for use as a photo-Fenton catalyst for effectively degrading organic pollutants in wastewater. A novel magnetic heterogeneous g-C3N4/α-Fe2O3/Fe3O4 catalyst was firstly synthesized and exhibited very effective visible-light-Fenton degradation of Orange II at neutral pH.![]()
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Affiliation(s)
- Zhuliang Wang
- School of Chemistry and Materials Science of Shanxi Normal University
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education
- Linfen
- China
- Research Institute of Materials Science of Shanxi Normal University
| | - Yiping Fan
- School of Chemistry and Materials Science of Shanxi Normal University
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education
- Linfen
- China
| | - Rong Wu
- School of Chemistry and Materials Science of Shanxi Normal University
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education
- Linfen
- China
| | - Yaoxing Huo
- School of Chemistry and Materials Science of Shanxi Normal University
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education
- Linfen
- China
| | - Hao Wu
- School of Chemistry and Materials Science of Shanxi Normal University
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education
- Linfen
- China
- Research Institute of Materials Science of Shanxi Normal University
| | - Fang Wang
- School of Chemistry and Materials Science of Shanxi Normal University
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education
- Linfen
- China
- Research Institute of Materials Science of Shanxi Normal University
| | - Xiaohong Xu
- School of Chemistry and Materials Science of Shanxi Normal University
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education
- Linfen
- China
- Research Institute of Materials Science of Shanxi Normal University
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Mohd NI, Raoov M, Mohamad S, Zain NNM. Performance evaluation of non-ionic silicone surfactants OFX 0309 and DC 193C as a new approach in cloud point extraction – spectrophotometry for determination of atrazine in water samples. RSC Adv 2018; 8:13556-13566. [PMID: 35542552 PMCID: PMC9079888 DOI: 10.1039/c8ra00868j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 03/28/2018] [Indexed: 11/21/2022] Open
Abstract
Cloud point extraction (CPE) – spectrophotometric method had been adopted for the separation of atrazine using the non-ionic silicone surfactant, polysiloxane polyether, as a new approach of atrazine extractor in CPE. There were two types of polysiloxane polyether (DC 193C and OFX 0309) studied to investigate the effectiveness of these surfactants toward atrazine in CPE method. Various effects of operating parameters such as the concentration of surfactant and atrazine, addition of salt and change of temperature and pH on the extraction of atrazine have been studied in detail to find the optimum conditions. The limit of detections (LODs) and quantifications (LOQs) were in the range of 0.09–0.59 μg L−1 and 0.31–1.95 μg L−1 in water samples, respectively. The method recoveries at two spiked levels were 84–105% (CPE-OFX 0309) and 59–69% (CPE-DC 193C) with good correlation of determination (R2) ranging from 0.9927–0.9993 for both methods. The Langmuir isotherm has been used for solubilisation study of surfactant and atrazine. The thermodynamic parameters have been determined such as Gibbs free energy (ΔG°) which increases with temperature, value of enthalpy (ΔH°) and value of entropy (ΔS°) which increase with the surfactant hydrophobicity. The principle of cloud point extraction (CPE) adopted for the separation of atrazine.![]()
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Affiliation(s)
- N. I. Mohd
- Integrative Medicine Cluster
- Advanced Medical and Dental Institute (AMDI)
- Universiti Sains Malaysia
- Kepala Batas
- Malaysia
| | - M. Raoov
- Department of Chemistry
- Faculty of Science
- Universiti Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - S. Mohamad
- Department of Chemistry
- Faculty of Science
- Universiti Malaya
- 50603 Kuala Lumpur
- Malaysia
| | - N. N. M. Zain
- Integrative Medicine Cluster
- Advanced Medical and Dental Institute (AMDI)
- Universiti Sains Malaysia
- Kepala Batas
- Malaysia
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18
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El-Wekil M, Ali HRH, Marzouk AA, Ali R. Enhanced dispersive solid phase extraction assisted by cloud point strategy prior to fluorometric determination of anti-hepatitis C drug velpatasvir in pharmaceutical tablets and body fluids. RSC Adv 2018; 8:13292-13300. [PMID: 35542513 PMCID: PMC9079717 DOI: 10.1039/c7ra13719b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 03/29/2018] [Indexed: 11/25/2022] Open
Abstract
An innovative spectrofluorometric method was developed for the analysis of a recently FDA approved anti-hepatitis C velpatasvir (VELP). The developed method was relied on dispersive solid phase extraction (dSPE) using synergistic effect of reduced graphene oxide (RGO) and cobalt hydroxide nanoparticles (CHNPs) in addition to cloud point extraction (CPE) using polyethylene glycol 6000 (PEG 6000) as non-ionic surfactant. This method combines the merits of preconcentration and interferences elimination achieved by dSPE and CPE, respectively. All relevant parameters such as surfactant concentration, ionic strength, pH, incubation time and others were thoroughly investigated and optimized. Fluorometric detection of VELP was carried out at excitation wavelength of 350 nm and emission wavelength of 415 nm. Under the optimum conditions, a linear calibration curve was achieved in the range of 0.5–45 ng mL−1. Limits of detection (LOD) and quantification (LOQ) based on three and ten times the standard deviation of the blank were 0.040 and 0.112 ng mL−1, respectively. This method was successfully applied for determination of VELP in real samples such as tablets, human plasma and urine samples with good recoveries. Highly sensitive and selective solid phase extraction method combined with cloud point extraction strategy was developed for analysis of velpatasvir in its pharmaceutical tablets and biological fluids.![]()
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Affiliation(s)
- Mohamed M. El-Wekil
- Department of Pharmaceutical Analytical Chemistry
- Faculty of Pharmacy
- Assiut University
- Assiut
- Egypt
| | - Hassan Refat H. Ali
- Department of Pharmaceutical Analytical Chemistry
- Faculty of Pharmacy
- Assiut University
- Assiut
- Egypt
| | - Adel A. Marzouk
- Department of Pharmaceutical Chemistry
- Faculty of Pharmacy
- Al Azhar University
- Assiut
- Egypt
| | - Ramadan Ali
- Department of Pharmaceutical Analytical Chemistry
- Faculty of Pharmacy
- Al Azhar University
- Assiut
- Egypt
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Baezzat MR, Banavand F, Fasihi F. Electrooxidation study and highly sensitive voltammetric determination of alfuzosin employing multi-walled carbon nanotubes and the ionic liquid 1-hexylpyridinium hexafluorophosphate nanocomposite sensor. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.02.119] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Du J, Wu H, Du X, Zhao Z, Zhao X, Shi Y, Guo X, Du L. Magnetic mixed hemimicelle solid-phase extraction based on mixed hemi-/ad-micelle SDS-coated magnetic nanoparticles Fe2-xAlxO3 (x = 0.4) for the fluorimetric determination of carvedilol in biological samples. CAN J CHEM 2017. [DOI: 10.1139/cjc-2016-0385] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mixed hemi-/ad-micelle SDS-coated magnetic nanoparticles (Fe2-xAlxO3 (x = 0.4)) were used as an efficient adsorbent for the extraction and preconcentration of carvedilol (CVD) based on magnetic mixed hemimicelle solid-phase extraction. The Fe2-xAlxO3 magnetic nanoparticles not only have better stability and resistance to acidity, as well as alkalinity, but also are easy to prepare, inexpensive, and environmentally friendly. Several parameters that affected the extraction efficiency were investigated, including the type and volume of desorption solvent, extraction and desorption times, pH of the solution, zeta potential, and amounts of adsorbent and surfactant. Under the optimized extraction conditions, the developed method showed good linearity (R2 = 0.9998) within the range of 0.02–2.7 ng mL−1, and the limit of detection was 0.009 ng mL−1. The spiked recoveries of CVD in urine and plasma samples ranged from 101.50% to 111.00%. To the best of our knowledge, this is the first time that a mixed hemi-/ad-micelle solid-phase extraction method based on magnetic separation and nanoparticles has been used as a simple and sensitive method for the monitoring of CVD in biological samples.
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Affiliation(s)
- Juanli Du
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
| | - Hao Wu
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
| | - Xiaohui Du
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
| | - Zhimin Zhao
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
| | - Xin Zhao
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
| | - Yating Shi
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
| | - Xiaozhen Guo
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
| | - Liming Du
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
- School of Chemistry and Material Science, Shanxi Normal University, Linfen, Shanxi, P.R. China 041004
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Recent Advances in the Combination of Assisted Extraction Techniques. COMPREHENSIVE ANALYTICAL CHEMISTRY 2017. [DOI: 10.1016/bs.coac.2016.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Ionic Liquid-Based Surfactant Extraction Coupled with Magnetic Dispersive μ-Solid Phase Extraction for the Determination of Phthalate Esters in Packaging Milk Samples by HPLC. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0729-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nekouei F, Kargarzadeh H, Nekouei S, Keshtpour F, Makhlouf ASH. Efficient method for determination of methylene blue dye in water samples based on a combined dispersive solid phase and cloud point extraction using Cu(OH)2 nanoflakes: central composite design optimization. Anal Bioanal Chem 2016; 409:1079-1092. [DOI: 10.1007/s00216-016-0026-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 09/27/2016] [Accepted: 10/10/2016] [Indexed: 11/30/2022]
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Wu H, Shi Y, Guo X, Zhao S, Du J, Jia H, He L, Du L. Determination and removal of sulfonamides and quinolones from environmental water samples using magnetic adsorbents. J Sep Sci 2016; 39:4398-4407. [DOI: 10.1002/jssc.201600631] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 09/10/2016] [Accepted: 09/11/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Hao Wu
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
| | - Yating Shi
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
| | - Xiaozhen Guo
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
| | - Shuangli Zhao
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
| | - Juanli Du
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
| | - Hongping Jia
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
| | - Lina He
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
| | - Liming Du
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P.R. China
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Jin T, Wu H, Gao N, Chen X, Lai H, Zheng J, Du L. Extraction of quinolones from milk samples using bentonite/magnetite nanoparticles before determination by high-performance liquid chromatography with fluorimetric detection. J Sep Sci 2015; 39:545-51. [DOI: 10.1002/jssc.201500856] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 11/04/2015] [Accepted: 11/10/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Tao Jin
- Analyzing and Testing Center of Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou P. R. China
| | - Hao Wu
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P. R. China
| | - Nannan Gao
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P. R. China
| | - Xiaodan Chen
- Analyzing and Testing Center of Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou P. R. China
| | - Huajie Lai
- Analyzing and Testing Center of Guangzhou Institute of Chemistry; Chinese Academy of Sciences; Guangzhou P. R. China
| | - Jinfeng Zheng
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P. R. China
| | - Liming Du
- School of Chemistry and Material Science; Shanxi Normal University; Shanxi Linfen P. R. China
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Giebułtowicz J, Kojro G, Buś-Kwaśnik K, Rudzki PJ, Marszałek R, Leś A, Wroczyński P. Cloud-point extraction is compatible with liquid chromatography coupled to electrospray ionization mass spectrometry for the determination of bisoprolol in human plasma. J Chromatogr A 2015; 1423:39-46. [DOI: 10.1016/j.chroma.2015.10.076] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 10/21/2015] [Accepted: 10/25/2015] [Indexed: 11/28/2022]
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Melnyk A, Namieśnik J, Wolska L. Theory and recent applications of coacervate-based extraction techniques. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.03.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Moreda-Piñeiro J, Moreda-Piñeiro A. Recent advances in combining microextraction techniques for sample pre-treatment. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.02.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Wu H, Gao N, Zhang L, Li Y, Shi Y, Du L. Automated Magnetic Solid-Phase Extraction for Synthetic Food Colorant Determination. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0219-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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