1
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Zhang Y, Fu R, Lu Q, Ren T, Guo X, Di X. Switchable hydrophilicity solvent for extraction of pollutants in food and environmental samples: A review. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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2
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Abdullahi AB, Ismail S, Alshana U, Ertaş N. Smartphone digital image colorimetry combined with deep eutectic solvent-liquid–liquid microextraction for the determination of cobalt in milk and dairy products. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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3
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Ullah N, Haseeb A, Tuzen M. Application of Recently used Green Solvents in Sample Preparation Techniques: A Comprehensive Review of Existing Trends, Challenges, and Future Opportunities. Crit Rev Anal Chem 2023:1-20. [PMID: 37067946 DOI: 10.1080/10408347.2023.2197495] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Green solvents (GSs) has gained significant attention in recent years due to their potential as safer and more sustainable alternatives to traditional organic solvents. Solvents are used in a wide range of applications, from industrial processes to everyday products. Solvent emissions and losses can have a significant impact on the environment and human health, which is why many initiatives are being undertaken to get rid of or switch to eco-friendly alternatives. A key area of green chemistry that led to the concept of "green" solvents is the development of alternative solvents that are less toxic and more environmentally friendly than traditional organic solvents. The advantages of using green solvents over conventional ones are their environmental friendliness, biocompatibility, biodegradability, and simplicity of preparation. Different sample preparation techniques have successfully utilized green solvents to offer a sustainable separation media for the extraction of a variety of inorganic and organic compounds which are crucial for research in environmental samples. Recent developments in green analytical chemistry (GAC) have focused on how to prepare and use samples using environmentally sustainable solvents. The current study covers the advance and currently used green solvents with an emphasis on environmentally friendly sample preparation methods. This review aims to briefly summarize the current state of knowledge about the use of green solvents particularly ionic liquids, deep eutectic solvents and switchable solvents (SSs) with the perspective of GAC in sample preparation methods.
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Affiliation(s)
- Naeem Ullah
- Faculty of Science and Arts, Chemistry Department, Tokat Gaziosmanpasa University, Tokat, Turkey
- Department of Chemistry, University of Turbat, Balochistan, Pakistan
| | - Abdul Haseeb
- Department of Engineering and Chemical Science, Karlstad University, Karlstad, Sweden
- National Institute of Oceanography, Karachi, Pakistan
| | - Mustafa Tuzen
- Faculty of Science and Arts, Chemistry Department, Tokat Gaziosmanpasa University, Tokat, Turkey
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Mohseni SF, Manoochehri M, Afshar Taromi F. A novel poly(2-mercaptobenzothiazole) coated magnetic nanoadsorbent derived from ZIF-8 for preconcentration/determination of palladium and silver. RSC Adv 2022; 12:35849-35859. [PMID: 36545095 PMCID: PMC9752480 DOI: 10.1039/d2ra06193g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 12/02/2022] [Indexed: 12/23/2022] Open
Abstract
Herein, a novel poly(2-mercaptobenzothiazole) coated magnetic nanoadsorbent derived from zeolitic-imidazole framework-8 (ZIF-8) was synthesized and then employed for the extraction/preconcentration of trace amounts of palladium and silver in various real matrixes. In this way, magnetite was fabricated first, and then functionalized with tetraethyl orthosilicate. After that, the synthesized magnetite@silica was coated with the ZIF-8 to obtain magnetic ZIF-8. Afterward, the magnetic ZIF-8 was pyrolyzed under the protection of a nitrogen atmosphere to get a magnetic carbon nanoadsorbent. Finally, the magnetic carbon was functionalized with a conductive polymer (poly-2-mercaptobenzothiazole). Fabrication of the nanoadsorbent was affirmed with scanning and transmission electron microscopies, elemental analysis, X-ray diffraction, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. The method is linear from 0.25 to 200 μg L-1 for silver, and from 0.5 to 250 μg L-1 for palladium. The detection limits are 0.07 and 0.15 μg L-1 for Ag and Pd, respectively. The precision was evaluated at three concentration levels (1, 75, 200 μg L-1, n = 5) and all the relative standard deviation (RSD) values were lower than 10.3%. In the end, the new method was utilized for the preconcentration/determination of trace amounts of palladium and silver in various real matrixes, satisfactorily (relative recovery: 86% to 104%; RSD%: 4.0-9.5%).
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Affiliation(s)
- Seyedeh Fatemeh Mohseni
- Department of Chemistry, Central Tehran Branch, Islamic Azad University1467686831TehranIran+98 2188385798+98 9127242698
| | - Mahboobeh Manoochehri
- Department of Chemistry, Central Tehran Branch, Islamic Azad University1467686831TehranIran+98 2188385798+98 9127242698
| | - Faramarz Afshar Taromi
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology424 Hafez Avenue, P. O. Box: 15875-4413TehranIran
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Magnetic effervescent tablet-assisted ionic liquid dispersive liquid–liquid microextraction employing the response surface method for the preconcentration of basic pharmaceutical drugs: Characterization, method development, and green profile assessment. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Safaei S, Atazadeh R, Mogaddam MRA. Combination of microwave-assisted solvent extraction and effervescence-assisted deep eutectic solvent-based in-syringe dispersive liquid-liquid microextraction and its application in the extraction of triazine pesticides from apple samples. J Sep Sci 2022; 45:3735-3744. [PMID: 35932475 DOI: 10.1002/jssc.202200236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/30/2022] [Accepted: 08/02/2022] [Indexed: 11/06/2022]
Abstract
In the current study, combination of microwave-assisted solvent extraction combined with effervescence-assisted deep eutectic solvent-based in-syringe dispersive liquid-liquid microextraction has been developed as a new sample pretreatment method. The offered method was used for the extraction of five triazine pesticides (atrazine, propazine, cyanazine, ametryn, and simazine) from apple samples before their determination by gas chromatography-flame ionization detection. For this purpose, briefly, the apple sample was contacted with a suitable acidified extraction solvent and the mixture was exposed to microwave irradiations. Then, the supernatant was taken and mixed with a few microliters of a low-density deep eutectic solvent. The supernatant phase containing the extracted analytes was injected into sodium bicarbonate solution filled into a syringe. Consequently, the effervescence reaction occurs and the analytes were extracted into the fine droplets of extractant dispersed throughout the solution. Afterward, an aliquot of this phase was analyzed by the chromatographic system. Satisfactory outcomes including high enrichment factors (228-261) and extraction recoveries (67-87%), good repeatability (relative standard deviations equal or less than 3.2 and 5.3% for intra- and inter day precisions), and low limits of detection (0.4-0.7 ng g-1 ) and quantification (1.4-2.3 ng g-1 ) were acquired under the best experimental situations. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Sepideh Safaei
- Department of Food Science and Technology, Sofian Branch, Islamic Azad University, Sofian, Iran
| | - Ramin Atazadeh
- Department of Food Science and Technology, Sofian Branch, Islamic Azad University, Sofian, Iran
| | - Mohammad Reza Afshar Mogaddam
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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7
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Altunay N, Tuzen M, Lanjwani MF, Mogaddam MRA. Optimization of a rapid and sensitive ultrasound-assisted liquid–liquid microextraction using switchable hydrophilicity solvent for extraction of β-carotene in fruit juices and vegetables. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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8
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Xue H, Jia L, Jiang H, Qin S, Yang Y, Wu J, Jing X. A successive homogeneous liquid-liquid microextraction based on solidification of switchable hydrophilicity solvents and ionic liquids for the detection of pyrethroids and cadmium in drinks. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Abd El-Fattah W, Al-Farraj ES, Hamadi NB, Alharbi A, Shahat A. Functionalized MOF as a Sensitive Spectroscopic Probe for Hg 2+, Co 2+, and Al 3+ Ions Detection in Aqueous Media. ACS OMEGA 2022; 7:17483-17491. [PMID: 35647427 PMCID: PMC9134411 DOI: 10.1021/acsomega.2c02021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
A modified metal-organic framework (MOF) named Al-MIL-53-N=SA-Br was synthesized via a Schiff-base reaction between the MOFs (Al-MIL-53-NH2) and 5-bromo salicylaldehyde. The robust functionalized Al-MIL-53-N=SA-Br was used as a novel spectrophotometric sensor for detecting Hg2+, Co2+, and Al3+ ions. In a wide range of concentrations, the absorption spectral intensity of Al-MIL-53-N=SA-Br increased linearly upon increasing the concentration of Hg2+, Co2+, and Al3+ ions. The limit of detection (LOD) of the proposed Al-MIL-53-N=SA-Br sensor reached 1.52 ppm of Hg2+ ion (7.56 × 10-9 M). Therefore, this study introduces a novel ratiometric Hg2+, Co2+, and Al3+ ions chemosensor. Simple treatment using thiourea or ethylenediaminetetraacetic acid can remove the metal ions from the used sensor and use it many times with a high efficiency. In addition, the Al-MIL-53-N=SA-Br sensor has a high adsorption capacity for these metal ions. The design of the robust Al-MIL-53-N=SA-Br sensor provided high stability, reproducibility, selectivity, high sensitivity, and a facile sensing design. Furthermore, the good absorption spectral stability of Al-MIL-53-N=SA-Br in aqueous media, the broad linear in sensing, and the low LOD of the Hg2+, Co2+, and Al3+ ions show its high potential in determining these ions in real water.
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Affiliation(s)
- Wesam Abd El-Fattah
- Chemistry
Department, College of Science, IMSIU (Imam
Mohammad Ibn Saud Islamic University), Riyadh 11623, Saudi Arabia
- Department
of Chemistry, Faculty of Science, Port-Said
University, Port-Said 42526, Egypt
| | - Eida S. Al-Farraj
- Chemistry
Department, College of Science, IMSIU (Imam
Mohammad Ibn Saud Islamic University), Riyadh 11623, Saudi Arabia
| | - Naoufel Ben Hamadi
- Chemistry
Department, College of Science, IMSIU (Imam
Mohammad Ibn Saud Islamic University), Riyadh 11623, Saudi Arabia
| | - Ahmed Alharbi
- Department
of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Ahmed Shahat
- Chemistry
Department, Faculty of Science, Suez University, Suez 43518, Egypt
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Santos LB, Assis RDSD, Silva UN, Lemos VA. Switchable-hydrophilicity solvent-based liquid-phase microextraction in an on-line system: Cobalt determination in food and water samples. Talanta 2022; 238:123038. [PMID: 34801895 DOI: 10.1016/j.talanta.2021.123038] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 01/03/2023]
Abstract
An on-line system employing switchable-hydrophilicity solvent-based liquid-phase microextraction (SHS-LPME) is described in this work. The method is based on the preconcentration of the species formed between cobalt and the reagent 1-nitroso-2-naphthol (NN), with subsequent detection by digital image colorimetry. The system's operation begins with the on-line mixture of sample, switchable solvent, and an alkaline agent in a reaction coil. Then the mixture is transported to an extraction chamber. The introduction of a proton donor leads to the passage of the solvent to its hydrophobic form, which allows phase separation. The rich phase is then directed to a glass tube, where detection is performed. Octanoic acid, sodium carbonate, and sulfuric acid were used as the extraction solvent, the alkaline agent, and the proton donor, respectively. Under optimized conditions, the method presented a detection limit of 0.8 μg L-1 and an enrichment factor of 41. The precision obtained was 4.8% (20 μg L-1). The accuracy of the method was tested by the analysis of Tomato Leaves certified reference material (NIST 1573a). The method was applied to the determination of cobalt in food, dietary supplements, and water samples. The method is presented as a green alternative and very accessible to the determination of cobalt in the analyzed samples.
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Affiliation(s)
- Luana Bastos Santos
- Universidade Estadual do Sudoeste da Bahia, Programa de Pós-Graduação em Química, Campus de Jequié, Jequié, Bahia, 45206-510, Brazil; Universidade Federal da Bahia, Programa de Pós-Graduação em Química, Campus Universitário de Ondina, Salvador, Bahia, 40170-280, Brazil
| | - Rosivan Dos Santos de Assis
- Universidade Estadual do Sudoeste da Bahia, Programa de Pós-Graduação em Química, Campus de Jequié, Jequié, Bahia, 45206-510, Brazil; Universidade Federal da Bahia, Programa de Pós-Graduação em Química, Campus Universitário de Ondina, Salvador, Bahia, 40170-280, Brazil
| | - Uneliton Neves Silva
- Universidade Estadual do Sudoeste da Bahia, Programa de Pós-Graduação em Química, Campus de Jequié, Jequié, Bahia, 45206-510, Brazil
| | - Valfredo Azevedo Lemos
- Universidade Estadual do Sudoeste da Bahia, Programa de Pós-Graduação em Química, Campus de Jequié, Jequié, Bahia, 45206-510, Brazil; Universidade Federal da Bahia, Programa de Pós-Graduação em Química, Campus Universitário de Ondina, Salvador, Bahia, 40170-280, Brazil.
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11
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Han W, Yang Y, Hang N, Zhao W, Lu P, Li S. Switchable hydrophilic solvent-based dispersive liquid-liquid microextraction coupled with high-performance liquid chromatography for the determination of four types of sulfonylurea herbicides in soils. J Sep Sci 2022; 45:1252-1261. [PMID: 35001514 DOI: 10.1002/jssc.202100703] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/02/2021] [Accepted: 01/05/2022] [Indexed: 12/28/2022]
Abstract
In this study, switchable hydrophilic solvent-based dispersive liquid-liquid microextraction coupled with high-performance liquid chromatography was developed for the determination of four sulfonylurea herbicides in soils. For the first time, the sample pretreatment was achieved due to the similar acid-base status of sulfonylurea herbicides and switchable hydrophilic solvent. In the extraction step, sulfonylurea herbicides were extracted as anions and transferred to an alkaline solution with switchable hydrophilic solvent anions. In the concentration step, two types of anions were transformed to their molecular state after the aqueous solution was acidified. In addition, the dispersion and microextraction processes were completed efficiently with the simultaneous formation of analytes and extractants. The factors affecting the extraction performance were optimized. Under the optimized conditions, good linearity was observed for each herbicide with correlation coefficients ranging from 0.9952 to 0.9978. The limits of detection were in the range of 0.1-0.2 μg/g. Moreover, the relative recoveries of the sulfonylurea herbicides at spiking levels of 0.5, 1, and 1.5 μg/g in soil samples were between 75 and 111% (relative standard deviations: 0.4-11.4%). Therefore, the proposed method in this study could be successfully applied to the analysis of four types of sulfonylurea herbicides in soil samples.
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Affiliation(s)
- Wentao Han
- Beijing Key Laboratory for Forest Pest Control, College of Forestry, Beijing Forestry University, Beijing, P. R. China
| | - Yang Yang
- Beijing Key Laboratory for Forest Pest Control, College of Forestry, Beijing Forestry University, Beijing, P. R. China
| | - Na Hang
- Beijing Key Laboratory for Forest Pest Control, College of Forestry, Beijing Forestry University, Beijing, P. R. China
| | - Wanning Zhao
- Beijing Key Laboratory for Forest Pest Control, College of Forestry, Beijing Forestry University, Beijing, P. R. China
| | - Pengfei Lu
- Beijing Key Laboratory for Forest Pest Control, College of Forestry, Beijing Forestry University, Beijing, P. R. China
| | - Songqing Li
- Beijing Key Laboratory for Forest Pest Control, College of Forestry, Beijing Forestry University, Beijing, P. R. China
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Rajendran S, Loh SH, Ariffin MM, Khalik WMAWM. CO2-Effervescence in Liquid Phase Microextraction for the Determination of Micropollutants in Environmental Water: a Review. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821120091] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Borahan T, Karlıdağ NE, Yağcı Ö, Bakırdere S. Effervescence-assisted liquid phase microextraction prior to slotted quartz tube-flame atomic absorption spectrometry for cadmium determination in domestic wastewater samples. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01796-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Shi Z, Li X, Tian Y, Fan Y, Liu J, Zhang H. Hydrophobicity-switchable deep eutectic solvent-based effervescence-assisted dispersive liquid-liquid microextraction with solidification of floating droplets for HPLC determination of anthraquinones in fried Cassiae semen tea infusions. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4739-4746. [PMID: 34558572 DOI: 10.1039/d1ay01288f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this paper, a hydrophobicity-switchable deep eutectic solvent was evaluated for the first time as an efficient extractant in the effervescence-assisted dispersive liquid-liquid microextraction method combined with the solidification of floating droplets for HPLC determination of anthraquinones in fried Cassiae semen tea infusions. Prepared from choline chloride and octanoic acid, the deep eutectic solvent could be switched between hydrophobic and hydrophilic forms by pH adjustment. The dispersion of the extractant was assisted by in situ CO2 produced from the effervescence reaction between H2SO4 and Na2CO3 without using any organic solvent or auxiliary equipment. Owing to the low melting/freezing point and low density compared with water, the extractant was solidified in an ice bath for the convenience of complete separation with the sample matrix. Some important parameters, such as species, molar ratio and volume of deep eutectic solvent, species and volume of effervescent agents were optimized to achieve the best extraction efficiency. Under the optimal conditions, extraction recoveries were obtained for four anthraquinones in the range of 91.1% to 111.9%. Relative standard deviations for intraday and interday precision were less than 3.3% and 4.0%, respectively. Greenness assessment demonstrated that the proposed method was greener than other reported methods for the determination of anthraquinones.
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Affiliation(s)
- Zhihong Shi
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Xinye Li
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Yuehong Tian
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Yuanyuan Fan
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Junjie Liu
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
| | - Hongyi Zhang
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.
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15
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Simultaneous Determination of Azaperone and Azaperol in Swine Adipose Samples Using Switchable Fatty Acid–Based CO2-Effervescence–Ameliorated Emulsification Microextraction. FOOD ANAL METHOD 2021. [DOI: 10.1007/s12161-021-02117-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Cyclodextrin-based dispersive liquid-liquid microextraction for the determination of fungicides in water, juice, and vinegar samples via HPLC. Food Chem 2021; 367:130664. [PMID: 34343804 DOI: 10.1016/j.foodchem.2021.130664] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/05/2021] [Accepted: 07/19/2021] [Indexed: 12/22/2022]
Abstract
Cyclodextrin-based dispersive liquid-liquid microextraction (CD-DLLME) was developed for the determination of triazole and strobilurin fungicides in water, juice, and vinegar samples using high-performance liquid chromatography-diode-array detection (HPLC-DAD). Undecanol, which is a green solvent, was selected as the extraction solvent. A cyclodextrin aqueous solution was chosen as the dispersion solvent and demulsifier to avoid the use of a toxic dispersion solvent and eliminate the centrifugation step. Dispersion and phase separation were completed within 1 and 60 s, respectively. The linear range of this method was 1 to 100 µg L-1. The limits of detection were 0.3 μg L-1 along with the preconcentration factor of 133 and enrichment factor of 124. The recovery was 83.2% to 103.2%. This pretreatment method was fast, simple, and environmentally friendly and was successfully applied to the analysis of triazole and strobilurin fungicide residues in water, juice, and vinegar samples.
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Al-Saidi HM, Alharthi SS. Efficiency enhancement of the spectrophotometric estimation of cobalt in waters and pharmaceutical preparations using dispersive liquid-liquid microextraction and microcells with long optical paths. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 253:119552. [PMID: 33621935 DOI: 10.1016/j.saa.2021.119552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 01/09/2021] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
In this paper, dispersive liquid-liquid microextraction (DLLME), long optical path microcells, and a selective chromogenic reagent were employed to improve the analytical efficiency of cobalt determination by spectrophotometry. The methodology proposed in the present study is based upon the microextraction of a cobalt(II) complex with 1-[4-[(2-hydroxynaphthalen-1-yl)methylideneamino] phenyl]ethanone (HNE) by DLLME and measurement of the absorbance of the sedimented phase using a microcell with an optical path length of 50 mm (Microcell-50). DLLME was performed using a binary mixture containing 900 μL of methanol as a dispersing solvent and 400 μL of CHCl3 (extraction solvent) at pH 6-8 adjusted by a mixture of HCl and NaOH. The electronic spectrum of the dark brown complex recorded in the sedimented phase using Microcell-50 shows a well-defined peak at λmax 324 ± 3 nm with a molar absorptivity of 1.08 × 106 M-1 cm-1. Cobalt was monitored at a detection limit (LOD) of 0.08 μg L-1 and in the linear concentration range of 0.45-10 μg L-1, while the limit of quantitation (LOQ), relative standard deviation (RSD), and the enhancement factor (EF) were 0.264, 1.6 μgL-1, and 223, respectively. Our method was evaluated by determining cobalt in certified reference materials and experimental samples, and the results were compared with ICP-MS measurements. Moreover, the chemical structure of the [Co(C38H28O2N)2] complex was suggested through using different characterization techniques such as Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), thermal analysis, and powder X-ray diffraction.
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Affiliation(s)
- Hamed M Al-Saidi
- Department of Chemistry, University College in Al - Jamoum, Umm Al-Qura University, 21955 Makkah, Saudi Arabia.
| | - Salman S Alharthi
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
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Wang Y, Zhang Q, Chen S, Cheng L, Jing X, Wang X, Guan S, Song W, Rao Q. Determination of Polybrominated Diphenyl Ethers in Water Samples Using Effervescent-Assisted Dispersive Liquid-Liquid Icroextraction with Solidification of the Aqueous Phase. Molecules 2021; 26:molecules26051376. [PMID: 33806482 PMCID: PMC7961388 DOI: 10.3390/molecules26051376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/22/2021] [Accepted: 02/26/2021] [Indexed: 01/20/2023] Open
Abstract
An effective and sensitive method is necessary for the determination of polybrominated diphenyl ethers (PBDEs) pollutants in water. In this study, effervescent-assisted dispersive liquid-liquid microextraction with solidification of the aqueous phase (EA-DLLME-SAP), followed by Gas Chromatography-Tandem Mass Spectrometry (GC-MS-MS) quantitative analysis, was established for the preconcentration and determination of PBDEs in real environmental water samples. 1,1,2,2-Tetrachloroethane was used as the extractant and directly dispersed into the water phase of the aqueous samples with the aid of a large number of carbon dioxide bubbles generated via the acid-base reaction of acetic acid and sodium bicarbonate, which did not require the use of a dispersant during the extraction process. The key factors affecting the extraction recovery were optimized, and an internal standard was used for quantitative analysis, which gave good linearity ranges of 1-100 ng·L-1 (BDEs 28, 47, 99, and 100), 2-200 ng·L-1 (BDEs 153, 154, and 183) and 5-500 ng·L-1 (BDE 209) with limits of quantification in the range of 1.0-5.0 ng·L-1. The accuracy was verified with relative standard deviations < 8.5% observed in tap, lake, river and reservoir water samples with relative recoveries ranging from 67.2 to 102.6%. The presented method contributes to the determination of PBDEs in environmental water samples.
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Affiliation(s)
- Yue Wang
- College of Food Sciences, Shanghai Ocean University, Shanghai 201306, China;
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
| | - Qicai Zhang
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
| | - Shanshan Chen
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
| | - Lin Cheng
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
| | - Xu Jing
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, Jinzhong 030801, China;
| | - Xianli Wang
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
| | - Shuhui Guan
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
| | - Weiguo Song
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
- Correspondence: (W.S.); (Q.R.)
| | - Qinxiong Rao
- Institute for Agro-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai 201403, China; (Q.Z.); (S.C.); (L.C.); (X.W.); (S.G.)
- Correspondence: (W.S.); (Q.R.)
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Mohanna Ezati, Moinfar S, Mohammadi S, Khayatian G. A Continuous Sample Drop Flow-Based Microextraction Method for Spectrophotometric Determination of Cobalt with 1-(2-Pyridylazo)-2-Naphthol in Water Samples. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821020076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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20
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Accurate and sensitive determination of cobalt in urine samples using deep eutectic solvent-assisted magnetic colloidal gel-based dispersive solid phase extraction prior to slotted quartz tube equipped flame atomic absorption spectrometry. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01542-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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21
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Borahan T, Zaman BT, Arıca Polat BS, Bakırdere EG, Bakırdere S. An accurate and sensitive effervescence-assisted liquid phase microextraction method for the determination of cobalt after a Schiff base complexation by slotted quartz tube-flame atomic absorption spectrophotometry in urine samples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:703-711. [PMID: 33480365 DOI: 10.1039/d0ay02264k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, an accurate analytical method development for cobalt determination in urine samples was described. The method is based on the mass transfer of the target analytes to the organic phase from the aqueous phase by the dispersing extractant throughout the solution with the aid of CO2 bubbles prior to sample measurement by using a slotted quartz tube flame atomic absorption spectrophotometer. An extractor (1-decanol) dropped effervescent tablet (anhydrous sodium carbonate and sodium dihydrogen phosphate dihydrate mixture) was used in order to separate/preconcentrate cobalt after complexation of cobalt ions in aqueous solution with the Schiff base ligand. The parameters affecting the extraction output such as complexing conditions (pH, ligand concentration, and volume) and extraction conditions (extraction solvent type and volume, extraction temperature, and heating duration, NaOH volume and mixing period) were optimized to lower the detection limit. The limit of detection and quantification values under optimized experimental and instrumental conditions were determined as 3.7 μg L-1 and 12 μg L-1, respectively with high linearity with respect to the dynamic range between 15 and 300 μg L-1. The enhancement factor obtained with the developed method was calculated as 83 fold. The pretreatment process was applied to urine samples in order to test the convenience of the developed method in urine samples for the determination of cobalt at low levels. The high percentage recovery results of 96-97% for four different concentrations of spiked urine samples indicated the proposed method's sufficient sensitivity for analyte determination in such a complex matrix.
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Affiliation(s)
- Tülay Borahan
- Yıldız Technical University, Chemistry Department, 34210, İstanbul, Turkey.
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22
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Sayqal A, Ahmed SA, Hussein EM, Kassem MA. Development a spectrofluorometric micellar supported encapsulated method for micro determination of silver ion using new 2,6-disubstituted pyridine derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 242:118711. [PMID: 32738759 DOI: 10.1016/j.saa.2020.118711] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/03/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Herein, the presented manuscript provides for an extensive spectrofluorimetric method for micro determination of silver ion. This established method based on the use of the three synthesized 2,6-disubstituted pyridine derivatives (R1, R2 and R3) through exploiting their high fluorescence emission property. A noticeable effect on the fluorescence emission of the reagents after chelation with Ag (I) was monitored. Its noteworthy that the sensitivity and stability of this method was increased by using micellar medium. After chelation with Ag(I), the fluorescence emission of the ligands R1 and R2 were effectively quenched in a regular manner by increasing Ag(I) concentration. In contrast, an increase of the fluorescence intensity for reagent R3 after addition of Ag (I) was observed. The solvatochromism for all reagents under investigation was examined in different solvent. Furthermore, the chelation between Ag(I) and the and designed pyridine reagents was assessed spectrophotometrically. The optimum conditions for the most stable complexes which give a high signal difference were explored and well-determined. The linear range for determination of silver ion were determined and found to be 0.18-1.16, 0.06-0.59 and 0.18-1.43 μg mL-1 for R1, R2 and R3, respectively. The statistical analytical parameters such as LOD, LOQ, SD of slope, SD of intercept and RDS were calculated. In addition, the developed methods were efficaciously applied for determination of Ag(I) in some water samples. These selective complexation methods found to be in good precision compared to official and reported method as revealed F-test.
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Affiliation(s)
- Ali Sayqal
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
| | - Saleh A Ahmed
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia; Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt.
| | - Essam M Hussein
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia; Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt
| | - Mohammed A Kassem
- Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, 21955 Makkah, Saudi Arabia; Chemistry Department, Faculty of Science, Benha University, 13518 Benha, Egypt.
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Bakırdere EG, Akarçay NA, Zaman BT, Bakırdere S. A Simultaneous Dispersive Liquid–Liquid Microextraction-complexation Method to Determine Trace Cobalt in Chamomile Tea Extract Prior to Slotted Quartz Tube Flame Atomic Absorption Spectrometry. CHEM LETT 2020. [DOI: 10.1246/cl.200260] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Emine Gülhan Bakırdere
- Department of Science Education, Faculty of Education, Yıldız Technical University, 34210, İstanbul, Turkey
| | - Nur Azize Akarçay
- Department of Science Education, Faculty of Education, Yıldız Technical University, 34210, İstanbul, Turkey
| | - Buse Tuğba Zaman
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34210, İstanbul, Turkey
| | - Sezgin Bakırdere
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34210, İstanbul, Turkey
- TÜBA, Turkish Academy of Sciences, Cankaya, 06690, Ankara, Turkey
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25
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Jia L, Huang X, Zhao W, Wang H, Jing X. An effervescence tablet-assisted microextraction based on the solidification of deep eutectic solvents for the determination of strobilurin fungicides in water, juice, wine, and vinegar samples by HPLC. Food Chem 2020; 317:126424. [DOI: 10.1016/j.foodchem.2020.126424] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/28/2020] [Accepted: 02/16/2020] [Indexed: 12/26/2022]
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26
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Al-Nidawi M, Alshana U, Caleb J, Hassan M, Rahman ZU, Hanoğlu DY, Çalış İ. Switchable-hydrophilicity solvent liquid-liquid microextraction versus dispersive liquid-liquid microextraction prior to HPLC-UV for the determination and isolation of piperine from Piper nigrum L. J Sep Sci 2020; 43:3053-3060. [PMID: 32419309 DOI: 10.1002/jssc.202000152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 05/04/2020] [Accepted: 05/09/2020] [Indexed: 11/07/2022]
Abstract
Switchable-hydrophilicity solvent liquid-liquid microextraction and dispersive liquid-liquid microextraction were compared for the extraction of piperine from Piper nigrum L. prior to its analysis by using high-performance liquid chromatography with UV detection. Under optimum conditions, limits of detection and quantitation were found as 0.2-0.6 and 0.7-2.0 μg/mg with the two methods, respectively. Calibration graphs showed good linearity with coefficients of determination (R2 ) higher than 0.9962 and percentage relative standard deviations lower than 6.8%. Both methods were efficiently used for the extraction of piperine from black and white pepper samples from different origins and percentage relative recoveries ranged between 90.0 and 106.0%. The results showed that switchable-hydrophilicity solvent liquid-liquid microextraction is a better alternative to dispersive liquid-liquid microextraction for the routine analysis of piperine in food samples. A novel scaled-up dispersive liquid-liquid microextraction method was also proposed for the isolation of piperine providing a yield of 102.9 ± 4.9% and purity higher than 98.0% as revealed by NMR spectroscopy.
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Affiliation(s)
- Mais Al-Nidawi
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
| | - Usama Alshana
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
| | - Jude Caleb
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
| | - Malek Hassan
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
| | - Zia Ur Rahman
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
| | - Duygu Yiğit Hanoğlu
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
| | - İhsan Çalış
- Department of Pharmacognosy, Faculty of Pharmacy, Near East University, 99138 Nicosia, TRNC, Mersin 10, Turkey
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Ghasemi A, Jamali MR, Es’haghi Z. Ultrasound Assisted Ferrofluid Dispersive Liquid Phase Microextraction Coupled with Flame Atomic Absorption Spectroscopy for the Determination of Cobalt in Environmental Samples. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1765790] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Amin Ghasemi
- Department of Chemistry, Payame Noor University, Tehran, Iran
| | | | - Zarrin Es’haghi
- Department of Chemistry, Payame Noor University, Tehran, Iran
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28
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Tekin Z, Unutkan T, Erulaş F, Bakırdere EG, Bakırdere S. A green, accurate and sensitive analytical method based on vortex assisted deep eutectic solvent-liquid phase microextraction for the determination of cobalt by slotted quartz tube flame atomic absorption spectrometry. Food Chem 2020; 310:125825. [DOI: 10.1016/j.foodchem.2019.125825] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 10/18/2019] [Accepted: 10/28/2019] [Indexed: 12/20/2022]
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29
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Piao H, Jiang Y, Qin Z, Tao S, Ma P, Sun Y, Wang X, Song D. Development of a novel acidic task-specific ionic liquid-based effervescence-assisted microextraction method for determination of triazine herbicides in tea beverage. Talanta 2020; 208:120414. [DOI: 10.1016/j.talanta.2019.120414] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 09/28/2019] [Accepted: 09/30/2019] [Indexed: 12/29/2022]
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30
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Awual MR, Hasan MM, Islam A, Asiri AM, Rahman MM. Optimization of an innovative composited material for effective monitoring and removal of cobalt(II) from wastewater. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112035] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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31
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Mendil D, Uluozlu OD, Tuzen M, Soylak M. Multi-element determination in some foods and beverages using silica gel modified with 1-phenylthiosemicarbazide. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1667-1676. [DOI: 10.1080/19440049.2019.1662954] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Durali Mendil
- Chemistry Department, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | | | - Mustafa Tuzen
- Chemistry Department, Tokat Gaziosmanpaşa University, Tokat, Turkey
| | - Mustafa Soylak
- Chemistry Department, Erciyes University, Kayseri, Turkey
- Technology Research & Application Center (TAUM), Erciyes University, Kayseri, Turkey
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32
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Switchable fatty acid based CO2-effervescence ameliorated emulsification microextraction prior to high performance liquid chromatography for efficient analyses of toxic azo dyes in foodstuffs. Food Chem 2019; 286:185-190. [DOI: 10.1016/j.foodchem.2019.01.197] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 01/04/2023]
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33
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Sorouraddin SM, Farajzadeh MA, Najafpour Qarajeh H. Phthalic acid as complexing agent and co-disperser for analysis of zinc and cadmium at trace levels from high volumes of sample on the base of an effervescence-assisted dispersive liquid-liquid microextraction. Microchem J 2019. [DOI: 10.1016/j.microc.2019.04.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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34
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Naeemullah, Tuzen M. A new robust, deep eutectic-based floating organic droplets microextraction method for determination of lead in a portable syringe system directly couple with FAAS. Talanta 2019; 196:71-77. [DOI: 10.1016/j.talanta.2018.12.027] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 12/09/2018] [Accepted: 12/11/2018] [Indexed: 01/02/2023]
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35
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Elmizadeh H, Soleimani M, Faridbod F, Bardajee G. Fabrication of a nanomaterial-based fluorescence sensor constructed from ligand capped CdTe quantum dots for ultrasensitive and rapid detection of silver ions in aqueous samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 211:291-298. [PMID: 30562702 DOI: 10.1016/j.saa.2018.12.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 12/02/2018] [Accepted: 12/08/2018] [Indexed: 06/09/2023]
Abstract
In this study, CdTe QDs were prepared in aqueous medium and then capped with a synthetic heterocycle ligand (CdTe/L QDs) via surface modification method. Characterization of synthesized CdTe/L QDs was carried out through various analytical techniques including fluorescence spectroscopy, transmission electron microscopy (TEM), UV-Vis spectrophotometry, thermo-gravimetric (TG) analysis and Fourier transform infrared (FTIR). The fluorescence intensity of the CdTe/L QDs at 520 nm (excitation at 380 nm) was selectively quenched in the presence of trace amounts of silver ions. CdTe/L QDs were utilized as an ultrasensitive and selective fluorescent sensor for determination of trace concentrations of silver ions with a detection limit of 6.12 ± 0.11 × 10-10 mol L-1 and a linear range of 2.04 ± 0.10 × 10-9 mol L-1-3.63 ± 0.12 × 10-7 mol L-1. The fabricated optical sensor was also used for the measurement of silver ions in real water samples which yielded satisfactory analytical results. These results were also evaluated with inductively coupled plasma emission spectroscopy (ICP-OES). This study shows that CdTe/L QDs could have potential applications in selective and sensitive analysis of different water samples for detection of silver ions.
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Affiliation(s)
- Hamideh Elmizadeh
- Department of Chemistry, Faculty of Science, Imam Khomeini International University (IKIU), P.O.BOX: 288, Qazvin, Iran
| | - Majid Soleimani
- Department of Chemistry, Faculty of Science, Imam Khomeini International University (IKIU), P.O.BOX: 288, Qazvin, Iran.
| | - Farnoush Faridbod
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
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Gao M, Wang J, Zhang X, Dahlgren RA, Ru S, Wang X. Integrated disperser freezing purification with extraction using fatty acid-based solidification of floating organic-droplet (IDFP-EFA-SFO) for triclosan and methyltriclosan determination in seawater, sediment and seafood. MARINE POLLUTION BULLETIN 2018; 137:677-687. [PMID: 30503483 DOI: 10.1016/j.marpolbul.2018.09.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 09/12/2018] [Accepted: 09/15/2018] [Indexed: 06/09/2023]
Abstract
A microextraction method for the determination of triclosan and methyltriclosan in marine environmental samples was developed. The disperser was first serves as a preliminary extractant for analytes, then as a frozen solvent to remove impurities at -20 °C, and finally as a disperser agent in the microextraction procedure. With the extractants solidified and float on the surface of the aqueous phase at low temperature, a separation was achieved to avoided use of specialized laboratory instruments. The method was optimized using Plackett-Burman design and central composite design as follows: 146 μL octanoic acid as extractant, 793 μL acetoneas disperser, 3.0 min centrifugation and 1.1 min vortex time. The limits of detection were 0.022-0.060 μg L-1 or μg kg-1 and recoveries were 83.3-103.5% for TCS and MTCS in seawater, sediments and seafood. The method has excellent prospects for sample pre-treatment and trace-level analysis of triclosan and methyltriclosan in marine environmental samples.
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Affiliation(s)
- Ming Gao
- College of Marine Life, Ocean University of China, Qingdao, Shandong 266000, China; Key Laboratory of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jun Wang
- College of Marine Life, Ocean University of China, Qingdao, Shandong 266000, China
| | - Xiaona Zhang
- College of Marine Life, Ocean University of China, Qingdao, Shandong 266000, China
| | - Randy A Dahlgren
- Key Laboratory of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Department of Land, Air and Water Resources, University of California, Davis, CA 95616, USA
| | - Shaoguo Ru
- College of Marine Life, Ocean University of China, Qingdao, Shandong 266000, China.
| | - Xuedong Wang
- Key Laboratory of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China.
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