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Smirnova SV, Mikheev IV, Apyari VV. Aqueous two-phase system based on benzethonium chloride and sodium dihexyl sulfosuccinate for extraction and ICP-OES determination of heavy metals. Talanta 2024; 269:125504. [PMID: 38056418 DOI: 10.1016/j.talanta.2023.125504] [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: 08/01/2023] [Revised: 11/25/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
An aqueous two-phase system (ATPS) based on benzethonium chloride (BztCl) and sodium dihexyl sulfosuccinate (NaDHSS) was proposed for the first time for liquid-liquid microextraction of Cd(II), Co(II), Cu(II), Mn(II), Ni(II), and Pb(II) followed by ICP-OES determination. The mixture of cationic and anionic surfactants, BztCl and NaDHSS, showed liquid-liquid phase separation at the molar ratio of 1:1, and the total surfactant concentration of 0.01-0.2 mol L-1 forming ATPS that was investigated in the extraction process. The extraction efficiency for Cd(II), Co(II), Mn(II), Ni(II), and Pb(II) was nearly 100 %, and for Cu(II) - not lower than 88 % in the presence of 8-hydroxyquinoline as a complexing agent. The surfactant-rich phase containing analytes was subjected to back-extraction with 0.2 M HNO3 before ICP-OES measurements. The preconcentration in the proposed BztCl-NaDHSS-H2O ATPS for 30 s and the high degree of back-extraction, which was achieved in 1 min, significantly reduced the sample preparation time, matrix effects and provided low LODs in the range of 0.04-1.0 μg L-1, the preconcentration factor was 120. The analysis of a certified reference material sample of surface water and the real samples of tap, sea, and waste water verified the method accuracy.
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Affiliation(s)
- Svetlana V Smirnova
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia.
| | - Ivan V Mikheev
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia
| | - Vladimir V Apyari
- Chemistry Department, Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia
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2
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Zou J, Qiu YY, Li H, Jiang F. Sulfur disproportionation realizes an organic-free sulfidogenic process for sustainable treatment of acid mine drainage. WATER RESEARCH 2023; 232:119647. [PMID: 36738555 DOI: 10.1016/j.watres.2023.119647] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/03/2023] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Biological sulfidogenic processes (BSPs) have been considered effective biotechnologies for the treatment of organic-deficit acid mine drainage (AMD) and heavy metal recovery. However, high-rate sulfide production relies on the continuous addition of exogenous organic substrates as electron donors to facilitate dissimilatory sulfate reduction, which substantially increases the operational cost and CO2 emission and also limits the wide application of BSPs in AMD treatment. In this study, we proposed a novel chemoautotrophic elemental sulfur disproportionation (SD) process as an alternative to conventional BSPs for treating AMD, in which sulfur-disproportionating bacteria (SDB) disproportionates sulfur to sulfide and sulfate without organic substrate supplementation. During the 393-day lab-scale test, we observed that the sulfur-disproportionating reactor (SDR) achieved a stable high-rate sulfide production, with a maximal rate of 21.10 mg S/L-h at an organic-substrate-free condition. This high rate of sulfide production suggested that the SD process could provide sufficient sulfide to precipitate metal ions from AMD. Thermodynamics analysis and batch tests further revealed that alkalinity rather than sulfate was the critical factor influencing the SD process, suggesting that the abundant sulfate present in AMD would not inhibit the SD process. The critical condition of SD in the SDR was therefore determined. Microbial community analysis showed that Dissulfurimicrobium sp. was the dominant SDB during the long-term operation regardless of dynamic sulfate and/or alkalinity concentrations, which provides evidence that SDB can be employed for sustainable and high-rate sulfide production for engineering purposes. A multi-stage AMD treatment system equipped with a SDR removed over 99% of the influent metals (i.e., Fe, Al, Zn, Cu, Pb) from AMD except for Mn. This study demonstrated that the novel SD process is a green and promising biotechnology for the sustainable treatment of organic-deficient metal-laden wastewater, such as AMD.
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Affiliation(s)
- Jiahui Zou
- School of Environmental Science and Engineering, Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, China
| | - Yan-Ying Qiu
- School of Environmental Science and Engineering, Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, China
| | - Hao Li
- School of Environmental Science and Engineering, Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, China
| | - Feng Jiang
- School of Environmental Science and Engineering, Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial International Joint Research Center on Urban Water Management and Treatment, Sun Yat-sen University, Guangzhou, China.
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Determination of Ultra-Trace Amounts of Copper in Environmental Water Samples by Dispersive Liquid-Liquid Microextraction Combined with Graphite Furnace Atomic Absorption Spectrometry. SEPARATIONS 2023. [DOI: 10.3390/separations10020093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
A new method of dispersive liquid-liquid microextraction (DLLME) combined with graphite furnace atomic absorption spectrometry (GFAAS) was proposed for the determination of ultra-trace copper. It was based on the reaction of Cu(II) with the laboratory-prepared chelating agent 2-(5-bromo-2-pyridylazo)-5-dimethylaminoaniline (5-Br-PADMA) in a HAc-NaAc buffer solution at pH 5.0 to form stable hydrophobic chelates, which were separated and enriched by DLLME with chlorobenzene (C6H5Cl) and acetonitrile (CH3CN) as extraction and disperser solvents, respectively. The sedimented phase containing the chelates was then determined with GFAAS. Various operating variables that may be affected by the extraction process such as the pH of the solution, the concentration of the chelating agent 5-Br-PADMA, the types and volumes of extraction and disperser solvents, the extraction time, and the centrifugation time were investigated. Under optimum conditions, the calibration curve was linear in the range from 0.02 ng/mL to 0.16 ng/mL of copper with a correlation coefficient of r = 0.9961, and the detection limit was 0.01 ng/mL based on 3Sb. The relative standard deviation for six replicate measurements of 0.05 ng /mL of copper was 3.9%. An enrichment factor (EF) of 110 was obtained. The method has the advantages of low detection limit, high sensitivity, simple operation, less consumption of organic solvents, higher enrichment factor, and environmental friendliness and was applied to the determination of trace copper in environmental water samples with satisfactory results.
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Nantapon T, Naweephattana P, Surawatanawong P, Saetear P, Chantarojsiri T, Ruangsupapichat N. Amino-coumarin-based colorimetric and fluorescent chemosensors capable of discriminating Co 2+, Ni 2+, and Cu 2+ ions in solution and potential utilization as a paper-based device. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 282:121662. [PMID: 35905612 DOI: 10.1016/j.saa.2022.121662] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/08/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
New chemosensors, L1-L3, based on the coumarin Schiff base scaffold with substituent modifications, have been designed and synthesized. The chemosensors L1-L3 exhibited the absorbance and fluorescence spectral changes that can discriminate Co2+, Ni2+, and Cu2+ ions. Sensor L1 demonstrated the ability to respond to Co2+, Ni2+, and Cu2+ ions. Remarkably, the slight modification of substituent on L2 has been observed to cause selective binding to Ni2+ and Cu2+ ions while L3 can specifically detect Cu2+ ions. The in-situ formation of metal and ligand complexes was determined by Job's plot analysis. The limit of detection and the sensing ability of all probes are estimated to be within the range of safe drinking water. Incorporation of the sensing compounds into a paper-based detection system using a laminated paper-based analytical device (LPAD) was demonstrated and found to be consistent to those obtained from the batchwise solution measurements.
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Affiliation(s)
- Thanayada Nantapon
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Phiphob Naweephattana
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Panida Surawatanawong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Phoonthawee Saetear
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand; Flow Innovation-Research for Science and Technology Laboratories (Firstlabs), Thailand
| | - Teera Chantarojsiri
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Nopporn Ruangsupapichat
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
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Application of magnetic nanoparticles modified with L-cysteine for pre-concentration and voltammetric detection of copper(II). Microchem J 2022. [DOI: 10.1016/j.microc.2022.107652] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Thenoyltrifluoroacetone: Preferable Molecule for Solvent Extraction of Metals—Ancient Twists to New Approaches. SEPARATIONS 2022. [DOI: 10.3390/separations9060154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
A review of the investigations devoted to the solvent extraction processes of metal ions with a chelating ligand thenoyltrifluoroacetone (HTTA) is presented herein. It seems that this molecule has been preferred in the field for more than half a century, and that it is used very often as an extractant for almost all metals. The main objective of the present review is also to provide an overview of the synergistic solvent extraction of lanthanoids, particularly with the use of a β-diketone−neutral mixture. Based on the previous published results in the open literature, the extraction efficiency has been examined in detail and discussed further mainly in terms of the corresponding equilibrium constants among other outlined, so-important parameters. Major conclusions on the role of ligating groups of extractants towards the mechanism, an improved extraction enhancement, and selectivity are additionally provided. The fact that ionic liquids (ILs) appear to be replacing volatile diluents in the field of the liquid–liquid extraction of metals, again with the participation of this β-diketone, is not surprising. As is well known, a very efficient and simple way to determine the stoichiometry of the extracted species in the organic phase is by the simple use of the slope analysis method; however, it is sometimes difficult to perform, either because it somehow requests good solubility of the ligand or because obtained slopes are quite often far from integer values in ILs.
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Determination of Ultra-Trace Cobalt in Water Samples Using Dispersive Liquid-Liquid Microextraction Followed by Graphite Furnace Atomic Absorption Spectrometry. Molecules 2022; 27:molecules27092694. [PMID: 35566045 PMCID: PMC9102969 DOI: 10.3390/molecules27092694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/09/2022] [Accepted: 04/10/2022] [Indexed: 11/17/2022] Open
Abstract
A novel method for the determination of ultra-trace cobalt by dispersive liquid–liquid microextraction (DLLME) coupled with graphite furnace atomic absorption spectrometry has been developed. It is based on the color reaction of Co2+ with 2-(5-bromo-2-pyridylazo)-5-dimethylaminoaniline (5-Br-PADMA) in a Britton–Robinson buffer solution at pH 6.0 to form stable hydrophobic chelates, which were separated and enriched by DLLME with 1,2-dichloroethane (CH2ClCH2Cl) as extraction and acetonitrile (CH3CN) as a dispersive solvent. The sedimented phase containing the chelates is then determined with GFAAS. Parameters that affect extraction efficiency, such as types and volumes of extraction and disperser solvents, pH of sample solution, extraction time, concentration of the chelating agent 5-Br-PADMA, and salt effect, were investigated. Under optimal conditions, the calibration graph was linear over the range 0.05–1.0 ng/mL, with a correlation coefficient of 0.9922 and a detection limit of 0.03 ng/mL. Preconcentration factor (PF) is calculated as the ratio of the aqueous solution volume (5 mL) to that of the organic phase volume (40 μL), and enrichment factor (EF) is calculated as the ratio of the slopes of the calibration graphs obtained with and without DLLME for 5.0 mL of sample solution, which were 120 and 112.5, respectively. The extraction efficiency, calculated by EF/PF·100, was 93.8%. The relative standard deviation (RSD) at the 0.5 ng/mL Co2+ level was 3.8% (n = 6). The method has been applied to the determination of trace cobalt in water samples with satisfactory results.
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Huber S, Harder M, Weidacher N, Erharter K, Kreutz C, Schottenberger H, Bonn GK, Rainer M. Analyte recovery from recyclable ionic liquid pre-extractants by means of solid-phase extraction: A versatile tool for efficient and sustainable analytical sample preparation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Gonzalez A, van Lier JB, de Kreuk MK. The role of growth media on composition, bioconversion and susceptibility for mild thermal pre-treatment of waste activated sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 298:113491. [PMID: 34375922 DOI: 10.1016/j.jenvman.2021.113491] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/04/2021] [Accepted: 08/05/2021] [Indexed: 06/13/2023]
Abstract
The highly variable characteristics of waste activated sludge (WAS) hinder the comparison of experimental results on WAS bioconversion between the different studies that use excess sludge from different origin. Sludge grown under laboratory conditions with synthetic wastewater as feed showed high resistance to commonly applied pre-treatment techniques, such as thermal pre-treatment. However, a distinctly higher bioconversion of this sludge was recorded compared to WAS from a full-scale wastewater treatment plant (WWTP). The observed results casted concern on the suitability of the experimental laboratory-based data for practice. The physicochemical and biochemical characteristics of both WAS and lab-grown sludge are dependent on the wastewater characteristics or growth media on which the sludges were grown. The objective of this study was to formulate a growth medium that results into a lab-grown sludge which shows high similarity to the WAS coming from a specific full-scale WWTP in response to a pre-treatment technique. More specifically, in this study we targeted the formation of slowly-biodegradable lab-grown sludge that is similarly responsive to mild thermal pre-treatment with H2O2 addition. By comparing real and synthetic wastewaters, we discussed the various wastewater constituents that may lead to a higher degree of recalcitrance of the produced sludge. We then formulated a growth medium, which was fed to a lab-scale activated sludge reactor and evaluated the nutrient removal capacity, as well as the characteristics of the cultivated sludge before and after pre-treatment. Finally, the growth medium was modified to provoke a change in both the bioconversion and in the response to mild thermal pre-treatment. The growth medium proposed in this study resulted in a slowly-biodegradable sludge (195 ± 3.7 NLCH4/kgVSadded) that after thermal pre-treatment resulted in an increase in methane production of 9 %, which was similar to the WAS coming from the full-scale WWTP. It was concluded that not only the bioconversion but also the response to mild thermal pre-treatment of lab-grown sludge was determined by the composition of the growth media.
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Affiliation(s)
- Adrian Gonzalez
- Faculty of Civil Engineering and Geosciences, Department of Water Management, Sanitary Engineering Section, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, the Netherlands.
| | - Jules B van Lier
- Faculty of Civil Engineering and Geosciences, Department of Water Management, Sanitary Engineering Section, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, the Netherlands
| | - Merle K de Kreuk
- Faculty of Civil Engineering and Geosciences, Department of Water Management, Sanitary Engineering Section, Delft University of Technology, Stevinweg 1, 2628 CN, Delft, the Netherlands
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Barzaga R, Lestón-Sánchez L, Aguilar-Galindo F, Estévez-Hernández O, Díaz-Tendero S. Synergy Effects in Heavy Metal Ion Chelation with Aryl- and Aroyl-Substituted Thiourea Derivatives. Inorg Chem 2021; 60:11984-12000. [PMID: 34308640 DOI: 10.1021/acs.inorgchem.1c01068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Detection and removal of metal ion contaminants have attracted great interest due to the health risks that they represent for humans and wildlife. Among the proposed compounds developed for these purposes, thiourea derivatives have been shown as quite efficient chelating agents of metal cations and have been proposed for heavy metal ion removal and for components of high-selectivity sensors. Understanding the nature of metal-ionophore activity for these compounds is thus of high relevance. We present a theoretical study on the interaction between substituted thioureas and metal cations, namely, Cd2+, Hg2+, and Pb2+. Two substituent groups have been chosen: 2-furoyl and m-trifluoromethylphenyl. Combining density functional theory simulations with wave function analysis techniques, we study the nature of the metal-thiourea interaction and characterize the bonding properties. Here, it is shown how the N,N'-disubstituted derivative has a strong affinity for Hg2+, through cation-hydrogen interactions, due to its greater oxidizing capacity.
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Affiliation(s)
- Ransel Barzaga
- Instituto de Ciencia y Tecnología de Materiales, Universidad de La Habana, 10400 La Habana, Cuba.,Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Lucia Lestón-Sánchez
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Fernando Aguilar-Galindo
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain.,Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, Donostia-San Sebastián, E-20018, Spain
| | | | - Sergio Díaz-Tendero
- Departmento de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain.,Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain.,Institute for Advanced Research in Chemical Science (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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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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Recent progress on electrochemical sensing strategies as comprehensive point-care method. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-020-02732-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Erulaş AF, Şaylan M, Topal S, Zaman BT, Bakırdere EG, Bakırdere S. A new microextraction method for trace nickel determination in green tea samples: Solventless dispersion based dispersive liquid-liquid microextraction combined with slotted quartz tube- flame atomic absorption spectrophotometry. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2020.103623] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Tışlı B, Gösterişli TU, Zaman BT, Bakırdere EG, Bakırdere S. Determination of Manganese in Coffee and Wastewater Using Deep Eutectic Solvent Based Extraction and Flame Atomic Absorption Spectrometry. ANAL LETT 2020. [DOI: 10.1080/00032719.2020.1789871] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Büşra Tışlı
- Department of Chemistry, Yıldız Technical University, Istanbul, Turkey
| | | | - Buse Tuğba Zaman
- Department of Chemistry, Yıldız Technical University, Istanbul, Turkey
| | | | - Sezgin Bakırdere
- Department of Chemistry, Yıldız Technical University, Istanbul, Turkey
- Turkish Academy of Sciences (TÜBA), Çankaya, Ankara, Turkey
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Altunay N, Katin KP. Ultrasonic-assisted supramolecular solvent liquid-liquid microextraction for determination of manganese and zinc at trace levels in vegetables: Experimental and theoretical studies. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113192] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Berrin Topuz, Sennur Merve Yakut. Preconcentration and Separation of Mn(II) from Eenvironmental Water Samples on N,N-bis (Salicylidene) Cyclohexanediamine Functionalized Amberlite XAD-4 Resin and Its Spectrophotometric Assessment. J WATER CHEM TECHNO+ 2020. [DOI: 10.3103/s1063455x20010099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Simultaneous voltammetric detection of cadmium(II), arsenic(III), and selenium(IV) using gold nanostar-modified screen-printed carbon electrodes and modified Britton-Robinson buffer. Anal Bioanal Chem 2020; 412:4113-4125. [PMID: 32296905 DOI: 10.1007/s00216-020-02642-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/30/2020] [Accepted: 04/03/2020] [Indexed: 10/24/2022]
Abstract
The present work reports a newly developed square wave anodic stripping voltammetry (SWASV) methodology using novel gold nanostar-modified screen-printed carbon electrodes (AuNS/SPCE) and modified Britton-Robinson buffer (mBRB) for simultaneous detection of trace cadmium(II), arsenic(III), and selenium(IV). During individual and simultaneous detection, Cd2+, As3+, and Se4+ exhibited well-separated SWASV peaks at approximately - 0.48, - 0.09, and 0.65 V, respectively (versus Ag/AgCl reference electrode), which enabled a highly selective detection of the three analytes. Electrochemical impedance spectrum tests showed a significant decrease in charge transfer resistance with the AuNS/SPCE (0.8 kΩ) compared with bare SPCE (2.4 kΩ). Cyclic voltammetry experiments showed a significant increase in electroactive surface area with electrode modification. The low charge transfer resistance and high electroactive surface area contributed to the high sensitivity for Cd2+ (0.0767 μA (0.225 μg L-1)-1), As3+ (0.2213 μA (μg L-1)-1), and Se4+ (μA (μg L-1)-1). The three analytes had linear stripping responses over the concentration range of 0 to 100 μg L-1, with the obtained LoD for Cd2+, As3+, and Se4+ of 1.6, 0.8, and 1.6 μg L-1, respectively. In comparison with individual detection, the simultaneous detection of As3+ and Se4+ showed peak height reductions of 40.8% and 42.7%, respectively. This result was associated with the possible formation of electrochemically inactive arsenic triselenide (As2Se3) during the preconcentration step. Surface water analysis resulted in average percent recoveries of 109% for Cd2+, 93% for As3+, and 92% for Se4+, indicating the proposed method is accurate and reliable for the simultaneous detection of Cd2+, As3+, and Se4+ in real water samples. Graphical abstract.
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Trujillo‐Rodríguez MJ, Pino V, Miró M. High‐throughput microscale extraction using ionic liquids and derivatives: A review. J Sep Sci 2020; 43:1890-1907. [DOI: 10.1002/jssc.202000045] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/12/2020] [Accepted: 02/12/2020] [Indexed: 12/31/2022]
Affiliation(s)
| | - Verónica Pino
- Departamento de Química (Unidad Departamental de Química Analítica)Universidad de La Laguna (ULL) Tenerife Spain
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de CanariasUniversidad de La Laguna (ULL) Tenerife Spain
| | - Manuel Miró
- FI‐TRACE group, Department of ChemistryUniversity of the Balearic Islands Palma Spain
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20
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Magnetism-reinforced in-tube solid phase microextraction for the online determination of trace heavy metal ions in complex samples. Anal Chim Acta 2019; 1090:82-90. [DOI: 10.1016/j.aca.2019.09.028] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/09/2019] [Accepted: 09/12/2019] [Indexed: 12/22/2022]
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Determination of toxic heavy metals in rice samples using ultrasound assisted emulsification microextraction combined with inductively coupled plasma optical emission spectroscopy. Food Chem 2019; 289:26-32. [DOI: 10.1016/j.foodchem.2019.03.046] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 03/06/2019] [Accepted: 03/10/2019] [Indexed: 01/07/2023]
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22
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Pletnev IV, Smirnova SV, Shvedene NV. New Directions in Using Ionic Liquids in Analytical Chemistry. 1: Liquid–Liquid Extraction. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819070062] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Synergism in the Solvent Extraction of Europium(III) with Thenoyltrifluoroacetone and CMPO in Methylimidazolium Ionic Liquids. J SOLUTION CHEM 2019. [DOI: 10.1007/s10953-019-00844-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Abstract
Saliva, as the first body fluid encountering with the exogenous materials, has good correlation with blood and plays an important role in bioanalysis. However, saliva has not been studied as much as the other biological fluids mainly due to restricted access to its large volumes. In recent years, there is a growing interest for saliva analysis owing to the emergence of miniaturized sample preparation methods. The purpose of this paper is to review all microextraction methods and their principles of operation. In the following, we examine the methods used to analyze saliva up to now and discuss the potential of the other microextraction methods for saliva analysis to encourage research groups for more focus on this important subject area.
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Tian M, Fang L, Yan X, Xiao W, Row KH. Determination of Heavy Metal Ions and Organic Pollutants in Water Samples Using Ionic Liquids and Ionic Liquid-Modified Sorbents. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2019; 2019:1948965. [PMID: 31781471 PMCID: PMC6875364 DOI: 10.1155/2019/1948965] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/09/2019] [Accepted: 10/03/2019] [Indexed: 05/03/2023]
Abstract
Water pollution, especially by inorganic and organic substances, is considered as a critical problem worldwide. Several governmental agencies are listing an increasing number of compounds as serious problems in water because of their toxicity, bioaccumulation, and persistence. In recent decades, there has been considerable research on developing analytical methods of heavy metal ions and organic pollutants from water. Ionic liquids, as the environment-friendly solvents, have been applied in the analytical process owing to their unique physicochemical properties. This review summarizes the applications of ionic liquids in the determination of heavy metal ions and organic pollutants in water samples. In addition, some sorbents that were modified physically or chemically by ionic liquids were applied in the adsorption of pollutants. According to the results in all references, the application of new designed ionic liquids and related sorbents is expected to increase in the future.
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Affiliation(s)
- Minglei Tian
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Luwei Fang
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Xuemin Yan
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Wei Xiao
- College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou, China
| | - Kyung Ho Row
- Department of Chemistry and Chemical Engineering, Inha University, Incheon 402751, Republic of Korea
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Applications and opportunities of experimental design for the dispersive liquid–liquid microextraction method – A review. Talanta 2018; 190:335-356. [DOI: 10.1016/j.talanta.2018.08.002] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 12/22/2022]
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Öztürk Er E, Bakırdere EG, Unutkan T, Bakırdere S. Trace determination of cobalt in biological fluids based on preconcentration with a new competitive ligand using dispersive liquid-liquid microextraction combined with slotted quartz tube-flame atomic absorption spectrophotometry. J Trace Elem Med Biol 2018; 49:13-18. [PMID: 29895362 DOI: 10.1016/j.jtemb.2018.04.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/11/2018] [Accepted: 04/20/2018] [Indexed: 01/31/2023]
Abstract
A new competitive ligand has been synthesized for the preconcentration to obtain lower detection limits by using dispersive liquid-liquid microextraction combined with slotted quartz tube-flame atomic absorption spectrophotometry (DLLME-SQT-FAAS). The proposed method is simple, eco-friendly and has high sensitivity. The preconcentration procedure was optimized on the basis of various parameters affecting the complex formation and extraction efficiency such as pH and volume of buffer solution, volume of ligand solution, mixing period, volume and type of extraction solvent, volume and type of dispersive solvent, and salt effect. Instrumental parameters were also optimized to get higher sensitivity. Under the optimum conditions, the calibration graph was linear in the range of 10-250 ng mL-1and the resulted limits of detection and quantification (LOD and LOQ) for combined method were 4.7 and 15.7 ng mL-1, respectively. The detection power was improved 48-fold using DLLME-SQT-FAAS method compared to conventional FAAS. The precision of the method was found to be high with a relative standard deviation of 2.5%. The accuracy of method was evaluated by recovery experiments using matrix matching study on spiked urine and blood samples. The recoveries for urine and blood samples ranged from 99.8 to 108.9% and 102.5 to 110.0%, respectively.
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Affiliation(s)
- Elif Öztürk Er
- Yildiz Technical University, Chemical Engineering Department, 34349 İstanbul, Turkey
| | | | - Tuğçe Unutkan
- Yildiz Technical University, Chemical Engineering Department, 34349 İstanbul, Turkey
| | - Sezgin Bakırdere
- Yildiz Technical University, Chemistry Department, 34349 İstanbul, Turkey.
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Özzeybek G, Alacakoç B, Kocabaş MY, Bakırdere EG, Chormey DS, Bakırdere S. Trace determination of nickel in water samples by slotted quartz tube-flame atomic absorption spectrometry after dispersive assisted simultaneous complexation and extraction strategy. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:498. [PMID: 30073415 DOI: 10.1007/s10661-018-6884-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 07/25/2018] [Indexed: 05/24/2023]
Abstract
This study presents a new method for the determination of nickel in aqueous samples by slotted quartz tube-flame atomic absorption spectrometry (SQT-FAAS) after a dispersive assisted simultaneous complexation and extraction (DASCE) process. Synthesized ligand was directly dissolved in the extraction solvent to eliminate the complex formation step prior to the extraction. All parameters of the SQT-FAAS and DASCE method were systematically optimized to improve the detection power of nickel for trace determinations. Under the optimum experimental conditions, the optimized method (DASCE-SQT-FAAS) recorded 137-fold enhancement in detection power over the conventional FAAS. The limits of detection and quantification were determined to be 1.6 μg/L and 5.2 μg/L, respectively. The calibration plot was linear over a wide concentration range and the precision for replicate measurements was appreciably high. Nickel was not detected in five different water samples but spiked recovery tests for three samples yielded results that were close to 100%, confirming the method's accuracy and applicability to the matrices tested.
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Affiliation(s)
- Gözde Özzeybek
- Department of Chemistry, Yıldız Technical University, 34349, İstanbul, Turkey
| | - Bihter Alacakoç
- Department of Chemistry, Yıldız Technical University, 34349, İstanbul, Turkey
| | | | | | | | - Sezgin Bakırdere
- Department of Chemistry, Yıldız Technical University, 34349, İstanbul, Turkey.
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29
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Jia X, Gong D, Zhao J, Ren H, Wang J, Zhang X. Zwitterion-functionalized polymer microspheres as a sorbent for solid phase extraction of trace levels of V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) prior to their determination by ICP-MS. Mikrochim Acta 2018; 185:228. [PMID: 29594828 DOI: 10.1007/s00604-018-2766-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 03/10/2018] [Indexed: 02/06/2023]
Abstract
This paper describes the preparation of zwitterion-functionalized polymer microspheres (ZPMs) and their application to simultaneous enrichment of V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) from environmental water samples. The ZPMs were prepared by emulsion copolymerization of ethyl methacrylate, 2-diethylaminoethyl methacrylate and triethylene glycol dimethyl acrylate followed by modification with 1,3-propanesultone. The components were analyzed by elemental analyses as well as Fourier transform infrared spectroscopy, and the structures were characterized by scanning electron microscopy and transmission electron microscopy. The ZPMs were packed into a mini-column for on-line solid-phase extraction (SPE) of the above metal ions. Following extraction with 40 mM NH4NO3 and 0.5 M HNO3 solution, the ions were quantified by ICP-MS. Under the optimized conditions, the enrichment factors (from a 40 mL sample) are up to 60 for the ions V(V), As(III), Sb(III) and Hg(II), and 55 for Cr(III) and Sn(IV). The detection limits are 1.2, 3.4, 1.0, 3.7, 2.1 and 1.6 ng L-1 for V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II), respectively, and the relative standard deviations (RSDs) are below 5.2%. The feasibility and accuracy of the method were validated by successfully analyzing six certified reference materials as well as lake, well and river waters. Graphical abstract Zwitterion-functionalized polymer microspheres (ZPMs) were prepared and packed into a mini-column for on-line solid-phase extraction (SPE) via pump 1. Then V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) ions in environmental waters were eluted and submitted to ICP-MS via pump 2.
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Affiliation(s)
- Xiaoyu Jia
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, People's Republic of China. .,Ningbo Key Laboratory of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observation and Research Station, Chinese Academy of Sciences, Ningbo, 315830, People's Republic of China.
| | - Dirong Gong
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, People's Republic of China
| | - Junyi Zhao
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, People's Republic of China
| | - Hongyun Ren
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, People's Republic of China
| | - Jiani Wang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, People's Republic of China
| | - Xian Zhang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, People's Republic of China.
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Martínez D, Torregrosa D, Grindlay G, Gras L, Mora J. Coupling dispersive liquid-liquid microextraction to inductively coupled plasma atomic emission spectrometry: An oxymoron? Talanta 2018; 176:374-381. [DOI: 10.1016/j.talanta.2017.08.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/03/2017] [Accepted: 08/09/2017] [Indexed: 12/15/2022]
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31
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Chaiyamate P, Seebunrueng K, Srijaranai S. Vortex-assisted low density solvent and surfactant based dispersive liquid–liquid microextraction for sensitive spectrophotometric determination of cobalt. RSC Adv 2018; 8:7243-7251. [PMID: 35540320 PMCID: PMC9078415 DOI: 10.1039/c7ra11896a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Accepted: 02/08/2018] [Indexed: 11/21/2022] Open
Abstract
This study describes the development of vortex-assisted low density solvent and surfactant based dispersive liquid–liquid microextraction (VALS-DLLME) for Co(ii) prior to its spectrophotometric detection. The method consisted of the complexation of Co(ii) with pyrocatechol violet (PV) followed by the preconcentration of the Co(II)–PV complex using VALS-DLLME and then an absorption measurement at 600 nm. The optimum conditions for complex formation were a 1 : 3 mole ratio of Co(ii) and PV at pH 7.5, while the conditions for VALS-DLLME were 300 μL 1-dodecanol as extraction solvent, and 300 μL acetonitrile as dispersive solvent under a vortex for 20 s with the addition of cationic surfactant (0.02 mmol L−1 CTAB). Under the optimum conditions, good linearity was in the range of 0.1–10 mg L−1, the enrichment factor (EF) was 13.5 and the low limit of detection (LOD) was 0.04 mg L−1. The method was applied to the analysis of Co(ii) in water, green leaf vegetable and vitamin B12 samples. The proposed method provided good recoveries in the range of 86–104%, which were comparable to those obtained from flame atomic absorption spectrophotometry. The formation of a Co(II)–PV complex and the VALS-DLLME procedure.![]()
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Affiliation(s)
- Patiwat Chaiyamate
- Materials Chemistry Research Center
- Department of Chemistry
- Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Khon Kaen University
| | - Ketsarin Seebunrueng
- Materials Chemistry Research Center
- Department of Chemistry
- Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Khon Kaen University
| | - Supalax Srijaranai
- Materials Chemistry Research Center
- Department of Chemistry
- Center of Excellence for Innovation in Chemistry
- Faculty of Science
- Khon Kaen University
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Ionic liquid based dispersive liquid–liquid microextraction procedure for the spectrophotometric determination of copper using 3-dimethylamino rhodanine as a chelating agent in natural waters. KARBALA INTERNATIONAL JOURNAL OF MODERN SCIENCE 2017. [DOI: 10.1016/j.kijoms.2017.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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33
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Stanisz E, Werner J. Ligandless, Task-Specific Ionic Liquid-Based Ultrasound-Assisted Dispersive Liquid–Liquid Microextraction for the Determination of Cobalt Ions by Electrothermal Atomic Absorption Spectrometry. ANAL LETT 2017. [DOI: 10.1080/00032719.2017.1322095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ewa Stanisz
- Department of General and Analytical Chemistry, Poznan University of Technology, Poznan, Poland
| | - Justyna Werner
- Department of General and Analytical Chemistry, Poznan University of Technology, Poznan, Poland
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34
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Non-conventional solvents in liquid phase microextraction and aqueous biphasic systems. J Chromatogr A 2017; 1500:1-23. [DOI: 10.1016/j.chroma.2017.04.012] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/06/2017] [Accepted: 04/07/2017] [Indexed: 01/08/2023]
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35
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Nanosized ion-imprinted polymer doped with Alizarin Red S for separation and quantification of zinc(II) prior to its determination by electrothermal AAS. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2322-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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36
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Determination of trace levels of cobalt ion in different real samples using dispersive liquid–liquid microextraction followed by flame atomic absorption spectrometry. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2017. [DOI: 10.1007/s11694-017-9474-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Matong JM, Nyaba L, Nomngongo PN. Determination of As, Cr, Mo, Sb, Se and V in agricultural soil samples by inductively coupled plasma optical emission spectrometry after simple and rapid solvent extraction using choline chloride-oxalic acid deep eutectic solvent. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 135:152-157. [PMID: 27736674 DOI: 10.1016/j.ecoenv.2016.09.033] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 09/02/2016] [Accepted: 09/29/2016] [Indexed: 06/06/2023]
Abstract
A rapid, simple and green ultrasound-assisted extraction method using deep eutectic solvents (DES) for extraction of As, Cr, Mo, Sb, Se and V in soil samples, has been developed. Choline chloride-oxalic acid based DES was used as a solvent. The target analytes were subsequently quantified using inductively coupled plasma optical emission spectrometer (ICP OES). The parameters that affect the extraction of the target analytes was optimized using standard reference material of San Joaquin soil (SRM 2709a). In the optimization step, a two-level full factorial experimental design was used. The factors under investigation include extraction time, sample mass and acid concentration. Under optimized conditions, limits of detection (LOD) and limits of quantification (LOQ) ranged from 0.009 to 0.1 and 0.03-0.3µgg-1, respectively. The repeatability (n=20) estimated in terms of relative standard deviation (%RSD) ranged from 0.9% to 3.7%. The accuracy of the proposed method was carried out using SRM 2709a. The obtained and certified/ indicative values were statistically in good agreement at 95% confidence level. The proposed method applied for quantification of As, Cr, Mo, Sb, Se and V in real soil samples. For comparison, the analytes of interest were also determined using a conventional acid digestion method. According to the paired t-test, the analytical results were not significant differences at 95% confidence level. The method was found to be accurate, precise and environmentally friendly.
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Affiliation(s)
- Joseph M Matong
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Johannesburg 2028, South Africa
| | - Luthando Nyaba
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Johannesburg 2028, South Africa
| | - Philiswa N Nomngongo
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, P.O. Box 17011, Johannesburg 2028, South Africa.
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38
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Arain MB, Yilmaz E, Soylak M. Deep eutectic solvent based ultrasonic assisted liquid phase microextraction for the FAAS determination of cobalt. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.10.005] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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40
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Hasanpour F, Hadadzadeh H, Taei M, Nekouei M, Mozafari E. Sensitive spectrophotometric determination of Co(II) using dispersive liquid-liquid micro-extraction method in soil samples. ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:265. [PMID: 27040110 DOI: 10.1007/s10661-016-5263-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Accepted: 03/23/2016] [Indexed: 06/05/2023]
Abstract
Analytical performance of conventional spectrophotometer was developed by coupling of effective dispersive liquid-liquid micro-extraction method with spectrophotometric determination for ultra-trace determination of cobalt. The method was based on the formation of Co(II)-alpha-benzoin oxime complex and its extraction using a dispersive liquid-liquid micro-extraction technique. During the present work, several important variables such as pH, ligand concentration, amount and type of dispersive, and extracting solvent were optimized. It was found that the crucial factor for the Co(II)-alpha benzoin oxime complex formation is the pH of the alkaline alcoholic medium. Under the optimized condition, the calibration graph was linear in the ranges of 1.0-110 μg L(-1) with the detection limit (S/N = 3) of 0.5 μg L(-1). The preconcentration operation of 25 mL of sample gave enhancement factor of 75. The proposed method was applied for determination of Co(II) in soil samples.
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Affiliation(s)
| | - Hassan Hadadzadeh
- Department of Chemistry, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Masoumeh Taei
- Chemistry Department, Payame Noor University, 19395-4697, Tehran, Iran
| | - Mohsen Nekouei
- Chemistry Department, Payame Noor University, 19395-4697, Tehran, Iran
| | - Elmira Mozafari
- Chemistry Department, Payame Noor University, 19395-4697, Tehran, Iran
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41
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Eftekhari M, Javedani-Asleh F, Chamsaz M. Ultra-Trace Determination of Co (ІІ) in Real Samples Using Ion Pair-Based Dispersive Liquid-Liquid Microextraction Followed by Electrothermal Atomic Absorption Spectrometry. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0378-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Janssen CH, Macías-Ruvalcaba NA, Aguilar-Martínez M, Kobrak MN. Metal extraction to ionic liquids: the relationship between structure, mechanism and application. INT REV PHYS CHEM 2015. [DOI: 10.1080/0144235x.2015.1088217] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Camiel H.C. Janssen
- Facultad de Química, Universidad Nacional Autónoma de México. Ciudad Universitaria, C.P. 04510 México D.F., México
| | - Norma A. Macías-Ruvalcaba
- Facultad de Química, Universidad Nacional Autónoma de México. Ciudad Universitaria, C.P. 04510 México D.F., México
| | - Martha Aguilar-Martínez
- Facultad de Química, Universidad Nacional Autónoma de México. Ciudad Universitaria, C.P. 04510 México D.F., México
| | - Mark N. Kobrak
- Department of Chemistry, Brooklyn College of the City University of New York, 2900 Bedford Ave., Brooklyn, NY 11210, USA
- Department of Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
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43
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Han Q, Huo Y, Yang N, Yang X, Hao T. Determination of Cobalt in Water by Thermal Lens Spectrometry with Cloud Point Extraction. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1017762] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Elečková L, Balogh IS, Imrich J, Andruch V. Application of cinnamoyl derivative as a new ligand for dispersive liquid-liquid microextraction and spectrophotometric determination of cobalt. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815030053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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45
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Eyupoglu V, Polat E, Kunduracioglu A, Turgut HI. A Novel Viewpoint of Imidazolium Salts for Selective Extraction of Cobalt in the Presence of Nickel from Acidic Thiocyanate Solutions by Ionic-Liquid-Based Solvent-Extraction Technique. J DISPER SCI TECHNOL 2015. [DOI: 10.1080/01932691.2015.1004185] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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46
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Wang X, Chen J, Zhou Y, Liu X, Yao H, Ahmad F. Dispersive Liquid–Liquid Microextraction and Micro-Solid Phase Extraction for the Rapid Determination of Metals in Food and Environmental Waters. ANAL LETT 2015. [DOI: 10.1080/00032719.2014.1002036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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47
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Xie Y, Huang Q, Liu M, Wang K, Wan Q, Deng F, Lu L, Zhang X, Wei Y. Mussel inspired functionalization of carbon nanotubes for heavy metal ion removal. RSC Adv 2015. [DOI: 10.1039/c5ra08908e] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Polyethylenimine functionalized carbon nanotubes were prepared through mussel inspired chemistry and the Michael addition reaction, and utilized for the adsorption of Cu2+ from water.
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Affiliation(s)
- Yili Xie
- Department of Environmental and Chemical Engineering
- Nanchang University
- Nanchang 330031
- China
| | - Qiang Huang
- Department of Chemistry and Jiangxi Provincial Key Laboratory of New Energy Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Meiying Liu
- Department of Chemistry and Jiangxi Provincial Key Laboratory of New Energy Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Ke Wang
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research
- Tsinghua University
- Beijing
- P. R. China
| | - Qing Wan
- Department of Chemistry and Jiangxi Provincial Key Laboratory of New Energy Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Fengjie Deng
- Department of Chemistry and Jiangxi Provincial Key Laboratory of New Energy Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Long Lu
- Department of Environmental and Chemical Engineering
- Nanchang University
- Nanchang 330031
- China
| | - Xiaoyong Zhang
- Department of Chemistry and Jiangxi Provincial Key Laboratory of New Energy Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Yen Wei
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research
- Tsinghua University
- Beijing
- P. R. China
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48
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Stanisz E, Werner J, Zgoła-Grześkowiak A. Liquid-phase microextraction techniques based on ionic liquids for preconcentration and determination of metals. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.06.008] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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49
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Hol A, Akdogan A, Kartal AA, Divrikli U, Elci L. Dispersive Liquid–Liquid Microextraction of Nickel Prior to Its Determination by Microsample Injection System-Flame Atomic Absorption Spectrometry. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.900777] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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