1
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Tang Z, Feng X, Tian H, Wang J, Qin W. Integration of glutathione disulfide-mediated extraction and capillary electrophoresis for determination of Cd(II) and Pb(II) in edible oils. Food Chem 2024; 457:140146. [PMID: 38901338 DOI: 10.1016/j.foodchem.2024.140146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 06/06/2024] [Accepted: 06/15/2024] [Indexed: 06/22/2024]
Abstract
A novel method is introduced for extracting and enriching Cd(II) and Pb(II) from edible oils using glutathione disulfide (GSSG) as both an extractant and a phase-separation agent. The ions in the oils were initially extracted into an aqueous solution containing GSSG. After mixing the solution with acetonitrile at the appropriate volume ratio, a new phase formed, resulting in enrichment of the analytes. The experimental conditions were optimized using response surface methodology with a central composite design. Under optimal conditions, the method offered a combined enrichment factor of >660, with combined extraction efficiencies of 84.31% and 83.35% for Cd(II) and Pb(II), respectively. Finally, the method was conjugated to capillary electrophoresis to determine Cd(II) and Pb(II) in edible oil samples, with detection limits of 0.45 and 1.24 ppb, respectively. In comparison to traditional approaches, the GSSG-based method demonstrates rapidity, efficiency, and recyclability in extracting heavy metal ions from complex matrices.
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Affiliation(s)
- Zhanqiu Tang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xinyi Feng
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Hongyuan Tian
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Junhua Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Weidong Qin
- College of Chemistry, Beijing Normal University, Beijing 100875, China.
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2
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Huangfu X, Zhang Y, Wang Y, Ma C. The determination of thallium in the environment: A review of conventional and advanced techniques and applications. CHEMOSPHERE 2024; 358:142201. [PMID: 38692367 DOI: 10.1016/j.chemosphere.2024.142201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/03/2024]
Abstract
Thallium (Tl) is a potential toxicity element that poses significant ecological and environmental risks. Recently, a substantial amount of Tl has been released into the environment through natural and human activities, which attracts increasing attention. The determination of this hazardous and trace element is crucial for controlling its pollution. This article summarizes the advancement and progress in optimizing Tl detection techniques, including atomic absorption spectroscopy (AAS), voltammetry, inductively coupled plasma (ICP)-based methods, spectrophotometry, and X-ray-based methods. Additionally, it introduces sampling and pretreatment methods such as diffusive gradients in thin films (DGT), liquid-liquid extraction, solid phase extraction, and cloud point extraction. Among these techniques, ICP-mass spectrometry (MS) is the preferred choice for Tl detection due to its high precision in determining Tl as well as its species and isotopic composition. Meanwhile, some new materials and agents are employed in detection. The application of novel work electrode materials and chromogenic agents is discussed. Emphasis is placed on reducing solvent consumption and utilizing pretreatment techniques such as ultrasound-assisted processes and functionalized magnetic particles. Most detection is performed in aqueous matrices, while X-ray-based methods applied to solid phases are summarized which provide non-destructive analysis. This work improves the understanding of Tl determination technology while serving as a valuable resource for researchers seeking appropriate analytical techniques.
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Affiliation(s)
- Xiaoliu Huangfu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing 400044, China.
| | - Yifan Zhang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing 400044, China
| | - Yunzhu Wang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment, and Ecology, Chongqing University, Chongqing 400044, China
| | - Chengxue Ma
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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3
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Shi K, Zhang H, Yang Y, Huang Y, Gao J, Zhang J, Kan G, Jiang Y, Jiang J. Efficient Extraction and Analysis of Nanoplastics by Ionic Liquid-Assisted Cloud-Point Extraction Coupled with Electromagnetic Heating Pyrolysis Mass Spectrometry. Anal Chem 2024; 96:4514-4520. [PMID: 38447135 DOI: 10.1021/acs.analchem.3c05208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Nanoplastics have attracted much attention due to their potential hazards. However, analysis of nanoplastics remains challenging. In this study, ionic liquid-assisted cloud-point extraction (IL-assisted CPE) was developed to enrich nanoplastics in the aqueous environment and further coupled with electromagnetic heating pyrolysis mass spectrometry. The use of trace ILs improves the extraction efficiency of CPE for nanoplastics. The effects of ILs (types, contents), nanoplastic properties (type, size), and environmental factors (aging time, humic acid content) were systematically investigated to evaluate the applicability. The limits of detection of poly(methyl methacrylate) (PMMA) and polystyrene (PS) were determined to be 1.78 and 2.67 μg/L, respectively. Real environmental samples including lake water, rainwater, and influent and effluent from wastewater treatment plant were analyzed with good accuracy (79.58-116.87%) and satisfactory precision (RSD ≤ 11.99%). A possible mechanism for ILs being absorbed into the ordered surfactant micellar and generating larger micelles to synergically enclose hydrophobic nanoplastics was proposed. This work provides a simple and efficient approach to the extraction and analysis of nanoplastics in aqueous environments.
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Affiliation(s)
- Ke Shi
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Hong Zhang
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | | | - Yuelin Huang
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
| | - Jikun Gao
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
| | - Jiaqian Zhang
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Guangfeng Kan
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Yanxiao Jiang
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
| | - Jie Jiang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, Shandong 264209, PR China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150090, PR China
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4
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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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Mouco-Novegil BA, Hernández-Córdoba M, López-García I. Improvement in the Chromium(VI)-Diphenylcarbazide Determination Using Cloud Point Microextraction; Speciation of Chromium at Low Levels in Water Samples. Molecules 2023; 29:153. [PMID: 38202735 PMCID: PMC10779736 DOI: 10.3390/molecules29010153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 12/22/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024] Open
Abstract
A reliable, rapid, and low-cost procedure for determining very low concentrations of hexavalent chromium (Cr) in water is discussed. The procedure is based in the classical reaction of Cr6+ with diphenylcarbazide. Once this reaction has taken place, sodium dodecylsulfate is added to obtain an ion-pair, and Triton X-114 is incorporated. Next, the heating of the mixture allows two phases that can be separated by centrifugation to be obtained in a cloud point microextraction (CPE) process. The coacervate contains all the Cr6+ originally present in the water sample, so that the measurement by molecular absorption spectrophotometry allows the concentration of the metal to be calculated. No harmful organic solvents are required. The discrimination of hexavalent and trivalent forms is achieved by including an oxidation stage with Ce4+. To take full advantage of the pre-concentration effect inherent to the coacervation process, as well as to minimize reagent consumption and waste generation, a portable mini-spectrophotometer which is compatible with microvolumes of liquid samples is used. The preconcentration factor is 415 and a chromium concentration as low as 0.02 µg L-1 can be detected. The procedure shows a good reproducibility (relative standard deviation close to 3%).
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Affiliation(s)
| | | | - Ignacio López-García
- Department of Analytical Chemistry, Faculty of Chemistry, Regional Campus of International Excellence “Campus Mare-Nostrum”, University of Murcia, E-30100 Murcia, Spain; (B.A.M.-N.); (M.H.-C.)
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6
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Taha SS, Ali DS, Hassan RO, Omar Othman H, Smaoui S. Colorimetric and fluorescent dual mode detection of Fe (III) ion in blood samples in combination with cloud point extraction. Microchem J 2023; 195:109390. [DOI: 10.1016/j.microc.2023.109390] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
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7
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Kublay İZ, Koçoğlu ES, Oflu S, Arvas B, Yolaçan Ç, Bakırdere S. Trace nickel determination in seawater matrix using combination of dispersive liquid-liquid microextraction and triethylamine-assisted Mg(OH) 2 method. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:861. [PMID: 37335378 DOI: 10.1007/s10661-023-11435-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/29/2023] [Indexed: 06/21/2023]
Abstract
In order to eliminate the effects of seawater matrix on the precise/accurate determination of elements, new and efficient analytical procedure requires. In this study, co-precipitation method based on the triethylamine (TEA)-assisted Mg(OH)2 was performed to eliminate side-effects of seawater medium on the determination with flame atomic absorption spectrometry (FAAS) prior to the preconcentration of nickel by an optimized dispersive liquid-liquid microextraction (DLLME) method. Under the optimum conditions of the presented method, the limit of detection and quantification (LOD, LOQ) values obtained for nickel were found as 16.1 and 53.8 μg kg-1, respectively. Seawater samples collected from West Antarctic region were used for real sample applications to check the accuracy and applicability of developed method, and satisfying recovery results (86-97%) were obtained. In addition to this, the digital image-based colorimetric detection system and the UV-Vis system were applied to confirm the applicability of the developed DLLME-FAAS method in other analytical systems.
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Affiliation(s)
- İrem Zehra Kublay
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Elif Seda Koçoğlu
- Central Research Laboratory, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Sude Oflu
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Büşra Arvas
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Çiğdem Yolaçan
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye
| | - Sezgin Bakırdere
- Chemistry Department, Faculty of Art and Science, Yıldız Technical University, 34220, Istanbul, Türkiye.
- Turkish Academy of Sciences (TÜBA), Vedat Dalokay Street, No: 112, Çankaya, 06670, Ankara, Türkiye.
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8
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Muhammad S. Evaluation of heavy metals in water and sediments, pollution, and risk indices of Naltar Lakes, Pakistan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:28217-28226. [PMID: 36399291 DOI: 10.1007/s11356-022-24160-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
This study examined the physicochemical parameters of water and sediments in the Naltar Lakes, northern Pakistan. Water and sediments were sampled and analyzed for physicochemical parameters. Heavy metals such as iron (Fe, 11% and 12%), nickel (Ni, 100% and 88%), chromium (Cr, 22% and 12%), and arsenic (As, 0% and 12%) of sampling sites had surpassed the threshold of drinking water set by world health organization (WHO) in the Naltar Lake I (Naltar I) and Naltar Lake II (Naltar II), respectively. Water quality parameters were evaluated for the drinking and irrigation water quality indices (WQI). Drinking WQI values were found within the excellent category for Naltar I and Naltar II, except for the 6% of sampling sites observed in the good category. Toxic parameter concentrations were used for the risk indices, which revealed the highest average daily dose (ADD) values of 138 µg/kg-day and hazard quotient (HQ) 1.8 for children through nitrate (NO3) and As consumption in drinking water from the Naltar I and Naltar II, respectively. Water of the Naltar Lakes were characterized by rock weathering dominance. Heavy metal concentrations of sediments showed a moderate level of contamination that poses a low risk to the Naltar Lake ecosystem.
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Affiliation(s)
- Said Muhammad
- National Centre of Excellence in Geology, University of Peshawar, Peshawar, 25130, Pakistan.
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9
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Al-Nidawi M, Ozalp O, Alshana U, Soylak M. Synergistic Cloud Point Microextraction Prior to Spectrophotometric Determination of Curcumin in Food Samples. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2152830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mais Al-Nidawi
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University, Mersin 10, Turkey
| | - Ozgur Ozalp
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey
| | - Usama Alshana
- Department of Analytical Chemistry, Faculty of Pharmacy, Near East University, Mersin 10, Turkey
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, Oman
| | - Mustafa Soylak
- Department of Chemistry, Faculty of Sciences, Erciyes University, Kayseri, Turkey
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10
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Chen S, Yan J, Zhang C, Wang C, Lu D. Determination of Vanadium(IV) and Vanadium(V) in Beverages by Two-Step Direct Immersion Single-Drop Microextraction with Graphite Furnace Atomic Absorption Spectrometry (GFAAS). ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2135100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Shizhong Chen
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Juntao Yan
- College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Chenghao Zhang
- College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Chunlei Wang
- College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Dengbo Lu
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, China
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11
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Al-Wasidi AS, Naglah AM, Saad FA, Abdelrahman EA. Modification of sodium aluminum silicate hydrate by thioglycolic acid as a new composite capable of removing and preconcentrating Pb(II), Cu(II), and Zn(II) ions from food and water samples. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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12
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Chen S, Yan J, Wang C, Zhang C, Lu D. Determination of Tl(III) and Tl(I) in food samples with two-step direct immersion single-drop microextraction followed by graphite furnace atomic absorption spectrometry. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Hagarová I, Nemček L, Šebesta M, Zvěřina O, Kasak P, Urík M. Preconcentration and Separation of Gold Nanoparticles from Environmental Waters Using Extraction Techniques Followed by Spectrometric Quantification. Int J Mol Sci 2022; 23:ijms231911465. [PMID: 36232767 PMCID: PMC9570491 DOI: 10.3390/ijms231911465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 11/16/2022] Open
Abstract
The quantification of gold nanoparticles (AuNP) in environmental samples at ultratrace concentrations can be accurately performed by sophisticated and pricey analytical methods. This paper aims to challenge the analytical potential and advantages of cheaper and equally reliable alternatives that couple the well-established extraction procedures with common spectrometric methods. We discuss several combinations of techniques that are suitable for separation/preconcentration and quantification of AuNP in complex and challenging aqueous matrices, such as tap, river, lake, brook, mineral, and sea waters, as well as wastewaters. Cloud point extraction (CPE) has been successfully combined with electrothermal atomic absorption spectrometry (ETAAS), inductively coupled plasma mass spectrometry (ICP-MS), chemiluminescence (CL), and total reflection X-ray fluorescence spectrometry (TXRF). The major advantage of this approach is the ability to quantify AuNP of different sizes and coatings in a sample with a volume in the order of milliliters. Small volumes of sample (5 mL), dispersive solvent (50 µL), and extraction agent (70 µL) were reported also for surfactant-assisted dispersive liquid–liquid microextraction (SA-DLLME) coupled with electrothermal vaporization inductively coupled plasma mass spectrometry (ETV-ICP-MS). The limits of detection (LOD) achieved using different combinations of methods as well as enrichment factors (EF) varied greatly, being 0.004–200 ng L−1 and 8–250, respectively.
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Affiliation(s)
- Ingrid Hagarová
- Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 845 15 Bratislava, Slovakia
| | - Lucia Nemček
- Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 845 15 Bratislava, Slovakia
| | - Martin Šebesta
- Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 845 15 Bratislava, Slovakia
| | - Ondřej Zvěřina
- Department of Public Health, Faculty of Medicine, Masaryk University in Brno, Kamenice 5, 625 00 Brno, Czech Republic
| | - Peter Kasak
- Center for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar
| | - Martin Urík
- Faculty of Natural Sciences, Institute of Laboratory Research on Geomaterials, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 845 15 Bratislava, Slovakia
- Correspondence: ; Tel.: +421-2-9014-9392
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14
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Mortada WI, Awad AA, El-Defrawy MM, Khalifa ME. Air-assisted cloud point extraction coupled with inductively coupled plasma optical emission spectroscopy for determination of samarium in environmental samples. ANAL SCI 2022; 38:1489-1495. [DOI: 10.1007/s44211-022-00181-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/20/2022] [Indexed: 11/01/2022]
Abstract
AbstractFor the first time, air-assisted cloud point extraction (AACPE) was presented to preconcentrate metal ions. The procedure was conjugated with inductively coupled plasma-optical emission spectroscopy for determination of samarium. In this procedure, samarium ions were complexed with aluminon and extracted into Triton X-114 in the presence of potassium iodide. The mixture was repeatedly sucked and dispersed with a syringe (three times) to create cloud solution. Experimental factors that affect the extraction competence of the AACPE procedure, such as pH, amount of aluminon and Triton X-114, salt addition, number of suction/injection cycles, and centrifugation rate and time, have been investigated and optimized. A linear calibration curve from 0.2 to 200.0 μg L−1 with enrichment factor and detection limit of 102 and 0.06 μg L−1, respectively, was established under the optimum experimental conditions. The approach was used to determine samarium in wastewater and rock samples, with recoveries ranging from 98% to 99%.
Graphical abstract
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15
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Bunina Z, Varchenko V, Bryleva K, Chornyi V, Belikov K. Determination of Arsenic by ICP‐OES after Cloud Point Extraction with Salt Induced Phase Separation: Application to Gadolinium Based MRI Contrast Agent**. ChemistrySelect 2022. [DOI: 10.1002/slct.202201457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zinaida Bunina
- State Scientific Institution “Institute for single crystals” of the National Academy of Scinces of Ukraine Kharkiv 60172 Ukraine
| | - Victoria Varchenko
- State Scientific Institution “Institute for single crystals” of the National Academy of Scinces of Ukraine Kharkiv 60172 Ukraine
| | - Kateryna Bryleva
- State Scientific Institution “Institute for single crystals” of the National Academy of Scinces of Ukraine Kharkiv 60172 Ukraine
| | | | - Konstantin Belikov
- State Scientific Institution “Institute for single crystals” of the National Academy of Scinces of Ukraine Kharkiv 60172 Ukraine
- V. N. Karazin Kharkiv National University Kharkiv 61022 Ukraine
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16
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Yan J, Zhang C, Wang C, Lu D, Chen S. Speciation of inorganic vanadium by direct immersion dual-drop microextraction coupled with graphite furnace atomic absorption spectrometry detection. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107927] [Citation(s) in RCA: 0] [Impact Index Per Article: 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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Lee CBTL, Wu TY, Yong KJ, Cheng CK, Siow LF, Jahim JM. Investigation into Lewis and Brønsted acid interactions between metal chloride and aqueous choline chloride-oxalic acid for enhanced furfural production from lignocellulosic biomass. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 827:154049. [PMID: 35202677 DOI: 10.1016/j.scitotenv.2022.154049] [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: 12/07/2021] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Furfural has been identified as a valuable biobased platform chemical that can be further converted into bioenergy and biochemicals. Furfural is derived from lignocellulosic biomass and can also be regarded as a sustainable alternative to petrochemical products. Herein, the performance of trivalent metal chlorides (FeCl3, AlCl3) and tetravalent metal chlorides (SnCl4, TeCl4) as Lewis acidic cocatalysts was investigated in an aqueous choline chloride-oxalic acid (16.4 wt% H2O) deep eutectic solvent (DES) system for producing furfural from oil palm fronds (OPFs). The metal chlorides with greater electrical field gradients were stronger Lewis acids that enhanced both furfural production and degradation reactions. The main degradation product in this reaction system was humin, and this result was confirmed by FTIR analysis. By subjecting OPFs to an aqueous DES reaction (120 °C, 45 min) with SnCl4 (2.50 wt%), a furfural yield of 59.4% was obtained; without incorporated metal chlorides, the furfural yield was 46.1%. Characterization studies showed synergistic Lewis and Brønsted acid interactions between metal chlorides and DES components. Overall, the residual OPFs showed high glucan content, which led to the production of glucose (71.4%) as a byproduct via enzymatic hydrolysis. Additionally, the aqueous DES system was recycled and reused for several additional runs. The proposed aqueous DES system presents a promising biorefinery approach for the conversion of OPFs to biochemicals.
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Affiliation(s)
- Cornelius Basil Tien Loong Lee
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Ta Yeong Wu
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia; Monash-Industry Palm Oil Education and Research Platform (MIPO), School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia.
| | - Khai Jie Yong
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Chin Kui Cheng
- Center for Catalysis and Separation (CeCaS), Department of Chemical Engineering, College of Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Lee Fong Siow
- School of Science, Monash University, Jalan Lagoon Selatan, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Jamaliah Md Jahim
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia
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