1
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Optical, electrochemical, and sensing properties of (E)‐2‐[[(4-hydroxyphenyl)imino]methyl]phenol for the detection of iodide ions. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02937-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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2
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Soni H, Gandhi SA, Pandya A, Sutariya PG. Dansyl driven fluorescence paper-based quencher probe for Pr and I¯ based on calix[4]arene. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Spectrophotometric determination of trace amounts of Sb(III) and Sb(V) in water and biological samples by in-tube dispersive liquid–liquid microextraction and air-assisted liquid–liquid microextraction. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01818-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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4
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Sahragard A, Alahmad W, Varanusupakul P. Electrocolorimetric gel-based sensing approach for simultaneous extraction, preconcentration, and detection of iodide and chromium (VI) ions. Talanta 2021; 235:122715. [PMID: 34517583 DOI: 10.1016/j.talanta.2021.122715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 07/10/2021] [Accepted: 07/12/2021] [Indexed: 12/30/2022]
Abstract
A total integrated electrocolorimetric sensing approach consisting of gel-based electromembrane extraction and colorimetric detection in a one-step process was developed. This system was designed using colorimetric reagents preadded to the agarose gel for the determination of the following two model analytes: iodide and hexavalent chromium [Cr(VI)]. In this system, when a voltage was applied, the analytes were extracted and transferred from the sample solution (donor phase) to the gel (acceptor phase). The analytes then simultaneously reacted with the colorimetric reagents inside the gel, yielding blue and violet colors for iodide and Cr(VI), respectively. These colors were then analyzed using a portable spectrometer and could also be distinguished with the naked eye. Parameters affecting the extraction efficiency were studied and optimized for both analytes. The gel composition for iodide detection was 4% (w/v) agarose, 5% (v/v) H2O2, and 1% (w/v) starch in 2 mM HCl. The gel composition for Cr(VI) detection was 2% (w/v) agarose and 1% (w/v) DPC in 0.5 mM HNO3. Both analytes were extracted at an applied potential of 50 V, an extraction time of 15 min and a stirring rate of 600 rpm. Under the optimized conditions, the developed systems provided linear responses within 15 min for iodide concentrations ranging from 50 to 250 μg L-1 with a detection limit of 18 μg L-1 and for Cr(VI) concentrations ranging from 30 to 125 μg L-1 with a detection limit of 5 μg L-1. Finally, these systems were successfully applied to the determination of iodide in iodide food supplement samples and Cr(VI) in drinking water samples, showing a negligible matrix effect. This integration could also be extended to other analytes and detection systems to develop sensitive, on-site, and environmentally friendly sensing approaches.
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Affiliation(s)
- Ali Sahragard
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Waleed Alahmad
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
| | - Pakorn Varanusupakul
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
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5
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Wang K, Geng C, Wang F, Zhao Y, Ru Z. Urea-doped carbon dots as fluorescent switches for the selective detection of iodide ions and their mechanistic study. RSC Adv 2021; 11:27645-27652. [PMID: 35480658 PMCID: PMC9037827 DOI: 10.1039/d1ra04558j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 07/30/2021] [Indexed: 12/19/2022] Open
Abstract
A facile and green strategy for the fabrication of fluorescent urea-doped carbon dots (N-CDs) has been explored. Significantly, the fluorescent N-CDs could recognize iodide ions (I-) with high selectivity, and their photoluminescence could be efficiently quenched by the addition of I-. The sensitivity analysis for I- indicated a linear relationship in the range from 12.5 to 587 μM with the detection limit as low as 0.47 μM. Furthermore, the I- induced fluorescence (FL) quenching mechanism was investigated employing a combination of techniques, including UV-vis/fluorescence spectroscopy, Density Functional Theory (DFT) calculation, TEM and time-resolved fluorescence decay measurements. The DFT calculation results demonstrated that the amino- and amide groups of N-CDs play a significant role in iodide recognition through the formation of multiple N-H⋯I-, C-H⋯I- and C([double bond, length as m-dash]O)N-H⋯I- interactions with I-. The TEM experiment confirmed the aggregation process when I- was added to the N-CDs solution. Moreover, the radiative decay rate of N-CDs, which was first measured and reported the kinetic behaviors of the FL-quenching process, decreased from 3.30 × 107 s-1 to 1.95 × 107 s-1 after the coordination with I- ions. The reduced lifetime demonstrated that the excited energy dissipation led to a dynamic quenching process. Therefore, such carbon materials can function as effective fluorescent switches for the selective detection of I- ions.
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Affiliation(s)
- Kai Wang
- School of Chemical and Environmental Engineering, Anyang Institute of Technology Anyang 455000 China
| | - Cuihuan Geng
- School of Chemical and Environmental Engineering, Anyang Institute of Technology Anyang 455000 China
| | - Fang Wang
- School of Chemical and Environmental Engineering, Anyang Institute of Technology Anyang 455000 China
| | - Yajun Zhao
- Teaching and Research Office of Neihuang Country Anyang 456300 China
| | - Zongling Ru
- School of Materials Science and Engineering, Anyang Institute of Technology Anyang 455000 China
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6
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Tamen AE, Vishnikin A. In-vessel headspace liquid-phase microextraction. Anal Chim Acta 2021; 1172:338670. [PMID: 34119018 DOI: 10.1016/j.aca.2021.338670] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/11/2021] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
A new mode of headspace liquid-phase microextraction termed in-vessel headspace liquid-phase microextraction (IV-HS-LPME) has been developed. A plastic vessel was used as a holder for an extraction phase. Problems with drop stability, limitations in the stirring speed, and too little volume of the acceptor phase have been completely eliminated. The proposed approach is fully compatible with ordinary instruments and microcuvettes used in spectrophotometry. The potential of the method was evaluated by determining the iodide concentration in various samples. Iodide in the donor phase was converted to volatile I2 by oxidation with 1 mmol L-1 K2Cr2O7. The reaction mixture was agitated on a magnetic stirrer for 30 min at a stirring speed of 1200 rpm. A 1% (w/v) aqueous solution of KI was used as the acceptor phase. The absorbance of the I3- ion formed in the acceptor phase was measured in a 50 μL microcuvette at 350 nm. For the case of extraction from 10 mL donor solution into 50 μL of acceptor phase, the calibration graph is linear in the range of 20-400 μg L-1 (as I-) with a detection limit of 6 μg L-1. The developed method has a high precision comparable to conventional spectrophotometric methods (0.6-1.5%). The extraction efficiency obtained in the optimal conditions was 10.5%. The distribution constants for equilibria between the donor solution and the headspace and between the headspace and the acceptor solution are 0.8 ± 0.1 and 16 ± 2, respectively. The developed method was successfully applied to determine the iodine content in natural waters, medicines and algae.
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Affiliation(s)
- Aimad-Eddine Tamen
- Department of Analytical Chemistry, Faculty of Chemistry, Oles Honchar Dnipro National University, 72 Gagarin Avenue, Dnipro, 49010, Ukraine
| | - Andriy Vishnikin
- Department of Analytical Chemistry, Faculty of Chemistry, Oles Honchar Dnipro National University, 72 Gagarin Avenue, Dnipro, 49010, Ukraine.
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7
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A comprehensive review on application of the syringe in liquid- and solid-phase microextraction methods. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [DOI: 10.1007/s13738-020-02025-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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8
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Safaei Moghaddam Z, Kaykhaii M, Khajeh M, Oveisi AR. PCN-222 metal-organic framework: a selective and highly efficient sorbent for the extraction of aspartame from gum, juice, and diet soft drink before its spectrophotometric determination. BMC Chem 2020; 14:19. [PMID: 32206761 PMCID: PMC7085135 DOI: 10.1186/s13065-020-00674-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 03/12/2020] [Indexed: 11/10/2022] Open
Abstract
In this paper, we describe synthesis and application of an iron porphyrinc metal-organic framework PCN-222(Fe) for solid phase extraction of aspartame, an artificial non-saccharine sweetener, from gum, juice and diet soft drink samples prior to its determination by spectrophotometry. The mesoporous MOF was synthesized solvo-thermally and characterized by Fourier transform-infrared spectroscopy, powder X-ray diffraction, scanning electron microscopy, and Brunauer-Emmett-Teller techniques. To obtain the best extraction efficiency of aspartame, significant affecting parameters such as pH of sample solution, amount of the sorbent, type and volume of eluting solvent, and adsorption and desorption times were investigated and optimized. Under optimum conditions, the calibration graph for aspartame was linear in the range of 0.1 to 100.0 mg.L-1 and relative standard deviation of aspartame was 1.7% (n = 7). Limit of detection of method calculated as 0.019 mg.L-1 and the enrichment factor of 350 folds was obtained. Adsorption capacity of synthesized sorbent was found to be 356 mg.g-1. Hierarchical porosity, the eight terminal-OH groups of the Zr6 node, and hydrogen bonding possibly play vital role for selective adsorption of aspartame. The optimized method was successfully applied to the determination of aspartame in real samples with reasonable recoveries (> 98%).
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Affiliation(s)
- Zahra Safaei Moghaddam
- 1Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, 98135-674 Iran
| | - Massoud Kaykhaii
- 1Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, 98135-674 Iran
| | - Mostafa Khajeh
- 2Department of Chemistry, Faculty of Science, University of Zabol, Zabol, Iran
| | - Ali Reza Oveisi
- 2Department of Chemistry, Faculty of Science, University of Zabol, Zabol, Iran
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9
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Sargazi M, Kaykhaii M. Application of a smartphone based spectrophotometer for rapid in-field determination of nitrite and chlorine in environmental water samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 227:117672. [PMID: 31669937 DOI: 10.1016/j.saa.2019.117672] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/09/2019] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
In this paper, a low cost and portable smartphone-based spectrophotometer with the purpose of measuring trace levels of two important anions, chlorine and nitrite ions in water samples, is introduced. This home-made spectrophotometer is made of Plexiglas, equipped with two LEDs as a light source, and a piece of DVD is acted as light dispersing element. Battery of smartphone was used as its power supply and spectral analysis was performed by a free software downloadable from Google Playstore. By using this lightweight spectrophotometer, various environmental samples were analyzed for their NO2- and Cl2 content in field. Good detection limits of 5.00 × 10-2 mg L-1 and 8.60 × 10-3 mg L-1 were obtained for chlorine and nitrite, respectively. The linear range for chlorine was 1.00-4.00 mg L-1 and this range for nitrite was 0.05-1.20 mg L-1. Reproducibility as relative standard deviation for both chlorine and nitrite was better than 8.75%. In order to investigate validity of data, results were compared to standard methods of measuring chlorine and nitrite, using both spectrophotometry and commercial kits which showed no difference between results obtained. This very simple to use and inexpensive device can be used many times, so can be considered as a low-cost alternative to the detection device of commercial kits.
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Affiliation(s)
- Mona Sargazi
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, 98135-674, Iran
| | - Massoud Kaykhaii
- Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, 98135-674, Iran; Smartphone Analytical Sensors Research Centre, University of Sistan and Baluchestan, Zahedan, Iran.
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10
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Gavrilenko NA, Fedan DA, Saranchina NV, Gavrilenko MA. Solid phase colorimetric determination of iodine in food grade salt using polymethacrylate matrix. Food Chem 2019; 280:15-19. [DOI: 10.1016/j.foodchem.2018.12.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 11/17/2018] [Accepted: 12/09/2018] [Indexed: 12/22/2022]
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11
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Hashemi SH, Yahyavi H, Kaykhaii M, Hashemi M, Mirmoghaddam M, Keikha AJ. Spectrofluorometrical Determination of Vitamin B
1
in Different Matrices Using Box‐Behnken Designed Pipette Tip Solid Phase Extraction by a Carbon Nanotube Sorbent. ChemistrySelect 2019. [DOI: 10.1002/slct.201803731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sayyed Hossein Hashemi
- Department of Marine ChemistryFaculty of Marine ScienceChabahar Maritime University Chabahar Iran
| | - Hossein Yahyavi
- Department of ChemistryFaculty of SciencesUniversity of Sistan and Baluchestan Zahedan Iran
| | - Massoud Kaykhaii
- Department of ChemistryFaculty of SciencesUniversity of Sistan and Baluchestan Zahedan Iran
| | - Mohammad Hashemi
- Department of BiochemistrySchool of MedicineZahedan University of Medical Sciences Zahedan, Iran
| | - Majid Mirmoghaddam
- Department of ChemistryFaculty of SciencesUniversity of Sistan and Baluchestan Zahedan Iran
| | - Ahmad Jamali Keikha
- Department of Mechanical EngineeringFaculty of Marine EngineeringChabahar Maritime University Chabahar Iran
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12
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Determination of iodide based on dynamic gas extraction and colorimetric detection by paper modified with silver triangular nanoplates. Microchem J 2019. [DOI: 10.1016/j.microc.2018.11.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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13
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Sutariya PG, Soni H, Gandhi SA, Pandya A. Luminescent behavior of pyrene-allied calix[4]arene for the highly pH-selective recognition and determination of Zn2+, Hg2+ and I−via the CHEF-PET mechanism: computational experiment and paper-based device. NEW J CHEM 2019. [DOI: 10.1039/c9nj01388a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In this article, for the first time, we have reported a novel CHEF-PET fluorescence sensor L based on calix[4]arene containing four pyrene groups as binding sites, which is highly selective and sensitive towards Zn2+, Hg2+ and I−.
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Affiliation(s)
- Pinkesh G. Sutariya
- Department of Chemistry
- Bhavan's Shree I. L. Pandya. Arts-Science and Smt. J. M. Shah Commerce College
- Sardar Patel University
- V. V. Nagar
- India
| | - Heni Soni
- Department of Chemistry
- Bhavan's Shree I. L. Pandya. Arts-Science and Smt. J. M. Shah Commerce College
- Sardar Patel University
- V. V. Nagar
- India
| | - Sahaj A. Gandhi
- Department of Physics
- Bhavan's Shree I. L. Pandya. Arts-Science and Smt. J. M. Shah Commerce College
- Sardar Patel University
- V. V. Nagar
- India
| | - Alok Pandya
- Department of Physical Sciences
- Institute of Advanced Research
- Gandhinagar
- India
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14
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Song J, Zhao L, Wang Y, Xue Y, Deng Y, Zhao X, Li Q. Carbon Quantum Dots Prepared with Chitosan for Synthesis of CQDs/AuNPs for Iodine Ions Detection. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E1043. [PMID: 30551611 PMCID: PMC6315431 DOI: 10.3390/nano8121043] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/08/2018] [Accepted: 12/11/2018] [Indexed: 01/09/2023]
Abstract
Water-soluble and reductive carbon quantum dots (CQDs) were fabricated by the hydrothermal carbonization of chitosan. Acting as a reducing agent and stabilizer, the as-prepared CQDs were further used to synthesize gold nanoparticles (AuNPs). This synthetic process was carried out in aqueous solution, which was absolutely "green". Furthermore, the CQDs/AuNPs composite was used to detect iodine ions by the colorimetric method. A color change from pink to colorless was observed with the constant addition of I- ions, accompanied by a decrease in the absorbance of the CQDs/AuNPs composite. According to the absorbance change, a favorable linear relationship was obtained between ΔA and I- concentration in the range of 20⁻140 μM and 140⁻400 μM. The detection limit of iodide ions, depending on the 3δ/slope, was estimated to be 2.3 μM, indicating high sensitivity to the determination of iodide. More importantly, it also showed good selectivity toward I- over other anion ions, and was used for the analysis of salt samples. Moreover, TEM results indicated that I- ions induced the aggregation of CQDs/AuNPs, resulting in changes in color and absorbance.
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Affiliation(s)
- Juanjuan Song
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Li Zhao
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Yesheng Wang
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Yun Xue
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Yujia Deng
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
| | - Xihui Zhao
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
| | - Qun Li
- School of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
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15
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Dispersive liquid–liquid microextraction based on liquid anion exchanger for the direct extraction of inorganic anions. J Chromatogr A 2018; 1574:27-35. [DOI: 10.1016/j.chroma.2018.09.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 09/02/2018] [Accepted: 09/06/2018] [Indexed: 11/20/2022]
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16
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Limchoowong N, Sricharoen P, Konkayan M, Techawongstien S, Chanthai S. A simple, efficient and economic method for obtaining iodate-rich chili pepper based chitosan edible thin film. Journal of Food Science and Technology 2018; 55:3263-3272. [PMID: 30065438 DOI: 10.1007/s13197-018-3260-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 05/11/2018] [Accepted: 05/28/2018] [Indexed: 11/26/2022]
Abstract
The present study was aimed at designing an iodine supplement in form of edible film made of iodate-coated chitosan (CS-IO3). Inclusion of so obtained films in diet can help in preventing thyroid cancer, leading to improved public health. Chili pepper was coated with iodate thin film (1.5 µm). The iodate-rich film is ready-to-eat serving valuable nutrients. Stability studies of CS-IO3 film using water dipping revealed that there was no leaching of iodate ion, due to the strong interactions between cationic amino group of chitosan and iodate ion. The film showed no change in its antioxidant activity. Iodate concentration in the film was determined at 620 nm selectively, based on the decolorization of malachite green economic method. Iodate content in fruits coated with 1.5% (w/v) CS-IO3 was 11.5 mg g-1 of dry film sample. The iodate-rich samples could be stored without much effect on its freshness, indicating a good shelf life.
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Affiliation(s)
- Nunticha Limchoowong
- 1Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, 123 Mittraphab Road, M. 16, T. Ni-Muang, A. Muang, Khon Kaen, 40002 Thailand
| | - Phitchan Sricharoen
- 1Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, 123 Mittraphab Road, M. 16, T. Ni-Muang, A. Muang, Khon Kaen, 40002 Thailand
| | - Mongkol Konkayan
- 1Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, 123 Mittraphab Road, M. 16, T. Ni-Muang, A. Muang, Khon Kaen, 40002 Thailand
| | - Suchila Techawongstien
- 2Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002 Thailand
| | - Saksit Chanthai
- 1Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, 123 Mittraphab Road, M. 16, T. Ni-Muang, A. Muang, Khon Kaen, 40002 Thailand
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17
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Synthesis and characterization of new tyrosine capped anisotropic silver nanoparticles and their exploitation for the selective determination of iodide ions. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Determination of iodide and total iodine in estuarine waters by cathodic stripping voltammetry using a vibrating silver amalgam microwire electrode. Talanta 2017; 174:165-170. [PMID: 28738564 DOI: 10.1016/j.talanta.2017.06.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 06/01/2017] [Accepted: 06/02/2017] [Indexed: 12/30/2022]
Abstract
Iodide in natural waters is an important nutrient to aquatic organisms and its determination is of relevance to marine aquaculture. For this reason it is of interest to have a simple analytical method for determination of iodide in water samples. Iodide in seawater can be determined electrochemically by cathodic stripping voltammetry (CSV) with a mercury drop electrode which has environmental drawbacks. In an attempt to minimise the use of mercury in voltammetry, a vibrating silver amalgam microwire electrode is used here for the determination by CSV of iodide speciation in natural waters including seawater. Microwire electrodes were made from silver wires (diameter: 12.5µm) and electrochemically coated with mercury. The electrode surface was stable for extended periods of analyses (at least one week) and was then replaced. The optimised conditions include a pH 8, a frequency of 500Hz and a deposition time of 60s, among others. The microwire was reactivated between scans using a conditioning potential at -3 V for 1s. The detection limit for iodide in seawater was found to be 0.7nM I- at a deposition time of 60s. The response increased linearly with the concentration of iodide in seawater up to 100nM I-. The method was successfully applied to various samples from the estuary of the river Mersey (Liverpool Bay). An existing procedure for iodine speciation was modified to enable determination of iodate and total iodine as well as iodide in estuarine waters.
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19
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Zaruba S, Bozóová V, Vishnikin AB, Bazeľ YR, Šandrejová J, Gavazov K, Andruch V. Vortex-assisted liquid-liquid microextraction procedure for iodine speciation in water samples. Microchem J 2017. [DOI: 10.1016/j.microc.2017.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Zaruba S, Vishnikin AB, Andruch V. A novel vortex-assisted liquid–liquid microextraction approach using auxiliary solvent: Determination of iodide in mineral water samples. Talanta 2016; 149:110-116. [DOI: 10.1016/j.talanta.2015.11.049] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 11/08/2015] [Accepted: 11/18/2015] [Indexed: 10/22/2022]
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21
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Yahyavi H, Kaykhaii M, Hashemi M. A rapid spectrofluorimetric method for the determination of malondialdehyde in human plasma after its derivatization with thiobarbituric acid and vortex assisted liquid–liquid microextraction. RSC Adv 2016. [DOI: 10.1039/c5ra22079c] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A rapid spectrofluorimetric method for the determination of malondialdehyde in human plasma after its derivatization with thiobarbituric acid and vortex assisted liquid–liquid microextraction.
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Affiliation(s)
- Hossain Yahyavi
- Department of Chemistry
- Faculty of Sciences
- University of Sistan and Baluchestan
- Zahedan 98135-674
- Iran
| | - Massoud Kaykhaii
- Department of Chemistry
- Faculty of Sciences
- University of Sistan and Baluchestan
- Zahedan 98135-674
- Iran
| | - Mohammad Hashemi
- Department of Clinical Biochemistry
- Cellular Molecular Research Centre
- Zahedan University of Medical Sciences
- Zahedan
- Iran
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22
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KONKAYAN M, LIMCHOOWONG N, SRICHAROEN P, CHANTHAI S. A Highly Sensitive and Selective Method for the Determination of an Iodate in Table-salt Samples Using Malachite Green-based Spectrophotometry. ANAL SCI 2016; 32:1231-1236. [PMID: 27829631 DOI: 10.2116/analsci.32.1231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Mongkol KONKAYAN
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University
| | - Nunticha LIMCHOOWONG
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University
| | - Phitchan SRICHAROEN
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University
| | - Saksit CHANTHAI
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University
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23
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UV-assisted photocatalytic synthesis of highly dispersed Ag nanoparticles supported on DNA decorated graphene for quantitative iodide analysis. Biosens Bioelectron 2015; 69:206-12. [DOI: 10.1016/j.bios.2015.02.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 01/24/2015] [Accepted: 02/17/2015] [Indexed: 01/16/2023]
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24
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In-coupled syringe assisted octanol-water partition microextraction coupled with high-performance liquid chromatography for simultaneous determination of neonicotinoid insecticide residues in honey. Talanta 2015; 139:21-6. [PMID: 25882403 DOI: 10.1016/j.talanta.2015.02.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 02/14/2015] [Accepted: 02/18/2015] [Indexed: 11/20/2022]
Abstract
A simple and fast method namely in-coupled syringe assisted octanol-water partition microextraction combined with high performance liquid chromatography (HPLC) has been developed for the extraction, preconcentration and determination of neonicotinoid insecticide residues (e.g. imidacloprid, acetamiprid, clothianidin, thiacloprid, thiamethoxam, dinotefuran, and nitenpyram) in honey. The experimental parameters affected the extraction efficiency, including kind and concentration of salt, kind of disperser solvent and its volume, kind of extraction solvent and its volume, shooting times and extraction time were investigated. The extraction process was carried out by rapid shooting of two syringes. Therefore, rapid dispersion and mass transfer processes was created between phases, and thus affects the extraction efficiency of the proposed method. The optimum extraction conditions were 10.00 mL of aqueous sample, 10% (w/v) Na2SO4, 1-octanol (100µL) as an extraction solvent, shooting 4 times and extraction time 2min. No disperser solvent and centrifugation step was necessary. Linearity was obtained within the range of 0.1-3000 ngmL(-1), with the correlation coefficients greater than 0.99. The high enrichment factor of the target analytes was 100 fold and low limit of detection (0.25-0.50 ngmL(-1)) could be obtained. This proposed method has been successfully applied in the analysis of neonicotinoid residues in honey, and good recoveries in the range of 96.93-107.70% were obtained.
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25
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Comparison of single best artificial neural network and neural network ensemble in modeling of palladium microextraction. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-014-1396-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Rahmani M, Kaykhaii M, Ghasemi E, Tahernejad M. Application of In-Syringe Dispersive Liquid–Liquid Microextraction and Narrow-Bore Tube Dispersive Liquid–Liquid Microextraction for the Determination of Trace Amounts of BTEX in Water Samples. J Chromatogr Sci 2015; 53:1210-6. [DOI: 10.1093/chromsci/bmu163] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Indexed: 11/13/2022]
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27
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Cuartero M, Crespo GA, Bakker E. Paper-Based Thin-Layer Coulometric Sensor for Halide Determination. Anal Chem 2015; 87:1981-90. [DOI: 10.1021/ac504400w] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Maria Cuartero
- Department
of Inorganic and
Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
| | - Gastón A. Crespo
- Department
of Inorganic and
Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
| | - Eric Bakker
- Department
of Inorganic and
Analytical Chemistry, University of Geneva, Quai Ernest-Ansermet 30, CH-1211 Geneva, Switzerland
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28
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Al Othman Z, Unsal YE, Habila M, Shabaka A, Tuzen M, Soylak M. Determination of Copper in Food and Water by Dispersive Liquid-Liquid Microextraction and Flame Atomic Absorption Spectrometry. ANAL LETT 2015. [DOI: 10.1080/00032719.2014.999276] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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Zhou Q, Zhao K, Xing A. Dispersive liquid-liquid microextraction combined with high-performance liquid chromatography for the enrichment and sensitive determination of Sudan Red pollutants in water samples. J Sep Sci 2014; 37:3347-53. [DOI: 10.1002/jssc.201400778] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 08/14/2014] [Accepted: 08/15/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Qingxiang Zhou
- Beijing Key Laboratory of Oil and Gas Pollution Control; College of Geosciences; China University of Petroleum Beijing; Beijing P. R. China
| | - Kuifu Zhao
- Beijing Key Laboratory of Oil and Gas Pollution Control; College of Geosciences; China University of Petroleum Beijing; Beijing P. R. China
| | - An Xing
- Beijing Key Laboratory of Oil and Gas Pollution Control; College of Geosciences; China University of Petroleum Beijing; Beijing P. R. China
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30
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Maya F, Horstkotte B, Estela JM, Cerdà V. Automated in-syringe dispersive liquid-liquid microextraction. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2014.03.009] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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