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Barzinmehr H, Mirza-Aghayan M, Heidarian M. Isatin-Schiff base functionalized graphene oxide as a highly selective turn-on fluorescent probe for the detection of Pd(II) via photoinduced electron transfer pathway. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 309:123673. [PMID: 38198996 DOI: 10.1016/j.saa.2023.123673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 11/16/2023] [Accepted: 11/19/2023] [Indexed: 01/12/2024]
Abstract
We investigated the use of isatin-Schiff base functionalized graphene oxide (ISBGO) as a selective fluorescent chemosensor for the detection of palladium ions. Selectivity tests indicated that over 23 metal ions tested, ISBGO (λex = 340 nm, λem = 504 nm) showed the highest affinity for Pd(II), displaying a 10.1-fold enhancement. Also, interference tests proved that in the presence of both Pd(II) and other metal ions, there was still high fluorescence intensity and no considerable quenching occurred. According to DFT and TD-DFT calculations, photo-induced electron transfer (PET) is responsible for the turn-on response produced by the chemosensor. Coordination of Pd(II) with ISBGO in fact blocks PET from imine nitrogen of 3-iminoindolin-2-one moiety to the benzene ring, which in turn leads to a turn-on response. In addition, Job's plot analysis and Benesi-Hildebrand approach suggest that ISBGO preferably forms a 1:1 complex with Pd(II) with an association constant of 1.020 × 105 M-1. Moreover, FT-IR spectroscopy and DFT study showed that amide oxygen and imine nitrogen of 3-iminoindolin-2-one moiety acted as binding sites of ISBGO. High sensitivity, fast response, great degree of sensitivity, short life time, low detection limit of 32 nM combined with high association constant (Kf) of 1.020 × 105 M-1 and increased fluorescence quantum yield (Φf) of roughly 1.5-fold in the presence of Pd (II), highlight the role of ISBGO as an excellent probe for sensing Pd(II) in aqueous solution.
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Affiliation(s)
- Hamed Barzinmehr
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, Waco, TX 76798-7348, USA; Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P. O. BOX 14335-186, Tehran, Iran
| | - Maryam Mirza-Aghayan
- Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P. O. BOX 14335-186, Tehran, Iran.
| | - Maryam Heidarian
- Chemistry and Chemical Engineering Research Center of Iran (CCERCI), P. O. BOX 14335-186, Tehran, Iran
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KUŞ Ç, ATAŞ H, KENAR A, TAŞTEKİN M. A Simultaneous Determination Method for the Analysis of Chloride and Nitrate Ions in Air Samples by PLS1. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2023. [DOI: 10.18596/jotcsa.1124772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
This study describes a multi-ion-selective electrode system for the simultaneous determination of nitrate and chloride ions in air samples by using multivariate calibration methods. The measurement system was constituted of two ion-selective electrodes, an Ag/AgCl double-junction reference electrode and a multi-potentiometer. The measurements were performed at pH 5.0 acetic acid/sodium acetate buffer. The obtained data were evaluated by using Partial Least Squares (PLS1). The system was used to analyze the synthetic samples and fume-hood samples in terms of the amount of chloride and nitrate. The percentage recovery values obtained from fume-hood samples were 93.8% ± 3.8 and 102.4% ± 2.5 for chloride and nitrate, respectively. The presented system could be an easy-to-use approach for monitoring the amount of chloride and nitrate species in the scope of occupational health and safety analysis.
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Tian Y, Wang P, Du L, Wu C. Advances in gustatory biomimetic biosensing technologies: In vitro and in vivo bioelectronic tongue. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mukherjee S, Bhattacharyya S, Ghosh K, Pal S, Halder A, Naseri M, Mohammadniaei M, Sarkar S, Ghosh A, Sun Y, Bhattacharyya N. Sensory development for heavy metal detection: A review on translation from conventional analysis to field-portable sensor. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.01.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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An electronic tongue for simultaneous determination of Ca 2+, Mg 2+, K + and NH 4+ in water samples by multivariate calibration methods. Talanta 2020; 217:121110. [PMID: 32498915 DOI: 10.1016/j.talanta.2020.121110] [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: 02/08/2020] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 11/20/2022]
Abstract
In this study, a multi ion-selective electrode system was developed for simultaneous determination of Ca2+, Mg2+, K+ and NH4+ ions. The system, called electronic tongue, was used for the quantitative determination of these ions in different water samples. The measurement system was comprised of sixteen ion-selective electrodes, an Ag/AgCl double-junction reference electrode, and a sixteen-channel multi-potentiometer. In the fabrication process of the electronic tongue, an electrode body, which comprised eight ion-selective electrodes together on it, was designed. The obtained data were evaluated by using multivariate calibration methods such as Classical Least Squares (CLS), Principal Component Regression (PCR) and Partial Least Squares (PLS1). The parameters that influence the electronic tongue performance were investigated. Analyses were conducted in synthetic water samples and real water samples. Percentage recovery values in synthetic samples, which were calculated via PLS1, were found 101.35%, 102.41%, 100.04% and 99.23% for Ca2+, Mg2+, K+ and NH4+ respectively. The results, obtained from the electronic tongue and other analytical techniques, were compared and no significant difference was found between the results at 95% confidence level.
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Flow Chemistry in Contemporary Chemical Sciences: A Real Variety of Its Applications. Molecules 2020; 25:molecules25061434. [PMID: 32245225 PMCID: PMC7146634 DOI: 10.3390/molecules25061434] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 12/15/2022] Open
Abstract
Flow chemistry is an area of contemporary chemistry exploiting the hydrodynamic conditions of flowing liquids to provide particular environments for chemical reactions. These particular conditions of enhanced and strictly regulated transport of reagents, improved interface contacts, intensification of heat transfer, and safe operation with hazardous chemicals can be utilized in chemical synthesis, both for mechanization and automation of analytical procedures, and for the investigation of the kinetics of ultrafast reactions. Such methods are developed for more than half a century. In the field of chemical synthesis, they are used mostly in pharmaceutical chemistry for efficient syntheses of small amounts of active substances. In analytical chemistry, flow measuring systems are designed for environmental applications and industrial monitoring, as well as medical and pharmaceutical analysis, providing essential enhancement of the yield of analyses and precision of analytical determinations. The main concept of this review is to show the overlapping of development trends in the design of instrumentation and various ways of the utilization of specificity of chemical operations under flow conditions, especially for synthetic and analytical purposes, with a simultaneous presentation of the still rather limited correspondence between these two main areas of flow chemistry.
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Abstract
The growing concern for sustainability and environmental preservation has increased the demand for reliable, fast response, and low-cost devices to monitor the existence of heavy metals and toxins in water resources. An electronic tongue (e-tongue) is a multisensory array mostly based on electroanalytical methods and multivariate statistical techniques to facilitate information visualization in a qualitative and/or quantitative way. E-tongues are promising analytical devices having simple operation, fast response, low cost, easy integration with other systems (microfluidic, optical, etc) to enable miniaturization and provide a high sensitivity for measurements in complex liquid media, providing an interesting alternative to address many of the existing environmental monitoring challenges, specifically relevant emerging pollutants such as heavy metals and toxins.
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Daikuzono CM, Delaney C, Morrin A, Diamond D, Florea L, Oliveira ON. Paper based electronic tongue - a low-cost solution for the distinction of sugar type and apple juice brand. Analyst 2019; 144:2827-2832. [PMID: 30887969 DOI: 10.1039/c8an01934g] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This work reports on a low cost microfluidic electronic tongue (e-tongue) made with carbon interdigitated electrodes, printed on paper, and coated with boronic acid-containing hydrogels. Using capacitance measurements, the e-tongue was capable of distinguishing between different types of sugars (e.g. glucose, fructose and sucrose), in addition to distinguishing between commercial brands of apple juice using a small volume of sample (6 μL). The channels of the microfluidic e-tongue were made using a wax printer, and were modified with hydrogels containing acrylamide copolymerized with 5 or 20 mol% 3-(acrylamido) phenyl boronic acid (Am-PBA), or a crosslinked homopolymeric hydrogel based on N-(2-boronobenzyl)-2-hydroxy-N,N-dimethylethan-1-aminium-3-sulfopropyl acrylate (DMA-PBA). Such hydrogels, containing a phenyl boronic acid (PBA) moiety, can bind saccharides. Combining various hydrogels of this nature in an e-tongue device enabled discrimination between apple juices, which are known to contain higher amounts of fructose compared to glucose or sucrose. Changes in capacitance were captured with impedance spectroscopy in the frequency range from 0.1 to 10 MHz for solutions with varying concentrations of glucose, fructose and sucrose (from 0 to 0.056 g mL-1). The capacitance data were treated with Principal Component Analysis (PCA) and Interactive Document Map (IDMAP), which then correlated overall sugar content from different brands of apple juice. This low-cost, easy-to-use, disposable e-tongue offers great potential in the routine analysis of food and beverages, while offering comparative performance to alternatives in the literature.
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Affiliation(s)
- Cristiane M Daikuzono
- São Carlos Institute of Physics, University of São Paulo, CP 369, 13560-970, São Carlos, Brazil.
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Abstract
A dynamic development of methodologies of analytical flow injection measurements during four decades since their invention has reinforced the solid position of flow analysis in the arsenal of techniques and instrumentation of contemporary chemical analysis.
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Affiliation(s)
- Marek Trojanowicz
- Laboratory of Nuclear Analytical Methods
- Institute of Nuclear Chemistry and Technology
- 03-195 Warsaw
- Poland
- Department of Chemistry
| | - Kamila Kołacińska
- Laboratory of Nuclear Analytical Methods
- Institute of Nuclear Chemistry and Technology
- 03-195 Warsaw
- Poland
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Tsai MM, Wang CS, Tsai CY, Chen CY, Chi HC, Tseng YH, Chung PJ, Lin YH, Chung IH, Chen CY, Lin KH. MicroRNA-196a/-196b promote cell metastasis via negative regulation of radixin in human gastric cancer. Cancer Lett 2014; 351:222-31. [PMID: 24933454 DOI: 10.1016/j.canlet.2014.06.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 05/25/2014] [Accepted: 06/04/2014] [Indexed: 12/24/2022]
Abstract
MicroRNAs (miRNAs) play an important role to contribute carcinogenesis. The aim of the current study was to identify useful biomarkers from miRNAs. Differential miRNA profiles were analyzed using the miRNA qRT-PCR-based assay. Two of the most upregulated miRNAs were selected and validated. The miR-196a/-196b levels were significantly increased in gastric cancer (GC) tissues (n=109). Overexpression of miR-196a/-196b was significantly associated with tumor progression and poorer 5-year survival outcomes. Overexpression of miR-196a/-196b enhances GC cell migration and invasion. Further, radixin was identified as a target gene of miR-196a/-196b. Elevated miR-196a/-196b expression in GC cells led to reduced radixin protein levels and vice versa. Notably, an inverse correlation between miR-196a/-196b and radixin mRNA and protein expression was observed in GC tissues with in situ hybridization and immunohistochemistry analyses. Together, miR-196a/-196b inhibitory oligonucleotides or overexpression of the radixin may thus have therapeutic potential in suppressing GC metastasis.
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Affiliation(s)
- Ming-Ming Tsai
- Department of Nursing, Chang-Gung University of Science and Technology, Taoyuan 333, Taiwan
| | - Chia-Siu Wang
- Department of General Surgery, Chang Gung Memorial Hospital at Chiayi, Chiayi 613, Taiwan
| | - Chung-Ying Tsai
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan
| | - Cheng-Yi Chen
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan; Department of Medical Research, Mackay Memorial Hospital, Taipei 251, Taiwan
| | - Hsiang-Cheng Chi
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan
| | - Yi-Hsin Tseng
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan
| | - Pei-Jung Chung
- Molecular Medicine Research Center, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan
| | - Yang-Hsiang Lin
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan
| | - I-Hsiao Chung
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan
| | - Ching-Ying Chen
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan
| | - Kwang-Huei Lin
- Department of Biochemistry, College of Medicine, Chang-Gung University, Taoyuan 333, Taiwan.
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Chang J, Zhou G, Christensen ER, Heideman R, Chen J. Graphene-based sensors for detection of heavy metals in water: a review. Anal Bioanal Chem 2014; 406:3957-75. [PMID: 24740529 DOI: 10.1007/s00216-014-7804-x] [Citation(s) in RCA: 145] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 03/16/2014] [Accepted: 03/31/2014] [Indexed: 12/30/2022]
Abstract
Graphene (G) is attracting significant attention because of its unique physical and electronic properties. The production of graphene through the reduction of graphene oxide (GO) is a low-cost method. The reduction of GO can further lead to electrically conductive reduced GO. These graphene-based nanomaterials are attractive for high-performance water sensors due to their unique properties, such as high specific surface areas, high electron mobilities, and exceptionally low electronic noise. Because of potential risks to the environment and human health arising from heavy-metal pollution in water, G-/GO-based water sensors are being developed for rapid and sensitive detection of heavy-metal ions. In this review, a general introduction to graphene and GO properties, as well as their syntheses, is provided. Recent advances in optical, electrochemical, and electrical detection of heavy-metal ions using graphene or GO are then highlighted. Finally, challenges facing G/GO-based water sensor development and outlook for future research are discussed.
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Affiliation(s)
- Jingbo Chang
- Department of Mechanical Engineering, University of Wisconsin-Milwaukee, 3200 North Cramer Street, Milwaukee, WI, 53211, USA
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Plaza Cazón J, Viera M, Donati E, Guibal E. Zinc and cadmium removal by biosorption on Undaria pinnatifida in batch and continuous processes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2013; 129:423-34. [PMID: 23995510 DOI: 10.1016/j.jenvman.2013.07.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 06/17/2013] [Accepted: 07/08/2013] [Indexed: 06/02/2023]
Abstract
Zn(II) and Cd(II) removal by biosorption using Undaria pinnatifida was studied in batch and dynamic systems. The kinetic uptake follows a pseudo second order rate equation indicating that the rate limiting step is a chemical reaction. The equilibrium data are described by the Langmuir isotherm in mono-component solutions. In binary solutions, the Jain and Snowyink model shows that most of the active sites are exclusively accessible to cadmium ions without competition with the zinc ions. The dynamic studies show that the biosorbent has higher retention and affinity for Cd(II) than for Zn(II) in both mono- and bi-component systems. SEM-EDX analysis indicates that the active sites are heterogeneously distributed on the cell wall surface. FT-IR spectrometry characterization shows that carboxylic groups and chemical groups containing N and S contribute to Zn(II) and Cd(II) uptake by U. pinnatifida. According to these results calcium-treated U. pinnatifida is a suitable adsorbent for Zn(II) and Cd(II) pollutants.
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Affiliation(s)
- J Plaza Cazón
- Centro de Investigación y Desarrollo en Fermentaciones Industriales, CINDEFI (CCT CONICET La Plata, UNLP), Facultad de Ciencias Exactas, 50 y 115, 1900 La Plata, Argentina
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Wilson D, del Valle M, Alegret S, Valderrama C, Florido A. Simultaneous and automated monitoring of the multimetal biosorption processes by potentiometric sensor array and artificial neural network. Talanta 2013; 114:17-24. [DOI: 10.1016/j.talanta.2013.03.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 03/16/2013] [Accepted: 03/25/2013] [Indexed: 11/16/2022]
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