1
|
Wang J, Zhou Y, Si G, Xu G, Zhou S, Xue X. A new turn on coumarin-based fluorescence probe for Cr 3+ detection in aqueous solution. J Inorg Biochem 2023; 247:112302. [PMID: 37418872 DOI: 10.1016/j.jinorgbio.2023.112302] [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: 04/04/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/09/2023]
Abstract
Isatin-3-(7'-Methoxychromone-3'-methylidene) hydrazone (L) was synthesized based on chromone schiff base, and used to construct a novel sensor to detect Cr3+. Fluorescence detection experiments were carried out for a range of different concentrations of Cr3+ in aqueous solutions. A concentration calculation model was built on the basis of eliminating interference of excitation spectrum in the fluorescence spectra with mathematical method. Results showed that probe L displayed a 70-fold fluorescence enhancement upon the addition of Cr3+ due to the photo-induced electron transfer (PET) effect. On the other hand, metal ions except Cr3+ did not cause significant change in either the absorption or the fluorescence spectrum of L. In addition, L showed a good selectivity to Cr3+ over other metal cations, especially Al3+ and Cu2+. The probe L can detect Cr3+ highly and selectively by the direct chelation enhanced fluorescence with a detection limit of 3.14 × 10-6 M. Furthermore, benefiting from their good water solubility and biocompatibility, cell imaging and real-time monitoring of Cr3+ in living HepG2 cells were successfully achieved.
Collapse
Affiliation(s)
- Jiafeng Wang
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, PR China
| | - Yu Zhou
- Qlu School of Medicine, Shandong University, Jinan 502100, PR China
| | - Guifu Si
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, PR China
| | - Guoyong Xu
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, PR China
| | - Shuangsheng Zhou
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, PR China; Qlu School of Medicine, Shandong University, Jinan 502100, PR China
| | - Xuan Xue
- Department of Pharmacy, Anhui University of Chinese Medicine, Hefei 230012, PR China.
| |
Collapse
|
2
|
Cai W, Huang H, Li Z, Li X, Fan J, Zhang S, Feng G, Chen J. Compact Fluorescence Spectrometer with Built-In In-Line Calibration: Application to Detect Dissolved Organic Matter in Water. Anal Chem 2023; 95:14228-14234. [PMID: 37699407 DOI: 10.1021/acs.analchem.3c02200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Fluorescence spectrometer (FS) is widely used for component analysis because each fluorescing material has its own characteristic spectrum. However, the spectral calibration is complicated and bulky. Herein, an in-line spectral calibration sheet (ISCS) was proposed in which a narrow band-pass filter and a linear variable filter (LVF) were integrated on a metal plate. By moving the ISCS, the transmitted excitation light power (TEP) as well as fluorescence spectrum can be seamlessly scanned, and the TEP can be used for in-line spectral calibration. A compact FS apparatus based on UV-LED excitation, metal capillary (MC) and ISCS was fabricated (i.e., ISCS-FS), and the ISCS-FS apparatus was applied to detect sodium humate in water. By employing TEP calibration, both the primary inner filter effect (PIFE) and the drift in the optical power of UV-LED can be simultaneously compensated. The linear correlation coefficient of signal concentration was improved from 0.89 to 0.998, and the relative standard deviation (RSD) of replicated detection was improved from 3 to 0.7%. A detection limit of concentration (DLC) of 1.3 μg/L was realized, which is 15-fold lower than that of a commercial FS apparatus (20 μg/L). The DLC is even comparable with that (0.5-4 μg/L) of commercial total organic carbon (TOC) analyzers, which are bulky and expensive. The linear correlation between the measurement results of ISCS-FS and commercial TOC analyzers can reach a good value of 0.94.
Collapse
Affiliation(s)
- Weicheng Cai
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Hui Huang
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhaolin Li
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xuejing Li
- School of Artificial Intelligence, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jianchao Fan
- National Marine Environmental Monitoring Center of China, Dalian 116023, China
| | - Shuo Zhang
- National Marine Environmental Monitoring Center of China, Dalian 116023, China
| | - Guojin Feng
- National Institute of Metrology of China, Beijing 100029, China
| | - Jing Chen
- Electrical & Electronic Experimental Center, Dalian University of Technology, Dalian 116024, China
| |
Collapse
|
3
|
Lo YH, Li SC, Hiramatsu H. Sampling unit for efficient signal detection and application to liquid chromatography-Raman spectroscopy. NEW J CHEM 2021. [DOI: 10.1039/d0nj06054b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new sampling unit design enhances the signal intensity and is available to combine Raman spectrometer with liquid chromatography.
Collapse
Affiliation(s)
- Yu-Hao Lo
- Department of Applied Chemistry, National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | - Shu-Chi Li
- Department of Applied Chemistry, National Chiao Tung University
- Hsinchu 30010
- Taiwan
| | - Hirotsugu Hiramatsu
- Department of Applied Chemistry, National Chiao Tung University
- Hsinchu 30010
- Taiwan
- Center for Emergent Functional Matter Science, National Chiao Tung University
- Hsinchu 30010
| |
Collapse
|
4
|
Optofluidic Technology for Water Quality Monitoring. MICROMACHINES 2018; 9:mi9040158. [PMID: 30424092 PMCID: PMC6187826 DOI: 10.3390/mi9040158] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 03/25/2018] [Accepted: 03/26/2018] [Indexed: 12/14/2022]
Abstract
Water quality-related incidents are attracting attention globally as they cause serious diseases and even threaten human lives. The current detection and monitoring methods are inadequate because of their long operation time, high cost, and complex process. In this context, there is an increasing demand for low-cost, multiparameter, real-time, and continuous-monitoring methods at a higher temporal and spatial resolution. Optofluidic water quality sensors have great potential to satisfy this requirement due to their distinctive features including high throughput, small footprint, and low power consumption. This paper reviews the current development of these sensors for heavy metal, organic, and microbial pollution monitoring, which will breed new research ideas and broaden their applications.
Collapse
|
5
|
Persichetti G, Grimaldi IA, Testa G, Bernini R. Multifunctional optofluidic lab-on-chip platform for Raman and fluorescence spectroscopic microfluidic analysis. LAB ON A CHIP 2017; 17:2631-2639. [PMID: 28664956 DOI: 10.1039/c7lc00460e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A multifunctional lab-on-a-chip platform for spectroscopic analysis of liquid samples based on an optofluidic jet waveguide is reported. The optofluidic detection scheme is achieved through the total internal reflection arising in a liquid jet of only 150 μm diameter, leading to highly efficient signal excitation and collection. This results in an optofluidic chip with an alignment-free spectroscopic detection scheme, which avoids any background from the sample container. This platform has been designed for multiwavelength fluorescence and Raman spectroscopy. The chip integrates a recirculation system that reduces the required sample volume. The evaluation of the device performance has been accomplished by means of fluorescence measurements performed on eosin Y in water solutions, achieving a limit of detection of 33 pM. The sensor has been applied in Raman spectroscopy of water-ethanol solutions, leading to a limit of detection of 0.18%. As additional application, analysis of riboflavin using fluorescence detection demonstrates the possibility of detecting this vitamin at the 560 pM level (0.21 ng l-1). Although measurements have been performed by means of a compact and low-cost spectrometer, in both cases the micro-jet optofluidic chip achieved similar performances if not better than high-end benchtop based laboratory equipment. This approach paves the way towards portable lab-on-a-chip devices for high sensitivity environmental and biochemical sensing, using optical spectroscopy.
Collapse
Affiliation(s)
- G Persichetti
- Institute for Electromagnetic Monitoring of the Environment (IREA), National Research Council (CNR), Naples, Italy.
| | | | | | | |
Collapse
|
6
|
Nemati SH, Liyu DA, Canul AJ, Vasdekis AE. Solvent immersion imprint lithography: A high-performance, semi-automated procedure. BIOMICROFLUIDICS 2017; 11:024111. [PMID: 28798847 PMCID: PMC5533493 DOI: 10.1063/1.4979575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 03/20/2017] [Indexed: 06/07/2023]
Abstract
We expand upon our recent, fundamental report on solvent immersion imprint lithography (SIIL) and describe a semi-automated and high-performance procedure for prototyping polymer microfluidics and optofluidics. The SIIL procedure minimizes manual intervention through a cost-effective (∼$200) and easy-to-assemble apparatus. We analyze the procedure's performance specifically for Poly (methyl methacrylate) microsystems and report repeatable polymer imprinting, bonding, and 3D functionalization in less than 5 min, down to 8 μm resolutions and 1:1 aspect ratios. In comparison to commercial approaches, the modified SIIL procedure enables substantial cost reductions, a 100-fold reduction in imprinting force requirements, as well as a more than 10-fold increase in bonding strength. We attribute these advantages to the directed polymer dissolution that strictly localizes at the polymer-solvent interface, as uniquely offered by SIIL. The described procedure opens new desktop prototyping opportunities, particularly for non-expert users performing live-cell imaging, flow-through catalysis, and on-chip gas detection.
Collapse
Affiliation(s)
- S H Nemati
- Department of Physics, University of Idaho, Moscow, Idaho 83844, USA
| | - D A Liyu
- Department of Physics, University of Idaho, Moscow, Idaho 83844, USA
| | - A J Canul
- Department of Physics, University of Idaho, Moscow, Idaho 83844, USA
| | - A E Vasdekis
- Department of Physics, University of Idaho, Moscow, Idaho 83844, USA
| |
Collapse
|
7
|
Real-time spectroscopic monitoring of photocatalytic activity promoted by graphene in a microfluidic reactor. Sci Rep 2016; 6:28803. [PMID: 27346555 PMCID: PMC4921810 DOI: 10.1038/srep28803] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 06/06/2016] [Indexed: 12/26/2022] Open
Abstract
Photocatalytic microreactors have been utilized as rapid, versatile platforms for the characterization of photocatalysts. In this work, a photocatalytic microreactor integrated with absorption spectroscopy was proposed for the real-time monitoring of photocatalytic activity using different catalysts. The validity of this method was investigated by the rapid screening on the photocatalytic performance of a titanium oxide (TiO2)-decorated graphene oxide (GO) sheet for the degradation of methylene blue under monochromatic visible irradiation. The sampling interval time could be minimized to 10 s for achieving real-time detection. The best photocatalytic activity was observed for an optimized TiO2/GO weight mixing ratio of 7:11, with a reaction rate constant up to 0.067 min−1. The addition of GO into TiO2 enhances photocatalytic activity and adsorption of MB molecules. The synthetic reaction rate constant was up to approximately 0.11 min−1, which was also the highest among the catalysts. The microreactor exhibited good sensitivity and reproducibility without weakening the performance of the photocatalysts. Consequently, the photocatalytic microreactor is promising as a simple, portable, and rapid screening tool for new photocatalysts.
Collapse
|
8
|
Carstea EM, Bridgeman J, Baker A, Reynolds DM. Fluorescence spectroscopy for wastewater monitoring: A review. WATER RESEARCH 2016; 95:205-19. [PMID: 26999254 DOI: 10.1016/j.watres.2016.03.021] [Citation(s) in RCA: 266] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 03/07/2016] [Accepted: 03/08/2016] [Indexed: 05/18/2023]
Abstract
Wastewater quality is usually assessed using physical, chemical and microbiological tests, which are not suitable for online monitoring, provide unreliable results, or use hazardous chemicals. Hence, there is an urgent need to find a rapid and effective method for the evaluation of water quality in natural and engineered systems and for providing an early warning of pollution events. Fluorescence spectroscopy has been shown to be a valuable technique to characterize and monitor wastewater in surface waters for tracking sources of pollution, and in treatment works for process control and optimization. This paper reviews the current progress in applying fluorescence to assess wastewater quality. Studies have shown that, in general, wastewater presents higher fluorescence intensity compared to natural waters for the components associated with peak T (living and dead cellular material and their exudates) and peak C (microbially reprocessed organic matter). Furthermore, peak T fluorescence is significantly reduced after the biological treatment process and peak C is almost completely removed after the chlorination and reverse osmosis stages. Thus, simple fluorometers with appropriate wavelength selectivity, particularly for peaks T and C could be used for online monitoring in wastewater treatment works. This review also shows that care should be taken in any attempt to identify wastewater pollution sources due to potential overlapping fluorophores. Correlations between fluorescence intensity and water quality parameters such as biochemical oxygen demand (BOD) and total organic carbon (TOC) have been developed and dilution of samples, typically up to ×10, has been shown to be useful to limit inner filter effect. It has been concluded that the following research gaps need to be filled: lack of studies on the on-line application of fluorescence spectroscopy in wastewater treatment works and lack of data processing tools suitable for rapid correction and extraction of data contained in fluorescence excitation-emission matrices (EEMs) for real-time studies.
Collapse
Affiliation(s)
- Elfrida M Carstea
- School of Civil Engineering, University of Birmingham, B15 2TT, UK; National Institute of R&D for Optoelectronics, Atomistilor 409, 077125, Magurele, Romania.
| | - John Bridgeman
- School of Civil Engineering, University of Birmingham, B15 2TT, UK.
| | - Andy Baker
- Connected Waters Initiative Research Centre, UNSW Australia, Sydney, NSW 2052, Australia.
| | - Darren M Reynolds
- Biological, Biomedical and Analytical Sciences, University of the West of England, Bristol, BS16 1QY, UK.
| |
Collapse
|
9
|
Persichetti G, Testa G, Berini R. High sensitivity UV fluorescence spectroscopy based on an optofluidic jet waveguide: erratum. OPTICS EXPRESS 2016; 24:4350. [PMID: 26907081 DOI: 10.1364/oe.24.004350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This publisher's note corrects the author listing of a publication.
Collapse
|
10
|
Optofluidic approaches for enhanced microsensor performances. SENSORS 2014; 15:465-84. [PMID: 25558989 PMCID: PMC4327030 DOI: 10.3390/s150100465] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 12/15/2014] [Indexed: 11/30/2022]
Abstract
Optofluidics is a relatively young research field able to create a tight synergy between optics and micro/nano-fluidics. The high level of integration between fluidic and optical elements achievable by means of optofluidic approaches makes it possible to realize an innovative class of sensors, which have been demonstrated to have an improved sensitivity, adaptability and compactness. Many developments in this field have been made in the last years thanks to the availability of a new class of low cost materials and new technologies. This review describes the Italian state of art on optofluidic devices for sensing applications and offers a perspective for further future advances. We introduce the optofluidic concept and describe the advantages of merging photonic and fluidic elements, focusing on sensor developments for both environmental and biomedical monitoring.
Collapse
|