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Aydin F, Alkan V, Dönmez F. Developing of an eco-friendly liquid-liquid microextraction method by using menthol-based hydrophobic deep eutectic solvent for determination of basic fuchsin dye: assessment of the greenness profile. Environ Monit Assess 2024; 196:485. [PMID: 38684572 DOI: 10.1007/s10661-024-12657-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 04/19/2024] [Indexed: 05/02/2024]
Abstract
Herein, we aimed to develop a new environmentally friendly liquid-liquid microextraction (LLME) method based on hydrophobic deep eutectic solvent (hDES) synthesized using biodegradable dl-menthol and decanoic acid for the spectrophotometric determination of toxic basic fuchsin dye in environmental water samples. The parameters affecting the extraction efficiency such as pH, mole ratio, and volume of hDES (1:2) and type and volume of organic solvent, sample volume, times of vortex, ultrasonic bath and centrifuge, ionic strength, and matrix effect were investigated and optimized. Under optimal conditions, the calibration curve showed linearity in the range of 7.4-167 μg L-1 with a coefficient of determination of 0.9994. The limit of detection, intra-day and inter-day precision, and recovery values were 2.25 μg L-1, 2.46% and 4.45%, and 105 ± 3%, respectively. The preconcentration and enrichment factors were found to be 30 and 61.5, respectively. The proposed hDES-LLME methodology was successfully applied to the environmental water samples to detect toxic BF dye (95-105%). Finally, the ecological impact of the suggested method was evaluated using the analytical eco-scale (PPS:88), complementary green analytical procedure indexe (ComplexGAPI), and the Analytical GREEnness tool (0.63). The assessment results showed that the presented analytical method can be regarded as a green LLME approach for the determination of the BF in water.
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Affiliation(s)
- Funda Aydin
- Van Yüzüncü Yıl University, Faculty of Pharmacy, Department of Basic Sciences, 65080, Van, Türkiye.
| | - Volkan Alkan
- Van Yüzüncü Yıl University, Faculty of Pharmacy, Department of Basic Sciences, 65080, Van, Türkiye
| | - Fatih Dönmez
- Van Yüzüncü Yıl University, Faculty of Pharmacy, Department of Biochemistry, 65080, Van, Türkiye
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Das E, Rabha S, Talukdar K, Goswami M, Devi A. Propensity of a low-cost adsorbent derived from agricultural wastes to interact with cationic dyes in aqueous solutions. Environ Monit Assess 2023; 195:1044. [PMID: 37589779 DOI: 10.1007/s10661-023-11656-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/31/2023] [Indexed: 08/18/2023]
Abstract
Ash collected from thrown-away by-products while preparing a popular traditional food additive, kolakhar of the Assamese community of North East, India, was used as an alternate cost-effective, porous bioadsorbent option from the conventional activated carbon for the purification of carcinogenic dyes laden water. The base material for kolakhar preparation was taken from the discarded banana stem waste to stimulate agricultural waste management. Methylene blue (MB) and basic fuchsin (BF) dyes were used as model cationic dyes. Characterization techniques like CHN, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission-scanning electron microscope (FE-SEM), energy dispersive X-ray (EDX), and Brunauer-Emmett-Teller (BET) analysis of the prepared banana stem ash (BSA) reveal the presence of high inorganic contents and functional groups in the irregular, porous bioadsorbent with surface area 55.534 m2 g-1. Various regulating parameters studied to optimize the adsorption capacity of BSA were bioadsorbent dose (0.1-3 g/L), temperature (298-318 K), contact time (0-150 min), pH (2-9), and initial dye concentrations (10-40 mg/L). Non-linear kinetic models suggested Elovich for both MB and BF adsorption, while the non-linear isotherm model suggested Langmuir and Temkin for MB and BF adsorption, respectively, as best-fitted curves. The monolayer adsorption capacity (qm) for MB and BF was 15.22 mg/g and 24.08 mg/g at 318 K, respectively, with more than 95% removal efficiency for both dyes. The thermodynamic parameters studied indicated that the adsorption is spontaneous. The ∆H0 values of MB and BF adsorptions were 2.303 kJ/mol (endothermic) and - 29.238 kJ/mol (exothermic), respectively.
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Affiliation(s)
- Emee Das
- Environmental Chemistry Laboratory, Resource Management and Environmental Section, Life Science Division, Institute of Advanced Study in Science and Technology, Guwahati, Assam, 781035, India
| | - Suprakash Rabha
- Environmental Chemistry Laboratory, Resource Management and Environmental Section, Life Science Division, Institute of Advanced Study in Science and Technology, Guwahati, Assam, 781035, India
| | - Karishma Talukdar
- Department of Chemistry, Abhayapuri College, Abhayapuri, Bongaigaon, Assam, India
| | - Manisha Goswami
- Environmental Chemistry Laboratory, Resource Management and Environmental Section, Life Science Division, Institute of Advanced Study in Science and Technology, Guwahati, Assam, 781035, India
| | - Arundhuti Devi
- Environmental Chemistry Laboratory, Resource Management and Environmental Section, Life Science Division, Institute of Advanced Study in Science and Technology, Guwahati, Assam, 781035, India.
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Li SS, Liu M, Wen L, Xu Z, Cheng YH, Chen ML. Exploration of long afterglow luminescent materials composited with graphitized carbon nitride for photocatalytic degradation of basic fuchsin. Environ Sci Pollut Res Int 2023; 30:322-336. [PMID: 35902519 DOI: 10.1007/s11356-022-22097-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
The frequent exposure of the widely used dye, basic fuchsin (BF), is seriously threatening the health of human central nervous system. Thus, removing the environmental pollution caused by BF is crucial, and photocatalytic technology recently has been used to degrade the pollutions dye. In this study, the binary composite SrAl2O4:Eu2+, Dy3+/g-C3N4 was prepared by high-temperature calcination and then applied in BF photodegradation. The results confirmed that the composite material had lower band gap value (Eg) and stronger visible light absorption ability. The photocatalytic capacity of the new composite materials was enhanced compared to that of the non-composite materials. By using the new binary-composited materials, 80% of BF could be degraded in 10 min, and the degradation ratio reached 100% in 30 min. More importantly, even the light source was removed, the photocatalytic reaction could continue due to the luminescence of SrAl2O4:Eu2+, Dy3+, and the degradation efficiency of BF could finally reach more than 90% within 3 h. By quenching experiments and electron spin resonance (ESR) spectra analysis, superoxide anion (·O2-) was verified to be the main active substance in this reaction process. Moreover, the excellent stability and recyclability of this catalyst was also proved. Furthermore, the new composite materials were utilized to degrade the BF aqueous solution and actual lake water, and the total organic matter contents (TOC) were measured. TOC values in these two systems decreased after photocatalytic reaction, which indicated that this catalyst has a great development prospect in the removal of organic matter in water. Our study confirmed a new kind of material of high performance with great significance for emergency treatment of water pollution in practical applications.
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Affiliation(s)
- Shan-Shan Li
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, China
| | - Min Liu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, China
| | - Li Wen
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, China
| | - Zhou Xu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, China
| | - Yun-Hui Cheng
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, China
- School of Food Science and Engineering, Qilu University of Technology, Jinan, Shandong, China
| | - Mao-Long Chen
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, China.
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Man S, Luo D, Sun Q, Yang H, Bao H, Xu K, Zeng X, He M, Yin Z, Wang L, Mo Z, Yang W, Li X. When MXene (Ti 3C 2T x) meet Ti/PbO 2: An improved electrocatalytic activity and stability. J Hazard Mater 2022; 430:128440. [PMID: 35158250 DOI: 10.1016/j.jhazmat.2022.128440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/17/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
Stable electrode materials with high catalytic activity are urgently required for electrochemical degradation of refractory organic pollutants in wastewater treatment. Herein, high conductive MXene (Ti3C2Tx) was firstly fabricated by electrophoretic deposition (EPD) as an interlayer for preparing a novel PbO2 electrode. The well-conducted Ti3C2Tx interlayer significantly improved the electrochemical performance of the EPD-2.0/PbO2 (EPD time was 2.0 min) electrode with the charge transfer resistance decreased by 9.51 times, the inner active sites increased by 5.21 times and the ∙OH radicals generation ability enhanced by 4.07 times than the control EPD-0/PbO2 anode. Consequently, the EPD-2.0/PbO2 electrode achieved nearly 100% basic fuchsin (BF) and 86.78% COD removal efficiency after 3.0 h electrolysis. Therefore, this new PbO2 electrode presented a promising potential for electrochemical degradation of BF and the new Ti3C2Tx middle layer could also be used to fabricate other efficient and stable anodes, such as SnO2, MnO2, TiO2, etc.
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Affiliation(s)
- Shuaishuai Man
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Dehui Luo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Qing Sun
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Haifeng Yang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Hebin Bao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Fundamental Studies department, Army logistics University of PLA, Chongqing 401311, PR China
| | - Ke Xu
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, PR China
| | - Xuzhong Zeng
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Miao He
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Zehao Yin
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Li Wang
- College of Power Engineering, Chongqing Electric Power College, Chongqing 400053, PR China
| | - Zhihong Mo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Wenjing Yang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China.
| | - Xueming Li
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China.
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de O Salomón YL, Georgin J, Dos Reis GS, Lima ÉC, Oliveira MLS, Franco DSP, Netto MS, Allasia D, Dotto GL. Utilization of Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds as low-cost biosorbents for removal of basic fuchsin. Environ Sci Pollut Res Int 2020; 27:33307-33320. [PMID: 32529627 DOI: 10.1007/s11356-020-09471-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
Wastes from the Pacara Earpod tree (Enterolobium contortisilquum) and Ironwood (Caesalpinia leiostachya) seeds were studied as biosorbents for the removal of basic fuchsin from waters. Both biosorbents were prepared and characterized by different analytical methods. The characterization data showed that both materials were mainly composed of lignin, cellulose, and hemicellulose. Both biosorbents exhibited roughened surfaces and surface functional groups such as C-H, C=O, C=C, C-O, C-N, and OH bonds. Furthermore, the XRD pattern shows an amorphous phase with a wide peak from 10 to 30° due to the lignin. In terms of dosage and pH, the use of 1 g L-1 and 9.0, respectively, is recommended. The initial concentrations for the biosorption kinetics ranged from 50 to 500 mg L-1, where the Pacara ear and the Ironwood reached an adsorption capacity of 145.62 and 100.743 mg g-1 for the 500 mg L-1. The pseudo-second-order was found to be the proper model for describing biosorption of basic fuchsin onto Pacara Earpod tree and Ironwood, respectively. For the isotherm experiments, the maximum experimental biosorption capacity was found to be 166.858 and 110.317 mg g-1 for the Pacara Earpod and Ironwood for the initial concentration of 500 mg L-1 at 328 K. The Langmuir and the Tóth models were the best for representing the equilibrium curves for the basic fuchsin on the Pacara Earpod and the Ironwood, respectively. Maximum adsorption capacities of 177.084 mg g-1 and 136.526 mg g-1 were achieved for the Pacara Earpod tree and Ironwood, respectively. The biosorption process was spontaneous, endothermic, and favorable for both biosorbents. The biosorbents were also applied for coloration removal of simulated textile effluents, reaching 66% and 54% for the Pacara Earpod and Ironwood, respectively. For the final application, the materials were used in fixed-bed biosorption, with an initial concentration of 200 mg L-1, reaching breakthrough times of 710 and 415 min, leading to biosorption capacities of the column of 124.5 and 76.5 mg g-1, for the Pacara Earpod and Ironwood, respectively.
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Affiliation(s)
- Yamil L de O Salomón
- Sanitary and Environmental Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Jordana Georgin
- Sanitary and Environmental Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
- Chemical Engineering Department, Federal University of Santa Maria-UFSM, 1000, Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Glaydson Simões Dos Reis
- Graduate Program in Metallurgical, Mine, and Materials Engineering (PPGE3M), School of Engineering, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Éder Claudio Lima
- Graduate Program in Metallurgical, Mine, and Materials Engineering (PPGE3M), School of Engineering, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Marcos L S Oliveira
- Department of Civil and Environmental, Universidad De La Costa, Calle 58 #55-66, Barranquilla, 080002, Atlántico, Colombia.
- Faculdade Meridional IMED, 304, Passo Fundo, RS, 99070-220, Brazil.
| | - Dison S P Franco
- Chemical Engineering Department, Federal University of Santa Maria-UFSM, 1000, Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Matias Schadeck Netto
- Chemical Engineering Department, Federal University of Santa Maria-UFSM, 1000, Roraima Avenue, Santa Maria, RS, 97105-900, Brazil
| | - Daniel Allasia
- Sanitary and Environmental Engineering Department, Federal University of Santa Maria, Santa Maria, 97105-900, Brazil
| | - Guilherme Luiz Dotto
- Chemical Engineering Department, Federal University of Santa Maria-UFSM, 1000, Roraima Avenue, Santa Maria, RS, 97105-900, Brazil.
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Tokalıoğlu Ş, Yavuz E, Aslantaş A, Şahan H, Taşkın F, Patat Ş. Spectrophotometric determination of basic fuchsin from various water samples after vortex assisted solid phase extraction using reduced graphene oxide as an adsorbent. Spectrochim Acta A Mol Biomol Spectrosc 2015; 149:378-384. [PMID: 25974670 DOI: 10.1016/j.saa.2015.04.089] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 03/27/2015] [Accepted: 04/20/2015] [Indexed: 06/04/2023]
Abstract
In this study, a fast and simple vortex assisted solid phase extraction method was developed for the separation/preconcentration of basic fuchsin in various water samples. The determination of basic fuchsin was carried out at a wavelength of 554 nm by spectrophotometry. Reduced graphene oxide which was used as a solid phase extractor was synthesized and characterized by X-ray diffraction, scanning electron microscopy and the Brunauer, Emmett and Teller. The optimum conditions are as follows: pH 2, contact times for adsorption and elution of 30 s and 90 s, respectively, 10 mg adsorbent, and eluent (ethanol) volume of 1 mL. The effects of some interfering ions and dyes were investigated. The method was linear in the concentration range of 50-250 μg L(-1). The adsorption capacity was 34.1 mg g(-1). The preconcentration factor, limit of detection and precision (RSD, %) of the method were found to be 400, 0.07 μg L(-1) and 1.2%, respectively. The described method was validated by analyzing basic fuchsin spiked certified reference material (SPS-WW1 Batch 114-Wastewater) and spiked real water samples.
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Affiliation(s)
- Şerife Tokalıoğlu
- Erciyes University, Faculty of Science, Chemistry Department, TR-38039 Kayseri, Turkey.
| | - Emre Yavuz
- Erciyes University, Faculty of Science, Chemistry Department, TR-38039 Kayseri, Turkey
| | - Ayşe Aslantaş
- Erciyes University, Faculty of Science, Chemistry Department, TR-38039 Kayseri, Turkey
| | - Halil Şahan
- Erciyes University, Faculty of Science, Chemistry Department, TR-38039 Kayseri, Turkey
| | - Ferhat Taşkın
- Erciyes University, Faculty of Science, Physics Department, TR-38039 Kayseri, Turkey
| | - Şaban Patat
- Erciyes University, Faculty of Science, Chemistry Department, TR-38039 Kayseri, Turkey
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Yang X, Li Y, Du Q, Sun J, Chen L, Hu S, Wang Z, Xia Y, Xia L. Highly effective removal of basic fuchsin from aqueous solutions by anionic polyacrylamide/graphene oxide aerogels. J Colloid Interface Sci 2015; 453:107-114. [PMID: 25978557 DOI: 10.1016/j.jcis.2015.04.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 04/13/2015] [Accepted: 04/19/2015] [Indexed: 11/18/2022]
Abstract
Novel anionic polyacrylamide/graphene oxide aerogels were prepared by a freeze drying method and used to remove basic fuchsin from aqueous solutions. These aerogels were sponge-like solid with lightweight, fluffy and porous structure. The batch adsorption experiments were carried out to study the effect of various parameters, such as the solution pH, adsorbent dose, contact time and temperature on adsorption properties of basic fuchsin onto anionic polyacrylamide/graphene oxide aerogels. The kinetics of adsorption corresponded to the pseudo-second-order kinetic model. The Langmuir adsorption isotherm was suitable to describe the equilibrium adsorption process. The maximum adsorption capacity was up to 1034.3 mg/g, which indicated that anionic polyacrylamide/graphene oxide aerogels were promising adsorbents for removing dyes pollutants from aqueous solution.
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Affiliation(s)
- Xiaoxia Yang
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China; College of Textile, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Yanhui Li
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
| | - Qiuju Du
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Jiankun Sun
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Long Chen
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Song Hu
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Zonghua Wang
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yanzhi Xia
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Linhua Xia
- Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, College of Electromechanical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
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Kamińska A, Witkowska E, Winkler K, Dzięcielewski I, Weyher JL, Waluk J. Detection of Hepatitis B virus antigen from human blood: SERS immunoassay in a microfluidic system. Biosens Bioelectron 2014; 66:461-7. [PMID: 25497986 DOI: 10.1016/j.bios.2014.10.082] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 10/09/2014] [Accepted: 10/13/2014] [Indexed: 10/24/2022]
Abstract
A highly sensitive immunoassay utilizing surface-enhanced Raman scattering (SERS) has been developed with a new Raman reporter and a unique SERS-active substrate incorporated into a microfluidic device. An appropriately designed Raman reporter, basic fuchsin (FC), gives strong SERS enhancement and has the ability to bind both the antibody and gold nanostructures. The fuchsin-labeled immuno-Au nanoflowers can form a sandwich structure with the antigen and the antibody immobilized on the SERS-active substrate based on Au-Ag coated GaN. Our experimental results indicate that this SERS-active substrate with its strong surface-enhancement factor, high stability and reproducibility plays a crucial role in improving the efficiency of SERS immunoassay. This SERS assay was applied to the detection of Hepatitis B virus antigen (HBsAg) in human blood plasma. A calibration curve was obtained by plotting the intensity of SERS signal of FC band at 1178cm(-1) versus the concentration of antigen. The low detection limit for Hepatitis B virus antigen was estimated to be 0.01IU/mL. The average relative standard deviation (RSD) of this method is less than 10%. This SERS immunoassay gives exact results over a broad linear range, reflecting clinically relevant HBsAg concentrations. It also exhibits high biological specificity for the detection of Hepatitis B virus antigen.
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Affiliation(s)
- Agnieszka Kamińska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Evelin Witkowska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Katarzyna Winkler
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Igor Dzięcielewski
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland
| | - Jan L Weyher
- Institute of High Pressure Physics, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland
| | - Jacek Waluk
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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Pathrose B, Sahira H, Nampoori VPN, Radhakrishnan P, Mujeeb A. Variations in fluorescence quantum yield of basic fuchsin with silver nanoparticles prepared by femtosecond laser ablation. Spectrochim Acta A Mol Biomol Spectrosc 2014; 128:522-526. [PMID: 24691366 DOI: 10.1016/j.saa.2014.02.078] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 01/29/2014] [Accepted: 02/11/2014] [Indexed: 06/03/2023]
Abstract
Nano structured noble metals have very important applications in diverse fields such as photovoltaics, catalysis, electronic and magnetic devices, etc. In the present work, the application of dual beam thermal lens technique is employed for the determination of the absolute fluorescence quantum yield of the triaminotriphenylmethane dye, basic fuchsin in the presence of silver sol is studied. Silver sol is prepared by femtosecond laser ablation. It is observed that the presence of silver sol decreases the fluorescence quantum efficiency. The observed results are in line with the conclusion that the reduction in quantum yield in the quenching region is essentially due to the non-radiative relaxation of the absorbed energy. It is also observed that the presence of silver sol enhances the thermal lens signal which makes its detection easier at any concentration.
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Affiliation(s)
- Bini Pathrose
- International School of Photonics, Cochin University of Science and Technology, Cochin, Kerala, India.
| | - H Sahira
- Department of Microbiology, Medical College, Thiruvananthapuram, Kerala, India.
| | - V P N Nampoori
- International School of Photonics, Cochin University of Science and Technology, Cochin, Kerala, India.
| | - P Radhakrishnan
- International School of Photonics, Cochin University of Science and Technology, Cochin, Kerala, India.
| | - A Mujeeb
- International School of Photonics, Cochin University of Science and Technology, Cochin, Kerala, India; LBS Centre for Science and Technology, Thiruvananthapuram, Kerala, India.
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