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Xi L, Zhang X, Chen Y, Peng J, Liu M, Huo D, Li G, He H. A fluorescence turn-on strategy to achieve detection of captopril based on Ag nanoclusters. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Fu Y, Li Z, Zhou Z, Sun Q, Zhang J, Fang J. A Fluorescent Self‐Absorption Method for Detection of Captopril using Carbon Quantum Dots. ChemistrySelect 2022. [DOI: 10.1002/slct.202200518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yingqiang Fu
- School of Chemical and Environmental Engineering Anhui polytechnic University Wuhu Anhui 241000 P. R. China
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application Wuhu Anhui 241000 P. R. China
| | - Zhiwen Li
- School of Chemical and Environmental Engineering Anhui polytechnic University Wuhu Anhui 241000 P. R. China
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application Wuhu Anhui 241000 P. R. China
| | - Zhilin Zhou
- School of Chemical and Environmental Engineering Anhui polytechnic University Wuhu Anhui 241000 P. R. China
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application Wuhu Anhui 241000 P. R. China
| | - Qiyao Sun
- School of Chemical and Environmental Engineering Anhui polytechnic University Wuhu Anhui 241000 P. R. China
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application Wuhu Anhui 241000 P. R. China
| | - Jiyue Zhang
- School of Chemical and Environmental Engineering Anhui polytechnic University Wuhu Anhui 241000 P. R. China
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application Wuhu Anhui 241000 P. R. China
| | - Jiajia Fang
- School of Chemical and Environmental Engineering Anhui polytechnic University Wuhu Anhui 241000 P. R. China
- Anhui Province Key Laboratory of Functional Coordinated Complexes for Materials Chemistry and Application Wuhu Anhui 241000 P. R. China
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3
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Górska A, Paczosa-Bator B, Szlósarczyk M, Piech R. Highly sensitive voltammetric determination of captopril on renewable amalgam film electrode. Talanta 2022; 237:122937. [PMID: 34736668 DOI: 10.1016/j.talanta.2021.122937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/27/2021] [Accepted: 10/05/2021] [Indexed: 11/17/2022]
Abstract
New highly sensitive voltammetric method for captopril (CPT) determination was developed. The main novelty of the work was the application of a renewable amalgam film electrode (Hg(Ag)FE) for this purpose. During the research instrumental parameters of the developed method were optimized and were as follows: tw = ts = 5 ms, Es = 5 mV, ΔE = 100 mV. Preconcentration potential and time were equal to 100 mV and 20 s, respectively. All measurements were conducted in electrolyte consisted of 0.1 M HClO4. Limit of detection was calculated and was equal to 1.9 nM (0.39 ng mL-1) for 20 s preconcentration time and Hg(Ag)FE surface area approximately 11.2 mm2. Linearity was achieved in the concentration range 0.05-1 μM. Repeatability of the method expressed as variation coefficient was estimated at 3.5% (0.15 μM CPT, n = 10). Applicability of the method was confirmed by analysis of tablets containing CPT and urine. Recoveries were in the range from 95 to 109% suggesting that the method might be assumed as accurate. Obtained results were also in good agreement with the producer declaration.
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Affiliation(s)
- Anna Górska
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Kraków, Poland
| | - Beata Paczosa-Bator
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Kraków, Poland
| | - Marek Szlósarczyk
- Jagiellonian University Medical College, Department of Inorganic and Analytical Chemistry, Medyczna 9, 30-688, Kraków, Poland
| | - Robert Piech
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059, Kraków, Poland.
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4
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Tan J, Wu S, Cai Q, Wang Y, Zhang P. Reversible regulation of enzyme-like activity of molybdenum disulfide quantum dots for colorimetric pharmaceutical analysis. J Pharm Anal 2021; 12:113-121. [PMID: 35573882 PMCID: PMC9073247 DOI: 10.1016/j.jpha.2021.03.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 02/24/2021] [Accepted: 03/25/2021] [Indexed: 12/15/2022] Open
Abstract
Regulating the catalytic activity of nanozymes is significant for their applications in various fields. Here, we demonstrate a new strategy to achieve reversible regulation of the nanozyme's activity for sensing purpose. This strategy involves the use of zero-dimensional MoS2 quantum dots (MQDs) as the building blocks of nanozymes which display very weak peroxidase (POD)-like activity. Interestingly, such POD-like activity of the MQDs largely enhances in the presence of Fe3+ while diminishes with the addition of captopril thereafter. Further investigations identify the mechanism of Fe3+-mediated aggregation-induced enhancement of the POD-like activity and the inhibitory effect of captopril on the enhancement, which is highly dependent on their concentrations. Based on this finding, a colorimetric method for the detection of captopril is developed. This sensing approach exhibits the merits of simplicity, rapidness, reliability, and low cost, which has been successfully applied in quality control of captopril in pharmaceutical products. Moreover, the present sensing platform allows smartphone read-out, which has promising applications in point-of-care testing devices for clinical diagnosis and drug analysis. A new post-synthesis strategy is developed to achieve reversible regulation of nanozyme's activity. Fe3+-mediated aggregation can enhance the peroxidase-like activity of MoS2 quantum dots more than 10 times. Quality control of captopril in pharmaceutical products is realized by manipulating nanozyme's catalytical activity. This sensing approach allows smartphone read-out, which has promising applications in point-of-care testing.
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Silva DM, Cunha Areias MC. Rutin as an Electrochemical Mediator in the Determination of Captopril using a Graphite Paste Electrode. ELECTROANAL 2020. [DOI: 10.1002/elan.201900145] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Diana Maria Silva
- Departamento de Química Fundamental, Centro de Ciências Exatas e da NaturezaUniversidade Federal de Pernambuco Av. Jornalista Anibal Fernandes, s/n° Cidade Universitária Recife, PE CEP 50.740-560
| | - Madalena Carneiro Cunha Areias
- Departamento de Química Fundamental, Centro de Ciências Exatas e da NaturezaUniversidade Federal de Pernambuco Av. Jornalista Anibal Fernandes, s/n° Cidade Universitária Recife, PE CEP 50.740-560
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6
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Jiang X, Qin D, Mo G, Feng J, Zheng X, Deng B. Facile Preparation of Boron and Nitrogen Codoped Green Emission Carbon Quantum Dots for Detection of Permanganate and Captopril. Anal Chem 2019; 91:11455-11460. [PMID: 31397151 DOI: 10.1021/acs.analchem.9b02938] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A hydrothermal strategy for preparing boron and nitrogen codoped carbon quantum dots was studied using the precursors of p-amino salicylic acid, boric acid and ethylene glycol dimethacrylate. The boron and nitrogen codoped carbon quantum dots have high fluorescence intensity, good monodispersity, high stability, superior water solubility, and a fluorescence quantum yield of 19.6%. Their average size is 5 nm. Their maximum excitation and emission wavelengths are 380 and 520 nm, respectively. Permanganate (MnO4-) quenched boron and nitrogen codoped carbon quantum dots fluorescence through inner filter effect and static quenching effects. The linear relation between quenching efficiency and MnO4- concentration ranged from 0.05 to 60 μmol/L with a detection limit of 13 nmol/L. In the presence of captopril, MnO4- was reduced to Mn2+ and the fluorescence of boron and nitrogen codoped carbon quantum dots was recovered. The linear range between recovery and captopril concentration was from 0.1 to 60 μmol/L. The limit of detection was 0.03 μmol/L. The developed method can be employed as a sensitive fluorescence sensing platform for MnO4-. It has been successfully used for captopril detection in mouse plasma.
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Affiliation(s)
- Xiaohua Jiang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , China
| | - Dongmiao Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , China
| | - Guichun Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , China
| | - Jinsu Feng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , China
| | - Xiangfei Zheng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , China
| | - Biyang Deng
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences , Guangxi Normal University , Guilin 541004 , China
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7
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A chemiluminescence reagent free method for the determination of captopril in medicine and urine samples by using trivalent silver. J Pharm Anal 2018; 7:252-257. [PMID: 29404046 PMCID: PMC5790706 DOI: 10.1016/j.jpha.2017.05.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 04/14/2017] [Accepted: 05/19/2017] [Indexed: 11/22/2022] Open
Abstract
A novel flow-injection chemiluminescence (FI-CL) method free of CL reagent was developed for the determination of captopril based on its enhancing effect on the CL derived from diperiodatoargentate(III)-sulfuric acid system. Compared with the conventional CL system, the CL system based on trivalent silver was characterized of good selectivity for the absence of CL reagent. The CL mechanism was discussed through CL spectra and UV-vis absorption spectra. The conditions of the FI-CL system were investigated and optimized. Under the optimal conditions, the relative CL intensity was linear with the captopril concentration in the range of 0.3-15.0 μg/mL. The detection limit for captopril was 0.05 μg/mL, and the relative standard deviation (n=11) was 2.0% for 5.0 μg/mL captopril. The proposed method was applied to the analysis of captopril in tablet and human urine with the recoveries of 83.1%-112.5%, and the relative standard deviations of 0.5%-4.4%. The results obtained by the proposed method agreed well with those obtained from HPLC method. The proposed method is fast, convenient, and cost-effective for the determination of captopril in medicine and biological samples.
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8
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Determination of dopamine by exploiting the catalytic effect of hemoglobin–stabilized gold nanoclusters on the luminol–NaIO4 chemiluminescence system. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2374-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Headspace single-drop microextraction coupled to microchip-photothermal lens microscopy for highly sensitive determination of captopril in human serum and pharmaceuticals. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2266-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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10
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Shokoufi N, Abbasi-Ahd A, Kargosha K. Laser induced thermal lens microscopy for highly sensitive determination of captopril. APPLIED OPTICS 2017; 56:E58-E63. [PMID: 28414342 DOI: 10.1364/ao.56.000e58] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, a combined flow injection-photo thermal lens microscopy (FI-PTLM) system was used for highly sensitive determination of captopril as an angiotensin-converting enzyme inhibitor. Captopril has no absorption in the visible range, but due to its thiol group could interact with gold nanoparticles (GNPs). GNPs, because of their surface plasmon resonance (SPR), have absorption in the visible range, but their interaction with a low concentration of captopril shows no effective change in UV-Vis spectrophotometry because their aggregation is slight. On the contrary, at the same condition, the PTLM with a visible light source enables sensitive measurement of this compound. The thiol group of captopril binds to the surface of GNPs and decreases the SPR. At the optimum condition in the focal volume of 2.68 fL (f=10-15), the obtained range of linearity was 50-800 nM. The developed method was successfully applied for the determination of captopril in human serum and pharmaceutical samples.
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11
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Chen P, Lao H, Qu F, You J. Ratiometric captopril assay based on the recovery of the Bi(iii)-quenched yellow fluorescence of dually emitting carbon nanodots. NEW J CHEM 2017. [DOI: 10.1039/c6nj03283d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dual emissions of carbon nanodots, as a ratiometric nanosensor, could be used to detect captopril based on the switch effect of Bi3+.
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Affiliation(s)
- Ping Chen
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Haili Lao
- Department of Clinical Laboratory
- Binzhou Central Hospital
- Binzhou Medical College
- Binzhou 256600
- China
| | - Fei Qu
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Jinmao You
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
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12
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Wu D, Zhang X, Liu Y, Ma Y, Wang X, Wang X, Xu L. Chemiluminescence of off-line and on-line gold nanoparticle-catalyzed luminol system in the presence of flavonoid. LUMINESCENCE 2016; 32:666-673. [PMID: 27860239 DOI: 10.1002/bio.3236] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/13/2016] [Accepted: 09/20/2016] [Indexed: 11/07/2022]
Abstract
It was found that flavonoids could remarkably inhibit the chemiluminescence (CL) intensity of an off-line gold nanoparticle (AuNP)-catalyzed luminol-H2 O2 CL system. By contrast, flavonoids enhanced the CL intensity of an on-line AuNP-catalyzed luminol-H2 O2 CL system. In the off-line system, the AuNPs were prepared beforehand, whereas in the on-line system, AuNPs were produced by on-line mixing of luminol prepared in a buffer solution of NaHCO3 - Na2 CO3 and HAuCl4 with no need for the preliminary preparation of AuNPs. The on-line system had prominent advantages over the off-line system, namely a lowering of the background noise and improvements in the stability of the CL system. The results show that differences in the signal suppression effect of flavonoids on the off-line AuNP-catalyzed CL system are influenced by the combined action of a free radical scavenging effect and occupy-sites function; the latter was proved to be predominant using controlled experiments. Enhancement of the on-line system was ascribed to the presence of flavonoids promoting the on-line formation of AuNPs, which better catalyzed the luminol-H2 O2 CL reaction, and the enhancement activity of the six flavonoids increased with the increase in reducibility. This work broadens the scope of practical applications of an AuNP-catalyzed CL system.
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Affiliation(s)
- Dong Wu
- Department of Pharmacy, Fuyang People's Hospital, Fuyang, People's Republic of China
| | - Xiaoyue Zhang
- First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Yong Liu
- First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Yan Ma
- First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, People's Republic of China
| | - Xiaowu Wang
- Department of Clinical Laboratory, Fuyang Second People's Hospital, Fuyang, People's Republic of China
| | - Xiaojuan Wang
- Department of Pharmacy, Fuyang People's Hospital, Fuyang, People's Republic of China
| | - Liuxin Xu
- Department of Pharmacy, Fuyang People's Hospital, Fuyang, People's Republic of China
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13
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Naveenraj S, Mangalaraja RV, Wu JJ, Asiri AM, Anandan S. Gold Triangular Nanoprisms and Nanodecahedra: Synthesis and Interaction Studies with Luminol toward Biosensor Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11854-11860. [PMID: 27775363 DOI: 10.1021/acs.langmuir.6b02976] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Gold triangular nanoprisms and nanodecahedra (pentagonal bipyramids) were synthesized in the absence and presence of nanoseeds by a simple solvothermal synthesis through the reduction of Auric Chloride (HAuCl4) with poly(vinylpyrrolidone) (PVP) in N,N-dimethylformamide (DMF), respectively. These gold nanoparticles exhibit two plasmon resonance bands. The interaction of these gold nanoparticles with luminol was investigated using UV-vis and fluorescence spectroscopy since hefty number of environmental and biological sensors are based on the combination of luminol and gold nanoparticles. The gold nanoparticles quenches the fluorescence of luminol through a static quenching mechanism, i.e., ground state complex formation, which was confirmed by both absorption spectroscopy as well as time-resolved fluorescence spectroscopy. The Stern-Volmer quenching constant and the effective quenching constant determine that gold nanodecahedra has more interaction with luminol than that of triangular gold nanoprisms. The distance between the gold nanoparticles and luminol, calculated using FRET theory, is less than 8 nm, which indicates efficient energy transfer during interaction. These results are expected to be useful for the development of novel sensors.
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Affiliation(s)
- Selvaraj Naveenraj
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology , Tiruchirappalli 620015, India
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, University of Concepcion , Concepcion, Chile
| | | | - Jerry J Wu
- Department of Environmental Engineering and Science, Feng Chia University , Taichung 407, Taiwan
| | - Abdullah M Asiri
- The Center of Excellence for Advanced Materials Research, King Abdulaziz University , P.O. Box 80203, Jeddah 21413, Saudi Arabia
| | - Sambandam Anandan
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology , Tiruchirappalli 620015, India
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14
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Chemiluminescence reactions enhanced by silver nanoparticles and silver alloy nanoparticles: Applications in analytical chemistry. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.05.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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15
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A Highly Sensitive Sensor Based on Reduced Graphene Oxide, Carbon Nanotube and a Co(II) Complex Modified Carbon Paste Electrode: Simultaneous Determination of Isoprenaline, Captopril and Tryptophan. ELECTROANAL 2015. [DOI: 10.1002/elan.201500236] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Lima MJA, Fernandes RN, Tanaka AA, Reis BF. Development of a new procedure for the determination of captopril in pharmaceutical formulations employing chemiluminescence and a multicommuted flow analysis approach. LUMINESCENCE 2015; 31:288-94. [PMID: 26136382 DOI: 10.1002/bio.2960] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 05/12/2015] [Accepted: 05/15/2015] [Indexed: 01/07/2023]
Abstract
This paper describes a new technique for the determination of captopril in pharmaceutical formulations, implemented by employing multicommuted flow analysis. The analytical procedure was based on the reaction between hypochlorite and captopril. The remaining hypochlorite oxidized luminol that generated electromagnetic radiation detected using a homemade luminometer. To the best of our knowledge, this is the first time that this reaction has been exploited for the determination of captopril in pharmaceutical products, offering a clean analytical procedure with minimal reagent usage. The effectiveness of the proposed procedure was confirmed by analyzing a set of pharmaceutical formulations. Application of the paired t-test showed that there was no significant difference between the data sets at a 95% confidence level. The useful features of the new analytical procedure included a linear response for captopril concentrations in the range 20.0-150.0 µmol/L (r = 0.997), a limit of detection (3σ) of 2.0 µmol/L, a sample throughput of 164 determinations per hour, reagent consumption of 9 µg luminol and 42 µg hypochlorite per determination and generation of 0.63 mL of waste. A relative standard deviation of 1% (n = 6) for a standard solution containing 80 µmol/L captopril was also obtained.
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Affiliation(s)
- Manoel J A Lima
- Departamento de Química, Universidade Federal do Maranhão, São Luís, Brazil
| | - Ridvan N Fernandes
- Departamento de Química, Universidade Federal do Maranhão, São Luís, Brazil
| | - Auro A Tanaka
- Departamento de Química, Universidade Federal do Maranhão, São Luís, Brazil
| | - Boaventura F Reis
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Piracicaba, Brazil
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17
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Guo J, Yang Y, Hu X, Li Y. Spectrofluorimetric analysis of captopril based on its obstruction effect of the nanomaterial surface energy transfer between acridine orange and gold nanoparticles. Sci China Chem 2015. [DOI: 10.1007/s11426-014-5291-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Hasanzadeh M, Pournaghi-Azar MH, Shadjou N, Jouyban A. Electropolymerization of taurine on gold surface and its sensory application for determination of captopril in undiluted human serum. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 38:197-205. [PMID: 24656369 DOI: 10.1016/j.msec.2014.01.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 12/30/2013] [Accepted: 01/29/2014] [Indexed: 10/25/2022]
Abstract
Polytaurine film was electrodeposited on gold (Au) electrode through cyclic voltammetry from taurine and phosphate buffer solution. The electrocatalytic effect of polytaurine modified Au (PT/Au) electrode was investigated for electro-oxidation of captopril (CAP). Electrocatalytical activity of PT/Au electrode was studied using cyclic voltammetry (CV), chronoamperometry and differential pulse voltammetry (DPV). DPV was used to evaluate the analytical performance of CAP in the presence of phosphate buffer solution and good limit of detection was obtained by this sensor. The experimental conditions influencing the determination of CAP were optimized and under optimal conditions, the oxidation peak current was proportional to CAP concentration in the range of 0.06-0.2 μM, while the detection limit was 0.03 μM (S/N=3). The results revealed that PT promotes the rate of oxidation by increasing the peak current. Finally, the applicability of the method to direct assay of human serum is described. The proposed sensor was successfully applied to determine cadaverine in fish samples, yielding satisfactory results. The spiked recoveries were in the range of 96.0-105.0%.
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Affiliation(s)
- Mohammad Hasanzadeh
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664, Iran
| | | | - Nasrin Shadjou
- Biochemistry Department, Genetic and Metabolism Group, Pasteur Institute of Iran, P.O. Box 13164 Tehran, Iran
| | - Abolghasem Jouyban
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664, Iran.
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Applications in analytical chemistry using the attractive properties of non-ionic fluorosurfactants. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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20
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Zhang L, Lu B, Lu C, Lin JM. Determination of cysteine, homocysteine, cystine, and homocystine in biological fluids by HPLC using fluorosurfactant-capped gold nanoparticles as postcolumn colorimetric reagents. J Sep Sci 2013; 37:30-6. [PMID: 24302617 DOI: 10.1002/jssc.201300998] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 12/17/2022]
Abstract
We have demonstrated for the first time the suitability of fluorosurfactant-capped spherical gold nanoparticles as HPLC postcolumn colorimetric reagents for the direct assay of cysteine, homocysteine, cystine, and homocystine. The success of this work was based on the use of an on-line tris(2-carboxyethyl)phosphine reduction column for cystine and homocystine. Several parameters affecting the separation efficiency and the postcolumn colorimetric detection were thoroughly investigated. Under the optimized conditions, cysteine, homocysteine, cystine, and homocystine in human urine and plasma samples were determined. Detection limits for cysteine, homocysteine, cystine, and homocystine ranged from 0.16-0.49 μM. The accuracy in terms of recoveries ranged between 94.0-102.1%. This proposed method was rapid, inexpensive, and simple.
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Affiliation(s)
- Lijuan Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
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Permanganate–bromide–silver nanoparticles as a new chemiluminescence system and its application to captopril determination. Talanta 2013; 115:600-5. [DOI: 10.1016/j.talanta.2013.06.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 06/11/2013] [Accepted: 06/12/2013] [Indexed: 12/12/2022]
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22
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Qi Y, Li B. Enhanced effect of aggregated gold nanoparticles on luminol chemiluminescence system and its analytical application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 111:1-6. [PMID: 23602952 DOI: 10.1016/j.saa.2013.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Revised: 02/14/2013] [Accepted: 03/03/2013] [Indexed: 06/02/2023]
Abstract
Some organic compounds containing groups of OH, NH2, or SH, which could induce the aggregation of gold nanoparticles (AuNPs), were observed to enhance effectively the luminol-H2O2-2.6 nm AuNPs CL system. It was found that the aggregation of AuNPs was an important effect factor for the catalytic activity of AuNPs on luminol CL system. The aggregated AuNPs could effectively enhance luminol CL signal compared with the dispersed one. The enhanced effect was closely related to the sizes of AuNPs. Among the studied AuNPs with seven sizes, 2.6 nm AuNPs had the greatest enhancement effect on luminol CL system after its aggregation. The CL enhancement mechanism was investigated, and the marked enhancement of aggregated 2.6 nm AuNPs for luminol CL system was supposed to originate from the decrease of AuNPs' surface negative charge density compared to its dispersed state. For the luminol-H2O2-2.6 nm AuNPs CL system in the presence of organic compounds containing groups of OH, NH2, or SH, more than one factor played the role in influencing the CL intensity. It was found that the enhanced effect of aggregated 2.6 nm AuNPs induced by such organic compounds was much more significant than the inhibition effect of reducing groups of OH, NH2, or SH, which made it applicable for the determination of this kind of compounds.
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Affiliation(s)
- Yingying Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062, PR China
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23
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Iranifam M, Fathinia M, Sadeghi Rad T, Hanifehpour Y, Khataee AR, Joo SW. A novel selenium nanoparticles-enhanced chemiluminescence system for determination of dinitrobutylphenol. Talanta 2013; 107:263-9. [PMID: 23598221 DOI: 10.1016/j.talanta.2012.12.043] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 12/24/2012] [Accepted: 12/26/2012] [Indexed: 11/16/2022]
Abstract
A novel selenium nanoparticles (Se NPs)-amplified chemiluminescence (CL) reaction, Se NPs-potassium permanganate-dinitrobutylphenol (DNBP), for the determination of DNBP at gram per milliliter level is described. In the present study, it was found that direct reaction of DNBP with potassium permanganate (KMnO4) in the acidic mediums elicited light emission, which was greatly enhanced by selenium nanoparticles. Under optimum conditions, the CL intensity is linearly related to the concentration of DNBP in the range of 1.0×10(-7)-8.0×10(-5)g mL(-1) with a detection limit (3σ) of 3.1×10(-8) g mL(-1). The relative standard deviation for 11 determinations of 2.5×10(-5) gm L(-1) DNBP is 2.07%. The Se NPs were prepared by the chemical hydrothermal method. It was found that catalytic properties of Se NPs were higher than those of microparticles (MPs). In addition, scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the Se NPs. Appropriate sensitivity, selectivity and precision were among notable features of the proposed method. The method was successfully applied to the determination of DNBP in the water samples of different origins. Moreover, the possible mechanism for the new CL reaction was also discussed.
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Affiliation(s)
- M Iranifam
- Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, East Azerbaijan, Iran.
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Xiao Q, Gao H, Lu C, Yuan Q. Gold nanoparticle-based optical probes for sensing aminothiols. Trends Analyt Chem 2012. [DOI: 10.1016/j.trac.2012.07.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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25
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Mazloum-Ardakani M, Sheikh-Mohseni MA, Mirjalili BF, Zamani L. Simultaneous determination of captopril, acetaminophen and tryptophan at a modified electrode based on carbon nanotubes. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.09.021] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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