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Hui K, Liu T, Yang ML, Tian AX, Ying J. Four polyoxomolybdated-based 3D compounds as supercapacitors and amperometric sensors. Mikrochim Acta 2024; 191:410. [PMID: 38900272 DOI: 10.1007/s00604-024-06457-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024]
Abstract
Four polyoxomolybdated compounds based on Tetp (Tetp = 4-[4-(2-Thiophen-2-yl-ethyl)-4H-[1, 2, 4]triazole-3-yl]-pyridine), namely [Zn(Tetp)2(H2O)2][(β-Mo8O26)0.5] (Zn-Mo8), [Co(Tetp)2(H2O)2][(β-Mo8O26)0.5] (Co-Mo8), [Cu4(Tetp)6(H2O)2]{H3[K(H2O)3](θ-Mo8O26)(Mo12O40)}·8H2O (Cu-Mo20) and [Cu3(Tetp)3][PMo12O40]·H2O (Cu-PMo12) are synthesized by hydrothermal methods and are used as electrode materials for supercapacitors(SCs) and electrochemical sensors. Inserting polyoxometalates (POMs) with redox active sites into transition metal compounds (TMCs) can improve the internal ion/electron transfer rate, thus effectively enhancing the electrochemical performance. Compared with the parent POMs, four compounds exhibit excellent electrochemical properties. In particular, Cu-PMo12 shows an excellent specific capacitance (812.3 F g-1 at 1 A g-1) and stability (94.42%), as well as a wide detection range (0.05 to 1250 µM) and a low detection limit (0.057 µM) for NO2- sensing.
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Affiliation(s)
- Kaili Hui
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, 121013, People's Republic of China
| | - Tao Liu
- College of Sciences, North China University of Science and Technology, Tangshan, Hebei, 063210, People's Republic of China
| | - Mengle L Yang
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, 121013, People's Republic of China.
| | - Aixiang X Tian
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, 121013, People's Republic of China.
| | - Jun Ying
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, 121013, People's Republic of China
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2
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Rai P, Mehrotra S, Gautam K, Verma R, Anbumani S, Patnaik S, Priya S, Sharma SK. A polylactic acid-carbon nanofiber-based electro-conductive sensing material and paper-based colorimetric sensor for detection of nitrates. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 38712986 DOI: 10.1039/d3ay02069j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Plastics are ubiquitous in today's lifestyle, and their indiscriminate use has led to the accumulation of plastic waste in landfills and oceans. The waste accumulates and breaks into micro-particles that enter the food chain, causing severe threats to human health, wildlife, and the ecosystem. Environment-friendly and bio-based degradable materials offer a sustainable alternative to the vastly used synthetic materials. Here, a polylactic acid and carbon nanofiber-based membrane and a paper-based colorimetric sensor have been developed. The membrane had a surface area of 3.02 m2 g-1 and a pore size of 18.77 nm. The pores were evenly distributed with a pore volume of 0.0137 cm3 g-1. The membrane was evaluated in accordance with OECD guidelines and was found to be safe for tested aquatic and terrestrial models. The activated PLA-CNF membrane was further used as a bio-based electrode for the electrochemical detection of nitrates (NO3-) in water samples with a detection limit of 0.046 ppm and sensitivity of 1.69 × 10-4 A ppm-1 mm-2, whereas the developed paper-based colorimetric sensor had a detection limit of 156 ppm for NO3-. This study presents an environment-friendly, low-carbon footprint disposable material for sensing applications as a sustainable alternative to plastics.
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Affiliation(s)
- Pawankumar Rai
- Food Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.
| | - Srishti Mehrotra
- Food Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
| | - Krishna Gautam
- Environmental Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
| | - Rahul Verma
- Drug & Chemical Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
| | - Sadasivam Anbumani
- Environmental Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
| | - Satyakam Patnaik
- Drug & Chemical Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
| | - Smriti Priya
- Systems Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Sandeep K Sharma
- Food Toxicology Group, CSIR - Indian Institute of Toxicology Research, Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India.
- Academy of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
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3
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Raucci A, Miglione A, Cimmino W, Cioffi A, Singh S, Spinelli M, Amoresano A, Musile G, Cinti S. Technical Evaluation of a Paper-Based Electrochemical Strip to Measure Nitrite Ions in the Forensic Field. ACS MEASUREMENT SCIENCE AU 2024; 4:136-143. [PMID: 38404486 PMCID: PMC10885323 DOI: 10.1021/acsmeasuresciau.3c00050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 02/27/2024]
Abstract
Nitrite is a compound used as a food additive for its preservative action and coloring capability, as well as an industrial agent for its antifreezing action and for preventing corrosion, and it is also used as a pharmaceutical in cyanide detoxification therapy. However, even recently, because of its high toxicity, it has been used as a murder and suicidal agent due to its affordability and ready availability. In this technical report, we describe an electrochemical paper-based device for selectively determining nitrite in complex biofluids, such as blood, cadaveric blood, vitreous humor, serum, plasma, and urine. The approach was validated in terms of the linearity of response, selectivity, and sensitivity, and the accuracy of the determination was verified by comparing the results with a chromatographic instrumental method. A linear response was observed in the micromolar range; the sensitivity of the method expressed as the limit of detection was 0.4 μM in buffer measurements. The simplicity of use, the portability of the device, and the performance shown make the approach suitable for detecting nitrite in complex biofluids, including contexts of forensic interest, such as murders or suicides in which nitrite is used as a toxic agent. Limits of detection of ca. 1, 2, 4, 5, 3, and 4 μM were obtained in vitreous humor, urine, serum and plasma, blood, and cadaveric blood, also highlighting a satisfactory accuracy comprised between 91 and 112%.
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Affiliation(s)
- Ada Raucci
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
| | - Antonella Miglione
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
| | - Wanda Cimmino
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
| | - Alessia Cioffi
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
| | - Sima Singh
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
| | - Michele Spinelli
- Department
of Chemical Sciences, University of Naples
Federico II, 80126 Naples, Italy
| | - Angela Amoresano
- Department
of Chemical Sciences, University of Naples
Federico II, 80126 Naples, Italy
| | - Giacomo Musile
- Department
of Diagnostics and Public Health, University
of Verona, P.le Scuro 10, 37134 Verona, Italy
| | - Stefano Cinti
- Department
of Pharmacy, University of Naples “Federico
II”, 80131 Naples, Italy
- BAT
Center—Interuniversity Center for Studies on Bioinspired Agro-Environmental
Technology, University of Naples “Federico
II”, 80055 Naples, Italy
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4
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Singh L, Ranjan N. Highly Selective and Sensitive Detection of Nitrite Ion by an Unusual Nitration of a Fluorescent Benzimidazole. J Am Chem Soc 2023; 145:2745-2749. [PMID: 36716209 DOI: 10.1021/jacs.2c10850] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nitrite (NO2-) is a physiologically significant anion having implications for cellular signaling. Here we report our serendipitous discovery of highly selective fluorescence-based nitrite sensing using a benzimidazole which stems from hitherto-unknown direct nitration of a benzimidazole using sodium nitrite. Using one- and two-dimensional NMR techniques, we elucidate the chemical structures of the new nitrated benzimidazoles and show differences in the nitration products using conventional nitration with nitric acid. We also show its utility in robust sensing of nitrite-containing samples.
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Affiliation(s)
- Lachhman Singh
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
| | - Nihar Ranjan
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Raebareli, New Transit Campus, Lucknow 226002, Uttar Pradesh, India
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5
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Weyermann C, Willis S, Margot P, Roux C. Towards more relevance in forensic science research and development. Forensic Sci Int 2023:111592. [PMID: 36775701 DOI: 10.1016/j.forsciint.2023.111592] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/13/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023]
Abstract
Many different issues have been identified in forensic science for more than 10 years. While quality management has often been suggested as a path forward, research is generally considered as an essential part of the solution. Through an overview of current forensic science research, this paper aims at evaluating if and how research answer the challenges forensic science is currently facing. While forensic related publications have massively increased over the years, approximately half of the publications were published in non-forensic sources, indicating that forensic science research tends to be led by other disciplines. Over the years, forensic science research has remained largely oriented towards methodological and technological development rather than relevance to the forensic science discipline and practice. Practical implementation of the techniques is rarely discussed from a forensic perspective, and thus research rarely move from the "proof-of-concept" stage to its utilisation in case investigation. The digital transformation also generated a massive increase of data, making it challenging to find the relevant pieces of information in the mass of "forensic" publications available on-line. Thus, we propose to refocus forensic science research on forensic fundamental and practical questions to strengthen the discipline and its impact on crime investigation and security issues. Our propositions represent an incentive to further discuss forensic science research and knowledge transmission through the definition of a common culture within the community, focusing on common fundamental knowledge such as a better understanding of the concept of trace and its case-based information content.
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Affiliation(s)
- Céline Weyermann
- Ecole des Sciences Criminelles, Université de Lausanne, Switzerland.
| | - Sheila Willis
- Leverhulme Research Center for Forensic Science, University of Dundee, UK
| | - Pierre Margot
- Ecole des Sciences Criminelles, Université de Lausanne, Switzerland
| | - Claude Roux
- Centre for Forensic Science, University of Technology Sydney, Australia
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6
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Chaisiwamongkhol K, Phonchai A, Pon-In S, Bunchuay T, Limbut W. A microplate spectrophotometric method for analysis of indole-3-carbinol in dietary supplements using p-dimethylaminocinnamaldehyde (DMACA) as a chromogenic reagent. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:3366-3374. [PMID: 36039897 DOI: 10.1039/d2ay01129h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work presents the development of a microplate spectrophotometric method for determination of indole-3-carbinol in dietary supplements. The colorimetric procedure is based on the reaction of indole-3-carbinol with the p-dimethylaminocinnamaldehyde (DMACA) reagent under acidic conditions. The absorbance of the colored product measured at 675 nm was used to determine the target analyte. To achieve optimal spectrophotometric performance, the DMACA reagent concentration, the hydrochloric acid concentration, and the reaction time were optimized. The developed technique performed well under the optimal conditions, with a linear calibration range of 30 to 300 mg L-1 and a high correlation coefficient (r2 = 0.9954). The limit of detection and limit of quantification were 7.8 mg L-1 and 26.2 mg L-1, respectively. This approach demonstrated good repeatability (intra- and inter-day precision) with a % RSD lower than 9.4%, good accuracy with acceptable relative recoveries in the range of 98 to 106%, and high sample throughput (24 detection per min). This simple, rapid, and multi-sample analysis approach for routine analysis of indole-3-carbinol has the potential to be used for the quality control of dietary supplements.
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Affiliation(s)
- Korbua Chaisiwamongkhol
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
- Center of Chemical Innovation for Sustainability (CIS), Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Apichai Phonchai
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Sunisa Pon-In
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Thanthapatra Bunchuay
- Department of Chemistry, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, 272 Rama VI Rd., Ratchathewi, Bangkok, 10400, Thailand
| | - Warakorn Limbut
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
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7
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Stability Enhancement of Laser-Scribed Reduced Graphene Oxide Electrodes Functionalized by Iron Oxide/Reduced Graphene Oxide Nanocomposites for Nitrite Sensors. JOURNAL OF COMPOSITES SCIENCE 2022. [DOI: 10.3390/jcs6080221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An iron oxide/reduced graphene oxide (ION-RGO) nanocomposite has been fabricated to functionalize a low-cost electrochemical nitrite sensor realized by light-scribed reduced graphene oxide (LRGO) electrodes on a PET substrate. To enhance the stability and adhesion of the electrode, the PET substrate was modified by RF oxygen plasma, and a thin layer of the cationic poly (diallyl dimethyl ammonium chloride) was deposited. Raman spectroscopy and scanning electron microscopy coupled to energy-dispersive X-ray spectroscopy (SEM-EDX) reveal that the light-scribing process successfully reduces graphene oxide while forming a porous multilayered structure. As confirmed by cyclic voltammetry, the LRGO electrochemical response to ferri-ferrocyanide and nitrite is significantly improved after functionalization with the ION-RGO nanocomposite film. Under optimized differential pulse voltammetry conditions, the LRGO/ION-RGO electrode responds linearly (R2 = 0.97) to nitrite in the range of 10–400 µM, achieving a limit of detection of 7.2 μM and sensitivity of 0.14 µA/µM. A single LRGO/ION-RGO electrode stands for 11 consecutive runs. The novel fabrication process leads to highly stable and reproducible electrodes for electrochemical sensors and thus offers a low-cost option for the rapid and sensitive detection of nitrite.
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8
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Polat F. Development of a simple analytical method for the determination of nitrite in waters using redox reaction and smartphone. ANAL SCI 2022; 38:1207-1212. [PMID: 35793000 DOI: 10.1007/s44211-022-00146-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 06/13/2022] [Indexed: 11/26/2022]
Abstract
In this study, it was aimed to perform the colorimetric determination of nitrite in waters using the redox reaction of iodide in acidic conditions with smartphone. The simple redox reaction of iodide and nitrite in an acidic medium was used instead of the conventional nitrite methods based on the formation of azo dye. The quantitative relationship between the yellow-colored iodine formed because of the reaction and nitrite was determined by the digital image-based colorimetric method (DIC). In the optimal experimental conditions, detection limit and R2 values were determined as 0.02 mg/L and 0.9925, respectively. New method (Redox-DIC method) was validated by the standard Griess Method for nitrite in lake waters. The perfect recovery results (94-112%) were calculated for lake, river, tap, and spring waters spiked at different concentrations, and very good (< 5.0%) percent relative standard deviation values were recorded. Unlike conventional nitrite methods, organic reagents and solvents were not used in this method. The method is fast, simple, and low cost.
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Affiliation(s)
- Fatih Polat
- Department of Laboratory Technology, Almus Vocational School, Tokat Gaziosmanpasa University, Tokat, Turkey.
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9
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Adsorption of Aqueous Iodide on Hexadecyl Pyridinium-Modified Bentonite Investigated Using an Iodine–Starch Complex. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10050196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The sorption affinity of iodide on organo-bentonite, modified with hexadecyl pyridinium (HDPy), was investigated with the iodine–starch method coupled with UV/Vis absorption spectroscopy. The iodine–starch complex method was optimized in terms of the reaction time and sample compositions, based on the UV/Vis absorbance. The batch sorption experiment for iodide on organo-bentonites, modified using two different loading amounts of HDPy, was conducted to analyze the influence of equilibrium time, liquid-to-solid ratio, and temperature, on the iodide sorption affinity. The experimental results regarding the removal capacity were further employed to derive the distribution coefficients of iodide on the organo-bentonites. The novelty of this work lies in the first application of the iodine–starch method coupled with UV/Vis absorption spectroscopy for analyzing the sorption behavior of iodide on modified bentonites. It is expected that the iodide-starch method can be complementarily employed for future research, with respect to the quantification of iodide.
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10
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Wang T, Xu X, Wang C, Li Z, Li D. A Novel Highly Sensitive Electrochemical Nitrite Sensor Based on a AuNPs/CS/Ti 3C 2 Nanocomposite. NANOMATERIALS 2022; 12:nano12030397. [PMID: 35159742 PMCID: PMC8840747 DOI: 10.3390/nano12030397] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/16/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023]
Abstract
Nitrite is common inorganic poison, which widely exists in various water bodies and seriously endangers human health. Therefore, it is very necessary to develop a fast and online method for the detection of nitrite. In this paper, we prepared an electrochemical sensor for highly sensitive and selective detection of nitrite, based on AuNPs/CS/MXene nanocomposite. The characterization of the nanocomposite was demonstrated by scanning electron microscopy (SEM), a transmission electron microscope (TEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Under the optimized conditions, the fabricated electrode showed good performance with the linear range of 0.5–335.5 μM and 335.5–3355 μM, the limit of detection is 69 nM, and the sensitivity is 517.8 and 403.2 μA mM−1 cm−2. The fabricated sensors also show good anti-interference ability, repeatability, and stability, and have the potential for application in real samples.
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Affiliation(s)
- Tan Wang
- National Innovation Center for Digital Fishery, China Agricultural University, Beijing 100083, China; (T.W.); (X.X.); (C.W.); (Z.L.)
- College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing 100083, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing 100083, China
| | - Xianbao Xu
- National Innovation Center for Digital Fishery, China Agricultural University, Beijing 100083, China; (T.W.); (X.X.); (C.W.); (Z.L.)
- College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing 100083, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing 100083, China
| | - Cong Wang
- National Innovation Center for Digital Fishery, China Agricultural University, Beijing 100083, China; (T.W.); (X.X.); (C.W.); (Z.L.)
- College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing 100083, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing 100083, China
| | - Zhen Li
- National Innovation Center for Digital Fishery, China Agricultural University, Beijing 100083, China; (T.W.); (X.X.); (C.W.); (Z.L.)
- College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing 100083, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing 100083, China
| | - Daoliang Li
- National Innovation Center for Digital Fishery, China Agricultural University, Beijing 100083, China; (T.W.); (X.X.); (C.W.); (Z.L.)
- College of Information and Electrical Engineering, China Agricultural University, Beijing 100083, China
- Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, China Agricultural University, Beijing 100083, China
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture, China Agricultural University, Beijing 100083, China
- Correspondence:
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11
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Thipwimonmas Y, Thiangchanya A, Phonchai A, Thainchaiwattana S, Jomsati W, Jomsati S, Tayayuth K, Limbut W. The Development of Digital Image Colorimetric Quantitative Analysis of Multi-Explosives Using Polymer Gel Sensors. SENSORS 2021; 21:s21238041. [PMID: 34884043 PMCID: PMC8659919 DOI: 10.3390/s21238041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/14/2021] [Accepted: 11/20/2021] [Indexed: 11/24/2022]
Abstract
Polymer gel sensors on 96-well plates were successfully used to detect four different multi-explosives, including 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), nitrite, and perchlorate. The products of reactions between the explosives and the polymer gel sensors were digitally captured, and the images were analyzed by a developed Red–Green–Blue (RGB) analyzer program on a notebook computer. RGB color analysis provided the basic color data of the reaction products for the quantification of the explosives. The results provided good linear range, sensitivity, limit of detection, limit of quantitation, specificity, interference tolerance, and recovery. The method demonstrated great potential to detect explosives by colorimetric analysis of digital images of samples on 96-well plates. It is possible to apply the proposed method for quantitative on-site field screening of multi-explosives.
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Affiliation(s)
- Yudtapum Thipwimonmas
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (Y.T.); (A.T.); (A.P.)
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Adul Thiangchanya
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (Y.T.); (A.T.); (A.P.)
| | - Apichai Phonchai
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (Y.T.); (A.T.); (A.P.)
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Sittipoom Thainchaiwattana
- Police Forensic Science Center 9, M.1, Chalung, Hat Yai, Songkhla 90110, Thailand; (S.T.); (W.J.); (S.J.)
| | - Wachirawit Jomsati
- Police Forensic Science Center 9, M.1, Chalung, Hat Yai, Songkhla 90110, Thailand; (S.T.); (W.J.); (S.J.)
| | - Sunisa Jomsati
- Police Forensic Science Center 9, M.1, Chalung, Hat Yai, Songkhla 90110, Thailand; (S.T.); (W.J.); (S.J.)
| | - Kunanunt Tayayuth
- Science Park, Hat Yai Campus of Extension Southern Institute of Science Park, Prince of Songkla University, Moo 6, Hat Yai, Songkhla 90110, Thailand;
| | - Warakorn Limbut
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; (Y.T.); (A.T.); (A.P.)
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Center of Excellence for Trace Analysis and Biosensors (TAB-CoE), Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
- Correspondence: ; Tel.: +66-74-288563
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12
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Cost-Effective Foam-Based Colorimetric Sensor for Roadside Testing of Alcohol in Undiluted Saliva. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9120334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A novel foam-based colorimetric alcohol sensor was developed for the detection of alcohol in saliva. Detection was based on the color change of a potassium dichromate-sulfuric acid solution absorbed by melamine foam. In the presence of alcohol, the orange colorimetric sensor changed color to brown, green and, ultimately, blue, depending on the concentration of alcohol in the sample. The response of the proposed sensor toward alcohol was linear from 0.10 to 2.5% v/v. The limit of detection was 0.03% v/v. Alcohol concentration could be determined using the naked eye in the range of 0.00 to 10% v/v. The developed alcohol sensor presented good operational accuracy (RSD = 0.30–1.90%, n = 8) and good stability for 21 days when stored at 25 °C and 75 days when stored at 4 °C. The results of alcohol detection with the developed sensor showed no significant difference from the results of spectrophotometric detection at a 95% confidence level (p > 0.05). The sensor was easy to use, small, inexpensive and portable, enabling drivers to accurately measure their own blood alcohol level and providing convenient speed in forensic applications.
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Zhai T, Li R, Zhang N, Zhao L, He M, Tan L. Simultaneous Detection of Sulfite and Nitrite on Graphene Oxide Nanoribbons‐gold Nanoparticles Composite Modified Electrode. ELECTROANAL 2021. [DOI: 10.1002/elan.202100525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Tingting Zhai
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 PR China
| | - Rui Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 PR China
| | - Ningning Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 PR China
| | - Lixin Zhao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 PR China
| | - Mengting He
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 PR China
| | - Liang Tan
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education of China), College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 PR China
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