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Bugeja N, Oliver C, McGrath N, McGuire J, Yan C, Carlysle-Davies F, Reid M. Teaching old presumptive tests new digital tricks with computer vision for forensic applications. DIGITAL DISCOVERY 2023; 2:1143-1151. [PMID: 38013815 PMCID: PMC10408571 DOI: 10.1039/d3dd00066d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 06/26/2023] [Indexed: 11/29/2023]
Abstract
Presumptive (or 'spot') tests have served forensic scientists, law enforcement, and legal practitioners for over a hundred years. Yet, the intended design of such tests, enabling quick identification of drugs by-eye, also hides their full potential. Here, we report the development and application of time-resolved imaging methods of reactions attending spot tests for amphetamines, barbiturates, and benzodiazepines. Analysis of the reaction videos helps distinguish drugs within the same structural class that, by-eye, are judged to give the same qualitative spot test result. It is envisaged that application of these results will bridge the existing suite of field and lab-based confirmatory forensic tests, and support a broader range of colorimetric sensing technologies.
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Affiliation(s)
- Nathalie Bugeja
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Cameron Oliver
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Nicole McGrath
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Jake McGuire
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | - Chunhui Yan
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
| | | | - Marc Reid
- Department of Pure and Applied Chemistry, University of Strathclyde Glasgow UK
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2
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Barzallo D, Benavides J, Cerdà V, Palacio E. Multifunctional Portable System Based on Digital Images for In-Situ Detecting of Environmental and Food Samples. Molecules 2023; 28:molecules28062465. [PMID: 36985437 PMCID: PMC10051621 DOI: 10.3390/molecules28062465] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/21/2023] [Accepted: 02/28/2023] [Indexed: 03/30/2023] Open
Abstract
The development of a portable device created by 3D printing for colorimetric and fluorometric measurements is an efficient tool for analytical applications in situ or in the laboratory presenting a wide field of applications in the environmental and food field. This device uses a light-emitting diode (LED) as radiation source and a webcam as a detector. Digital images obtained by the interaction between the radiation source and the sample were analyzed using a programming language developed in Matlab (Mathworks Inc., Natick, MA, USA), which builds the calibration curves in real-time using the RGB colour model. In addition, the entire system is connected to a notebook which serves as an LED and detector power supply without the need for any additional power source. The proposed device was used for the determination in situ of norfloxacin, allura red, and quinine in water and beverages samples, respectively. For the validation of the developed system, the results obtained were compared with a conventional spectrophotometer and spectrofluorometer respectively with a t-test at a 95% confidence level, which provides satisfactory precision and accuracy values.
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Affiliation(s)
- Diego Barzallo
- Environmental Analytical Chemistry Group, Department of Chemistry, University of the Balearic Islands, 07122 Palma, Spain
| | - Jorge Benavides
- Department of Electrical and Electronic Engineering, Universidad del Valle, Cali 760042, Colombia
| | | | - Edwin Palacio
- Environmental Analytical Chemistry Group, Department of Chemistry, University of the Balearic Islands, 07122 Palma, Spain
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3
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Visually detecting cyanide ion in aqueous solution sensitively and selectively using a merocyanine salt with the help of a smartphone. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130757] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Schell J, McCauley SC, Glaser R. Video colorimetry of single-chromophore systems based on vector analysis in the 3D color space: Unexpected hysteresis loops in oscillating chemical reactions. Talanta 2020; 220:121303. [PMID: 32928377 DOI: 10.1016/j.talanta.2020.121303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 11/19/2022]
Abstract
Colorimetry, the quantitative determination of color, usually of a digital image, has useful applications in diverse areas of research. Many methods have been proposed for translating the RGB data of an image to obtain concentration information. Among the many methods for RGB analysis, we focus on the vector projection method (VP), which is based on a vector analysis in 3D RGB color space. This method has the major advantages of being conceptually intelligible and generalizable to various systems. For solutions with variable concentrations of one chromophore, we will show that the analysis of the trace in RGB color space allows for a judgment about the reliability of the linear concentration dependence of the chromapostasi parameter. We discuss the theoretical underpinnings of the method in two test cases, a simple dye solution and a titration of an organic acid with phenolphthalein indicator. The VP method was then applied to the Ce-catalyzed Belousov-Zhabotinsky reaction with the expectation that the colorimetry would quantify [Ce4+] oscillations. Surprisingly, the 3D color space analysis revealed hysteresis loops and the origin and implications of this observation are discussed.
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Affiliation(s)
- Joseph Schell
- Department of Chemistry, Missouri University of Science and Technology, Rolla, MO, 65409, USA; Department of Chemistry, University of Missouri, Columbia, MO, 65211, USA
| | - Sara C McCauley
- Department of Chemistry, Missouri University of Science and Technology, Rolla, MO, 65409, USA
| | - Rainer Glaser
- Department of Chemistry, Missouri University of Science and Technology, Rolla, MO, 65409, USA.
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5
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Apak R, Çekiç SD, Üzer A, Çapanoğlu E, Çelik SE, Bener M, Can Z, Durmazel S. Colorimetric sensors and nanoprobes for characterizing antioxidant and energetic substances. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:5266-5321. [PMID: 33170182 DOI: 10.1039/d0ay01521k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of analytical techniques for antioxidant compounds is important, because antioxidants that can inactivate reactive species and radicals are health-beneficial compounds, also used in the preservation of food and protection of almost every kind of organic substance from oxidation. Energetic substances include explosives, pyrotechnics, propellants and fuels, and their determination at bulk/trace levels is important for the safety and well-being of modern societies exposed to various security threats. Most of the time, in field/on site detection of these important analytes necessitates the use of colorimetric sensors and probes enabling naked-eye detection, or low-cost and easy-to-use fluorometric sensors. The use of nanosensors brings important advantages to this field of analytical chemistry due to their various physico-chemical advantages of increased surface area, surface plasmon resonance absorption of noble metal nanoparticles, and superior enzyme-mimic catalytic properties. Thus, this critical review focuses on the design strategies for colorimetric sensors and nanoprobes in characterizing antioxidant and energetic substances. In this regard, the main themes and properties in optical sensor design are defined and classified. Nanomaterial-based optical sensors/probes are discussed with respect to their mechanisms of operation, namely formation and growth of noble metal nanoparticles, their aggregation and disaggregation, displacement of active constituents by complexation or electrostatic interaction, miscellaneous mechanisms, and the choice of metallic oxide nanoparticles taking part in such formulations.
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Affiliation(s)
- Reşat Apak
- Analytical Chemistry Division, Department of Chemistry, Faculty of Engineering, Istanbul University-Cerrahpaşa, Avcilar 34320, Istanbul, Turkey.
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Sriprom W, Choodum A, Phawachalotorn C, Wongniramaikul W, Limsakul W. Tetramethylammonium Hydroxide-doped Starch Film as a Colorimetric Sensor for Trinitrotoluene Detection. ANAL SCI 2020; 36:1261-1267. [PMID: 32475897 DOI: 10.2116/analsci.20p117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A tetramethylammonium hydroxide (TMAH)-doped starch film was developed for trinitrotoluene (TNT) detection. A purple Janowsky anion was obtained from the reaction of TNT with released TMAH. When the film was used in conjunction with digital image colorimetry (DIC), rapid quantitative analysis of TNT was achieved. The Red-Green-Blue (RGB) intensities analyzed from digital photographs of the purple product were used to establish calibration curves for TNT. A wide linear range (2.5 to 50 mgL-1) with good linearity (R2 > 0.99) was achieved for the quantification of TNT. Good precision (1.73 to 3.74%RSD) was obtained for inter-day tests (n = 5). The films were applied to test four post-blast soil samples and two positive results were observed. The concentrations quantified by DIC were in good agreement with spectrophotometry. The film was able to be stored in a freezer for 3 months with <4.3% change in performance.
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Affiliation(s)
- Wilasinee Sriprom
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University
| | - Aree Choodum
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University
| | - Chanadda Phawachalotorn
- Department of Applied Science and Business Management, King Mongkut's Institute of Technology Ladkrabang, Prince of Chumphon Campus
| | - Worawit Wongniramaikul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University.,Research Program: The Development of Management System for Reduction and Control of Water Contamination and Distribution in Songkhla Lake Basin and the Western Coastline of the South of Thailand, Center of Excellence on Hazardous Substance Management (HSM)
| | - Wadcharawadee Limsakul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University
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Milligan K, Shand NC, Graham D, Faulds K. Detection of Multiple Nitroaromatic Explosives via Formation of a Janowsky Complex and SERS. Anal Chem 2020; 92:3253-3261. [PMID: 31927940 PMCID: PMC7145293 DOI: 10.1021/acs.analchem.9b05062] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 01/13/2020] [Indexed: 11/30/2022]
Abstract
Military-grade explosives such as 2,4,6-trinitroluene (TNT) are still a major worldwide concern in terms of terror threat and environmental impact. The most common methods currently employed for the detection of explosives involve colorimetric tests, which are known to be rapid and portable; however, they often display false positives and lack sensitivity. Other methods used include ion mobility mass spectrometry, gas chromatography-mass spectrometry (GC-MS), and liquid chromatography-mass spectrometry (LC-MS), which despite producing more reliable results often require large, expensive instrumentation and specially trained staff. Here we demonstrate an alternative approach that utilizes the formation of a colored Janowsky complex with nitroaromatic explosives through reaction of the enolate ion of 3-mercapto-2-butanone. The colored complex is formed rapidly and can then be detected sensitively using surface-enhanced Raman scattering (SERS). We demonstrate that SERS can be used as a quick, sensitive, and selective technique for the detection of 2,4,6-trinitrotoluene (TNT), hexanitrostillbene (HNS), and 2,4,6-trinitrophenylmethylnitramine (tetryl) with a detection limit of 6.81 ng mL-1 achieved for TNT, 17.2 ng mL-1 for tetryl, and 135.1 ng mL-1 for HNS. This method of detection also requires minimal sample preparation, can be done in a solution-based format, and utilizes the same precursor reagents for complex formation with each of the explosives which can then be identified due to the specificity of the unique SERS response obtained. We demonstrate the ability to simultaneously identify three explosive compounds within a total analysis time of 10 min. This method of detection shows promise for the development of rapid and portable SERS-based assays which can be utilized in the field in order to achieve reliable and quantitative detection.
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Affiliation(s)
- Kirsty Milligan
- Department
of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, United Kingdom
| | - Neil C. Shand
- Defence
Science Technology Laboratory (DSTL), Porton Down, Salisbury SP4 0JQ, United Kingdom
| | - Duncan Graham
- Department
of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, United Kingdom
| | - Karen Faulds
- Department
of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, 99 George Street, Glasgow G1 1RD, United Kingdom
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8
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Peng B, Zhou J, Xu J, Fan M, Ma Y, Zhou M, Li T, Zhao S. A smartphone-based colorimetry after dispersive liquid–liquid microextraction for rapid quantification of calcium in water and food samples. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104072] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Li ZH, Han D, Yang CJ, Zhang TY, Yu HQ. Probing operational conditions of mixing and oxygen deficiency using HSV color space. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 232:985-992. [PMID: 33395767 DOI: 10.1016/j.jenvman.2018.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/25/2018] [Accepted: 12/08/2018] [Indexed: 06/12/2023]
Abstract
In this work, the relationship between sludge color and operational conditions was studied. It was found that the coordinates H and S of the HSV color space well correlated with biological status and the operational conditions of mixing and oxygen deficiency, and a coefficient of variation (CVH/S) of the ratio of H to S in sludge cake images was derived. A smaller CVH/S indicated better mixing conditions based on the observations of four laboratory-scale experiments and two full scale WWTPs, which can be used as a promising index for the monitoring of mixing condition. The coordinate oxygen uptake rate (OURq) of the respirogram space showed similar trend as CVH/S, and analysis of microbial community also showed that CVH/S could indicate changes of biological community including species and richness. These findings suggested that CVH/S is a biological meaningful index for detecting the effect of changing operational conditions, which gives a key to quantify a large number of empirical rules accumulated in the past. Furthermore, it promotes the Internet of Things (IoT) application to the management of WWTPs, as color is readily available with MEMS (Micro-Electro-Mechanical Systems) sensors such as smart phones.
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Affiliation(s)
- Zhi-Hua Li
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China; CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China, Hefei, 230026, China.
| | - Dong Han
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Cheng-Jian Yang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Tian-Yu Zhang
- Department of Mathematical Sciences, Montana State University, Bozeman, MT, 59717-2400, USA
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science & Technology of China, Hefei, 230026, China.
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10
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Choodum A, Sriprom W, Wongniramaikul W. Portable and selective colorimetric film and digital image colorimetry for detection of iron. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 208:40-47. [PMID: 30292149 DOI: 10.1016/j.saa.2018.09.062] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/03/2018] [Accepted: 09/30/2018] [Indexed: 06/08/2023]
Abstract
Iron is an important trace element in environmental and biological systems, the development of simple and selective methods for the determination of iron is important. In this work, completely biodegradable tapioca starch was introduced as the substrate to entrap standard chromogenic probes (1,10-phenanthroline) for fabrication of a novel colorimetric sensor for ferrous. A clear plasticized thin film from tapioca starch was fabricated inside a small plastic tube as a portable test kit. A red complex was obtained by exposing the film to a ferrous solution, while no color changes were obtained with various other ions, indicating excellent selectivity. The developed films were applied in conjunction with a digital image colorimetry for quantification of ferrous. Calculated molecular absorption of the red complex showed the widest linear range (0 to 10 mg L-1) with good linearity (R2 < 0.9934) with ferrous concentrations. The developed method provided good inter-day precision (1.75 to 3.97%RSD, 5 days 15 sensors), good accuracy (+2.35% to +4.57% relative error), and low detection limit (0.09 ± 0.01 mg L-1). The concentrations of ferrous ion in soil and water samples quantified by the developed method were not significantly different from atomic absorption spectrophotometry at 95% confidence level. The films were stable for at least three months.
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Affiliation(s)
- Aree Choodum
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand.
| | - Wilasinee Sriprom
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand
| | - Worawit Wongniramaikul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket 83120, Thailand; Research Program: The Development of Management System for Reduction and Control of Water Contamination and Distribution in Songkhla Lake Basin and the Western Coastline of the South of Thailand, Center of Excellence on Hazardous Substance Management (HSM), Bangkok 10330, Thailand
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11
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A biodegradable colorimetric film for rapid low-cost field determination of formaldehyde contamination by digital image colorimetry. Food Chem 2018; 249:154-161. [DOI: 10.1016/j.foodchem.2018.01.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 11/11/2017] [Accepted: 01/02/2018] [Indexed: 11/20/2022]
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12
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Khalili Moghaddam G, Lowe CR. Smartphone-based quantitative measurements on holographic sensors. PLoS One 2017; 12:e0187467. [PMID: 29141008 PMCID: PMC5687774 DOI: 10.1371/journal.pone.0187467] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 10/22/2017] [Indexed: 11/24/2022] Open
Abstract
The research reported herein integrates a generic holographic sensor platform and a smartphone-based colour quantification algorithm in order to standardise and improve the determination of the concentration of analytes of interest. The utility of this approach has been exemplified by analysing the replay colour of the captured image of a holographic pH sensor in near real-time. Personalised image encryption followed by a wavelet-based image compression method were applied to secure the image transfer across a bandwidth-limited network to the cloud. The decrypted and decompressed image was processed through four principal steps: Recognition of the hologram in the image with a complex background using a template-based approach, conversion of device-dependent RGB values to device-independent CIEXYZ values using a polynomial model of the camera and computation of the CIEL*a*b* values, use of the colour coordinates of the captured image to segment the image, select the appropriate colour descriptors and, ultimately, locate the region of interest (ROI), i.e. the hologram in this case, and finally, application of a machine learning-based algorithm to correlate the colour coordinates of the ROI to the analyte concentration. Integrating holographic sensors and the colour image processing algorithm potentially offers a cost-effective platform for the remote monitoring of analytes in real time in readily accessible body fluids by minimally trained individuals.
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Affiliation(s)
- Gita Khalili Moghaddam
- Institute of Biotechnology, Department of Chemical Engineering and Biotechnology, Tennis Court Road, University of Cambridge, Cambridge, United Kingdom
| | - Christopher Robin Lowe
- Institute of Biotechnology, Department of Chemical Engineering and Biotechnology, Tennis Court Road, University of Cambridge, Cambridge, United Kingdom
- * E-mail:
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13
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Apyari VV, Gorbunova MV, Isachenko AI, Dmitrienko SG, Zolotov YA. Use of household color-recording devices in quantitative chemical analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2017. [DOI: 10.1134/s106193481711003x] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Choodum A, Malathong K, NicDaeid N, Limsakul W, Wongniramaikul W. A cost effective hydrogel test kit for pre and post blast trinitrotoluene. Forensic Sci Int 2016; 266:202-208. [DOI: 10.1016/j.forsciint.2016.05.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 05/19/2016] [Accepted: 05/30/2016] [Indexed: 11/29/2022]
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15
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Meelapsom R, Jarujamrus P, Amatatongchai M, Chairam S, Kulsing C, Shen W. Chromatic analysis by monitoring unmodified silver nanoparticles reduction on double layer microfluidic paper-based analytical devices for selective and sensitive determination of mercury(II). Talanta 2016; 155:193-201. [PMID: 27216673 DOI: 10.1016/j.talanta.2016.04.037] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/18/2016] [Accepted: 04/19/2016] [Indexed: 10/21/2022]
Abstract
This study demonstrates chromatic analysis based on a simple red green blue (RGB) color model for sensitive and selective determination of mercury(II). The analysis was performed by monitoring the color change of a microfluidic Paper-based Analytical Device (µPAD). The device was fabricated by using alkyl ketene dimer (AKD)-inkjet printing and doped with unmodified silver nanoparticles (AgNPs) which were disintegrated when being exposed to mercury(II). The color intensity was detected by using an apparatus consisting of a digital camera and a homemade light box generating constant light intensity. A progressive increase in color intensity of the tested area on the µPAD (3.0mm) was observed with increasing mercury(II) concentration. The developed system enabled quantification of mercury(II) at low concentration with the detection limit of 0.001mgL(-1) (3 SD blank/slope of the calibration curve) and small sample volume uptake (2µL). The linearity range of the calibration curve in this technique was demonstrated from 0.05 to 7mgL(-1) (r(2)=0.998) with good precision (RSD less than 4.1%). Greater selectivity towards mercury(II) compared with potential interference ions was also observed. Furthermore, the percentage recoveries of spiked water samples were in an acceptable range which was in agreement with the values obtained from the conventional method utilizing cold vapor atomic absorption spectrometer (CVAAS). The proposed technique allows a rapid, simple, sensitive and selective analysis of trace mercury(II) in water samples.
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Affiliation(s)
- Rattapol Meelapsom
- Department of Chemistry and Center of Excellent for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Purim Jarujamrus
- Department of Chemistry and Center of Excellent for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand.
| | - Maliwan Amatatongchai
- Department of Chemistry and Center of Excellent for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Sanoe Chairam
- Department of Chemistry and Center of Excellent for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Chadin Kulsing
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Wei Shen
- Department of Chemical Engineering, Institute, Monash University, Clayton Campus, Melbourne VIC 3800, Australia
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16
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On-site semi-quantitative analysis for ammonium nitrate detection using digital image colourimetry. Sci Justice 2015; 55:437-45. [DOI: 10.1016/j.scijus.2015.05.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 04/30/2015] [Accepted: 05/04/2015] [Indexed: 11/30/2022]
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17
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Capitán-Vallvey LF, López-Ruiz N, Martínez-Olmos A, Erenas MM, Palma AJ. Recent developments in computer vision-based analytical chemistry: A tutorial review. Anal Chim Acta 2015; 899:23-56. [DOI: 10.1016/j.aca.2015.10.009] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 10/07/2015] [Accepted: 10/08/2015] [Indexed: 12/18/2022]
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18
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Grudpan K, Kolev SD, Lapanantnopakhun S, McKelvie ID, Wongwilai W. Applications of everyday IT and communications devices in modern analytical chemistry: A review. Talanta 2015; 136:84-94. [DOI: 10.1016/j.talanta.2014.12.042] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 12/24/2014] [Accepted: 12/26/2014] [Indexed: 11/27/2022]
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19
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Romolo FS, Ferri E, Mirasoli M, D'Elia M, Ripani L, Peluso G, Risoluti R, Maiolini E, Girotti S. Field detection capability of immunochemical assays during criminal investigations involving the use of TNT. Forensic Sci Int 2015; 246:25-30. [PMID: 25460104 DOI: 10.1016/j.forsciint.2014.10.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 10/15/2014] [Accepted: 10/25/2014] [Indexed: 01/22/2023]
Affiliation(s)
- Francesco Saverio Romolo
- Legal Medicine Section-SAIMLAL Department, SAPIENZA University of Rome, Viale Regina Elena, 336, 00161 Roma, Italy; Institut de Police Scientifique, Université de Lausanne, Batiment Batochimie, CH-1015 Lausanne, Switzerland.
| | - Elida Ferri
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 15, 40127 Bologna, Italy
| | - Mara Mirasoli
- Department of Chemistry, University of Bologna, Via Selmi, 2, 40126 Bologna, Italy
| | - Marcello D'Elia
- Emilia Romagna Regional Bureau of Scientific Police, Via Volto Santo 3, 40123 Bologna, Italy
| | - Luigi Ripani
- Scientific Investigation Unit, Carabinieri Roma, Viale Tor di Quinto, 151, 00191 Roma, Italy
| | - Giuseppe Peluso
- Scientific Investigation Unit, Carabinieri Roma, Viale Tor di Quinto, 151, 00191 Roma, Italy
| | - Roberta Risoluti
- Department of Chemistry, SAPIENZA University of Rome, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Elisabetta Maiolini
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 15, 40127 Bologna, Italy
| | - Stefano Girotti
- Department of Pharmacy and Biotechnology, University of Bologna, Via San Donato 15, 40127 Bologna, Italy
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Smart phone: A popular device supports amylase activity assay in fisheries research. Food Chem 2014; 163:87-91. [DOI: 10.1016/j.foodchem.2014.04.080] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 02/13/2014] [Accepted: 04/21/2014] [Indexed: 11/17/2022]
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21
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Colorimetric detection with aptamer-gold nanoparticle conjugates coupled to an android-based color analysis application for use in the field. Talanta 2014; 121:247-55. [DOI: 10.1016/j.talanta.2013.12.062] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 12/23/2013] [Accepted: 12/24/2013] [Indexed: 11/16/2022]
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22
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Choodum A, Parabun K, Klawach N, Daeid NN, Kanatharana P, Wongniramaikul W. Real time quantitative colourimetric test for methamphetamine detection using digital and mobile phone technology. Forensic Sci Int 2014; 235:8-13. [DOI: 10.1016/j.forsciint.2013.11.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 11/18/2013] [Accepted: 11/30/2013] [Indexed: 10/25/2022]
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23
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Lodha A, Pandya A, Sutariya PG, Menon SK. A smart and rapid colorimetric method for the detection of codeine sulphate, using unmodified gold nanoprobe. RSC Adv 2014. [DOI: 10.1039/c4ra06269h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, we reported unique optical and electrochemical properties of citrate-stabilized gold nanoparticles (AuNPs) as a probe for smartphone-assisted, on-spot detection of codeine sulphate in toxicological screening with high sensitivity (0.9 μM).
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Affiliation(s)
- Anand Lodha
- Department of Forensic Science
- School of Sciences
- Gujarat University
- Ahmedabad, India
| | - Alok Pandya
- Institute of Life Sciences
- Ahmedabad University
- Ahmedabad, India
| | | | - Shobhana K. Menon
- Department of Forensic Science
- School of Sciences
- Gujarat University
- Ahmedabad, India
- Department of Chemistry
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Thanakiatkrai P, Yaodam A, Kitpipit T. Age estimation of bloodstains using smartphones and digital image analysis. Forensic Sci Int 2013; 233:288-97. [DOI: 10.1016/j.forsciint.2013.09.027] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 09/26/2013] [Accepted: 09/30/2013] [Indexed: 01/25/2023]
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25
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Using the iPhone as a device for a rapid quantitative analysis of trinitrotoluene in soil. Talanta 2013; 115:143-9. [DOI: 10.1016/j.talanta.2013.04.037] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Revised: 04/12/2013] [Accepted: 04/16/2013] [Indexed: 11/17/2022]
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