Relevant bibliographies by topics / Handheld Raman spectrometers

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  2. Dissertations / Theses
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Academic literature on the topic 'Handheld Raman spectrometers'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Handheld Raman spectrometers"

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Naglik, Beata, Maja Mroczkowska-Szerszeń, Magdalena Dumańska-Słowik, Lucyna Natkaniec-Nowak, Przemysław Drzewicz, Paweł Stach, and Grażyna Żukowska. "Fossil Resins–Constraints from Portable and Laboratory Near-infrared Raman Spectrometers." Minerals 10, no. 2 (January 25, 2020): 104. http://dx.doi.org/10.3390/min10020104.

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Comparative studies of fossil resins of various ages, botanical sources, geological environments, and provenience were provided via a handheld portable Near-Infrared (NIR)-Raman spectrometer and benchtop instrument both working with laser line 1064 nm. The recorded Raman spectra of individual fossil resins were found to be sufficiently similar irrespective to the device type applied, i.e., handheld or benchtop. Thus, the portable equipment was found to be a sufficient tool for the preliminary identification of resins based on botanical and geographical origin criteria. The observed height ratio of 1640/1440 cm−1 Raman bands did not correlate well with the ages of fossil resins. Hence, it may be assumed that geological conditions such as volcanic activity and/or hydrothermal heating are plausible factors accelerating the maturation of resins and cross-linking processes.
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Assi, S., A. Guirguis, S. Halsey, S. Fergus, and J. L. Stair. "Analysis of ‘legal high’ substances and common adulterants using handheld spectroscopic techniques." Analytical Methods 7, no. 2 (2015): 736–46. http://dx.doi.org/10.1039/c4ay02169j.

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Three handheld spectrometers, near-infrared (NIR), Raman and attenuated total reflectance Fourier transform-infrared (ATR-FT-IR) spectroscopy, were used for the identification of ‘legal high’ model mixtures and Internet products.
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Owens, Nicholas A., Lars B. Laurentius, Marc D. Porter, Qun Li, Sean Wang, and Delphi Chatterjee. "Handheld Raman Spectrometer Instrumentation for Quantitative Tuberculosis Biomarker Detection: A Performance Assessment for Point-of-Need Infectious Disease Diagnostics." Applied Spectroscopy 72, no. 7 (April 17, 2018): 1104–15. http://dx.doi.org/10.1177/0003702818770666.

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Techniques for the detection of disease biomarkers are key components in the protection of human health. While work over the last few decades has redefined the low-level measurement of disease biomarkers, the translation of these capabilities from the formal clinical setting to point-of-need (PON) usage has been much more limited. This paper presents the results of experiments designed to examine the potential utility of a handheld Raman spectrometer as a PON electronic reader for a sandwich immunoassay based on surface-enhanced Raman scattering (SERS). In so doing, the study herein used a recently developed procedure for the SERS detection of phospho-myo-inositol-capped lipoarabinomannan (PILAM) as a means to compare the performance of laboratory-grade and handheld instrumentation and, therefore, gauge the utility of the handheld instrument for PON deployment. Phospho-myo-inositol-capped lipoarabinomannan is a non-pathogenic simulant for mannose-capped lipoarabinomannan (ManLAM), which is an antigenic marker found in serum and other body fluids of individuals infected with tuberculosis (TB). The results of the measurements with the field-portable spectrometer were then compared to those obtained for the same samples when using a much more sensitive benchtop Raman spectrometer. The results, albeit under different operational settings for the two spectrometers (e.g., signal integration time), are promising in that the limit of detection found for PILAM spiked in human serum when using the handheld system (0.18 ng/mL) approached that of the benchtop instrument (0.032 ng/mL). This work also: (1) identified potential adaptations (e.g., optimization of the plasmonically enhanced response for measurement by the handheld unit through a change in the excitation wavelength) to tighten the gap in performance; and (2) briefly examined the next steps and potential processes required to move this immunoassay platform closer to PON utility.
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Lanzarotta, Adam, Mark Witkowski, and JaCinta Batson. "Identification of Opioids and Related Substances using Handheld Raman Spectrometers." Journal of Forensic Sciences 65, no. 2 (October 23, 2019): 421–27. http://dx.doi.org/10.1111/1556-4029.14217.

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Jehlička, Jan, Adam Culka, Markéta Baštová, Petr Bašta, and Jaroslav Kuntoš. "The Ring Monstrance from the Loreto treasury in Prague: handheld Raman spectrometer for identification of gemstones." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2082 (December 13, 2016): 20160042. http://dx.doi.org/10.1098/rsta.2016.0042.

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A miniature lightweight portable Raman spectrometer and a palm-sized device allow for fast and unambiguous detection of common gemstones mounted in complex jewels. Here, complex religious artefacts and the Ring Monstrance from the Loreto treasury (Prague, Czech Republic; eighteenth century) were investigated. These discriminations are based on the very good correspondence of the wavenumbers of the strongest Raman bands of the minerals. Very short laser illumination times and efficient collection of scattered light were sufficient to obtain strong diagnostic Raman signals. The following minerals were documented: quartz and its varieties, beryl varieties (emerald), corundum varieties (sapphire), garnets (almandine, grossular), diamond as well as aragonite in pearls. Miniature Raman spectrometers can be recommended for common gemmological work as well as for mineralogical investigations of jewels and cultural heritage objects whenever the antiquities cannot be transported to a laboratory. This article is part of the themed issue ‘Raman spectroscopy in art and archaeology’.
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Zettner, Alina, Ardian B. Gojani, Thomas Schmid, and Igor B. Gornushkin. "Evaluation of a Spatial Heterodyne Spectrometer for Raman Spectroscopy of Minerals." Minerals 10, no. 2 (February 24, 2020): 202. http://dx.doi.org/10.3390/min10020202.

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Spatial heterodyne spectroscopy (SHS) is a novel spectral analysis technique that is being applied for Raman spectroscopy of minerals. This paper presents the theoretical basis of SHS and its application for Raman measurements of calcite, quartz and forsterite in marble, copper ore and nickel ore, respectively. The SHS measurements are done using a broadband (518–686 nm) and resolving power R ≈ 3000 instrument. The spectra obtained using SHS are compared to those obtained by benchtop and modular dispersive spectrometers. It is found that SHRS performance in terms of resolution is comparable to that of the benchtop spectrometer and better than the modular dispersive spectrometer, while the sensitivity of SHRS is worse than that of a benchtop spectrometer, but better than that of a modular dispersive spectrometer. When considered that SHS components are small and can be packaged into a handheld device, there is interest in developing an SHS-based instrument for mobile Raman spectroscopy. This paper evaluates the possibility of such an application.
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Li Vigni, Mario, Caterina Durante, Sara Michelini, Marco Nocetti, and Marina Cocchi. "Preliminary Assessment of Parmigiano Reggiano Authenticity by Handheld Raman Spectroscopy." Foods 9, no. 11 (October 28, 2020): 1563. http://dx.doi.org/10.3390/foods9111563.

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Raman spectroscopy, and handheld spectrometers in particular, are gaining increasing attention in food quality control as a fast, portable, non-destructive technique. Furthermore, this technology also allows for measuring the intact sample through the packaging and, with respect to near infrared spectroscopy, it is not affected by the water content of the samples. In this work, we evaluate the potential of the methodology to model, by multivariate data analysis, the authenticity of Parmigiano Reggiano cheese, which is one of the most well-known and appreciated hard cheeses worldwide, with protected denomination of origin (PDO). On the other hand, it is also highly subject to counterfeiting. In particular, it is critical to assess the authenticity of grated cheese, to which, under strictly specified conditions, the PDO is extended. To this aim, it would be highly valuable to develop an authenticity model based on a fast, non-destructive technique. In this work, we present preliminary results obtained by a handheld Raman spectrometer and class-modeling (Soft Independent Modeling of Class Analogy, SIMCA), which are extremely promising, showing sensitivity and specificity of 100% for the test set. Moreover, another salient issue, namely the percentage of rind in grated cheese, was addressed by developing a multivariate calibration model based on Raman spectra. It was possible to obtain a prediction error around 5%, with 18% being the maximum content allowed by the production protocol.
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Hakonen, Aron, Kaiyu Wu, Michael Stenbæk Schmidt, Per Ola Andersson, Anja Boisen, and Tomas Rindzevicius. "Detecting forensic substances using commercially available SERS substrates and handheld Raman spectrometers." Talanta 189 (November 2018): 649–52. http://dx.doi.org/10.1016/j.talanta.2018.07.009.

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Menevseoglu, Ahmed, Didem P. Aykas, Beatriz Hatta-Sakoda, Victor Hugo Toledo-Herrera, and Luis E. Rodriguez-Saona. "Non-Invasive Monitoring of Ethanol and Methanol Levels in Grape-Derived Pisco Distillate by Vibrational Spectroscopy." Sensors 21, no. 18 (September 18, 2021): 6278. http://dx.doi.org/10.3390/s21186278.

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Handheld Raman and portable FT-IR spectroscopy devices were evaluated for fast and non-invasive determination of methanol and ethanol levels in Peruvian Pisco. Commercial Peruvian Pisco (n = 171) samples were kindly provided by the UNALM Alliance for Research in Alcohol and its Derivatives (Lima, Peru) and supplemented by purchases at grocery and online stores. Pisco spectra were collected on handheld Raman spectrometers equipped with either a 1064 nm or a 785 nm excitation laser and a portable infrared unit operating in transmission mode. The alcohol levels were determined by GC–MS. Calibration models used partial least-squares regression (PLSR) to develop prediction algorithms. GC–MS data revealed that 10% of Pisco samples had ethanol levels lower than 38%, indicating possible water dilution. Methanol levels ranged from 10 to 130 mg/100 mL, well below the maximum levels allowed for fruit brandies. Handheld Raman equipped with a 1064 nm excitation laser gave the best results for determining ethanol (SEP = 1.2%; RPre = 0.95) and methanol (SEP = 1.8 mg/100 mL; RPre = 0.93). Randomly selected Pisco samples were spiked with methanol (75 to 2800 mg/100 mL), and their Raman spectra were collected through their genuine commercial bottles. The prediction models gave an excellent performance (SEP = 98 mg/100 mL; RPre = 0.97), allowing for the non-destructive and non-contact determination of methanol and ethanol concentrations without opening the bottles.
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Sorak, Damir, Lars Herberholz, Sylvia Iwascek, Sedakat Altinpinar, Frank Pfeifer, and Heinz W. Siesler. "New Developments and Applications of Handheld Raman, Mid-Infrared, and Near-Infrared Spectrometers." Applied Spectroscopy Reviews 47, no. 2 (February 2012): 83–115. http://dx.doi.org/10.1080/05704928.2011.625748.

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Dissertations / Theses on the topic "Handheld Raman spectrometers"

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Kdýr, Šimon. "Určení strukturního stavu uhlíkaté hmoty metasedimentárních hornin pomocí Ramanovy spektrometrie." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-368995.

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Metamorphic processes can transform the organic matter in sedimentary rocks into structurally organized carbonaceous matter, in ideal conditions to graphite. In the centre of West Alpine arch, the metasedimentary rocks are rich in dispersed carbonaceous matter and were used in this thesis to specify the thermal range of metamorphism based on the structural state. Previous studies have used mainly the Raman spectrometers to determine the structural state of carbonaceous matter. Unfortunately this method doesn't allow in-situ analyses which, in addition to Earth studies, can be essential for studying other planetary bodies and moons of our solar system. As only the smallest and lightest instruments are required for analyses during potential planetary missions to Mars, it is important to verify that the small instruments are able to detect even the small concentrations of carbonaceous matter. Currently available miniature and portable Raman spectrometers have started to become more precise but are still not as precise as laboratory Raman microspectrometers. This thesis is divided into two parts. First part aims to duplicate the results from previous studies by Raman microspectrometers in the West Alpine arch. Furthermore, the excitation laser wave length dependence of spectral signs in carbonaceous...
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Book chapters on the topic "Handheld Raman spectrometers"

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Hargreaves, Michael D., Robert L. Green, Wayne Jalenak, Christopher D. Brown, and Craig Gardner. "Handheld Raman and FT-IR Spectrometers." In Infrared and Raman Spectroscopy in Forensic Science, 275–87. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119962328.ch5c.

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Hargreaves, Michael D. "Drugs of Abuse - Application of Handheld FT-IR and Raman Spectrometers." In Infrared and Raman Spectroscopy in Forensic Science, 339–49. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119962328.ch6a.

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Vedad, Jayson, Lauren Reilly, Ruel Z. B. Desamero, and Elmer-Rico E. Mojica. "Quantitative Analysis of Xylene Mixtures Using a Handheld Raman Spectrometer." In Raman Spectroscopy in the Undergraduate Curriculum, 129–52. Washington, DC: American Chemical Society, 2018. http://dx.doi.org/10.1021/bk-2018-1305.ch008.

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Conference papers on the topic "Handheld Raman spectrometers"

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Chandler, Lynn L., Bill Huang, and TaoTao Mu. "A smart handheld Raman spectrometer with cloud and AI deep learning algorithm for mixture analysis." In Next-Generation Spectroscopic Technologies XII, edited by Richard A. Crocombe, Luisa T. Profeta, and Abul K. Azad. SPIE, 2019. http://dx.doi.org/10.1117/12.2519139.

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Journal articles
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