Provenance studies of Kościuszko banknotes —One of the oldest paper banknotes in Europe—Using Raman spectroscopy in conjunction with other analytical techniques

2019 ◽  
Vol 51 (9) ◽  
pp. 1903-1912
Author(s):  
Anna Klisińska‐Kopacz ◽  
Katarzyna Lech ◽  
Julio M. Hoyo‐Meléndez ◽  
Agata Mendys ◽  
Anda Jaworucka‐Drath ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Analytical Techniques ◽  
Provenance Studies

scholarly journals Authentication of the Botanical and Geographical Origin and Detection of Adulteration of Olive Oil Using Gas Chromatography, Infrared and Raman Spectroscopy Techniques: A Review

Foods ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1565
Author(s):  
Eleni Kakouri ◽  
Panagiota-Kyriaki Revelou ◽  
Charalabos Kanakis ◽  
Dimitra Daferera ◽  
Christos S. Pappas ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Raman Spectroscopy ◽  
Olive Oil ◽  
Nutritional Value ◽  
Review Paper ◽  
Geographical Origin ◽  
Analytical Techniques ◽  
Volatile Fraction ◽  
Olive Oils ◽  
Infrared And Raman Spectroscopy

Olive oil is among the most popular supplements of the Mediterranean diet due to its high nutritional value. However, at the same time, because of economical purposes, it is also one of the products most subjected to adulteration. As a result, authenticity is an important issue of concern among authorities. Many analytical techniques, able to detect adulteration of olive oil, to identify its geographical and botanical origin and consequently guarantee its quality and authenticity, have been developed. This review paper discusses the use of infrared and Raman spectroscopy as candidate tools to examine the authenticity of olive oils. It also considers the volatile fraction as a marker to distinguish between different varieties and adulterated olive oils, using SPME combined with gas chromatography technique.

scholarly journals Overview of Popular Techniques of Raman Spectroscopy and Their Potential in the Study of Plant Tissues

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1537
Author(s):  
Aneta Saletnik ◽  
Bogdan Saletnik ◽  
Czesław Puchalski
Keyword(s):  
Raman Spectroscopy ◽  
Cell Walls ◽  
Structural Changes ◽  
Spatial Information ◽  
Technological Development ◽  
Analytical Techniques ◽  
High Sensitivity ◽  
Plant Tissues ◽  
Wide Range ◽  
Identification Technique

Raman spectroscopy is one of the main analytical techniques used in optical metrology. It is a vibration, marker-free technique that provides insight into the structure and composition of tissues and cells at the molecular level. Raman spectroscopy is an outstanding material identification technique. It provides spatial information of vibrations from complex biological samples which renders it a very accurate tool for the analysis of highly complex plant tissues. Raman spectra can be used as a fingerprint tool for a very wide range of compounds. Raman spectroscopy enables all the polymers that build the cell walls of plants to be tracked simultaneously; it facilitates the analysis of both the molecular composition and the molecular structure of cell walls. Due to its high sensitivity to even minute structural changes, this method is used for comparative tests. The introduction of new and improved Raman techniques by scientists as well as the constant technological development of the apparatus has resulted in an increased importance of Raman spectroscopy in the discovery and defining of tissues and the processes taking place in them.

Raman Spectroscopy for the Study of XVI-XVII Centuries Colonial Paintings

2014 ◽  
Vol 1618 ◽  
pp. 141-151 ◽  
Author(s):  
Ma. A. García-Bucio ◽  
E. Casanova-González ◽  
J. L. Ruvalcaba-Sil
Keyword(s):  
Raman Spectroscopy ◽  
San Francisco ◽  
Reference Materials ◽  
Analytical Techniques ◽  
Surface Enhanced Raman Spectroscopy ◽  
Raman Signal ◽  
Invasive Approach ◽  
Full Characterization ◽  
Surface Enhanced Raman ◽  
Historical Objects

ABSTRACTOutstanding information about the material composition and pictorial techniques of the New Spain Colonial painting can be obtained via a full characterization using a set of analytical techniques. Given the cultural importance of this painting, a non-invasive approach is preferred. Moreover, the preparation and use of reference materials using original recipes is necessary for a correct interpretation of the spectroscopic data from historical objects. Here, we present the results obtained via an in-situ Raman spectroscopic analysis of a set of pictorial reference materials, created according to XVI and XVII centuries’ recipes. Several difficulties were encountered, such as the low Raman detection signal, an intrinsic fluorescence of the material, and in some cases even laser-induced degradation. For this reason, the usual molecular Raman analysis was extended to Surface Enhanced Raman Spectroscopy (SERS), which enhances the Raman signal and quenches the fluorescence. It was then applied to the analysis of two wood paintings from the ex-convent San Francisco Tepeyanco, in Tlaxcala.

scholarly journals Edible Oils Differentiation Based on the Determination of Fatty Acids Profile and Raman Spectroscopy—A Case Study

2020 ◽  
Vol 10 (23) ◽  
pp. 8347
Author(s):  
Florina-Dorina Covaciu ◽  
Camelia Berghian-Grosan ◽  
Ioana Feher ◽  
Dana Alina Magdas
Keyword(s):  
Raman Spectroscopy ◽  
Sunflower Oil ◽  
Edible Oils ◽  
Analytical Techniques ◽  
Fatty Acid Analysis ◽  
Sea Buckthorn ◽  
Noninvasive Technique ◽  
Data Set ◽  
Linear Discriminant ◽  
Fatty Acids Profile

This study proposes a comparison between two analytical techniques for edible oil classification, namely gas-chromatography equipped with a flame ionization detector (GC-FID), which is an acknowledged technique for fatty acid analysis, and Raman spectroscopy, as a real time noninvasive technique. Due to the complexity of the investigated matrix, we used both methods in connection with chemometrics processing for a quick and valuable evaluation of oils. In addition to this, the possible adulteration of investigated oil varieties (sesame, hemp, walnut, linseed, sea buckthorn) with sunflower oil was also tested. In order to extract the meaningful information from the experimental data set, a supervised chemometric technique, namely linear discriminant analysis (LDA), was applied. Moreover, for possible adulteration detection, an artificial neural network (ANN) was also employed. Based on the results provided by ANN, it was possible to detect the mixture between sea buckthorn and sunflower oil.

scholarly journals Mobile Raman spectroscopy in astrobiology research

2014 ◽  
Vol 372 (2030) ◽  
pp. 20140202 ◽  
Author(s):  
Peter Vandenabeele ◽  
Jan Jehlička
Keyword(s):  
Raman Spectroscopy ◽  
Data Processing ◽  
Analytical Techniques ◽  
Research Areas ◽  
Different Types ◽  
Target Molecules ◽  
Processing Techniques ◽  
Spectroscopy Research ◽  
Selection Of

Raman spectroscopy has proved to be a very useful technique in astrobiology research. Especially, working with mobile instrumentation during fieldwork can provide useful experiences in this field. In this work, we provide an overview of some important aspects of this research and, apart from defining different types of mobile Raman spectrometers, we highlight different reasons for this research. These include gathering experience and testing of mobile instruments, the selection of target molecules and to develop optimal data processing techniques for the identification of the spectra. We also identify the analytical techniques that it would be most appropriate to combine with Raman spectroscopy to maximize the obtained information and the synergy that exists with Raman spectroscopy research in other research areas, such as archaeometry and forensics.

Simple Multivariate Approach for the Monitoring of Vinylation Reactions Using FT-Raman Spectroscopy

2002 ◽  
Vol 56 (10) ◽  
pp. 1314-1319 ◽  
Author(s):  
Didier A. A. Hutsebaut ◽  
Carl Vercaemst ◽  
Chris Hugelier ◽  
Francis Verpoort
Keyword(s):  
Raman Spectroscopy ◽  
Multivariate Calibration ◽  
Structural Information ◽  
Analytical Techniques ◽  
Production Costs ◽  
Calibration Model ◽  
Multivariate Approach ◽  
Ft Raman Spectroscopy ◽  
Sample Position ◽  
Leave One Out

Catalysts are major partners in industrial reactions. They arrange a higher selectivity, higher specificity, and lower production costs. The development of catalysts is therefore of major importance but the characterization is often time consuming since several analytical techniques are needed to obtain an insight into the process. This paper describes a simple multivariate approach for the acquisition of kinetic data resulting in a decrease of noise in the calibration using FT-NIR Raman spectroscopy. The latter has great potential to replace the classical analytical techniques since they may offer the catalyst-developing scientist a large variety of kinetic and structural information in a simple way. This paper reports on the application of multivariate calibration to extracting kinetic information out of the Raman spectra. Based on an experimental design, a calibration model has been calculated for the monitoring of a vinylation reaction. Due to appropriate data preprocessing, changes in sample position, variations in temperature, and laser fluctuations were corrected. The calculated calibration model was validated using leave-one-out cross validation and resulted in an RMSECV value of 0.013838 M. Based on the calibration model, the conversion for the vinylation was calculated and reported in this work.

scholarly journals Detection of Sub-Micro- and Nanoplastic Particles on Gold Nanoparticle-Based Substrates through Surface-Enhanced Raman Scattering (SERS) Spectroscopy

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1149
Author(s):  
Jessica Caldwell ◽  
Patricia Taladriz-Blanco ◽  
Barbara Rothen-Rutishauser ◽  
Alke Petri-Fink
Keyword(s):  
Raman Spectroscopy ◽  
Raman Scattering ◽  
Analytical Techniques ◽  
Surface Enhanced Raman Scattering ◽  
Raman Scattering Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Poly Ethylene ◽  
Average Size

Small plastic particles such as micro- (<5 mm), sub-micro- (1 µm–100 nm) and nanoplastics (<100 nm) are known to be ubiquitous within our surrounding environment. However, to date relatively few methods exist for the reliable detection of nanoplastic particles in relevant sample matrices such as foods or environmental samples. This lack of relevant data is likely a result of key limitations (e.g., resolution and/or scattering efficiency) for common analytical techniques such as Fourier transform infrared or Raman spectroscopy. This study aims to address this knowledge gap in the field through the creation of surface-enhanced Raman scattering spectroscopy substrates utilizing spherical gold nanoparticles with 14 nm and 46 nm diameters to improve the scattering signal obtained during Raman spectroscopy measurements. The substrates are then used to analyze polystyrene particles with sizes of 161 nm or 33 nm and poly(ethylene terephthalate) particles with an average size of 62 nm. Through this technique, plastic particles could be detected at concentrations as low as 10 µg/mL, and analytical enhancement factors of up to 446 were achieved.

scholarly journals Simple and efficient method for detection of traces of rare earth elements in minerals by raman spectroscopy instrumentation

2011 ◽  
Vol 30 (2) ◽  
pp. 241 ◽  
Author(s):  
Petre Makreski ◽  
Gligor Jovanovski* ◽  
Tomče Runčevski ◽  
Radojko Jaćimović
Keyword(s):  
Raman Spectroscopy ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Spectroscopic Method ◽  
Analytical Techniques ◽  
Abundance Distribution ◽  
Raman Spectroscopic ◽  
Spectroscopy Instrumentation ◽  
Modern Analytical ◽  
Ft Raman

As an effort to increase the knowledge about the abundance, distribution and geochemical behaviorof the rare earth elements (REEs), a simple and effective Raman spectroscopic method for detection of REEsin minerals is proposed. The proposed method based on Raman spectroscopy provides a lower detectionlimit for REEs compared to the modern analytical techniques. It could be practiced even in laboratoriesequipped only with FT-Raman instrumentation. This simple, inexpensive, rapid and straightforward Ramanmethod for REEs detection in minerals is a convenient experiment for undergraduate and postgraduatelaboratory courses.

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