Fast and Selective Detection of Trigonelline, a Coffee Quality Marker, Using a Portable Raman Spectrometer

Quality control in the food industry is a key issue that requires rapid, efficient and selective methods that could discriminate the products, detect fraudulent or accidental adulterations, and identify the content of some biomarkers within a particular process of storage conditions. For this, Raman spectroscopy in conjunction with the optical properties of metallic nanostructures is a powerful technique that can be implemented in food analysis.

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Raman Spectroscopy as a Tool for Process Analytical Technology

Raman spectroscopy is a well-suited spectroscopic technique for process development and control within development laboratories in chemical, pharmaceutical and other industries. This article demonstrates the utility of portable Raman spectroscopy as a simple and versatile tool for process analytical technology (PAT) in regards to raw material identification, in-situ monitoring of reactions in developing active pharmaceutical ingredients (APIs), and for real-time process monitoring.

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Rapid Analysis of Textiles with Portable Near Infrared Spectroscopy

NIR spectroscopy is a green technology that is non-destructive, efficient, rapid and accurate, with no sample preparation needed. When applied to the rapid identification of textiles, it removes the need for strong chemical solvents to dissolve the samples, meaning that there is no destructive sampling, greater safety for the operators, and no hazardous materials output into the environment.

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Combined Electrochemical Raman Spectroscopy for Process Characterization

Raman spectroscopy has proven to be an effective technology to characterize conductive polymers in combination with conventional electrochemical experiments. Coupled with electrochemical techniques, it allows in-situ characterization of the molecular structure changes of polymers during the course of electrochemical reactions.

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Low Frequency Raman Spectroscopy

Raman Spectroscopy is an advantageous analytical tool that allows for the measurement of molecular structure and identifying chemical composition of materials based on the rotational and vibrational modes of a molecule. Access to lower frequency regions with Raman spectroscopy provides key information for applications in protein characterization, polymorph detection and identification, along with material phase and structure determination.

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Raman Spectroscopy in Archaeological Studies

Chemical identification is an important part of the study of archaeological artefacts and artworks. This information can be obtained through nondestructive Raman analysis directly within the environment in which the artefacts are discovered. This information is extremely helpful in forming the basis of identifying pigments, dyes and paints used; thus indicating when and how a piece was made, giving insight into the time period of creation, and suggesting the authenticity of the object.

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Portable Raman Instrumentation for SERS Applications

Surface enhanced Raman spectroscopy (SERS) has attracted significant attention in recent years due to rising interest in trace level detection in the field for applications such as environmental safety, food safety, and homeland security. The development of SERS technology is being driven by a need to overcome the technical barrier of the lower detection limit with Raman spectroscopy as well as the need for trace level detection of explosive compounds, chemical residuals, and biomedical diagnostics.

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Portable Raman Spectroscopy for the Study of Polymorphs and Monitoring Polymorphic Transitions

Raman spectroscopy is used for material characterization by analyzing molecular or crystal symmetrical vibrations and rotations that are excited by a laser, and exhibit vibrations specific to the molecular bonds and crystal arrangements in the molecules. Due to its excellent spectral specificity, Raman technology is a valuable tool in distinguishing different polymorphs, and can also be used in the study of solvate forms.

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Carbon Black At-line Characterization Using a Portable Raman Spectrometer

Carbon black is a form of amorphous carbon. It is mainly used as reinforcement filler in automobile tires and other rubber products, but is also used in pigments, paint, and carbon paper. Raman spectroscopy is a very effective analytical technology to characterize carbon materials. The fast characterization of carbon black material using Raman spectroscopy is discussed here to demonstrate that Raman technology is well suited for carbon black material characterization.

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Choosing the Most Suitable Laser Wavelength For Your Raman Application

Dispersive Raman spectroscopy has increasingly been implemented for material identification due to its portability and sampling flexibility. When choosing a Raman instrument, a primary concern is the wavelength of the laser that is integrated into the Raman spectrometer system. Though the Raman shift of any material is only related to the material’s specific chemical structure and is independent of the excitation wavelength, different wavelengths have their strengths and weaknesses.

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