raman identification Articles
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New Membranes for Environmental, Pharma and Wider Applications
Summary: A new membrane that’s better for your application Choose Gold-coated polyester membranes for: Detecting and characterizing micro-plastics in environmental water samples. Particle analysis by SEM/EDX, FTIR microscopy and Raman spectroscopy. Identification and characterization of micro- and nanoparticles in pharmaceutical fluids and chemical auxiliary agents. Testing for ...
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Sampling guidelines for handheld Raman measurements; what you need to know
In recent years. Raman spectroscopy has seen increased adoption as the technique of choice for the rapid identification of materials; especially for raw material identification in the pharmaceutical industry, identification of controlled substances and explosives for security applications, polymer material identification for packaging and plastics recycling, and mineral and gemstone ...
By B&W Tek
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Stand-off Raman Spectrometer for Identification of Liquids in Pressurised Gas Pipelines - Case Study
A stand-off Raman spectrometer has been developed to make observations of liquid samples within a gas pipeline. The instrument is based o a static Fourier Transform spectrometer. The high etendue offered by the instrument enabled four liquid samples to be measured from a distance of 2.4m within a gas pipeline. Liquids were identified with depths of less than 5 mm demonstrating the concept is ...
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Handheld 785 nm Raman applications: Cutting edge material ID capabilities in your pocket
Handheld 785 nm Raman is a well-established material identification technique, most notably in the pharmaceutical and defense and security markets. Now, new capabilities developed by Metrohm Raman are expected to increase the capabilities of handheld Raman in diverse industries. This article will first cover the instrumentation and then conclude with several new applications for 785 nm Raman ...
By Metrohm AG
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The evolution of handheld 785 nm Raman spectroscopy: Raman extraction from fluorescence interference
MIRA DS (Metrohm Instant Raman Analyzer) is a handheld Raman system that identifies materials using 785 nm laser excitation. The advantages of using 785 nm Raman are well understood. Excitation with shorter wavelengths produces strong Raman scattering with short acquisition times. This results in a high signal-to-noise ratio and provides excellent spectral resolution with lower power draw. ...
By Metrohm AG
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Frequently Asked Questions (FAQ) about Raman spectroscopy: Theory and usage
Raman spectroscopy is a non-destructive analytical technique based on the inelastic scattering of photons related to the different vibrational modes of molecules. This discovery by C. V. Raman in 1928 resulted in a simple yet effective method to determine the structure of simple molecules that continues to grow in popularity among the scientific community. As the spectrometer’s laser ...
By Metrohm AG
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Mixture analysis using reverse searching and non-negative least squares
The portable even handheld Raman spectrometer can provide adequate spectral resolution for material identification in situ. Raman spectra are information rich but not easy to interpret, especially for the spectra of mixtures. The ability to identify components in the mixture is, therefore, of considerable interest and challenge. In this study, a promising solution for rapid mixture identification ...
By B&W Tek
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The use of portable and handheld Raman spectroscopy for forensic investigations
The Raman technique is gaining widespread acceptance as an investigative tool for forensic applications. This article focuses on the use of portable and handheld Raman spectroscopy in the field of forensic science and illustrates it with real-world examples. The benefits of Raman spectroscopy are well recognized for the molecular identification of unknown molecular compounds and as a result the ...
By B&W Tek
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Using Raman Spectroscopy for Microplastic Analysis
Microplastic analysis of materials found in our environment has become a priority to understand their potential impacts on human health. Most characterisation techniques face many challenges due to the nature of the microplastic samples. This article outlines the need for more research into microplastics and how Raman microscopy offers unique advantages for microplastic analysis and identifying ...
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