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Industry Application Notes

Fluorescence of Anthocyanins in Blueberries

Posted on: September 13th, 2022

Background/Applications: Anthocyanins are water-soluble pigments that are responsible for the red, purple, and blue coloring in fruits and vegetables. The colored anthocyanins are used as natural food colorants, and as potential pharmaceutical ingredients that give various health benefits. Anthocyanins possess antibacterial and antioxidative qualities that have the ability to improve visual and neurological health and…

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Measuring Melanin and Hemoglobin levels of Skin Samples

Posted on: August 25th, 2022

Background/Applications: Human skin measurements apply to many industries and field studies with differing analyses in absorbance, transmission, and or reflectance. In this experiment, we tested the absorbance and reflectance of skin samples to analyze skin pigmentation and protein structures. The skin pigmentation studied in this experiment was melanin. Melanin is mainly located in the epidermis…

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Spectral Irradiance Using Avantes Solar Simulator

Posted on: July 28th, 2022

Conducted by: David Ademe, Avantes Inc. Theme: Solar Simulator/Irradiance Background/Applications: Spectral irradiance is the irradiance of a surface per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength. The two forms have different dimensions: spectral irradiance of a frequency spectrum is measured in watts per…

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Raman and LIBS Analysis of Garnet Species

Posted on: July 28th, 2022

Earlier this year, we had the opportunity to analyze an extensive sampling of garnets from around the world, courtesy of collections from Dan Zellner of DanZ Rockshop and Nathan Robey, Sales Application Engineer at Avantes. In our first application note titled, “Characterization and Identification of Garnet Using Spectroscopy Techniques,” we focused on a specific garnet…

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Indocyanine Green Fluorescence Using Raman Laser Spectroscopy

Posted on: June 28th, 2022

Conducted by: David Ademe (Applications Engineer), and Sara Beard (Chemistry Intern), Avantes Inc. Background/Applications: Indocyanine Green (ICG) is a powdered dye that is used for fluorescence imaging in a variety of medical applications. Indocyanine green emits fluorescence between 750 nm and 950 nm with maximum values of approximately 810 nm when dissolved in water. Compared…

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Improving the Future of Smart Agriculture with Spectroscopy

Posted on: June 24th, 2022

Climate change and population expansion have a direct impact on agriculture. An increasing number of people need to be fed but changing weather patterns can cause complete crops to fail. Inevitably, farms must produce more with less, and frequently under increasingly difficult conditions. Growing seasons are shorter, there are fewer resources such as clean water,…

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Laser induced breakdown spectroscopy for soil analysis

Posted on: May 30th, 2022

For over 120 years, agriculturalists have been aware of the importance of soil testing, particularly elemental analysis, to ensure the health and productivity of crops. Historically this has been accomplished by randomly sampling soil across a representative region of the field and sending them off to a laboratory to be analyzed using chromatography, mass spectrometry,…

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Comparing Soil Samples with NIR Spectroscopy

Posted on: May 30th, 2022

Conducted by: David Ademe (Applications Engineer), Avantes Inc. Theme: NIR Reflection Spectroscopy Background/Applications: Near-infrared (NIR) spectroscopy is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum (from 780 nm to 2500 nm). Typical applications of NIR spectroscopy include the analysis of pharmaceuticals, materials, pulse oximetry, and food products. Along with food products,…

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Application Note: Characterization and Identification of Garnet

Posted on: April 28th, 2022

Spectroscopy Methods for the Gemology Industry Spectroscopy has been long used in the gemology industry for characterization and identification, with nearly every known spectroscopic method playing a critical role. Transmission provides insight into gemstone clarity, reflectance provides colorimetric data, fluorescence & absorption are excellent at detecting bulk defects, and Raman & laser-induced breakdown spectroscopy (LIBS)…

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