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Industry Application Notes

Fluorescence Spectroscopy of Tryptophan in Turkey and Milk

Posted on: November 21st, 2022

Background/Applications: Fluorescence spectroscopy can be used in a wide range of applications from medical, to fraud detection, and food safety. For example, in medical applications, fluorescence is being used to distinguish between healthy and cancerous tissues. In the realm of fraud and counterfeit detection, fluorescent markers are being implanted in products ranging from fuel to…

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Absorbance Testing on Weed Killer Using Spectroscopy Instruments

Posted on: November 3rd, 2022

Roundup Experiment In this experiment, we tested low concentrations of glyphosate with a special variable path length dip probe with a narrow tip to measure the chemical’s absorbance. We tested the dip probe with a path length of 10mm and 5mm to also measure the limit of detection for the lower concentrations. As path length…

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Spectroscopy Experiment: Dry Ice Effect on Color Absorbance of pH Indicators

Posted on: October 27th, 2022

In this experiment, we tested the color change of three pH indications from a basic initial state to an acidic final state. The three indicators used were universal indicators, bromocresol green, and phenol red. Dry ice was used to increase the acidity of these solutions. Dry ice is the solid form of carbon dioxide, and…

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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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