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Publikováno v:
Applied spectroscopy. 57(5)
Raman spectroscopy is often considered a nondestructive analytical technique; however, this is not always the case. The 300-mW 785-nm near-infrared (NIR) laser source used with many commercially available instruments has sufficient power to burn samp
Publikováno v:
Applied spectroscopy. 74(2)
Glass is a unique material that is often encountered in chemical and biological studies as a convenient sample holder (vial or microscope slide in particular). If the sample is probed with light in fluorescence and Raman spectroscopic experiments, th
Publikováno v:
Applied spectroscopy. 71(11)
A high-throughput Raman chemical imaging method was developed for direct inspection of benzoyl peroxide (BPO) mixed in wheat flour. A 5 W, 785 nm line laser (240 mm long and 1 mm wide) was used as a Raman excitation source in a push-broom Raman imagi
Autor:
Anup Sharma, Aschalew Kassu, J. Boateng, Carlton Farley, Nayana Bose, Armitra Jackson-Davis, Paul Ruffin
Publikováno v:
Applied spectroscopy. 71(6)
A short distance standoff Raman technique is demonstrated for detecting economically motivated adulteration (EMA) in extra virgin olive oil (EVOO). Using a portable Raman spectrometer operating with a 785 nm laser and a 2-in. refracting telescope, ad
Autor:
Wieland Hill, Verena Maria Dr Petrou
Publikováno v:
Applied Spectroscopy. 54:795-799
Carious lesions can be distinguished from sound hard tooth tissues because their near-infrared Raman spectra exhibit an increased luminescence. A comparison of the ratio between luminescence and Raman band intensities for diseased and healthy areas o
Publikováno v:
Applied spectroscopy. 61(11)
Quantitative analysis of pharmaceutical formulations using the new approach of transmission Raman spectroscopy has been investigated. For comparison, measurements were also made in conventional backscatter mode. The experimental setup consisted of a