3 03 21 RawSienna EDS Spectrum.jpg

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EDS Spectrum showing elemental peak height as a function of X-ray counts collected (LC)

Elements Identified Major (> 10%): carbon, oxygen. Minor (1-10%): iron, aluminum. Trace (< 1%): barium, potassium, calcium, sulfur, manganese.

Area X-ray counts collected: 3,103,728. Live Time: 53.4 seconds. Magnification: 186x. Analyzed using Oxford X-Max80 energy-dispersive X-Ray spectroscopy (EDS) and Oxford AZtec platform software. Pigment sample was applied to carbon tape and mounted onto aluminum examination stub. X-rays from sample were excited by a 20 kV SEM electron beam in a low vacuum chamber (10 Pascals). The resolution of the X-Max80 silicon drift detector is 123 eV at MnKα wavelength.

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