Calcium carbonate: Ukiyo-e colorant
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Calcium carbonate 胡粉(gofun): Black is derived from
For more information see: Calcium carbonate
Examples of Calcium carbonate in Ukiyo-e Prints
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Analysis
Excitation Emission Matrix (EEM) spectroscopy can easily identify the organic reds: safflower, madder, and sappanwood. Madder fluoresces brightly under UVA radiation and produces a unique EEM pattern that helps differentiate it from safflower, which also fluoresces.
EEM plot for Madder 
3D EEM plots for Red references 
Overlay of EEM curves for Red references 
Overlay of FORS spectra for Red references
Other Images of Calcium carbonate
Weathered oyster shells, by Musashino Art University
Add image of gofun
Pages in category "Calcium carbonate: Ukiyo-e colorant"
The following 3 pages are in this category, out of 3 total.