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Fig. 2. (Color online) Absorption spectrum of indigo carmine solution in the wavelength range of 250 nm – 800 nm (UV-vis spectrophotometer was used). Indigo carmine solutions of 0.8 mM, 1.6 mM, and 2.0 mM concentrations were measured, respectively.
New Phys.: Sae Mulli 2023;73:165~172 https://doi.org/10.3938/NPSM.73.165
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