80 beta-carotene 60 1 60 lutein chlorephyll a 40 40 orophyll b 20 20 400 500 600 700 400 500 Wavelength(nanometers) Wavelength (nanometers)
©W.P.Armstrong2001 CW.P.Armstrong 2001 Chromatography paper Reaction chamber Spot of pigment Pencil line Solvent