Masschelein-Kleiner, L. 1967 Microanalysis of hydroxyquinones in red lakes.. Microchimica Acta 6: 1080-1085.

Notes: Old and modern lakes made with hydroxyquinones can generally be characterized by the nature of their quinones. A rapid and sensitive method, based on thin-layer chromatography, is proposed. The technique may be applied on microscale. Examples are reported and applications to the analysis of red lakes and dyed textiles are described. Coloring matters examined include Coccus cacti, C. laccae and Kermococcus ilicis.