Fluorescent aluminium indicators derived from substituted coumarins.
Metalfluorechromic indicators, containing the o,o'-di-hydroxyazo group, have been prepared from a number of coumarin derivatives. The dye obtained from 4-methylumbelliferone reacts with 0.2-10 ppm of aluminium at pH 4-5 to give a pink fluorescence with an excitation peak at 540 mmu and an emission peak at 590 mmu.
Aguilà
J F
JF
Instituto de Biología Aplicada C.S.I.C. Sección de Fisiología Vegetal Universidad de Barcelona, Spain.