overlap indicator
1.Because of the overlap between the fluorescent emissionspectrum of 5,10,15,20-tetraphenylporphine (TPP) and the absorption spectrum ofETH5294 , in this paper , a kind of optical chemical sensors of fluorescenceenhancement for lithium ions were developed on the basis of ion-exchange sensingscheme . The fluorescent agent TPP was incorporated in the plasticized PVCmembrane containing the lipophilic pH-indicator ETH5294 and lithium selectiveneutral ionophore ETH 1810 .. .
