The effects of micelles of cetyltrimethylammonium bromide (CTAB) and cetylp
yridinium bromide (CPB) on the observed pseudo-first-order rate constants f
or the interaction of ninhydrin with tryptophan were studied. The influence
of different parameters was considered, i.e., reactant concentration, surf
actant concentration, temperature, and effect of added salts. The data are
explained in terms of the pseudo-phase model of the micelles. (C) 1999 Acad
emic Press.