It is well known that the use of
micellar microheteregeneous systems in fluorescence spectrometry
presents several advantages over conventional homogenous
solutions including increased sensitivity, reduced interference
and enhanced experimental convenience [29]. Several reports
on the application of micelles to improve the performance of
spectrofluorimetric methods have been appeared in literature
[30–32]. However, precipitates may occur especially at room
temperature. To overcome this drawback the use of mixed surfactants
has been proposed.
In the present work a simple, sensitive and non-extractive
spectrofluorimetric method for the determination of tin(II) is
described. It is based on the formation of a fluorescent complex
with 1-(2-pyridylazo)-2-naphtol (PAN) in a micellar medium.
The mixture of Triton X-100 and bis(2-ethylhexyl) sulfosucci