A new highly selective optical sensor was prepared by
de-esterification of triacetyl cellulose
transparent film and chemical immobilization of 1-acenaphthoquinone
1-thiosemicarbazone (L) on it.
The absorbance variation of immobilized 1-acenaphthoquinone
1-thiosemicarbazone on hydrolyzed cellulose acetate film of upon addition of
1.5 × 10-5 mol L-1 aqueous solutions of Zn2+, Pb2+, K+, Cu2+, Ag+, Ni2 , Cd2+,
Ca2+, CrO4 2-, Hg2+, Co2+, Mn2+, Cr3+, S2 O3 2-, Mg2+, Na+, Al3+, Tl+ and Fe3+
indicated a substantiality much larger variation for the Nickel ion in compare
to other studied ions.
Consequently, the new hydrazone derivative L possesses a high
selectivity towards this metal ion. Influences of various experimental
parameters on Ni2+ sensing, including the reaction time, the solution pH and
the concentration of reagents were studied.
No comments:
Post a Comment