Extraction and photometric determination of microamounts of Zn2+, Cd2+ and Hg2+ with 1-(2-quinolylazo)-2-acenaphthylenol.
1-(2-Quinolylazo)-2-acenaphthylenol (QAAc) combines with Zn(II), Cd(II) and Hg(II), giving deep red 1:2 complexes which are extractable in CCl(4)and other organic solvents. Spectrophotometric methods based on the reactions are sensitive and fairly selective, the Sandell's sensitivities being 8.8 x 10(-4), 2.4 x 10(-3) and 3.3 x 10(-3) microg/cm(2) for Zn(II), Cd(II) and Hg(II) respectively.
Singh
I
I
Department of Chemistry, University of Delhi, Delhi 110007, India.
Mehta
Y L
YL
Garg
B S
BS
Singh
R P
RP