M. Macit et al., Synthesis of 4-benzyl-1-piperazineglyoxime and its use in the spectrophotometric determination of nickel, TURK J CHEM, 24(1), 2000, pp. 81-88
A new reagent, 4-benzyl-1-piperazineglyoxime(BPGH(2)), was synthesized and
used for developing a simple and rapid extractive method for the spectropho
tometric determination of nickel. This method is based on the selective ext
raction of nickel complex from aqueous solution into carbontetrachloride an
d the measurement of the absorption at 267 nm. The method was applied to th
e determination of nickel ion in some standard and practical samples.