Extraction and spectrophotometric determination of nickel with 2-hydroxyacetophenone oxime and simultaneous determination of copper and nickel.
It is observed that 2-hydroxyacetophenone oxime can be used for the quantitative extraction of nickel in the pH range 6.6-7.8 into methyl isobutyl ketone. The organic layer shows maximum absorbance at 375 nm. Beer's law is obeyed over the range 1-6 ppm. The colour of the organic layer is stable for more than 48 hr. Interferences have been studied and methods are suggested for their elimination. Copper and nickel are both quantitatively extracted at pH 7 and can be determined simultaneously and accurately in the range 1-6 microg/ml for copper and 1-4 microg/ml for nickel.
Reddy
T S
TS
Department of Chemistry, Autonomous Post-Graduate Centre, Anantapur, 515 003, India.
Rao
S B
SB