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Abstract
With a Ni/C modified electrode as working electrode, in 0.1 mol/L NaOH solution, a sensitive reductive wave of chloramphenicol was obtained by linear sweep voltarmnetry. The peak potential was −0.80V (SCE). The peak height was proportional to the concentration of chloramphenicol over the range of 1.0 × 10−5–1.0 × 10−3 mol/L and the detection limit was of 5.0 × 10−6 mol/L. The behavior of the reduction wave was studied and applied to the determination of chloramphenicol in eye drops. The reduction process was quasi-reversible. The experiments of AES and XPS showed that Ni was surely implanted into the surface of the GCE and the implanted Ni improved the electrochemical activity of the GCE.
