DETECTION OF LEAD AND COPPER WITH NITROGEN DOPED DIAMOND-LIKE CARBON THIN FILMS

Nitrogen doped diamond-like carbon (N-DLC) thin films were prepared on n-Si substrates using a filtered cathodic vacuum arc deposition method. Square wave anodic stripping voltammetry (SWASV) was used to trace Pb and Cu in a neutral KCl solution with pH 7. Stripping voltammograms of Pb and Cu were analyzed in terms of metal concentration, deposition time and deposition potential. The SWASV results showed that the N-DLC film electrodes were promising electrodes to detect Pb and Cu