| Abstract: | Preliminary results reported in this paper relate to the capture, retention and subsequent analysis of cationic N‐nitrosamines, from aqueous solutions, at calix[4]resorcinarenetetrathiol modified gold electrodes. Adsorptive stripping voltammetric regimes at electrodes of this type have allowed quantifications of N‐nitroso‐N‐butyl‐N‐propylamine down to concentrations of 10?10 M. Calix coatings have been shown, in certain cases, to allow an enhancement in the adsorptive uptake and subsequent analysis of N‐nitrosamines in solution in comparison to signals obtained at bare gold electrodes, although the coatings may become saturated when higher concentrations or when longer preaccumulative deposition times are employed. |
