“…Although the L Q s obtained at the m‐AgSAE for 4‐NI were slightly higher than in a previous voltammetric study on a hanging mercury drop minielectrode ( L Q s of 0.15 μmol L −1 and 0.27 μmol L −1 for authentic samples of drinking and river water, respectively) [50], the m‐AgSAE appears to be a more stable and robust electrode, particularly suitable for measurements in flow‐through systems. This potential application is related to the fact that most nitrated aromatic hydrocarbons (both monocyclic and polycyclic) cannot be determined in a mixture with the use of voltammetric techniques alone [56]. For the successful determination of nitrated aromatic hydrocarbons in a mixture, a pre‐separation step must be used, as shown, for example, in the HPLC study [15], where the m‐AgSAE was also used as a working electrode in the presented electrochemical detector.…”