Copper film electrode for sensitive detection of nitrophenols

In this study, we present a copper film electrode (CuFE) for sensitive voltammetric detection of nitrophenols. The detection scheme comprised an electrochemical oxidative activation of a glassy carbon supporting electrode, an in situ formation of CuFE, and a measurement step. All three steps were performed simultaneously in a single cathodic voltammetric scan. Several critical parameters influencing the operation of CuFE were examined and optimized, such as the concentration of copper ions, pH, potential scan, activation time, etc. The CuFE showed excellent electroanalytical performance for the detection of selected mono-, di-, and trinitrophenols with good sensitivity in the low mu g L-1 concentration range and favorable repeatability. The practical applicability of this sensor was successfully demonstrated by measuring 2,4-dinitrophenol, as a test analyte, in a real seawater sample.

Automated summary

In this study, a copper film electrode (CuFE) was developed for sensitive voltammetric detection of nitrophenols. The CuFE demonstrated excellent electroanalytical performance in detecting selected nitrophenols with good sensitivity and repeatability. The practical applicability of this sensor was successfully demonstrated by measuring 2,4-dinitrophenol in a real seawater sample.