The detection of micro pollutants by new innovative systems is one of the important issues of our society. This study is dedicated to innovative pollutant sensors exploiting the interaction properties between light and original nanostructured materials, in order to create a real jump in performance in terms of detection limit, quantification and sensitivity. The detection of our pesticide is based on the variation of the optical properties of the materials used in the presence of the molecule to be detected. We propose two ways of investigation that are (i) the Surface Plasmon Resonance detection (SPR) in Kretschmann configuration and (2) the use of an original functionalized nano structured organization based on the use of functionalized gold nanoparticles.