Diseño e implementación de un sistema óptico para detección de contaminación petrolera en el suelo

Abstract

This research presents a portable prototype that allows detecting the presence of oil contamination in the soil immediately, through the use of fluorescence spectroscopy, this technique consists of bombarding a sample of soil with ultraviolet light where the presence of polycyclic aromatic hydrides the energy is absorbed and then released in the form of heat and visible radiation or fluorescence, in this way the soil samples containing hydrocarbons will present spectral responses. The prototype consists of several systems that fulfill a specific function, which are: Optical system, consisting of a led diode of ultraviolet light with a wavelength of 390 nanometers and an optical focusing system that allows to control the number of beams light directed to the emitter terminal of the probe, to later conduct the light towards the soil sample. Sampling system consists of an ergonomically designed test tip to analyze the soil immediately allowing easy adjustment of the distance between the probe terminal and the sample. Data processing system consisting of a graphical interface where the spectral responses are analyzed and visualized, thus allowing the results to be interpreted quickly and easily. Electronic system that is composed of several electronic components necessary for the operation of each of the parts of the prototype as well as the distribution of energy to the different devices.