Patent ID: 7982872

Claim:
A system for determining the presence and concentration of a target substance within a liquid material in a pipeline or vessel, said device comprising: a chamber connected in fluid communication to the pipeline or vessel and arranged to receive and accumulate samples of a liquid material directly from the pipeline or vessel through an inlet and return samples back to the pipeline or vessel; a coupon within the chamber having an electrically conductive surface; an electrical charging system for providing an electric charge on the coupon; a counter electrode within the vessel and spaced from the coupon for sensing an electric charge on the coupon and through a sample liquid material within the vessel; a reference electrode within the chamber and spaced from each of the coupon and the counter electrode and arranged for sensing an electric charge on the electrode and through a sample liquid material within the chamber and also through a reference fluid that is physically isolated from any sample liquid material in the vessel but in electrochemical communication with any sample liquid within the vessel; an electrical charging system arranged to provide the electric charge on the coupon and adjusting the precise electrical charge based on input from the counter electrode and reference electrode so as to provide a precise electric charge that draws molecules of the target substance to the surface of the coupon; an optical component with a light source for directing light to the electrically conductive surface of the coupon to induce vibrational responses of and within the molecules of the liquid material and a sensor for collecting and measuring light scattered by the vibrating molecules on the surface of the coupon; a spectrometer for interpreting the scattered light to provide information regarding the presence and quantificational information of the target substance within the liquid material in the pipeline or vessel.