Oil-spill detection sensor using ultraviolet-induced fluorescence for routine surveillance in coastal environments

A compact coastal-mounted sensor for detection of ultraviolet-induced fluorescence from oil slicks in coastal aquatic environments was constructed. By combining filters and a lens, the designed optical structures ensure that the sensor can effectively emit an ultraviolet laser by a xenon flash lamp and accurately capture and measure fluorescence emitted by oil slicks. Laboratory measurements of six oil samples were performed, and field recordings of natural seawater and oil slicks fluorescence were conducted. The data change rate recorded by the sensor can be used as a warning indicator for oil spills. Long-term measurement results obtained by deploying the proposed sensor in PetroChina-owned ports in Dalian, China indicate that the proposed sensor and detection method can be employed as a rapid detection system for oil spills on seawater surfaces.