Fluoro-sensing applied to detection and identification of hydrocarbons in inland waters

Abstract

This paper presents the detection and identification of hydrocarbons through flu oro-sensing by developing a simple and inexpensive detector for inland water, in contrast to current systems, designed to be used for marine waters at large distances and being extremely costly. To validate the proposed system, three test-benches have been mounted, with various UV-Iight sources. Main application of this system would be detect hydrocarbons pollution in rivers, lakes or dams, which in fact, is of growing interest by administrations.Another fact that damages the quality of the rivers is referred to the presence of pollutants, which due to its hazard, should never be present, such as hydrocarbons (Figure 1. ). Therefore detection and control becomes is a basic need.

Functional Analysis in Long-Term Operation of High Power UV-LEDs in Continuous Fluoro-Sensing Systems for Hydrocarbon Pollution

“…The 1 mm thickness election has been used in a previous work [ 20 ] and selected as low limit of identification. Larger thicknesses of hydrocarbon imply higher absolute fluorescence signature values.…”

“…, small size, less cost, quick output optical power stabilization and long life. The UV-LEDs emits in a narrow band of wavelength [ 18 , 19 , 20 ]. To obtain the fluorescence signature at different wavelengths sources the use of several LEDs are needed [ 2 , 3 , 4 ], or the combination with other light sources [ 21 ].…”

“…The future short-term objectives are recognition of the signature pattern and integration of the whole experimental system in automatic water quality station of the Jarama-Tagus Rivers (Spain) [ 22 , 23 ], working 24/7 ( Figure 1 ). In these automatic stations, the authors test different disciplines related to the development of new capabilities, such as the present work, which analyzes the HP UV-LED in the long-term, non-contact, continuous, real-time fluoro-sensing identification of the pollutants [ 20 , 24 , 25 ], as well as others, like the development of compact, low-power consumption high security warning communications systems with redundant dual-band based mobile phone systems (380 MHz and 960 MHz) [ 26 , 27 ].…”

“…Furthermore, the spectroscopy workbench instrumentation developed for this HP UV-LED work analysis is in accordance with the new generation of compact, real-time, low cost [ 7 , 8 ], low and easy power, fixed [ 9 ] or portable [ 2 , 3 , 12 ], autonomous systems [ 4 ], that connect to a PC or single-board computer. The experiments over the last few years dealt with the detection of substances such as chlorophyll and phytoplankton [ 2 , 3 , 4 , 7 , 8 , 9 ], besides pollutant detection [ 6 , 20 ].…”

Validación de HP UV-LED para la detección en continuo de contaminantes en aguas continentales mediante fluorescencia

“…Se identificaron las ventajas y limitaciones del LED respecto a sus "competidores" así como se desarrollaron medidas en todos los hidrocarburos típicos de consumo con estas fuentes de luz. Los resultados se publicaron en una conferencia [AGMGE13].…”