A new method for measuring contaminants solved in seawater by measurement of fluorescence lifetime

Nowadays, many systems to obtain the value of concentration of contaminants dissolved in water have been developed. These systems use to take a sample from the water (sea, rivers or lakes), make a preparation and, finally, analyse the prepared sample. This process spent a lot of time and needs very specialized personnel for doing it. In this paper, an on-line system to obtain the value of concentration of several contaminants is presented. It allows us to have a permanent control of concentration values. The measurement process uses the fluorescence characteristics of these contaminant substances and it can be used for many petroleum-derived substances.