SEMIQUANTITATIVE TIME-RESOLVED LIBS MEASUREMENTS

Detection of heavy metals has been performed in different standard soi l samples by using a mobile lidar fluorosensor apparatus. Applying the laser-induced breakdown spectroscopy (LIES) technique to a remote sen sing apparatus can result in a very fast tool for pollution analysis o ver large areas contaminated by heavy metals. The hardware and softwar e we developed has shown that significant semiquantitative remote anal ysis can be performed, even without the high spectral resolution opera tion characteristic of laboratory devices. The aim of this paper is to contribute to the realization of a real-time single-shot mobile devic e equipped with the relevant data analysis software and able to provid e a realtime response about the presence of hazardous species in a var iety of contaminated environmental solid substrates (rocks, soil, sand s, ashes). Results obtained on standard samples are shown and discusse d together with the general applicability of the method to remote sens ing operation.