Development and field testing of laser-induced breakdown spectroscopy for in situ multi-element analysis during underwater surveys

Thornton, Blair, Masamura, Tatsuya, Takahashi, Tomoko and Ura, Tamaki (2012) Development and field testing of laser-induced breakdown spectroscopy for in situ multi-element analysis during underwater surveys. In Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012. The Printing House for Chemical and Biological Microsystems Society. 1 pp .

Abstract

The application of laser-induced plasmas has been investigated as a method to perform in situ, multi-element chemical analysis of liquids and immersed solids at sea during marine surveys. Analytically useful spectra have been observed from plasmas generated by irradiation of a high power pulsed laser in both bulk liquids and immersed solids using a single pulse at hydrostatic pressures of up to 300atm. Experiments were performed at sea using the in situ laser-induced breakdown spectroscopy (LIBS) device I-SEA (In situ Seafloor Element Analyser) mounted on-board the remotely operated vehicle (ROV) Hyper-Dolphin of the Japan Agency for Marine Science and Technology (JAMSTEC). During the trials real-time, multi-element analysis was successfully achieved for the first time at sea using LIBS for both liquids and immersed solids at a depth of 200m.

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