Title :
Development and field testing of laser-induced breakdown spectroscopy for in situ multi-element analysis at sea
Author :
Thornton, B. ; Masamura, T. ; Takahashi, T. ; Ura, T. ; Ohki, K. ; Sakka, T.
Author_Institution :
Univ. of Tokyo, Tokyo, Japan
Abstract :
The application of laser-induced plasmas has been investigated as a mechanism 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 30MPa. 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 sea trials real-time, multielement analysis was successfully achieved for the first time for both liquids and immersed solids at a depth of 200 m.
Keywords :
marine control; ocean chemistry; oceanographic equipment; oceanographic techniques; plasma production by laser; remotely operated vehicles; telerobotics; Hyper-Dolphin; I-SEA device; JAMSTEC; hydrostatic pressures; immersed solids; laser-induced breakdown spectroscopy; laser-induced plasmas; marine surveys; multielement chemical analysis; real-time sea trials; remotely operated vehicle; seafloor element analyser; Lasers; Liquids; Optical pulses; Pollution measurement; Solids; Spectroscopy; Stimulated emission;
Conference_Titel :
Oceans, 2012
Conference_Location :
Hampton Roads, VA
Print_ISBN :
978-1-4673-0829-8
DOI :
10.1109/OCEANS.2012.6404808
