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

fYear

2012

fDate

14-19 Oct. 2012

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Oceans, 2012

Conference_Location

Hampton Roads, VA

Print_ISBN

978-1-4673-0829-8

Type

conf

DOI

10.1109/OCEANS.2012.6404808

Filename

6404808