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Laser-Induced Breakdown Spectroscopy of High-Pressure Bulk Aqueous Solutions

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Abstract:

Laser-induced breakdown spectroscopy (LIBS) is presented for detection of several Group I and II elements (e.g., Na, Ca, Li, and K), as well as Mn and CaOH, in bulk aqueous solution at pressures exceeding 2.76 × 107 Pa (276 bar). Preliminary investigations reveal only minor pressure effects on the emission intensity and line width for all elements examined. These effects are found to depend on detector timing and laser pulse energy. The results of these investigations have implications for potential applications of LIBS for in situ multi-elemental detection in deep-ocean environments.

Keywords: BULK SOLUTION; HIGH PRESSURE; HYDROTHERMAL VENT; LASER-INDUCED BREAKDOWN SPECTROSCOPY; LIBS; PLASMA

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370206777887161

Affiliations: 1: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208 2: Massachusetts Institute of Technology/Woods Hole Oceanographic Institution Joint Program Department of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, MS#7, Woods Hole, Massachusetts 02543 3: Department of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, MS#7, Woods Hole, Massachusetts 02543

Publication date: July 1, 2006

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