Enhancement of Aluminum, Titanium, and Iron in Glass Using Pre-ablation Spark Dual-Pulse LIBS

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Abstract:

In this paper, we report the first enhanced emission for elements in a nonmetal or nonconducting matrix, glass, with the use of a preablation spark. The glass samples used in this work are prototypes of samples used to immobilize inorganic waste at the Savannah River Site Vitrification Facility. We have found that using a pre-ablation spark results in larger signal enhancements, 11- to 20-fold for titanium, aluminum, and iron in glass compared to the metal under the same experimental conditions. We also demonstrate that this method is more sensitive than single-pulse LIBS experiments for the direct solid sampling of vitrified waste glass.

Keywords: ABLATION; BREAKDOWN; DUAL-PULSE; GLASS; LASER; LASER-INDUCED; LASERINDUCED; LIBS; LIPS; PLASMAS; PRE-ABLATION; SPARK; SPECTROSCOPY; WASTE

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702001948871

Affiliations: Department of Chemistry and Biochemistry, The University of South Carolina, Columbia, South Carolina 29208

Publication date: December 1, 2000

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