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DOI: 10.1039/A708844B (Paper) Reference Section for: J. Anal. At. Spectrom., 1998, 13, 589-595

Battery powered laser-induced plasma spectrometer for elemental determinations

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B. C. Castle, A. K. Knight, K. Visser, B. W.smith and J. D. Winefordner

Abstract

A battery powered, portable laser-induced breakdown spectrometry instrument with a low pulse energy laser and a low resolution, non-gated spectrometer is evaluated. Improvements in the instrument probe design were accomplished through studies of the plasma spatial development, lens-to-sample distance effects and spatial filtering. The prototype was evaluated on paint, steel, ores, and organic samples. Limits of detection ranged from 0.016% for Mn in NIST SRM steel to 0.13% for Ca in NIST SRM organic samples. Acceptable precision (0.4–4.9%) was obtained for steel, ore and organic SRM samples. The poorer precision (4.0–44.1%) obtained for the detection of Pb in paint can be attributed to the heterogeneity of the samples.

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