Authors: Cremers, David A.¹; Radziemski, Leon J.²

Source: Applied Spectroscopy, Volume 39, Issue 1, Pages 1-183 (January/February 1985) , pp. 57-63(7)

Publisher: Society for Applied Spectroscopy

Abstract:

A method has been developed to spectrochemically analyze beryllium particles on filters using the laser spark. The spark, formed on the filter by a cylindrical lens, is 0.1-mm wide and 4- to 8-mm long. By the rotation of the filter under the spark, a large area can be sampled in only a few minutes. The surface detection limit (SNR = 6) for particles 0.5-5 μm in diameter is 0.45 ng/cm², which corresponds to 3.6 ng total Be mass on the exposed area (32-mm diam.) of a 37-mm-diam. filter. The RSD for replicate sample analysis is 4%. Several methods of calibrating the technique are discussed. The effects of particle size and some contaminants on the analysis are described. The usefulness of this method for monitoring airborne beryllium concentrations is considered.

Keywords: Analyses, beryllium; Emission spectroscopy; Lasers, Nd: YAG; Methods, analytical; Laser spark

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702854249349

Affiliations: 1: University of California, Los Alamos National Laboratory, Chemistry Division, Los Alamos, New Mexico 87545; present address: MS J567, Los Alamos National Laboratory, Los Alamos, NM 87545 2: University of California, Los Alamos National Laboratory, Chemistry Division, Los Alamos, New Mexico 87545; present address: New Mexico State University, Physics Dept., P.O. Box 3D, Las Cruces, NM 88003

Publication date: 1985-01-01

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