| Autor: |
Van Sandt, Walter, Santomassino, Vincent, Rumble, Robert, Barlow, Oran |
| Zdroj: |
American Industrial Hygiene Association Journal; May 1962, Vol. 23 Issue: 3 p203-213, 11p |
| Abstrakt: |
A direct-reading emission spectrograph for the quantitative determination of beryllium on one-inch diameter filter paper discs has been developed to relieve the workload on the industrial hygiene chemistry laboratory. The instrument, constructed in our own shops, uses a Bausch and Lomb grating monochromator as its basic unit. Operation of the spectrograph is automatic; the amount of beryllium on the filter paper is read directly from a meter. The filter paper sample discs are used with specially designed high-purity graphite electrodes. Spark excitation of the sample is by a small Bausch and Lomb spark source. The instrument is suitable for detecting concentrations of beryllium ranging from 0.01 to 10 micrograms. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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