CDC - NIOSH Pocket Guide to Chemical Hazards - Beryllium
Beryllium metal Metal: A hard, brittle, gray-white solid. CDC - NIOSH Pocket Guide to Chemical Hazards - Beryllium & beryllium compounds (as Be) Skip directly to site content Skip directly to page options Skip directly to A-Z link
fluorescence intensity vs. beryllium concentration (ng/mL) in the stock standard. NOTE: To test a range of 0.05 μg to 6 μg of beryllium on the sampling media, beryllium stock standard solutions are made up using beryllium spectrometric standards diluted with theammonium bifluoride dissolution solution.
Beryllium compounds - IDLH | NIOSH | CDC
However, the revised IDLH for beryllium compounds is 4 mg Be/m3 based on being 2,000 times the OSHA PEL of 0.002 mg Be/m3 (2,000 is an assigned protection factor for respirators; only the “most reliable” respirators are recommended for exposures greater …
2007年4月6日 · beryllium concentration can be prepared by 10-fold dilution of the stock standards mentioned in the note above. As with the samples, these stock standards are prepared for analysis by add-ing 0.4 mL of beryllium stock standard into 1.6 mL of detection solution (5-fold dilution). Please see Table 2.
beryllium dusts, fumes, mists, and beryllium-containing solutions and suspensions. Install, use, and maintain effective engineer-ing controls for processes that create beryllium dusts, fumes, mists, and beryllium-containing solutions and suspensions. Keep airborne concentrations of beryllium as low as possible, since a safe exposure limit for
2007年4月6日 · beryllium concentration can be prepared by 10-fold dilution of the stock standards mentioned in the note above. As with the samples, these stock standards are prepared for analysis by add-ing 0.4 mL of beryllium stock standard into 1.6 mL of detection solution (5-fold dilution). Please see Table 2.
Docket 077: Manual of Analytical Methods, Beryllium - CDC
use of beryllium oxide spikes in quality control testing have been included as suggested. However, inclusion of a general beryllium salts or beryllium silicate recovery discussion were not included since the focus of the research is the recovery of the most commonly encountered workplace beryllium compounds (beryllium metal and beryllium oxide).
Occupational exposure to beryllium occurs at places where the chemical is mined, processed, or converted into metal, alloys, and other chemicals. Workers engaged in machining metals containing beryllium, recycling beryllium from scrap alloys, or using beryllium products may also be exposed to higher levels of beryllium.
Beryllium surface compliance levels (DOE: 10 CFR 850) Equipment release: 0.2 μg Be/100 cm. 2. Housekeeping: 3.0 μg Be/100 cm. 2 (But no information on sampling methodology) “ Analysis by AIHA-accredited lab or equivalent ”
BERYLLIUM and compounds, as Be: METHOD 7102, Issue 2, dated 15 August 1994 - Page 3 of 3 CALIBRATION AND QUALITY CONTROL: 9. Calibrate daily with at least six working standards over the range 0.005 to 1 µg Be per sample. a. Use serial dilutions of known amounts of calibration stock solution in 2% Na 2SO 4/ 3% H 2SO 4 to prepare working standards.