National Institute for Occupational Safety and Health

Name: NIOSH Manual of Analytical Methods — Beryllium in Surface Wipes by Field-Portable Fluorometry (9110)
Author: National Institute for Occupational Safety and Health

NIOSH Manual of Analytical Methods… (1994)

Summary

“NIOSH Manual of Analytical Methods — Beryllium in Surface Wipes by Field-Portable Fluorometry (9110)”, published in 1994, is a work by National Institute for Occupational Safety and Health. It explores elements such as beryllium, samples and detection.

Quotes from NIOSH Manual of Analytical Methods… (National Institute for Occupational Safety and Health)

National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ Rotator may also be substituted by a shaker or an agitator as long as the dissolution solution wets the wipe well. Sonication has also been shown to be effective. For dissolution of refractory materials such as high-fired beryllium oxide, agitation of the dissolution solution with the media must be replaced by heating to 80 °C for 30 minutes. Any standard dissolution process is particle-size dependent. ”

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Source: Wikisource

National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ Wear appropriate personal protection during sampling activities and analysis. It is essential that suitable gloves, eye protection, laboratory coat, etc., be used when working with the chemicals. Perform sample preparation and analysis in a clean, well-ventilated area that is well removed from any possible beryllium contamination. Any area affected by the dissolution or detection solutions must be immediately washed with plenty of water. Ammonium bifluoride will etch glass, so it is essential that all ammonium bifluoride solutions be contained in plastic labware. ”

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National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ Prepare a calibration graph of fluorescence intensity vs. beryllium concentration (ng/mL) in the stock standard. NOTE:
To test a range of 0.05 μg to 4 μg of beryllium on the sampling media, beryllium stock standard solutions are made up using beryllium spectrometric standards diluted with the ammonium bifluoride dissolution solution. A recommended series of stock standard solutions is (800, 200, 40, 10, and 0) ng/mL. As with the samples, the stock standards are prepared for analysis by adding 0.1 mL of beryllium stock standard into 1.9 mL of detection solution (20-fold dilution) . ”

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Source: Wikisource

National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ Experiments were conducted using an Ocean Optics® portable fluorescence device with the following components: USB 200 spectrometer with spectral grating #2 (UV/Vis 600) , LS-1 lamp (380 nm) in LS-450 housing, UV-2 casting, OFLV linear filter 200-850, L2 collection lens and slit-200. Tests were carried out in relative irradiance mode using 2- or 5-second integration times. The method was evaluated using beryllium oxide spiked onto Whatman #541 cellulose and nylon filters at levels of (0, 0.02, 0.1, 0.2, 0.3, 0.4, 1.5, 3.0, and 6.0) μg (five samples at each level) . ”

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Source: Wikisource

National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ The working range of the method is 0.005 μg to 6 μg for surface wipe samples. The analysis is for total beryllium and is not compound specific. INTERFERENCES: Minor interference from iron can result if iron concentrations are high. Samples high in iron demonstrate a yellow or gold coloration. This interference can be minimized by allowing the solution to sit for at least four hours, during which time the solution clears, and then filtering the sample extract before use. ”

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Source: Wikisource

National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ If alternative ratios of dissolution solution and detection solution are used for sample preparation, then a similar ratio for calibration is required. 10.
Analyze a stock standard, a reagent blank, and a media blank at least once every 20 samples. Ensure that the concentration range of the stock standards spans the beryllium levels found in the samples. 11. ”

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Source: Wikisource

National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ Validation of a standardized portable fluoresence method for determining trace beryllium in workplace air and wipe samples. J Environ Monit 2006 (8) : 619- 624. [2]
Ashley K, Agrawal A, Cronin J, Tonazzi J, McCleskey TM, Burrell AK, Ehler DS [2007] . Ultra-trace determination pf beryllium in occupational hygiene samples by ammonium bifluoride extraction and fluorescence detection using hydroxybenzoquinoline sulfonate. Analytica Chimica Acta 584 (2007) : 281-286. ”

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Source: Wikisource

National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)

“ U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 94–113. ”

National Institute for Occupational Safety and Health

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Quotes from NIOSH Manual of Analytical Methods… (National Institute for Occupational Safety and Health)

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