Beryllium Air Monitor

Abstract

An automatic air sampling system has been combined with a direct reading spectrograph into a mobile cabinet for the continuous quantitative determination of beryllium particulate matter in air. An analysis is reported every 75 sec with a precision of about 20% at the 95% confidence level. Sensitivity is about 0.5 μg/m3 beryllium.

Emission Spectrometry

“…Dust is drawn through a tube into a discharge vessel, the spectrum is excited with a spark, and the radiation is recorded photoelectrically. Rozsa et al (266) have described a spectrometer which automatically monitors the beryllium content of air each 75 seconds. Air containing beryllium particles is drawn through a filter paper which is then moved into a spark discharge.…”

Time-resolved laser-induced breakdown spectrometry of aerosols

“…We have applied LIBS to direct sampling of beryllium in air. It is a problem in environmental monitoring which has been previously approached by emission spectroscopy (32)(33)(34). For purposes of calibration and limit-of-detection measurements, we chose to generate beryllium in air via the nebulizer/heat-chamber apparatus.…”

Air pollution

“…PARTICULATES AND AEROSOLS Inorganic Particulates. An automatic air sampling system has been combined with a direct-reading spectrograph to analyze beryllium in particulates every 75 seconds with a sensitivity of 0.5 gg per cubic meter (224) After lead is collected on an iodine column or millipore filter and extracted, lead can be determined by atomic absorption spectroscopy with a sensitivity of 0.013 ppm at 2170 A by use of an oxyhydrogen flame and T-piece adapter (39). Anionic interferences were eliminated by use of EDTA.…”