Beryllium - Agency for Toxic Substances and Disease RegistryBiomarkers. ▫ Beryllium in blood, urine and biological tissues can be used as biomarkers of exposure. Environmental Levels. Air. ▫ The average concentration in.beryllium concentration average,Toxicological Profile for Beryllium - Agency for Toxic Substances .The average concentration of beryllium in air in the United States is 0.03 ng/m3, but the . (16.1%) with an average concentration of 23.8 µg/L (EPA 2000a).Beryllium (Be) Toxicity: What Are the U.S. Standards for Beryllium .May 23, 2008 . An employee should not be exposed to a concentration of beryllium and . average): time-weighted average concentration to which nearly all.
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