(PDF) Beryllium natural background concentration and mobility…

This value was very high with Environ Monit Assess respect to the Italian law limits for soils (2 and 10 mg/kg for residential and industrial use respectively, as established by D.Lgs. 152/06) and the values generally reported in the scientific literature as average natural soil concentration (generally estimated to be in the range 2–6 mg/kg ...

Permissible Exposure Limits – OSHA Annotated Table Z-2

Acceptable Ceiling Concentration Acceptable maximum peak above the acceptable ceiling concentration for an 8-hr shift; Concentration Maximum Duration 8-hour TWA ... This standard applies to any operations or sectors for which the exposure limits in the beryllium standard, § 1910.1024, are stayed or is otherwise not in effect. Abbreviations. …

Beryllium Hazard Communication Program | Compliance …

The following links describe what beryllium is and where it is used: Periodic Table of Elements; Learn About the Element Beryllium; Beryllium Exposure Limits . Action Level (AL) – means a concentration of airborne beryllium of 0.1 microgram per cubic meter of air (µg/m3) calculated as an 8-hour time-weighted average (TWA).

Beryllium

Bertrandite (<1% beryllium) is the principal mineral mined for beryllium in the U.S. while beryl (4% beryllium) is the principal mineral mined for beryllium in the rest of the world. Beryllium is used industrially in three forms: as a pure metal, as beryllium oxide, and most commonly, as an alloy with copper, aluminum, magnesium, or nickel.

Beryllium Laboratory Analysis

Within the European Union, the Scientific Community on Occupational Exposure Limits (SCOEL) proposed an OEL based on an 8-hour TWA of 0.02 µg/m 3, a STEL of 0.2 µg/m 3 using the inhalable fraction of airborne beryllium concentrations, and a Biological Guidance Value (BGV) of 0.04 micrograms per liter of urine. The SCOEL proposal was …

Beryllium

Exposure Evaluation and Controls. Exposure to beryllium via inhalation of airborne beryllium or dermal contact with beryllium-containing dust, fume, mist or solutions can cause health effects. The following resources provide information on exposure limits and analytical methods used to evaluate workers' beryllium exposure.

Exposure Assessment

Beryllium concentrations in U.S. air have typically been lower than the detection limit of 0.03 ng/m 3 (ATSDR 2002). Natural sources of airborne beryllium are windblown dust and volcanic particles, which are estimated to contribute 5 and 0.2 metric tons per year, respectively, to the atmosphere ( Table 2-1 ).

Historical analysis of airborne beryllium concentrations at a …

Overall, the data indicate that for machining operations involving copper beryllium, the airborne concentrations for >95% of the samples were below the contemporaneous occupational exposure limits or the 1999 Department of Energy action level of 0.2 microg m(-3) and, in most cases, were below the LOD.

Beryllium Toxicity

Beryllium is the fourth element in the periodic table and is a light, brittle, and gray alkaline earth metal. Beryllium is found naturally in coal, rocks, dust, and soil and is typically bonded with other elements. It …

(PDF) A review on natural background concentration of beryllium …

The Be concentrations in different plant organs range from 0.01 to 63 ng/g that suggest a natural baseline for Be concentrations of 52 ng/g (95 percentile of non‐woody tissue) that may serve as ...

Beryllium Compliance Guide

Beryllium Exposure Limits Action Level (AL) – means a concentration of airborne beryllium of 0.1 microgram per cubic meter of air (µg/m 3 ) calculated as an 8-hour …

Ecological Soil Screening Levels for Beryllium

The Eco-SSLs for beryllium are 21 mg/kg dry weight (dw) for mammalian wildlife and 40 mg/kg dw for soil invertebrates. The Eco-SSLs are higher than the reported range …

BERYLLIUM AND BERYLLIUM COMPOUNDS

Beryllium concentrations in drinking-water are on average 0.19 μg/L, with a range of 0.01–1.22 μg/L (Kolanz, 2001). 1.5. Human exposure. ... The median general area concentration was at or below the detection limit, with measured concentrations ranging as high as 488.7 μg/m 3. Median personal breathing zone concentrations were 0.3 …

Beryllium Compounds

The average concentration of beryllium measured in the air in the United States during the 1980s was 0.03 nanograms per cubic meter (ng/m 3). Ambient concentrations …

Historical Analysis of Airborne Beryllium Concentrations at …

Airborne concentrations were consistently below the Occupational Safety and Health Administration permissible exposure limit for beryllium ... The average beryllium concentration for these samples was 0.51 μg m −3 (SD 0.052 μg m −3), with a range of 0.019–0.51 μg m −3.

POTENTIAL FOR HUMAN EXPOSURE

These regulations limit the discharge of beryllium-containing pollutants into navigable waters and into publicly-owned treatment works (POTWs). Wastewaters containing beryllium may therefore require treatment to reduce the concentration of beryllium. ... Beryllium concentrations ranged from 0.4 to 1.4 mg/kg in four background samples …

Determination of beryllium concentrations in UK ambient air

The mean beryllium concentration found in PM 10 was 0.05 ng m −3, with individual results ranging from 0.01 to 0.15 ng m −3 – approaching the 0.2 ng m −3 limit recommended by EPAQs (EPAQs, 2008). To the best of the authors' knowledge, this is the only example of actual measurements of beryllium in UK ambient air to date.

Exposure Assessment

Beryllium concentrations in U.S. air have typically been lower than the detection limit of 0.03 ng/m 3 (ATSDR 2002). Natural sources of airborne beryllium are windblown dust and volcanic particles, which are …

Beryllium contamination and its risk management in …

Beryllium concentrations increase non-linearly with decreasing clay content both due to the increased surface area and the retention of Be due to sorption at clay mineral surface sites and within the mineral lattice itself ... Beryllium also limits enzymatic activity by reducing energy and misbalancing essential elements' availability.

Scope and application

limit (PEL) or short-term exposure limit (STEL). This standard means this beryllium standard, 29 CFR 1910.1024. (c) Permissible Exposure Limits (PELs)—(1) Time-weighted average (TWA) PEL. The employer must ensure that no employee is exposed to an airborne concentration of beryllium in excess of 0.2 μg/m3 calculated as an 8-hour TWA.

en/beryllium concentration limit.md at main · dinglei2022/en

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Beryllium Compounds

The average concentration of beryllium measured in the air in the United States during the 1980s was 0.03 nanograms per cubic meter (ng/m 3). Ambient concentrations measured in 50 cities between 1977 and ... NIOSH recommended exposure limit to ensure that a worker can escape from an exposure condition

A review of the toxicity of beryllium in air

In terrestrial waters the beryllium content is generally below the detection limit of available analytical methods. However, Newcomb and Rimstidt (2002) record values of up to 10 µg/L beryllium in groundwaters from the USA, while Edmunds and Trafford (1993) found concentrations of up to 1.02 µg/L in major aquifers of the UK, with over 10

Summary of historical beryllium uses and airborne concentration …

The geometric mean airborne beryllium concentration for the period 1949-1989 for all technical areas was 0.04 microg Be/m(3) with 97 percent of all sample below the 2.0 microg Be/m(3) occupational exposure limit (OEL). Average beryllium concentrations per decade were less than 1 microg Be/m(3) and annual geometric mean concentrations in ...

10 CFR Part 850 -- Chronic Beryllium Disease Prevention …

The responsible employer must assure that no worker is exposed to an airborne concentration of beryllium greater than the permissible exposure limit established in …

A review on natural background concentration of beryllium …

Semantic Scholar extracted view of "A review on natural background concentration of beryllium prevalent in ambient air and different environmental matrices" by Munish Kumar et al. ... the notion behind the recent revision of Be permissible exposure limit (PEL) value from 2.0 μg/m3 to 0.20 μg/ m3 by OSHA and the associated safety challenges ahead.

Frequently Asked Questions: Beryllium and Beryllium …

Employers may rely on material, use, process, and air concentration information that indicates that the use or handling of a beryllium-containing material cannot, under any …

CDC

Beryllium metal Metal: A hard, brittle, ... Lower Explosive Limit. NA. Metal: Noncombustible Solid in bulk form, but a slight explosion hazard in the form of a powder or dust. ... Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is ...

1910.1024

(1) Soluble beryllium compounds containing beryllium in concentrations greater than or equal to 0.1 percent by weight; (2) Solutions containing beryllium in concentrations greater than or equal to 0.1 percent by weight; or (3) Visible dust, fumes, or mists containing …

Beryllium

An emission standard for beryllium extraction operations of not greater than 10 g per 24 h is required unless an owner or operator requests approval to meet an ambient concentration limit in the vicinity of the stationary source of 0.01 μg/m 3 averaged over a 30-day period (United States Code, 2000).

Beryllium and Beryllium Compounds

Beryllium concentrations in 50 personal samples collected at a secondary copper smelter in 1982–83 ranged ... by the US Atomic Energy Commission in 1949 of a 2 µg/m 3 8-h time-weighted average limit for occupational exposure to beryllium and a ceiling limit of 25 µg/m 3, applicable to all beryllium facilities under contract to the ...

SUBJECT: Characteristic Metal (D004-D011) Wastes

A generator determines that the following constituents are in its waste stream (concentrations as measured by the TCLP method): beryllium: 4.0 mg/L chromium: 2.5 mg/L nickel: 30 mg/L selenium: 4.0 mg/L vanadium: 2.0 mg/L zinc: 5.0 mg/L This waste is a D010 characteristic metal waste stream for selenium because its untreated

Permissible Exposure Limits – OSHA Annotated Table Z-1

Note: This table only includes occupational exposure limits (OELs) for substances listed in the OSHA Z-1 Table. OELs for hundreds of additional substances have been adopted by Cal/OSHA, NIOSH, and ACGIH.These organizations periodically make revisions to their OELs and so they should be consulted directly for their most current values and …

Quarterly Groundwater Monitoring Report First Quarter …

Concentration Limits (RAML 2017b). Table 1. Beryllium in 36-06 KD Date Well 36-06 KD Beryllium (mg/L) GPS 0.01 1/24/23 0.0125 2/15/23 0.0139 3/21/23 0.0102 Notes: Exceedances are bolded. Observed beryllium concentrations increased in 36-06 KD (Figure 2) after the well was redeveloped in August of 2020. 3.2 Dakota Sandstone Well …

Beryllium contamination and its risk management in …

Concentrations of naturally occurring Be in soils and sediments typically range from 0.1 to 100 mg kg −1 ( Taylor et al., 2003a; Kaste and Baskaran, 2012 ), with an …