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1910.1024 Beryllium. Occupational Safety and Health

Definitions.As used in this standard: Action level means a concentration of airborne beryllium of 0.1 micrograms per cubic meter of air (μg/m 3) calculated as an 8-hour time-weighted average (TWA). Airborne exposure and airborne exposure to beryllium mean the exposure to airborne beryllium that would occur if the employee were not using a respirator.

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Quantifying beryllium concentrations in plant shoots from

1 INTRODUCTION. The alkaline earth metal element beryllium (Be) occurs in trace amounts in environmental material. 1 Whereas the Be concentration of the upper continental crust is about 3 μg/g (ref. 2) the Be concentration of river water is in the low ng/L range (eg, see refs. 1, 3-5).Beryllium is known to be one of the most toxic elements, and beryllium concentrations reported in non‐crop

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Initial measurement of beryllium‐9 using HR‐ICP‐MS allows

Initial measurement of beryllium‐9 using HR‐ICP‐MS allows for more precise applications of the beryllium isotope system within the Earth sciences

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Beryllium Overview Occupational Safety and Health

The element beryllium is a grey metal that is stronger than steel and lighter than aluminum. Its physical properties of great strength-to-weight, high melting point, excellent thermal stability and conductivity, reflectivity, and transparency to X-rays make it an essential material in the aerospace, telecommunications, information technology, defense, medical, and nuclear industries.

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Beryllium standard for construction version comparison

Action level means a concentration of airborne beryllium of 0.1 micrograms per cubic meter of air ( g/m3) calculated as an 8-hour time-weighted average (TWA). Airborne exposure and airborne exposure to beryllium mean the exposure to airborne beryllium that would occur if

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Fourth Edition Beryllium Final January 2010

In most natural waters, the majority of beryllium will be adsorbed to suspended matter or in sediment, rather than dissolved. For example, in the Great Lakes in the United States of America (USA), beryllium is present in sediment at concentrations several orders of magnitude higher than its concentration in water. Beryllium in sediment is

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Quantifying beryllium concentrations in plant shoots from

1 INTRODUCTION. The alkaline earth metal element beryllium (Be) occurs in trace amounts in environmental material. 1 Whereas the Be concentration of the upper continental crust is about 3 μg/g (ref. 2) the Be concentration of river water is in the low ng/L range (eg, see refs. 1, 3-5).Beryllium is known to be one of the most toxic elements, and beryllium concentrations

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Clearance, translocation, and excretion of beryllium

Beagle dogs inhaled radiolabeled beryllium oxide (7BeO) particles that were calcined at either 500 or 1000 degrees C, resulting in either high (mean of 50 micrograms/kg body wt) or low (mean of 17 micrograms/kg body wt) initial lung burdens (ILBs) of both preparations of BeO. Levels of beryllium

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Initial measurement of beryllium‐9 using HR‐ICP‐MS allows

Initial measurement of beryllium‐9 using HR‐ICP‐MS allows for more precise applications of the beryllium isotope system within the Earth sciences

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Initial measurement of beryllium-9 using HR-ICP-MS allows

Jan 27, 2021· Initial measurement of beryllium-9 using HR-ICP-MS allows for more precise applications of the beryllium isotope system within the Earth sciences. Adam D Sproson Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan.

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Berylliosis NORD (National Organization for Rare Disorders)

The severity of the condition may depend upon the duration of beryllium exposure, the concentration of the irritant, and/or other factors. Chronic berylliosis is a systemic disease in which there is an abnormally exaggerated immune response (hypersensitivity) to beryllium. The onset of symptoms after initial beryllium exposure may be extremely

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Adsorption of beryllium on peat and coals ScienceDirect

Jan 01, 1970· The adsorptive capacity of peat, vitrinite and xylite was almost the same, provided that the initial beryllium concentration of the solution was not greater than 0-22 mg equiv. Further increase of the initial concentra- tion of beryllium in the solution led to considerable differences in the quantity adsorbed.

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A Cluster of Beryllium Sensitization Traced to the

Based on the initial reports of the repetitive exposure to concrete dust from the nearby concrete factory (Fig 1A), we analyzed corresponding concrete dust samples from this factory, revealing a beryllium concentration of 1.1 mg/kg (Fig 2, dark grey bar).

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(PDF) Beryllium natural background concentration and

Beryllium is widely distributed in soils at low levels, but it can also occur naturally in higher concentrations in a variety of materials exploited for many industrial applications.

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Linking Science to May, 2003 Ambient Levels of Metals in

the 90th percentile arsenic concentration from the urban Piedmont study, which slightly exceeded the arsenic criterion. Otherwise, only certain individual samples contained metal concentrations above current criteria. A single rural soil sample yielded a beryllium concentration slightly above the corresponding criterion. For the

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Beryllium Be PubChem

Beryllium is a hard, grayish metal naturally found in mineral rocks, coal, soil, and volcanic dust. Beryllium compounds are commercially mined, and the Beryllium is purified for use in nuclear weapons and reactors, aircraft and space vehicle structures, instruments, x-ray machines, and mirrors. Beryllium ores are used to make speciality ceramics for electrical and high

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II. BERYLLIUM CONCENTRATION IN FISH

Beryllium Uptake by the Common Guppy Using Radioisotope 7Be. II. Beryllium Concentration in Fish. 4. DESCRIPTIVE NOTES (Type of report and Inclusive dates) Final Report, 1970-1971 5. AU THOR(S) (First name, middle initial, lest name) Arnold R. Slonim, PhD Frederick C. Damm, Captain, USAF 6. REPORT DATE 7a. TOTAL NO. OF PAGES 7b.

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A Cluster of Beryllium Sensitization Traced to the

A Cluster of Beryllium Sensitization Traced to the Presence of Beryllium in Concrete Dust For the initial patient, the diagnosis of sarcoidosis was reclassified as CBD based on beryllium concentration.11 Prolonged exposure to beryllium subsequently may lead to beryllium

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California Code of Regulations, Title 8, Section 5205

Action level means a concentration of airborne beryllium of 0.1 micrograms per cubic meter of air (μg/m 3) calculated as an 8-hour time-weighted average (TWA). Airborne exposure and airborne exposure to beryllium mean the exposure to airborne beryllium that would occur if the employee were not using a respirator.

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