The Beryllium Thread

[Simplex3]

I'm putting this in here so that it won't hang around the top of the lounge while I cut and paste information in to post after post.

This is part of my ongoing offseaon attempt to get us ranked on the first page of some search engine(s) when nerds search for "beryllium".

Before you PM me with "Why?", the answer is simply that I am sitting around reading log files at work and cutting and pasting into this thread requires absolutely NO mental stress.

[2112]

How can beryllium affect my health?

Beryllium can be harmful if you breathe it. The effects depend on how much you are exposed to and for how long. If beryllium air levels are high enough (greater than 1000 µg/m3), an acute condition can result. This condition resembles pneumonia and is called acute beryllium disease Occupational and community air standards are effective in preventing most acute lung damage.

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Some people (1-15%) become sensitive to beryllium. These individuals may develop an inflammatory reaction in the respiratory system. This condition is called chronic beryllium disease (CBD), and can occur many years after exposure to higher than normal

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This disease can make you feel weak and tired, and can cause difficulty in breathing. It can also result in anorexia, weight loss, and may also lead to right side heart enlargement and heart disease in advanced cases. Some people who are sensitized to beryllium may not have any symptoms. The general population is unlikely to develop acute or chronic beryllium disease because ambient air levels of beryllium are normally very low (0.00003-0.0002 µg/m3).

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Swallowing beryllium has not been reported to cause effects in humans because very little beryllium is absorbed from the stomach and intestines. Ulcers have been seen in dogs ingesting beryllium in the diet. Beryllium contact with skin that has been scraped or cut may cause rashes or ulcers.

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How likely is beryllium to cause cancer?

Long term exposure to beryllium can increase the risk of developing lung cancer in people.

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The Department of Health and Human Services (DHHS) and the International Agency for Research on Cancer (IARC) have determined that beryllium is a human carcinogen. The EPA has determined that beryllium is a probable human carcinogen. EPA has estimated that lifetime exposure to 0.04 µg/m3 beryllium can result in a one in a thousand chance of developing cancer.

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How can beryllium affect children?

There are no studies on the health effects of children exposed to beryllium. It is likely that the health effects seen in children exposed to beryllium will be similar to the effects seen in adults. We do not know whether children differ from adults in their susceptibility to beryllium.

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We do not know if exposure to beryllium will result in birth defects or other developmental effects in people. The studies on developmental effects in animals are not conclusive.

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How can families reduce the risk of exposure to beryllium?

* Most families will not be exposed to high levels of beryllium.
* Children should avoid playing in soils near uncontrolled hazardous waste sites where beryllium may have been discarded.

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Is there a medical test to show whether I've been exposed to beryllium?

Beryllium can be measured in the urine and blood. The amount of beryllium in blood or urine may not indicate how much or how recently you were exposed. Beryllium levels can also be measured in lung and skin samples. These tests are not usually available at your doctor's office, but your doctor can send the samples to a laboratory that can perform the tests.

Another blood test, the blood beryllium lymphocyte proliferation test (BeLPT), identifies beryllium sensitization and has predictive value for CBD.

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Has the federal government made recommendations to protect human health?

The EPA restricts the amount of beryllium that industries may release into the air to 0.01 µg/m3, averaged over a 30-day period.

The Occupational Safety and Health Administration (OSHA) sets a limit of 2 µg/m3 of workroom air for an 8-hour work shift.

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References

Agency for Toxic Substances and Disease Registry (ATSDR). 2002. Toxicological Profile for Beryllium. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service.
to

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Beryllium (IPA: /bəˈrɪliəm/) is the chemical element that has the symbol Be and atomic number 4. A bivalent element, elemental beryllium is a steel grey, strong, light-weight yet brittle, alkaline earth metal. It is primarily used as a hardening agent in alloys (most notably beryllium copper).

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Notable characteristics

It has the highest melting points of the light metals. The modulus of elasticity of beryllium is approximately 1/3 greater than that of steel. It has excellent thermal conductivity, is nonmagnetic and resists attack by concentrated nitric acid. It is highly permeable to X-rays, and neutrons are liberated when it is hit by alpha particles, as from radium or polonium (about 30 neutrons/million alpha particles). At standard temperature and pressures beryllium resists oxidation when exposed to air (although its ability to scratch glass is probably due to the formation of a thin layer of the oxide). The speed of sound in beryllium (12,500m/s) is greater than in any other element.

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The name beryllium comes from the Greek beryllos, beryl, from Prakrit veruliya, from Pāli veuriya; possibly from or simply akin to a Dravidian source represented by Tamil veiruor, viar, "to whiten, become pale."[1] At one time beryllium was referred to as glucinium (from Greek glykys, sweet), due to the sweet taste of its salts (with the accompanying chemical symbol "Gl" [2]) .