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Several of these workers died from illnesses caused by radium exposure. [5] Many rocks and soils contain low concentrations of 226 Ra, which forms from the radioactive decay of naturally occurring uranium. The decay of 226 Ra produces radon-222, a radioactive gas that can accumulate in inadequately ventilated homes and other enclosed spaces.
The book suggests that radium-228 exposure is more harmful to health than exposure to radium-226. Radium-228 is more likely to cause cancer of the bone as the shorter half-life of radon-220 compared to radon-222 causes the daughter nuclides of radium-228 to deliver a greater dose of alpha radiation to the bones. It also considers the induction ...
[11] These imaging techniques use ion radiation to make detailed images of the internal structure of body parts which are vital roles in healthcare for diagnostic and therapeutic purposes. The implementation of preventive measures is essential in order to decrease the risk of exposure and to make sure healthcare workers are safe and protected.
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The company is notable for being involved in the radium poisoning of the Radium Girls. The workers in the factories were told that the radium paint was harmless. Radium's negative health effects were well-known at the time, however it was thought that small amounts of radium were not dangerous and even a cure for lack of energy. [1]
Radium paint was widely used for 40 years on the faces of watches, compasses, and aircraft instruments, so they could be read in the dark. Radium is a radiological hazard, emitting gamma rays that can penetrate a glass watch dial and into human tissue. During the 1920s and 1930s, the harmful effects of this paint became increasingly clear.
The radium isotope (226 Ra) used has a half-life of about 1,600 years, [7] so radium dials remain essentially just as radioactive as when originally painted 50 or 100 years ago, whether or not they remain luminous. Radium dials held near the face have been shown to produce radiation doses in excess of 10 μSv / hour.
Radon is produced commercially by a solution of radium-226 (half-life of 1,600 years). Radium-226 decays by alpha-particle emission, producing radon that collects over samples of radium-226 at a rate of about 1 mm 3 /day per gram of radium; equilibrium is quickly achieved and radon is produced in a steady flow, with an activity equal to that of ...