Radioactive atoms

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  • In 1961 the NCRP issued NCRP Report No. 28, A Manual of Radioactivity Procedures, which was published as the National Bureau of Standards Handbook 80. The report came to be one of the definitive works in the area of radioactivity measurements. As the development of new techniques, procedures, and equipment made parts of the Report obsolescent, the NCRP recognized the need to update and extend the document.

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  • R RADIATION ECOLOGY Radiation Ecology or Radioecology is a term that came into common usage in 1956 to denote that area of the broad field of ecology concerned with the assessment of radioactivity in the environment. More specifically, radiation ecology has come to be recognized as that area of ecology concerned with radioactive substances, radiation and the environment.

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  • Ionic methods of separation have been used since the industrial revolution in Europe to reduce hardness of water. In the mid-nineteenth century, British researchers treated various clays with ammonium sulfate or carbonate in solution to release calcium. In the early twentieth century, zeolite columns were used to remove interfering calcium and magnesium ions from solutions to permit determination of sulfate. Ionic separation procedures were used in the Manhattan project to purify and concentrate radioactive materials needed to make atom bombs.

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  • Few members of the general public are fully aware of the extent to which the atomic age affects their everyday lives. For many, bombs and power plants are their only associations with the term. The uses and benefits of radioactive isotopes in medicine, agriculture, industry, and science are widespread, however, allowing us to perform many tasks more accurately, more simply, less expensively, and more quickly than would otherwise be possible. In many cases, biological tracers for example, there is no alternative.

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