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7 Ιουλ 2023 · Every day, people inhale and ingest forms of radiation from air, food and water. Today, the most common artificial sources of human exposure to radiation are X-ray machines and radiopharmaceuticals used for diagnostic or radiotherapy and other medical devices.
- Ionizing Radiation, Health Effects and Protective Measures
People are exposed to natural sources of ionizing radiation,...
- Ionizing Radiation, Health Effects and Protective Measures
Natural Radionuclides. Sources of Low-Let Radiation. Some of the radionuclides that are responsible for the natural radioactivity in drinking water come from radioactive elements, and their decay products, that were incorporated in the earth at its formation, and others are produced continuously by cosmic ray bombardment.
27 Ιουλ 2023 · People are exposed to natural sources of ionizing radiation, such as in soil, water, and vegetation, as well as in human-made sources, such as x-rays in medical devices. Ionizing radiation has many beneficial applications, including uses in medicine, industry, agriculture and research.
The use of radiation in medicine for diagnosis and treatment is the largest human-made source of radiation exposure today. The testing of nuclear weapons, routine discharges from industrial and medical facilities and accidents such as Chernobyl have added human-made radionuclides to our environment.
Natural radioactive sources in the soil, water and air contribute to our exposure to ionizing radiation, as well as man-made sources resulting from mining and use of naturally radioactive materials in power generation, nuclear medicine, consumer products, military and industrial applications.
Water sources can contain radionuclides of natural and artificial origin (i.e. human- made): Natural radionuclides, including potassium-40, and those of the thorium and ur-
On average, our radiation exposure due to all natural sources amounts to about 2.4 mSv a year - though this figure can vary, depending on the geographical location by several hundred percent. In homes and buildings, there are radioactive elements in the air.
