Cesium (Cs) is a chemical element that can pose an environmental hazard when its radioactive isotopes, particularly cesium-137, are released. This isotope is produced by accidents and nuclear explosions in nuclear reactors, making it a dangerous pollutant for long periods due to its long half-life of approximately 30 years.<br />Sources of Cesium Pollution<br />Radioactive cesium is present in the environment through several factors, the most important of which are:<br />• Nuclear tests: conducted over the past century and contributed to the release of radioactive cesium isotopes into the environment.<br />• Nuclear reactor accidents: such as the Chernobyl reactor (1986) in Ukraine and the Fukushima reactor (2011) in Japan, where reactor meltdowns led to the release of radioactive cesium-137 into the environment.<br />• Nuclear waste leakage: from unsafe nuclear facilities or improper disposal.<br />Environmental Effects<br />When the radioactive isotope cesium-137 leaks into the environment, it enters the ecosystem through several sources, including:<br />• Absorption by plants, which leads to cesium-137 being transferred through the food chain to animals and humans.<br />• Water and soil contamination, as it can remain in the soil for long periods and affect agricultural crops.<br />• Airborne spread during nuclear accidents, causing it to fall over large areas via radioactive rain.<br />Health Effects<br />Exposure to a radioactive isotope of cesium can lead to serious health effects, including:<br />• Increased risk of tissue cancer, especially of the lungs and thyroid gland.<br />• Health problems affecting kidney and liver function due to the bioaccumulation of the radioactive isotope.<br />• Its effect on the immune system and the destruction of blood cells.<br />Mechanisms for Reducing Cesium-137 Contamination<br />To combat cesium-137 contamination, various strategies can be followed:<br />• Removing contamination from soil using techniques such as replacing surface layers or chemical soil washing.<br />• Monitoring water and food to prevent the transmission of radioactive cesium to humans through the food chain.<br />• Improving the safety of nuclear reactors and strengthening the International Agency for Radiological Protection to prevent accidents that lead to radiation leaks.<br />• Safe disposal of radioactive nuclear waste by storing it in leak-proof facilities.<br />Conclusion<br />Contamination with the radioactive isotope cesium-137 poses a serious health and environmental challenge. Addressing it requires advanced technologies and strict preventive measures. It is crucial to enhance and support the role of scientific research on methods for removing contamination and reducing its effects on humans and the environment to ensure a safer future.<br />"AL_mustaqbal University is the first university in Iraq"<br/><br/><a href=https://uomus.edu.iq/Default.aspx target=_blank>al-mustaqbal University Website</a>