Environmental radioactivity level at【优选3篇】
Environmental Radioactivity Level at Fukushima: An Ongoing Concern
篇一
第一篇内容
Introduction:
The Fukushima nuclear disaster in 2011 caused significant damage to the surrounding environment, including the release of a large amount of radioactive materials. Since then, monitoring the environmental radioactivity level at Fukushima has been of paramount importance to ensure the safety of the local population and mitigate further environmental contamination.
Monitoring Efforts:
Following the disaster, extensive monitoring efforts have been undertaken by various organizations, including the Japanese government, international bodies, and independent researchers. These efforts aim to assess the level of radioactive contamination in air, water, soil, and food, as well as to identify any potential health risks associated with exposure to radiation.
Air:
Continuous monitoring of air quality is conducted in and around Fukushima to measure the concentration of radioactive particles. This helps provide real-time information about the dispersion of radioactive materials and any potential risks to the population. In areas close to the Fukushima Daiichi Nuclear Power Plant, air contamination remains a concern, although the levels have significantly decreased compared to the immediate aftermath of the disaster.
Water:
Contamination of water sources, such as rivers and groundwater, is another major concern. Radioactive isotopes, particularly cesium-137 and strontium-90, have been detected in the nearby rivers and coastal areas. The government has implemented measures to control the spread of contaminated water and has initiated decontamination efforts to reduce the radioactivity levels in affected water bodies.
Soil:
Soil contamination is a significant challenge in Fukushima. High levels of cesium-137 and other radioactive isotopes have been detected in the top layer of soil, leading to restrictions on agricultural activities and the evacuation of certain areas. Decontamination efforts, such as removing the top layer of soil and implementing measures to prevent further contamination, are ongoing to ensure the safety of agricultural products and minimize the potential health risks for the local population.
Food Safety:
Ensuring the safety of food products from Fukushima is a priority. Strict regulations and monitoring programs have been put in place to test agricultural and seafood products for radioactive contamination. Any products found to exceed the safety limits are banned from the market. While the majority of products pass the safety standards, public confidence in Fukushima produce remains relatively low, posing challenges for the local economy and agricultural sector.
Conclusion:
The environmental radioactivity level at Fukushima continues to be a concern, even years after the nuclear disaster. Ongoing monitoring efforts and decontamination measures are crucial to ensure the safety of the local population and minimize the long-term environmental impact. Rebuilding public trust in Fukushima's agricultural products is also essential for the region's economic recovery.
Environmental radioactivity level at 篇三
Environmental radioactivity level at a mantle factory in eastern Zhejiang
The γ radiation level, alpha potential energy of thoron and alpha surface contamination level at amantle factory in the east of Zhejiang Province are reported. The measured results show that the additional annual ef-fective dose equivalent absorbed by the worker in some workshops of the factory was higher than 15mSv-management limit. The alpha surface contamination on the workers' hands in some workshops was 10 timesmore than the management limit of National Standard (0.04 Bq/cm2). The mantle factory's main danger to body wasinternal irradiation of α rays from thoron aerosol.
作 者： YE Ji-Da ZENG Guang-Jian WU Zong-mei Liu Hong-shi NI Shi-Ying 作者单位： Zhejiang Province Environmental Radiation Monitoring Center, Hangzhou 310012 刊 名：核技术(英文版) SCI 英文刊名： NUCLEAR SCIENCE AND TECHNIQUES 年，卷(期)： 200314(4)
