Natural radiations with health at global scale and in some Vietnamese urban areas
La Thanh Long, Nguyễn Ngọc Chân,
Nguyễn Bá Ngạn, Nguyễn Quang Miên
Up to date, high-level dosage radiation has been studied relatively comprehensively, including permitted dose, exposure level and preventive measures. In order to protect people exposed to radioation (radioactive materials or ionized radiation), in every country, there are reference manuels that guide the sanitation and radioactive safety in accordance to the scientific and technological level, social-economical-political conditions of each country. The low-level dosage radiation, however, is still in debate among worldwide scientists.
In general, there still is a gap on documents showing the comprehensive results on the harmfull effect caused by low dosage radiation. Thus, it is difficult to link between some serious diseases, like white blood, lung cancer, liver cancer, etc. with low dosage radiation. A very vague explaination often used for those diseases and low dosage radiation is also mentioned in some cases. This shows that environmental radiation is a complicated issue. How to define and distinguish which part of the radiation, especially the low dosage radiation, affects the human, animal and plant health is still unclear. Thus, the consideration on low dosage radiation in relation to health is one of the important tasks in environmental geophysics.
The study on the harmful effect of environmental radiation on human, animal and plant health in our country is still limited, just to mention some pressing problems, e.g. natural environmental radiation baseline, minimal exposure level and harmful effects of low dosage radiation, etc.. This paper presents 4 main contents, i.e.: essence of natural environmental radiation; impact of ionized radiation on human; some disease manifestations of body when suffered from radiative effect, and some research projects to investigate the natural environmental baseline aiming at health protectionin the world and in Việt Nam.
Ngày nhận bài: 21/10/2008
Biên tập: Tăng Đình