1986 the worst nuclear leakage accident took Place at the Chernobyl Nuclear Power Plant.Radioactive substances released from the destroyed nuclear reactor were dispersed all over the world
and caused panic and shock worldwide.The countries near the Soviet Union were seriously polluted. More than ten test and survey stations in China conducted emergency tests and analysed samples taken of vegetables
cow milk
air
breast milk
infant thyroid
drinking water
and sheep thyroid.The results showed: 1. Pollution levels of radionuclides released from the Chernobyl accident ate comparable to that caused by atmospheric nuclear tests. 2. Radioactive contamination caused by the accident has affected little the health of the people in Chi-