1. The data in this table is updated in real time.

2. This update time: 18:00 on March 31, 2011

        The relevant person in charge of the Ministry of Environmental Protection (National Nuclear Safety Administration) said that on March 31, the environmental protection departments were in Heilongjiang, Jilin, Liaoning, Beijing, Tianjin, Hebei, Henan, Shanxi, Inner Mongolia, Shandong, Shanghai, Jiangsu, Zhejiang, and Anhui. A very small amount of the artificial radionuclide iodine-131 was detected in aerosol sampling at monitoring points in, Fujian, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Shaanxi, Gansu, Qinghai, and Ningxia, all at a concentration of 10-4 Baker/ In addition, very small amounts of the radionuclides cesium-137 and cesium-134 have been detected in Shandong, Zhejiang, Anhui, and Guangdong, and the concentrations are all on the order of 10-5 beckers/cubic meter and below. Combined with the analysis of radiation environment monitoring data in recent years, it was preliminarily confirmed that the artificial radionuclides detected in various places came from the Fukushima nuclear accident in Japan. The aerosol sampling and monitoring points set up by the environmental protection department in other parts of the country have not confirmed the detection of artificial radionuclides. Compared with the previous period, new areas where artificial radionuclides have been detected are Liaoning, Hunan, Guizhou, Gansu, and Qinghai. See the attached table for the detection results of artificial radionuclides in the ambient air across the country.

        The radiation dose caused by artificial radionuclides detected in various places is extremely weak, only on the order of 10-7 microsieverts/hour, which is smaller than the natural background formed by natural radiation sources such as rocks, soil, buildings, food, and the sun. One hundred thousandth of the radiation dose rate (about 0.1 microsievert/hour) is still within the normal fluctuation range of the local background radiation level; the public is exposed to such an environment, the additional received within one year The radiation dose is only equivalent to one-thousandth of the radiation dose received by flying two thousand kilometers in an airplane. Therefore, there will be no impact on the environment and public health, and no protective measures need to be taken.