November 16th . A scientific research team from the University of Tokyo in Japan published a research result in the British “Scientific Reports” on the 16th, saying that groundwater collected near the Fukushima Daiichi Nuclear Power Plant was detected to contain concentrations exceeding natural standards. The radioactive substance tritium.
According to Kyodo News Agency and the Mainichi Shimbun’s report on the 16th, a research team composed of the Toda Environmental Analytical Chemistry Laboratory and others made observations at 10 locations around the Fukushima Nuclear Power Plant during the six years from December 2013 to December 2019. Groundwater, investigate the concentration of radioactive substances such as tritium.
As a result, an average of 20 becquerels per liter of tritium was continuously detected in multiple places. According to the research team, this is the first time that tritium has been continuously detected in the groundwater surrounding the Fukushima Daiichi Nuclear Power Plant.
According to reports, tritium is also contained in natural rainwater and other substances, but the concentration is less than 1 becquerel. Team member Katsumi Kozugawa believes that the origin of tritium can only be the Fukushima Daiichi Nuclear Power Plant. The research team also pointed out that it is necessary to adopt a stricter surveillance system around the site.