Abstract
Selenium contents of rice grown in Japan were analyzed by various methods. For the comparison of analytical methods, both fluorometry and neutron activation analysis gave reliable results. When two neutron activation analyses, measurements of activated 75Se and 77mSe, were used, average selenium contents o.f the 28 brown rice samples grown in Hokkaido, Hokuriku, Chugoku, Shikoku, and Kyushu were 32 ng/g dry weight (range: 13-83 mg/g) by 75Se and 36 ng/g (range: 16-88 ng/g) by 77mSe. From the data obtained, we concluded that the selenium content of brown rice grown in Japan was 30-40ng/g on the average.
