Analysis of Total Se Content in Rice

Abstract

Total Se content in rice is normally low and it is difficult to determine it exactly because of Se volatilization and pollution during the digestion process. In this method, rice sample is digested thoroughly and Se volatilization is reduced greatly by designing a specific digestion tube, increasing digestion temperature by three steps, controlling the amount of mixed acid and adjusting the location of digestion tube in the digestion furnace. Se pollution is also reduced greatly by specific cleaning treatments.