粳稻谷中镉和无机砷分布探讨

Discussion on the distribution of cadmium and inorganic arsenic in japonica rice

通过对糙米和大米中镉和无机砷含量的分析,发现镉在粳稻谷中分布较均匀,其含量在糙米和大米中基本一致;而无机砷在粳稻谷中主要分布在表皮,糙米通过精加工碾磨成大米后,其无机砷含量约降低了2倍。为去除粮食中重金属残留,实现粮食资源的合理化应用提供依据。

The content of cadmium and inorganic arsenic in brown rice and rice was detected.The results showed that cadmium was distributed evenly in the japonica rice,the content in brown rice and rice was nearly the same;while the inorganic arsenic in japonica rice was mainly distributed in the epidermis.Af-ter being processed from brown rice to rice arsenic content reduced 2 times.It provided a basis for remov-al of heavy metal residues in food and rational application of grain resources.