人血中硒含量很低,正常值范围为0.057～0.320mg.1~(-1).在研究硒与疾病关系时,需要灵敏度高,简便的分析方法。在高氯酸溶液中,SeSO_3~(2-)-KIO_3催化体系示波导数极谱测定微量硒,灵敏度高,已用于矿物,天然水及面粉中硒的测定。我们将此催化波法用于血中硒的测定,取样100μ1,在锥形瓶中消化,得到较满意的结果。 Selenium content in human blood is very low, the normal range of 0.057 ~ 0.320mg.1 ~ (-1) .In the study of the relationship between selenium and disease, the need for high sensitivity and simple analytical methods. In perchloric acid solution, the SeSO_3 ~ (2 -) - KIO_3 catalytic system has the advantages of high sensitivity and sensitivity by using the guided-wave polarographic determination of trace selenium. It has been used in the determination of selenium in mineral, natural water and flour. We will this catalytic wave method for the determination of blood selenium, sampling 100μ1, digested in a conical flask, get more satisfactory results.