氢化物发生—原子荧光光谱法快速测定粉煤灰中微量硒

DETERMINATION OF SELENIUM IN COAL ASH BY HYDRIDE ATOMIC FLUORESCENCE SPECTROMETRY

随着环境科学与入体健康研究的深入，硒作为人体必需的15种微量元素之一，尤为科技工作者所重视。硒属于一种稀散微量元素，主要用于电子和电器工业以及导弹，高空通讯设备等。在半导体、橡胶、石油工业中，硒也有着广泛的用途。人体硒水平偏低，可致老年期衰减速度加快，合理地补充硒可以预防和治疗心血管疾病，增强体液的免疫力，并能有效地防止肿瘤的扩展，起到预防和治疗癌症的作用。本文应用专属性强的AFS方法分析证实，对测定粉煤灰中的硒，具有简单快速、准确灵敏、取样量少、测定范围宽等优点。其加标回收率在：90．0％。101．0％之间．RSD为：3．36％。6．02％。

With the development of research on Environmental Science and human health of selenium, as one of the 15 essential trace elements in human body, especially the scientific workers of the importance. Selenium is a kind of rare trace elements, mainly used in electronic and electrical appliances industry and missiles, air communication equipment. In a semiconductor, rubber, petroleum industry, also have a wide range of uses of selenium. The human body can cause the low selenium level, senile decay faster, the reasonable supplement of selenium can prevent and treat cardiovascular disease, enhance humoral immunity, and can effectively prevent cancer, play the role of prevention and treatment of cancer.