分光光度法测定植物中的微量硒

Determination of Trace Selenium in Plants by Spectrophotometry

用两种分光光度法测定了植物中的微量硒，试样以分步加酸的方法分解，试样、ＨＮＯ３和ＨＣｌＯ４的比例为１∶１０∶３。测定效果好，硒回收率＞９６．０％。

The trace selenium in plants was determined by means of spectrophotometries. The sample was decomposed by adding acids seperately. The ratio between sample, HNO3 and HClO4 is 1∶10∶3.The result of determination is satisfactory with recovery rate of over 96. 0% .