微波消解-原子荧光光谱法测定栀子中硒含量

Determination on Selenium in Gardenia by Microwave Digestion-Atomic Fluorescence Spectrometry Method

本文采用微波消解-原子荧光光谱法测定栀子中的硒元素含量。结果表明,使用8 mL硝酸和2 mL过氧化氢时,能够将0.300 0 g的栀子样品完全消解,并且荧光强度良好。方法在0~10μg·L^(-1)具有良好的线性关系,检出限为0.050 5 ng·mL^(-1),精密度为3.0%,加标回收率在96.80%~100.34%。该方法具有较高的准确性和灵敏度。

The content of selenium in gardenia jasminoides was determined by microwave digestion and atomic fluorescence spectrometry.The results showed that 0.3000 g of gardenia samples could be completely dissolved with 8 mL of nitric acid and 2 mL of hydrogen peroxide,and the fluorescence intensity was good.The detection limit was 0.0505 ng·mL^(-1),the precision was 3.0%,and the recoveries were 96.80%~100.34%.The method has high accuracy and sensitivity.