原子荧光光谱法和快速测汞仪法测定粮食中汞的对比研究

Comparative Study on the Determination of Mercury in Grain by Atomic Fluorescence Spectrometry and Rapid Mercury Test

通过空白样品加标和质控样品对汞元素的检测,从检出限、稳定性、准确性、加标回收率、检测时间、操作步骤、绿色环保等多个角度对原子荧光法和快速测汞仪直接测定法进行对比。结果表明:2种方法均满足粮食中汞元素的检测要求。与原子荧光光谱法相比,快速测汞仪直接测汞法具有更低的检出限、更强的稳定性和更快的分析速度,其前处理过程简单易操作,且不使用任何化学试剂,对实现检测工作安全、环保、无污染的目标具有重要意义,是值得推广应用的一种检测方法。

Through the blank sample spiking and quality control samples for mercury element detection,the atomic fluorescence method and the direct measurement method of rapid mercury meter is used for comparison.The results show that both methods meet the requirements for the detection of mercury in grain.Compared with atomic fluorescence spectroscopy,the direct mercury method of the rapid mercury meter has lower detection limit,stronger stability and faster analysis speed.Its pretreatment process is simple and easy to operate,and it does not use any chemical reagents.It is of great significance to achieve the goals of safety,environmental protection and pollution-free detection,and is a detection method worthy of promotion and application.