摘要
采用微波消解—原子荧光光谱法,探寻一种检测黑米中汞的简便、准确的方法,优化了仪器的最佳工作条件,最佳载流浓度和还原剂浓度。结果表明:测定汞的检出限为0.001 8 ng/mL,加标回收率为90.2%～110.8%。该方法简单、省时、灵敏度高,适合于黑米中汞含量的测定。
A method for determination of mercury in cereal by microwave digestion-atomic fluorescence spectrometry has been established. Analytical conditions, including main lamp current, cartier gas flow, shield gas flow, and delay/Integration time are optimized. The determination limit of present method is 0.001 8 ng/mL.
出处
《农产品加工（下）》
2012年第9期140-141,149,共3页
Farm Products Processing
基金
陕西省科技研究攻关计划项目(2012K09-25)
关键词
原子荧光光谱法
微波消解
黑米
汞
atomic fluorescence spectrometry
microwave digestion
cereal
mercury
