氢化物原子荧光法测定生姜中的硒

目的:探讨原子荧光光度计测量生姜中硒含量的可行性.方法:采用自动进样器,用氢化物原子荧光法测定普通生姜和富硒生姜中的硒含量.结果:普通生姜中硒含量平均为0.50×10-2mg/kg,而富硒生姜中硒的平均含量可达到1.16×10-2mg/kg；线性范围0～10 μg/L,检出限为0.019 μg/L,精密度为1.2％,回...

Determination of Selenium in Ginger with Hydride Atomic Fluorescence Spectrometry

Objective： To study the feasibility of detecting selenium contents in ginger with atomic fluorescence spectrometer.Methods： Selenium contents in common ginger and ginger with selenium-rich were tested with atomic fluorescence spectrometer using automatic sampler in optimum conditions and compared.Results： The average selenium contents in ordinary ginger and selenium-rich ginger were 0.50×10-2mg/kg and 1.16×10-2 mg/kg respectively.Linear range was 0～10 μg/L,detection limit was 0.019 μg/L,precision and recovery ratio were 1.2% and 95.3%～100.7% respectively.Conclusions： The method is simple,effective,accurate,sensitive and cheap.Furthermore,it needs small amount of sample and has wide linear range and broad applicability.