王水消解——原子荧光光谱法测定辣木茶中的汞、砷和硒

Determination of mercury,arsenic and selenium in Moringa tea by atomic fluorescence spectrometry method with the samples dissolved in aqua regia

摘要: 采用王水消解-原子荧光光谱法测定辣木茶中的汞、砷和硒，结果表明：辣木茶中的汞、砷残留量分别为0.0144 mg/kg、0.3270 mg/kg，均符合国家有关茶叶重金属残留的质量安全要求，辣木茶硒含量达0.1350 mg/kg，与茶叶相比属于富硒食物；王水消解-原子荧光光谱法测定辣木茶中的汞、砷和硒，具有精密度高、准确性好、灵敏度高、干扰少、操作简便的优点，是一种切实可行的食品重金属元素检测方法。

Abstract: Mercury,arsenic and selenium in Moringa tea were determined by atomic fluorescence spectrometry method with the samples dissolved in aqua regia.The results show that:The mercury and arsenic residue in Moringa tea were 0.0144 and 0.3270 mg/kg respectively,which conformed to the national quality safety requirements of heavy metal residue in tea.The selenium content in Moringa tea was 0.1350 mg/kg,which belonged to the selenium-rich food compared with tea.The method of mercury,arsenic and selenium determination in Moringa tea by atomic fluorescence spectrometry with the samples dissolved in aqua regia was a kind of feasible methods of heavy metal element in food which showed advantages of high precision,good accuracy,high sensitivity,less interference,and simple operation.