摘要
对市售的大米进行干法灰化处理,利用火焰原子吸收分光光度法对其中5种微量元素进行检测和分析。检测结果表明:该法方法简便、快速、灵敏度高、精密度好,相关系数(r)均在0.9758～0.9999之间。所测大米中铁和铜的含量高,不含铅。Cu、Fe、Zn、Cd的含量分别为4.77～13.18 mg/kg、15.69～182.15 mg/kg、24.05～29.75 mg/kg、0～0.42 mg/kg。
Five kinds of microelements in rice from market were determined and analyzed by flame atomic absorption spectrophotometry which were treated by cineration. The method presented was found to be rapid, precise and accurate. The related confficients were 0. 9758 - 0. 9999. The result showed that the content of Fe and Cu were higher, without Pb. The contents of Cu, Fe, Zn, Cd were 4. 0. 42 mg/kg, resoectivelv. The orooosed 77 - 13. 18 mg/kg, 15.69 - 182. 15 method applied to the analvsis of rice mg/kg, 24.05 - 29. 75 mg/kg, and 0 - was satisfactory
出处
《广州化工》
CAS
2013年第4期146-150,160,共6页
GuangZhou Chemical Industry
关键词
火焰原子吸收
大米
微量元素
flame atomic absorption
rice
microelements
