测定会理烤烟中铜、锰的含量

Determination of Content of Cu,Mn Trace Elements in Flue-cured Tobacco by Atomic Absorption Spectrometry

采用火焰原子吸收分光光度法,在最优的湿法消解方案(在3∶1的硝酸和双氧水条件下消解24 h)下和最佳的仪器工作条件下,测定烤烟样品(烟叶部分的茎和叶)中Cu、Mn微量元素的含量,并比较凉山烟区中会理种植的云烟87和南江3号品种烤烟中的Cu、Mn的含量。结果表明:云烟87中Mn、Cu微量元素的含量分别为134.6μg·g^(-1)、18.60μg·g^(-1),南江3号中Mn、Cu的含量分别为42.60μg·g^(-1)、32.40μg·g^(-1)。回收率在99.40%~103.1%之间,RSD<1%。

With the optimal absorption spectrophotometry was （tobacco＇s stems and leaves） and in Liangshan tobacco region. The wet digestion method and under the optimum condition of instrument, flame atomic adopted to determine the content of Cu, Mn in the fluecured tobacco samples contrast the content of Cu, Mn of different varieties＇ flue-cured tobacco planted by Huili results showed that the content of Mn and Cu were 134.6 μg·g^-1, 18.60 μg·g^-1 in Clouds 87 and 42. 60μg·g^-1, 32. 40 μg·g^-1 in Nanjiang 3. The recovery was between 99.40% - 103.1%, RSD was lower than 1%.