悬浮液进样火焰原子吸收光谱法测定百合中的锌和锰

Determining Zn and Mn in Lily by Suspension Sample Introduction Flame Atomic Absorption Spectrometry

将处理后的百合研磨成粒度小于0．1mm的粉状物，加入稳定剂琼脂制成悬浮液，用LaCl3消除相关化学干扰，采用标准加入法在同一试液中利用空气-乙炔火焰原子吸收光谱法测定锌和锰元素含量．结果表明，兰州百合中Zn和Mn的含量分别是162．02μg·g^-1、4．95μg·g^-1，且Zn和Mn的加标回收率分别为99．35％～112．60％、92．00％-101．50％．以传统湿法的测定结果为参考对测定值进行t检验，发现两者无显著性差异，说明悬浮液进样法的测定结果准确可靠．

The lily which has been ground into powder- like matter,in the size of less than 0. 1mm in granule. Then, this powder is made into suspension liquid by adding stabilizeragar. After removing relevant chemical disturbation by using LaCl3, we adopt the standard addition method to determine the content of Zn and Mn by using air - acetylene Flame atomic absorption spectrometry in the same sample solution. As a result, the content of Zn and Mn in Lanchow lily is 162.02μg·g^-1 and 4.95 μg·g^-1 respectively. And the recovery of Zn and Mn is between 99.35% - 112.60 % and 92.00 % -101.50 % respectively. The value which has been determined is examined through t - examination, by refering to the outcome of traditional wet method. The outcome has shown that the difference between the two methods is not remarkable. It shows that the result determined by suspension sample introduction is accurate and reliable.