微波消解试样-火焰原子吸收光谱法测定中药八月札中5种金属元素

FAAS Determination of 5 Metal Elements in a Traditional Chinese Medicine“Ba-yue-zha” with Microwave Assisted Sample Digestion

摘要: 于PTFE消解罐中用浓硝酸于微波炉中消解八月札试样,所得试样的稀硝酸溶液用于火焰原子吸收光谱法测定其中的铁、铜、锌、锰、钙的含量.5种金属元素的回收率在90.0%~102.6%之间,测定值的相对标准偏差(n=5)为0.47%~2.19%之间.

Abstract: Sample of a traditional Chinese medicine,named in transliteration “Ba-yue-zha” was digested with conc.HNO3 in a PTFE digestion vessel heated in a microwave oven.The sample solution in dil.HNO3 was used for FAAS determination of Fe,Cu,Zn,Mn and Ca under prescribed working conditions of the instrument.Using a sample of “Ba-yue-zha” as matrix,tests for precision and recovery were made,giving values of RSD′s (n=5) in the range of 0.47%-2.19% and values of recovery in the range of 90.0%-102.6%.