摘要
采用火焰原子吸收光谱法测定了玉竹和泽泻中钙、锌、铁、锰、铜、钾的含量。样品经硝酸-高氯酸(4+1)混合酸消化,选择波长422.7,213.9,279.5,324.8,766.5,296.7 nm 6条谱线依次作为测定钙、锌、锰、铜、钾和铁的分析线。6种元素的质量浓度在一定的范围内均与其峰面积呈线性关系。该法用于玉竹和泽泻样品分析,两种样品中6种元素测定值的相对标准偏差(n=7)均小于2.5%,回收率在96.2%～105.8%之间。
Contents of six trace elements,including Ca,Zn,Fe,Mn,Cu and K in rhizoma polygonati officinalis and rhizoma alismatis were determined by FAAS.The samples were digested with a mixed solution of HNO_3 and HClO_4（4＋1 by vol.）,and the wavelengths of 422.7,213.9,279.5,324.8,766.5 and 296.7 nm were selected as analytical lines for determination of the 6 elements respectively.Linear relationships of values of peak area and mass concentration of the 6 elements were obtained in definite ranges.The proposed method was used in the analysis of samples of rhizoma polygonati officinalis and rhizoma alismatis,giving values of RSD＇s（n= 7） less than 2.5%and recovery in the range of 96.2%-105.8%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2010年第4期396-397,400,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
吉林省教育厅"十一五"科学技术研究项目(No.2007170)
关键词
火焰原子吸收光谱法
玉竹
泽泻
微量元素
FAAS
Rhizoma polygonati of ficinalis
Rhizoma alismatis
Trace elements
