火焰原子吸收光谱法测定不同产地人参果中11种微量元素含量  

Determination of the amount of 11 metal elements in the Solanum muricatum from different regions by flame atomic absorption spectrophotometry

作　　者：任雪峰[1,2] 巩维忠[1] 吴冬青[2] 杨晓光[2] 杨正银[1] 

机构地区：[1]兰州大学化学化工学院,兰州730000 [2]河西学院化学系,甘肃张掖734000

出　　处：《兰州大学学报（自然科学版）》2009年第3期73-76,共4页Journal of Lanzhou University(Natural Sciences)

基　　金：国家自然科学基金项目(20475023);甘肃省教育厅科研资助项目(0509-02)

摘　　要：实验在常压微沸(90～95℃)条件下采用V(硝酸):V(高氯酸)=4:1消化,应用火焰原子吸收光谱法测定不同产地人参果中金属元素Na,Ca,Mg,Mn,Cu,K,Zn,Fe,Cr,Cd和Pb的含量。研究了测定不同元素时仪器的最佳工作条件,并作了方法的准确性和精密度的考察,加标回收率为97.26%～104.82%,相对标准偏差(n=9)为0.10%～5.15%。测定方法简单易行,结果可靠。A flame atomic absorption spectrophotometry method was established for the determination of Na, Ca, Mg, Mn, Cu, K, Zn, Fe, Cr, Cd and Pb in the Solanura muricatum from different regions. The samples were incinerated and then digested with V（HNO3） ： V（HClO4）=4 ： 1 at 90-95℃ and under normal pressure. In the meantime, the optimum parameters of flame atomic absorption spectrophotometry and effects of solution medium on the results were studied. The results show that recovery of standard addition is 97.26%-104.82%, and the RSD（n=9） is 0.10%-5.15%. The characteristic method is quick, simple and convenient and the results are satisfactory.

关 键 词：火焰原子吸收光谱法 人参果 金属元素 

分 类 号：O657.3[理学—分析化学]