FAAS法测定不同产地油菜花粉中13种金属元素含量  

Determination of the Amount of 13 Metal Elements in the Rape Pollen from Different Regions by Flame Atomic Absorption Spectrophotometry

作　　者：常艳红[1,2] 薛国庆[1] 宋海[1] 邸多隆[3] 

机构地区：[1]河西学院化学系,西部资源环境化学重点实验室,甘肃张掖734000 [2]天水师范学院生命科学与化学学院,甘肃兰州730000 [3]中国科学院兰州化学物理研究所

出　　处：《光谱学与光谱分析》2007年第6期1235-1238,共4页Spectroscopy and Spectral Analysis

基　　金：甘肃省科技攻关项目(2GS035-A43-048-05);甘肃省教育厅项目(0509-03)资助

摘　　要：采用先灰化、再经硝酸-高氯酸(V:V=4:1)常压微沸条件下消化油菜花粉样品,应用火焰原子吸收法测定不同产地油菜花粉中的金属元素K,Na,Ca,Mg,Fe,Co,Ni,Cu,Zn,Mn,Cd,Cr和Pb的含量。研究了测定不同元素的仪器最佳工作条件,并作了方法的准确性和精密度的考察。结果表明:山丹和景泰油菜花粉中K,Na,Ca,Mg,Fe,Cu,Zn和Mn的含量分别为4248·00,75·77,312·10,856·61,599·53,8·78,27·82,22·54μg·g-1和7585·75,242·56,287·88,699·43,1020·65,10·25,40·44,30·97μg·g-1。Co,Ni,Cr,Cd和Pb未检出。加标回收率为95·22%～105·49%,相对标准差(n=9)为0·30%～5·00%。测定方法简单易行,方便快捷。The objective of the present paper was to determine the amount of metal elements in the rape pollen from different regions by flame atomic absorption spectrophotometry （FAAS）. FAAS method was established for the determination of K, Na, Ca, Mg, Fe, Co, Ni, Cu, Zn, Mn, CA, Cr and Pb in the rape pollen. The samples were incinerated and then digested with HNO3-HClO4 （V ： V=4 ： 1） at 90-95℃ and under normal pressure. In the meantime, the optimum parameters of FAAS and the effects of solution medium on the results were studied. The analytical results of K, Na, Ca, Mg, Fe, Cu, Zn and Mn rape pollen from different habitats respectively were 4 248.00, 75.77, 312. 10, 856. 61, 599. 53, 8. 78, 27. 82, 22. 54μg·g^-1 and 7 585. 75, 242. 56, 287. 88,699. 43, 1 020. 65, 10. 25, 40. 44, 30. 97μg·g^-1, while Co, Ni, Cd, Cr and Pb were not checked out in the samples. The results showed that the recovery of standard addition was 95.22%-105.49%, and the RSD（n=9） was 0. 30%-5.00%. The characteristic method is quick, simple and convenient, and the results are satisfactory.

关 键 词：火焰原子吸收法 油菜花粉 金属元素 

分 类 号：O657.3[理学—分析化学]