密封压力消解-火焰原子吸收光谱法测定雪莲果中微量元素  

FAAS Determination of Trace Elements in Smallanthus Sonchifolius with Sample Digestion Under Pressure

作　　者：吴育廉[1] 杨捷[1] 蔡全辉[2] 汪俊权[2] 

机构地区：[1]广东海洋大学实验教学部生化中心,湛江524088 [2]广东海洋大学食品科技学院,湛江524088

出　　处：《理化检验（化学分册）》2011年第10期1216-1217,1228,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：雪莲果样品于130℃经密闭压力消解罐消解2h,采用火焰原子吸收光谱法测定其中钙、镁、铁、锰、铜、锌等6种微量元素的含量。选择422.7,285.2,248.3,279.6,324.8,213.9nm谱线依次作为测定钙、镁、铁、锰、铜和锌的分析线。各元素的质量浓度与其吸光度均在一定的范围内呈线性关系,检出限(3s)依次为9.49,9.49,1.06,2.59,0.539,3.58μg.L-1。方法用于苹果标准物质(GBW 10019)的分析,测定结果与认定值相吻合。The sample of Smallanthus sonchifolius was digested at 130 ℃ for 2 h in a closed vessel under pressure, and contents of Ca, Mg, Fe, Mn, Cu and Zn in the sample solution were determined by FAAS. The spectral lines with wavelengths of 422. 7, 285. 2, 248. 3, 279. 6, 324. 8, 213. 9 nm were selected as analytical spectral lines for the determination of Ca, Mg, Fe, Mn, Cu and Zn respectively. Linear relationships between values of absorbance and mass concentration of the 6 elements were obtained in definite ranges, with detection limits （3s） of 9.49, 9. 49, 1.06, 2. 59, 0. 539, 3. 58 μg · L^-1 for Ca, Mg, Fe, Mn, Cu and Zn respectively. The proposed method was applied to the analysis of the CRM （GBW 10019） of apple, the results obtained was in conformity with the certified values.

关 键 词：高压密封消解 火焰原子吸收光谱法 雪莲果 微量元素 

分 类 号：O657.31[理学—分析化学]