Abstract：The effects of different sample digestives for the flowers of hylocereus undatus are compared. Eight trace elements in the flowers of hylocereus undatus were determined by flame atomic absorption spectrophotometer. The result shows that the RSD and recovery are better if the flowers of hylocereus undatus was digested with HNO3-HClO4(5∶1) mixed acid, and the flowers of hylocereus undatus contains many essential elements among which the contents of Fe, Mn and Zn are higher than those of Ni and Cu. Co and Cd were not determined, but Pb was determined. The experimental results showed that the detection limits were all smaller than 0.086 μg·mL-1, the RSDs (n=8) all smaller than 8.37%, and the addition standard recovery(ASR)(n=8) was 79.69%-118.6% for all elements.
Key words：Flame atomic absorption;Flowers of hylocereus undatus;Trace elements
王新平. 火焰原子吸收光谱法测定中草药剑花中的8种微量元素[J]. 光谱学与光谱分析, 2005, 25(02): 293-295.
WANG Xin-ping. Determination of Eight Trace Elements in the Flowers of Hylocereus Undatus by FAAS. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(02): 293-295.
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