Determination of Trace Elements in Bee Hole Orange by Flame Atomic Absorption Spectrometry

[Objective] The aim of the research was to determine contents of trace elements in bee hole orange in Shiping county of Yunnan Province to provide references for further development and utilization of orange resources in Shiping county. [Method] The samples were treated by dry-ashing method, the contents of 10 trace elements as Zn, Mn, Cu, Ni, Fe,Cr,Cd, Co,Pb and Hg in pulp, seed and pericarp of bee hole orange were determined by flame atomic absorption spectrometry. And relative standard deviation and recovery rate of this method were determined by precision test and recovery test . [Result] Except some undetected elements, contents of each trace elements in pulp of bee role orange were as follows: FeCuMnPbNiCr, those in seed were HgFeCuPbZnMnNiCrCo, those in pericarp were Hg FeCuPbMnNiCrCo. RSD value and recovery rate in atomic absorption spectrometry were 0.22 %～4.8 % and 101.0 %～114.4 %, respectively, which had good accuracy and the same sample treatment liquid could determine the contents of multiple trace elements continuously. [Conclusion] Pericarp, seed and pulp of orange had high Fe and Cu contents of the essential elements in human body, low content of poisonous elements and had higher edible and medical values.