关键词: 初榨橄榄油, 原子吸收光谱法, 无机元素, 相关性分析, 主成分分析

Abstract: Flame atomic absorption spectrometry was utilized to determine the Ca,Fe,Mg,Mn,Cu,Zn and K contents,and graphite furnace atomic absorption spectrometry was utilized to determine the Pb,Cd and Cr contents in virgin olive oils from eight introduced varieties olive planting in Liangshan prefecture,respectively.The correlation and principal component of these inorganic elements were analyzed.The results showed that a significant difference was observed among the 10 kinds of inorganic elements,and the elements contents were in the following order:Ca> K>Zn>Mg>Fe>Mn>Cu>Pb>Cr >Cd.Moreover,harmful elements of Pb,Cr and Cd contents were far bellowing 0.100 μg/g,suggested that the soil in this area was not polluted by heavy metals and suited to establish standardized cultivation bases for olive.In addition,there was a correlation between some elements,and the quality of Chenggu 32 virgin olive oil was the best.Overall,the results of this experiment could provide reference for the quality evaluation of olive oil.

Key words: virgin olive oil, atomic absorption spectrometry, inorganic element, correlation analysis, principal component analysis