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本文采用 HNO_3-HClO_4-H_2O_2溶样,空气一乙炔火焰原子吸收法测定菜油中微量铜。测得市售菜油中含铜量在1.99～2.32μg/g 之间(平均2.14μg/g),加入回收率为99～102%,平均加入回收率为96%.
In this paper, HNO_3-HClO_4-H_2O_2 was used to dissolve the trace copper in vegetable oil by air-acetylene flame atomic absorption spectrometry. The measured copper content in commercially available rapeseed oil ranged from 1.99 to 2.32 μg / g (average 2.14 μg / g). The recovery rate was 99-102% with an average recovery of 96%.