湿法消解-石墨炉原子吸收光谱法测定玉米油中的铅

Determination of Lead in Corn Oil by Graphite Furnace Atomic Absorption Spectrometry with Wet Digestion

本文采用湿法消解石墨炉原子吸收光谱法测定玉米油中铅含量。玉米油样品以硝酸-高氯酸混合体系为消解液，浸泡5h，再结合石墨炉原子吸收光谱法，分别从灰化温度、原子化温度和基改机选择方面进行条件的优化，从而建立合适的上机方法。其平均相对相差小于1.0%，加标回收率为95.0%～102.0%，结果令人满意。

In this paper, wet digestion determination of lead content in corn oil by graphite furnace atomic absorption spectrometry. Corn oil samples was digested by nitric-perchloric acid, soaked 5 h, combined with graphite furnace atomic absorption spectrometry were optimized conditions from ashing temperature,atomization temperature and GM machine selection, in order to establish appropriate the machine.