利用微波消解技术处理样品，用塞曼石墨炉原子吸收法测定了大米中的镍，该方法具有简便、快速、结果准确可靠的优点。测定结果表明：镍的浓度在0～25μg/L范围线性良好，相关系数0．9991，镍的加标回收率为97．3％～104．2％；测定结果的相对标准偏差为1．9％，检出限为0．152μg/L。%This article adopts microwave digestion technology to process the sample and uses graphite furnace atomic absorption spectrometry to determine the trace Nickel in rice .The proposed method is proved to be rapid ,simple and accurate .The test results show that the linear range of Nickel is 0-25μg/L with a correlation coefficient of 0 .9991 . T he adding standard recovery is in the range of 97 .3% - 104 .2% , the RSD is 1 .9 ﹪ , and detection limit is 0 .152μg/L .
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