Abstract: Objective To study the consistency between the results of inductively coupled plasma atomic emission spectrometry（ICP-OES） and inductively coupled plasma mass spectrometry（ICP-MS） in the determination of aluminum in food. Methods 0.2-0.3 g of a portion of rice flour was weighed and added into 8 mL nitric acid for microwave digestion. After ultrasonic acid removal,the samples were quantitatively transferred into a 25 mL volumetric flask with pure water,and determined by ICP-OES and ICP-MS respectively. The uncertainty of the results of the two methods was evaluated. Results The determination result using ICP-OES was 16.0 mg/kg,and the uncertainty evaluation showed that the result and the expanded uncertainty was （12.1±3.6）mg/kg,k=2. The determination result using ICP-MS was 12.4 mg/kg,and the uncertainty evaluation showed that the result and the expanded uncertainty was （12.4±5.4）mg/kg. The possible distribution range of the results measured by ICP-OES method was 8.5-15.7 mg/kg,and the possible distribution range of the results measured by ICP-MS was 7.0-17.8 mg/kg. The distribution of the results measured by ICP-OES method was completely included in the distribution range of the results measured by ICP-MS method. Conclusion The results of determination of aluminum in food by ICP-OES and ICP-MS are consistent after uncertainty evaluation and recovery correction.

Key words: Inductively coupled plasma atomic emission spectrometry, Inductively coupled plasma mass spectrometry, Aluminum, Uncertainty evaluation, Consistency