Determination of Aluminium in Pasta Products by ICP-AES

[Objective]To establish a determination method of aluminium in pasta products by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-AES).[Methods]The dry ashing samples in acidic environment were dissolved or digested with microwave-liquid phase method,then the solution at constant volume was prepared. The aluminium content of samples was determined with ICP-AES.[Results]The lowest detection limit was 0.020 μg/ml;the quantitative limit of the method was 0.1 μg/ml; the lowest detection concentration of the sample was 2.5mg/kg; linear relation showed in the range of 0.2～50.0 μg/ml,the Correlation Coefficient r=0.9998; the relative standard deviation of test result was 1.3%,when the recovery ranged from 96 -102.5%.[Conclusion]For the characteristics of simple,quick,rapid,accurate,with small interference and lower detection limit,this method applies to determining aluminum content in pasta products.