Determination of Aluminum in Flour Products by ICP-MS

Objectives To establish a method for the determination of aluminum in flour food by inductively coupled plasma mass spectrometry (ICP-MS), to explore the main sources of interference, and monitor the concentration of aluminum in flour food.

Methods After microwave digestion, the samples were detected for the content of aluminum by ICP/MS in the condition of ⁴⁵Sc as the internal standard for eliminating matrix effect.

Results The detection limit of aluminum was 0.03 mg/kg. Recovery rates of spiked samples range from 92.0% to 106.0%, and RSD was 2.15%~3.45%.

Conclusions This method has low detection limit, broad linear range with simple operation and quick analysis. It can be used for determining aluminum in flour food.