Determination of Aluminum and Boron in Livestock Products by Inductively Coupled Plasma Mass Spectrometry
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Abstract:
A method was established to determination of Aluminum (Al) and Boron (B) in livestock products by inductively coupled plasma mass spectrometry (ICP-MS). After microwave digestion in HNO3 + H2O2 + H2O, the samples were determined directly by ICP-MS. The signal drift and matrix effect can be corrected by selecting Sc and Li as internal standard elements and the influence of mass spectral interference can be calibrated by optimizing the instrument conditions, the good linear relationships, recoveries and precisions were obtained. The calibration curves for Al and B were linear in the range of 0~2.0 μg/mL with correlation coefficients more than 0. 999. The quantization limit of Al and B of the method were 70.5 ng/g and 30.5 ng/g with RSD of 1.35% and 2.01% (n=6), respectively. The mean recoveries of Al and B from five spiked samples (Beef, Pig liver, Pig stomach, beef shutters, Chicken) at the spiking levels of 0.3~3.2 μg/g were ranged from 90.5% to 107.2%. Results showed that the Al and B values detected were in good agreement with the corresponding certified reference values chicken. The proposed method is fast, simple, sensitive and accurate, which can meet the demand for determining Al and B elements in livestock products.
