Aluminum food lakes are oil dispersible colorants manufactured by combining food dyes with alumina. Alumina absorbs the water-soluble colors and acts as a carrier vehicle for the dye. Aluminum consumption is a potential food safety concern. For example, the European Food Safety Authority (EFSA), in its opinion of 22 May 2008 (2) recommended lowering the tolerable weekly intake (TWI) for aluminum to 1 mg/kg body weight/week. Therefore quantification of aluminum in food dyes provides a way to monitor the potential for human intake. This note describes the measurement of Aluminum in food lakes by XRF using the fused bead method.
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