Aluminium content in milk powders by inductively-coupled argon plasma--optical emission spectrometry
1991
Bloodworth, B.C. | Hock, C.T. | Boon, T.O.
Forty-four brands of milk powders and simulated milk powders were analysed for aluminum content using Inductively Coupled Plasma Spectroscopy (ICP-OES) technique, The samples covered the full range of infant food items available in Singapore-full-cream milk formula, infant formula, fortified infant formula and milk-free soy protein formula. ICP-OES technique was employed for the analysis. Most samples analysed were found to contain less than 1 mg aluminum per kg powder. The highest aluminum content found was 15.0 mg aluminum per kg powder in a milk-free soy protein formula. The study found that ICP-OES is a convenient and accurate technique for trace metal analysis. However, considerable care needs to be exercised in the selection of emission lines of the metal under analysis to avoid error caused by emission from other metal present in the sample.
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