Rapid atomic spectrometric determination of sodium, potassium, calcium and magnesium in powdered milk by direct dispersion
- 1 January 1986
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 111 (12) , 1375-1377
- https://doi.org/10.1039/an9861101375
Abstract
A method for the determination of Na, K, Ca and Mg in powdered baby milk formulas is proposed. The procedure consists in weighing 0.1 g of milk, adding 10 ml of a solution of lanthanum (4%m/V) and dispersing the mixture in water to give a volume of 100 ml. The samples are then directly introduced into an air-acetylene flame and Na, Ca and Mg are determined by atomic absorption spectrometry using multi-element standards containing La. K is determined by atomic emission spectrometry.Keywords
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