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Journal of Shanghai University（Natural Science Edition）

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Determination of High Calcium Content in Milk Powder Using Incomplete DigestionFlame AAS Method

XU Yin-juan1,ZHANG Lan-man2,YUAN Hui-juan1,TANG Wei-li1   

  1. 1. School of Sciences, Shanghai University, Shanghai 200444, China;
    2. Nanhui Environmental Monitoring Station of Shanghai, Shanghai 201300, China
  • Received:2005-05-10 Revised:1900-01-01 Online:1900-01-01 Published:1900-01-01
  • Contact: XU Yin-juan1

Abstract:

A method of incomplete digestion with flame atomic absorption spectrometry (FAAS) for the determination of high calcium content in milk powder is reported. The sample milk powder was incompletely digested with HNO 3H 2 O 2 in a pressurized vessel. Emulsifier OP-10 and releasing agent lanthanum were added for FAAS determination of calcium. Parameters were optimized. Recovery of the method was in the range of 101%～104% with RSD 0.29%.

Key words: calcium, incomplete digestion, milk power, FAAS