Five samples each of yogurts and human milk were separately collected, deproteinized, pre-concentrated differently with 1% 8-hydroxyquinoline, 1% ammonium pyrrolidine-dithiocarbamate (APDC) and extracted with methyl-isobutylketone (MIBK). Activated carbon powder in HNO 3 was also used. The extracts obtained were analyzed using atomic absorption spectrometry for some metal ions. In yogurts, the powdered activated carbon in HNO 3 exhibited the highest complexing ability with values of 0.
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