Determination of Traces of Metals in Finnish Margarines by the Flameless Atomic Absorption Spectrophotometry Method

✍ Scribed by Pihlaja, H.

• Publisher: John Wiley and Sons
• Year: 1981
• Weight: 290 KB
• Volume: 83
• Category: Article
• ISSN: 0931-5985
• DOI: 10.1002/lipi.19810830804

✦ Synopsis

Abstract

The metal content (Cu, Fe, Ni, Pb) of Finnish margarines manufactured in 1978‐80 were investigated by the flameless atomic absorption spectrophotometry method. Copper, iron and nickel were digested by the dry ashing method whereas for lead both dry ashing and wet ashing were employed. The addition method was used in the AAS analysis and the metal amounts were calculated from the total weight of margarine. The copper content was found to vary 0.25‐0.35 ppm and iron 0.28‐0.43 ppm except for one group of margarines which contained 2 ppm of iron. The largest nickel content (0.38 ppm) was found in margarines prepared by catalytic hydrogenation. while other margarines contained less than 0.2 ppm of nickel, The lead amount was less than 0.1 ppm except for one sample (0.28 ppm).