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Determination of traces of heavy metals in oils and fats by arc spectrography

Research paper by F. M. Farhan, H. Pazandeh

Indexed on: 01 May '76Published on: 01 May '76Published in: Journal of the American Oil Chemists' Society



Abstract

A new and simple method is described for direct and simultaneous determination of traces in fats and oils of iron, copper, nickel, lead, silver, aluminum, magnesium, calcium and manganese. Graphite powder is used as spectroscopic buffer and for preparation of standard powders. Using necked cupped carbon electrode and cone shaped counter electrode, a steady DC arc discharge is obtained with graphite matrix. A quartz spectrograph of high resolving power is used for this determination.