A method is described for the determination of copper in palm oil by differential-pulse anodic-stripping voltammetry after dry ashing. Only a few grams of sample are needed and the relative standard deviation is about 3% for oils with copper contents less than 100 p.p.b. (parts per 109).
K. H. Wong, Y. S. Fung and K. W. Fung, Analyst, 1980, 105, 30 DOI: 10.1039/AN9800500030
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