This application note describes the technique for determining metals in oil samples using ICP-OES.
The document details an analytical procedure for determining twelve specific metals (Nickel, Barium, Silicon, Iron, Chromium, Magnesium, Vanadium, Sodium, Aluminium, Calcium, Zinc, and Lead) in various petroleum products. The study utilized the Agilent Liberty 200 ICP-OES instrument with a Compaq 386/20e computer for control.
Samples were prepared using a simple weight-volume dilution method with deodorized kerosene as the solvent, resulting in a 1:10 dilution ratio. The analysis employed manual sample introduction, dynamic background correction, and optimized viewing heights to ensure accurate results despite potential spectral interferences from hydrocarbon matrices.
The study analyzed each sample in triplicate.
The Liberty could analyze the 12 metals with 3 replicates in approximately 6 minutes 30 seconds.
A 3 minute rinse was used for the fuel oil samples.