Residual fuels. Crude oil (HS 150810), Crude oil (HS 151110), Crude oil (HS 151211), Crude oil (HS 151311), Crude oil (HS 151321), Crude oil (HS 151521). Crude petroleum (ICS 75.040).

DUS 1872:2017, Standard Test Method for Determination of Nickel, Vanadium and Iron in Crude Oils and Residual Fuels by Inductively Coupled Plasma (ICP) Atomic Emission Spectrometry. (16 page(s), in English)

This draft test methods cover the determination of nickel, vanadium, and iron in crude oils and residual fuels by inductively coupled plasma (ICP) atomic emission spectrometry. Two different test methods are presented. Test Method A ICP is used to analyze a sample dissolved in an organic solvent. This test method uses oil-soluble metals for calibration and does not purport to quantitatively determine or detect insoluble particulates. Test Method B ICP is used to analyze a sample that is decomposed with acid.