This method is for determining the concentrations of aluminum(Al), calcium (Ca), chromium (Cr), cobalt (Co), copper (Cu), iron(Fe), lead (Pb), lithium (Li), magnesium (Mg), manganese (Mn),molybdenum (Mo), nickel (Ni), palladium (Pd), phosphorus (P),platinum (Pt), potassium (K), sodium (Na), strontium, (Sr), tin(Sn), titanium (Ti), vanadium (V), and zinc (Zn) in organicmatrices such as crude petroleum, asphalts, vacuum tower bottoms,vacuum gas oils, atmospheric gas oils, diesel and jet fuels andtheir blending components, pyrolysis oils, and fatty acidderivatives by Inductively Coupled Plasma � Optical EmissionSpectrometry (ICP-OES). The lower limits of quantitation for theabove elements, except palladium, are listed in Table 1; seeNote.