Keywords:
Calcium, Chemical analysis and testing, Content, Copper, Determination, Determination of content, Diesel fuels, Emission spectrophotometry, ICP, Inductively Coupled Plasma, Liquid, Materials testing, Measurement, Measuring techniques, Nickel content, OES, Optical Emission Spectroscopy, Petroleum products, Phosphorus, Potassium, Sampling methods, Sodium, Spectroscopy, Zinc