Concentration of Heavy Metals in Virgin, Used, Recovered and Waste Oil: A Spectroscopic Study

As a result of the changes that occur during their use, oil from many machinery products tend to differ in term of physical and chemical composition from virgin oil. The analysis of additive, wear and contaminants element is oil will aid to understand the possible processes that alter the oil compositions. This study examine the heavy metal distribution in virgin, used, waste and recovered oil in term of their additives, contaminants and wear elements using simultaneous analysis of ICP-OES for 23 elements based on ASTM D5185 method. The results demonstrate that there is no significant change for additive element in virgin and used similar virgin oil samples. The metals for contaminants and wear elements in used, waste and recovered oil show indistinct distribution suggest that the oil lubricating, introduction of contamination foreign substances and recovery process play a role in discriminating the oil samples.