Confirmation of heavy metal ions in used lubricating oil from a passenger car using chelating self-assembled monolayer

In order to prevent engine failure, the oil must be changed before it loses its protective properties. It is necessary to monitor the actual physical and chemical condition of the oil to reliably determine the optimum oil-change interval. Our study focuses on the condition of the lubricating oil in an operated car engine. Shear stress curves and viscosity curves as a function of the shear rate for fresh and used lubricating oil were examined. Metal nitrate was detected in the lubricating oil from the operated car engine through the use of a chelating self-assembled monolayer.

Graphical abstractThis article focuses on trace of metal ions in used lubricating oil from a passenger car by chelating self-assembled monolayer fabricated on the surface of the silicon wafer.Figure optionsDownload full-size imageDownload as PowerPoint slide