Antioxidants

Antioxidants, which are applied in lubricants, are easily detected by AP/MALDI in combination with ion trap mass spectrometry.

The antioxidants found in many lubricants prevent or slow the oxidation process in metals, such as iron, stainless steel and copper.

Common antioxidants in lubricants, which can be detected by AP/MALDI, include both phenolic compounds and aromatic amines. These antioxidants range in molecular mass from 200-1100Da. The advantage of using AP/MALDI is to be able to analyze antioxidants as a thin solid layer on metallic surfaces. MassTech’s gold-covered stainless steel MALDI target plates provide the best antioxidants mass spectra.     

Relevant References:

Electrospray ionization and atmospheric pressure matrix-assisted laser desorption/ionization mass spectrometry of antioxidants applied in lubricants

Alexander Kassler^1,2, Ernst Pittenauer¹, Nicole Doerr² and Guenter Allmaier¹

¹ Vienna University of Technology, Institute of Chemical Technologies and Analytics,
   Vienna, Austria
² Austrian Center of Competence for Tribology, Wr. Neustadt, Austria
   Rapid Commun. Mass Spectrom. 2009; 23: 3917-3927