Journal of Chromatography A 2012 DOI: 10.1016/j.chroma.2012.01.046 View full text
Mahmoud M. Yassine, Ewa Dabek-Zlotorzynska, Valbona Celo

Abstract: The use of urea based selective catalytic reduction (SCR) technology for the reduction of NOx from the exhaust of diesel-powered vehicles has the potential to emit at least six thermal decomposition by-products, ammonia, and unreacted urea from the tailpipe. These compounds may include: biuret, dicyandiamine, cyanuric acid, ammelide, ammeline and melamine. In the present study, a simple, sensitive and reliable hydrophilic interaction liquid chromatography (HILIC)-electrospray ionization (ESI)/mass spectrometry…

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