Ionic liquids are a gas

Italian scientists have developed an alternative method for measuring fatty acid methyl esters in biodiesel using a room temperature ionic liquid as a chromatographic stationary phase. According to Luigi Mondello and colleagues at the University of Messina and University Campus Biomedico of Rome, the approach is simpler and faster than other techniques and can be applied to blends containing up to 40% esters. The ionic liquid GC stationary phase gave excellent performance in short and long GC columns, its high polarity ensuring complete separation of the target esters.