Fourier tranform infrared (FTIR) spectroscopy is a reliable technique ... comprising a blend of five ppm COS, 10 ppm benzene, and 75 ppm of propane in nitrogen balance. This mixture is used ...

A Fourier transform spectrometer is used in FTIR fuel analysis to record a spectrum of the fuel under study in the mid-infrared spectrum ... DENS7777 and DENS4052. eraspec can measure density, benzene ...