Simulation of chromatographic peaks by simple functions

The quality of bigaussian (BG) and gaussian-lorentzian (GL) simulations of theoretical exponentially modified gaussian (EMG) chromatographic peaks is compared over a range of relaxation time/standard deviation ratios. The GL simulation has superior features above a ratio of about two. A further comparison is made of “best fit” BG, GL and EMG peaks to experimental points for selected gas chromatographic peak types.