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ZDD - [E] Exponentially-Modified Gaussian (EMG)


This is the Zero Distortion Density (ZDD) used in the GenHVL[E] models. This EMG a1 center parameter is the mean of the underlying Gaussian. The a3 parameter in the ZDD nomenclature adjusts the third moment or skew. Here the skew is altered by the width of the convolved exponential in the EMG.

This is also the ZDD used in the GenNLC[E] models. For the GenNLC[E] models, a0, a1, and a3 will be identical. The a2 width or second moment term will reflect a kinetic time constant. Please see the GenHVL and GenNLC equivalence topic for further details.

[E] ZDD

 

ZDD - [E]4.png

a0 = Area

a1 = Center (as mean of underlying Gaussian)

a2 = Width (as SD of underlying Gaussian)

a3 = First Order Kinetic (Exponential) convolution width

v5_ZDD_[E].png

Built-In Peak Model

  EMG (Chromatography, Statistical families)

User-Defined Peaks and View Functions

  EMG(x,area,center,width,e-tau) Exponential Modified Gaussian
  EMG_C(x,amplitude,center,width,e-tau) EMG cumulative
  EMG_CR(x,amplitude,center,width,e-tau) EMG reverse cumulative



c:\1pf\v5 help\home.gif ZDD - [V] ZDD - [G]