Answer Posted / g.venkata suresh
Peak purity is nothing but purity angel should be less than purity threshould
Purity angel is a measure of the spectrul hetrogeneity of the peak based on the spectrum overall the peak using spectrum constract angel.
Spectral constract angel is defined as the shape difference between two spectra.
Purity threshould is a minimum purity of the reference standard in the formulation.
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