Answer Posted / omkar sherikar
PDA Detector covers whole range of 200 - 800 nm of spectrum
as it contains both UV as well as Visible light source.
we can scan or we can get spectra of analyte in whole UV-
Visible range, so that we can check the response of analyte
at different wavelengths.
Further, it also give us idea about peak purity and whether
there is any co-eluting peak with the analyte peak.
It scans the chromatogram at front, top and tail and checks
it is single pure peak or not. PDA is very helpful in
impurity analysis and forced degradation studies.
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