Answer Posted / dgv krishna
PDA MEANS PHOTO DIODE ARRAY DETECTOR WHICH IS USED TO FIND
THE RETENTION TIME OF THE PEAK AT MULTIPLE WAVELENTH i.e at
DIFFERENT NANOMETERS IN HPLC INSTRUMENT.FOR EXAMPLE CAFFINE
WAVELENTH CAN BE DETECT AT 205, 243, 273 nm AT A TIME BY
PDA DETECTOR BY HPLC
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