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Table 1 The peak range of the functional group

From: Preparation and characterization of liquefied eggplant branch bio-based controlled-release fertilizer

Group

–OH

C=C

C–O–C

C–O

βN–H

Wavenumber (cm−1)

3500 to 3200

1675 to 1638

1270 to 1230

1150 to 1085

1640 to 1530