Fig. 4From: Second derivative UV–visible spectroscopy characterizing structural components of dissolved and particulate organic matter in an urbanized riverThe spatial variations of the E2/E3d (a), E2/E3p1 (b) and E2/E3p2 (c), and E2/E4d (d), E2/E4p1 (e) and E2/E4p2 (f) in Baitapuhe RiverBack to article page