Table 4.

SEC analysis of the DCM extractable fractions in the sediment samples.

Sample	Retention Time 1 (min)	$$\begin{gathered} {\overline{\mathit{M}}}_{\mathit{n}} \\ (\mathbf{g}·{\mathbf{mol}}^{-1}) \end{gathered}$$	$$\begin{gathered} {\overline{\mathit{M}}}_{\mathit{w}} \\ (\mathbf{g}·{\mathbf{mol}}^{-1}) \end{gathered}$$	PDI 2
MEL1	12.83	35,883	42,245	1.18
	20.41	92	367	4.0
MEL2	12.22	36,855	48,336	1.31
	17.89	254	585	2.30
CAL1	12.71	29,653	46,250	1.56
	17.88	270	529	1.96
CAL2	n.d. 3	n.a. 3	n.a. 3	n.a. 3
	18.04	196	475	2.43

¹ peak value reported here only as an aid for better visualization; ² Polydispersity Index PDI = ${\overline{\mathrm{M}}}_{\mathrm{w}}/{\overline{\mathrm{M}}}_{\mathrm{n}}$; ³ n.d.= not detectable (below the limit of detection, LOD); n.a. = not applicable.