Table S2. Analytical methods used for the laboratory analysis of the physico-chemical characterization of sediments. Adapted from Johnston et al. (2014) and Skilton et al. (2015). Method Detection Analyte Method description number 0.04 g/100 g APHA 2540 G Ignition in muffle furnace 550 dry wt Organic content (AFDW) 22nd ed. 2012. °C, 6 hr, gravimetric. 0.010 PSP 2002 Dried sample, <2 mm fraction. 0.010 - 0.4 mod./APHA metals, trace Nitric/Hydrochloric acid mg/kg dry metals by As,Cd,Cr,Cu,Ni,Pb,Zn,Hg digestion, ICP-MS, trace level w Dried sample, sieved as PSP 2002 specified (if required). 1, 5, 9 mod./APHA 0.02 mg/kg Nitric/Hydrochloric acid Total Recoverable Barium metals by dry wt 40 digestion, ICP-MS, trace level. US EPA 200.2. Dried sample, sieved as PSP 2002 specified (if required). 1, 5, 9 mod./APHA 40 mg/kg Total Recoverable Iron Nitric/Hydrochloric acid metals by dry wt 1.0 Total digestion, ICP-MS, screen level. USEPA 200.2 Dried sample, sieved as PSP 2002 specified (if required). 1, 5, 9 mod./APHA 1.0 mg/kg Total Recoverable Nitric/Hydrochloric acid metals by dry wt Manganese digestion, ICP-MS, screen level. USEPA 200.2 Sonication extraction, SPE (solid phase extraction) cleanup, 0.002 - GC-MS SIM (gas 0.010 Polycyclic Aromatic ESEPA 8270C chromatography-mass mg/kg dry Hydrocarbons spectroscopy selective ion wt monitoring) analysis. US EPA 8015B/MfE Sonication extraction, Silica 8 - 70 Total Petroleum Petroleum cleanup, GC-FID (flame mg/kg dry Hydrocarbons Industry ionising detection) analysis . wt Guidelines.
Table S2. Analytical methods used for the laboratory analysis of the physico-chemical characterization of sediments. Adapted from Johnston et al. (2014) and Skilton et al. (2015). Analyte Method number Method description Detection Organic content (AFDW) APHA 2540 G 22nd ed. 2012. Ignition in muffle furnace 550 °C, 6 hr, gravimetric. 0.04 g/100 g dry wt 0.010 metals, trace As,Cd,Cr,Cu,Ni,Pb,Zn,Hg PSP 2002 mod./APHA metals by Dried sample, <2 mm fraction. Nitric/Hydrochloric acid digestion, ICP-MS, trace level 0.010 - 0.4 mg/kg dry w Total Recoverable Barium PSP 2002 mod./APHA metals by Dried sample, sieved as specified (if required). 1, 5, 9 Nitric/Hydrochloric acid digestion, ICP-MS, trace level. US EPA 200.2. 0.02 mg/kg dry wt 40 Total Recoverable Iron Total PSP 2002 mod./APHA metals by Dried sample, sieved as specified (if required). 1, 5, 9 Nitric/Hydrochloric acid digestion, ICP-MS, screen level. USEPA 200.2 40 mg/kg dry wt 1.0 Total Recoverable Manganese PSP 2002 mod./APHA metals by Dried sample, sieved as specified (if required). 1, 5, 9 Nitric/Hydrochloric acid digestion, ICP-MS, screen level. USEPA 200.2 1.0 mg/kg dry wt Polycyclic Aromatic Hydrocarbons ESEPA 8270C Sonication extraction, SPE (solid phase extraction) cleanup, GC-MS SIM (gas chromatography-mass spectroscopy selective ion monitoring) analysis. 0.002 - 0.010 mg/kg dry wt Total Petroleum Hydrocarbons US EPA 8015B/MfE Petroleum Industry Guidelines. Sonication extraction, Silica cleanup, GC-FID (flame ionising detection) analysis . 8 - 70 mg/kg dry wt
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