Table 1 Organic carbon content (OC), concentrations and stable isotope data of Hg together with the estimated contribution of different sources (urban (Urb), industrial (Ind), global precipitation (Glob)) with the estimated uncertainty in deep-sea sediments in Mediterranean and Adriatic Sea
Site ID | Core depth | Hg | OC | δ199Hg | δ200Hg | δ201Hg | δ202Hg | Δ199Hg | Δ200Hg | Δ201Hg | Δ199Hg/Δ201Hg | Urb | Ind | Glob |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
cm | ng g−1 | wt.% | ‰ | ‰ | ‰ | ‰ | ‰ | ‰ | ‰ | % | % | % | ||
Ionian Sea MS1 | 0–1 | 41.7 | 0.37 | −0.24 | −0.58 | −0.97 | −1.28 | 0.09 | 0.07 | 0.00 | 0.00 | 32 (±14) | 41 (±24) | 27 (±22) |
1–5 | 50.4 | 0.27 | −0.33 | −0.75 | −1.23 | −1.62 | 0.08 | 0.06 | −0.02 | −4.45 | — | — | — | |
>5 | 66.7 | 0.48 | −0.44 | −1.04 | −1.59 | −2.18 | 0.11 | 0.05 | 0.05 | 2.00 | — | — | — | |
Levantine Sea MS2 | 0–1 | 14.9 | 0.27 | −0.18 | −0.51 | −0.82 | −1.15 | 0.11 | 0.07 | 0.05 | 2.31 | 25 (±14) | 43 (±25) | 32 (±32) |
1–2 | 27.7 | 0.23 | −0.21 | −0.56 | −0.84 | −1.13 | 0.08 | 0.01 | 0.02 | 4.61 | — | — | — | |
2–3 | 28.7 | 0.17 | −0.18 | −0.49 | −0.84 | −1.01 | 0.07 | 0.02 | −0.08 | −0.87 | — | — | — | |
>3 | 23.2 | 0.17 | −0.20 | −0.53 | −0.78 | −1.07 | 0.07 | 0.01 | 0.03 | 2.66 | — | — | — | |
Strait of Otranto MS3 | 0–1 | 153 | 0.59 | −0.49 | −1.13 | −1.66 | −2.30 | 0.09 | 0.03 | 0.08 | 1.23 | 88 (±6) | 2 (±5) | 10 (±7) |
1−5 | 48.3 | 0.47 | −0.30 | −0.74 | −1.04 | −1.51 | 0.08 | 0.02 | 0.09 | 0.85 | — | — | — | |
5–7 | 46.3 | 0.74 | −0.32 | −0.85 | −1.24 | −1.68 | 0.10 | −0.01 | 0.02 | 4.59 | — | — | — | |
7–10 | 51.6 | 0.52 | −0.43 | −1.04 | −1.56 | −2.13 | 0.11 | 0.03 | 0.03 | 3.14 | — | — | — | |
>10 | 44.1 | 0.67 | −0.41 | −1.10 | −1.68 | −2.24 | 0.15 | 0.03 | 0.00 | 0.00 | — | — | — | |
Algerian Sea MS4 | 0–1 | 153 | 0.63 | −0.25 | −0.50 | −0.80 | −0.95 | 0.03 | 0.05 | 0.03 | 0.98 | 19 (±15) | 62 (±23) | 19 (±23) |
1–4 | 84.5 | 0.89 | −0.24 | −0.61 | −0.92 | −1.33 | 0.10 | 0.05 | 0.08 | 1.16 | — | — | — | |
4–8 | 144 | 0.44 | −0.23 | −0.53 | −0.82 | −1.16 | 0.06 | 0.05 | 0.06 | 1.07 | — | — | — | |
>8 | 67.6 | 1.03 | −0.29 | −0.67 | −1.01 | −1.35 | 0.05 | 0.00 | 0.01 | 8.75 | — | — | — | |
Alboran Sea MS5 | 0–1 | 115 | 0.86 | −0.17 | −0.55 | −0.89 | −1.22 | 0.13 | 0.06 | 0.03 | 4.24 | 29 (±14) | 36 (±24) | 35 (±24) |
1–4 | 92.0 | 1.00 | −0.48 | −1.11 | −1.72 | −2.28 | 0.10 | 0.03 | −0.01 | −11.08 | — | — | — | |
4–8 | 82.3 | 0.77 | −0.43 | −1.09 | −1.66 | −2.23 | 0.14 | 0.03 | 0.02 | 6.84 | — | — | — | |
>8 | 55.3 | 0.79 | −0.43 | −1.03 | −1.55 | −2.12 | 0.11 | 0.03 | 0.04 | 2.78 | — | — | — | |
Western basin MS6 | 0–1 | 98.6 | 0.55 | −0.08 | −0.39 | −0.52 | −0.78 | 0.11 | 0.00 | 0.06 | 1.77 | 10 (±11) | 53 (±26) | 37 (±27) |
1–4 | 65.1 | 0.33 | −0.12 | −0.38 | −0.60 | −0.82 | 0.09 | 0.03 | 0.02 | 4.65 | — | — | — | |
4–8 | 60.6 | 0.29 | −0.19 | −0.55 | −0.83 | −1.16 | 0.11 | 0.03 | 0.05 | 2.33 | — | — | — | |
>8 | 34.7 | 0.99 | −0.22 | −0.59 | −0.94 | −1.20 | 0.08 | 0.02 | −0.03 | −2.66 | — | — | — | |
Adriatic sites | ||||||||||||||
AS1 | 0–1 | 41.7 | 0.35 | −0.32 | −0.87 | −1.36 | −1.88 | 0.15 | 0.08 | 0.05 | 3.08 | 65 (±9) | 8 (±13) | 27 (±13) |
AS2 | 0–1 | 45.6 | 0.41 | −0.11 | −0.37 | −0.60 | −0.85 | 0.10 | 0.06 | 0.04 | 2.82 | 13 (±12) | 53 (±24) | 25 (±24) |
AS3 | 0–1 | 65.6 | 0.55 | −0.20 | −0.51 | −0.77 | −1.07 | 0.07 | 0.03 | 0.03 | 2.15 | 22 (±15) | 53 (±24) | 25 (±24) |
AS4 | 0–1 | 46.4 | 0.38 | −0.32 | −0.77 | −1.14 | −1.61 | 0.09 | 0.04 | 0.07 | 1.20 | 51 (±12) | 25 (±20) | 24 (±18) |
