... ng/m 3 10–100 4, 6–9Oceans ( 13. 3–45.4) 1.0 3. 0 ng/m 3 800–2000 5, 10Anthropogenic (33 .3 59.1) 10.0–900.0 kg/yearc2000–2600 5, 10, 11aThe estimated total amount of mercury contributed to the ... 12Seawater:Japan:Total mercury 3. 2–12.5 12Methylmercury 0.2–1.0 12United States, New YorkTotal mercury 47.0–78.0 12Methylmercury 25.0 33 .0 12Sediment interstitial water:Total mercury 100.0–600.0 ... Tarras-Wahlberg et al., 2000; 29, Takizawa, 1995; 30 , Minagawa and Takizawa, 1980; 31 , Sharma and Pervez, 2004; 32 , Howe et al., 2005; 33 , Finkelman, 20 03; 34 , Rytuba, 20 03; 35 , Snyder-Conn...