Vertical distribution of mercury in sediments from the East Pacific Rise

Autor:	Malcolm E. Cox, Gary M. McMurtry
Rok vydání:	1981
Předmět:	geography Multidisciplinary Oceanography geography.geographical_feature_category Volcano chemistry Environmental science chemistry.chemical_element Pelagic zone Hydrothermal circulation Mercury (element)
Zdroj:	Nature. 289:789-792
ISSN:	1476-4687 0028-0836
DOI:	10.1038/289789a0
Popis:	Concentrations of mercury are often high in waters and sediments associated with volcanic hydrothermal systems, in both marine and terrestrial environments. Whereas the concentration of mercury in open ocean waters is reported to be in the range 0.002–0.05 µg 1−1 (refs 1–4), significantly higher values of up to 1.4 µg l−1 are reported in waters near, or having circulated through, areas of submarine hydrothermal activity2,5. Mercury concentrations of up to 400 p.p.b. (parts per 109) on a carbonate-free basis (CFB) have been measured in surface sediments on the East Pacific Rise crest, but concentrations decrease to
Databáze:	OpenAIRE
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