The impact of atmospheric aerosols on trace metal chemistry in open ocean surface seawater. 2. Copper

Journal Article · Sun Jan 15 04:00:00 EST 1989 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JC094iC01p01039· OSTI ID:5317813

Maring, H B; Duce, R A ^[1]

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1. Univ. of Rhode Island, Narragansett (USA)

Atmospheric deposition contributes copper to the surface ocean. The biogeochemical importance and fate of this copper is poorly understood for open ocean regions. Atmospheric aerosols collected at Enewetak Atoll, in the tropical North Pacific, were exposed to seawater and artificial rainwater in laboratory experiments. Aerosol copper during the high-dust season at Enewetak Atoll is made up of aluminosilicate, oceanic, and possibly soil organic matter components. During the low-dust season, marine aerosols collected at Enewetak is soluble in seawater. Dissolved organic matter and possibly cations in seawater increase the dissolution of aerosol copper. The net atmospheric flux of soluble copper to the tropical North Pacific surface waters as does upwelling to eastern North Pacific surface waters. Atmospheric copper deposition, which appears to be primarily of natural origin, may be the most important input of copper to the surface waters of the central gyre of the North Pacific.

• OSTI ID: 5317813
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 94:C1; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AEROSOLS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC PRECIPITATIONS
BENCH-SCALE EXPERIMENTS
BIOGEOCHEMISTRY
CHEMISTRY
COLLOIDS
COPPER
DEPOSITION
DISPERSIONS
DISSOLUTION
DUSTS
ECOLOGICAL CONCENTRATION
ELEMENTS
GEOCHEMISTRY
HYDROGEN COMPOUNDS
MATTER
METALS
ORGANIC MATTER
OXYGEN COMPOUNDS
PACIFIC OCEAN
RAIN
SEAS
SEAWATER
SILICATES
SILICON COMPOUNDS
SIMULATION
SOLS
SOLUBILITY
SURFACE WATERS
TRACE AMOUNTS
TRANSITION ELEMENTS
WATER