The impact of scavenging on trace metal budgets in Puget Sound

Journal Article · Fri Jul 01 04:00:00 EDT 1988 · Geochimica et Cosmochimica Acta; (USA)

DOI:https://doi.org/10.1016/0016-7037(88)90002-6· OSTI ID:5255942

Paulson, A J; Feely, R A; Curl, Jr, H C; Geiselman, T ^[1]; Crecelius, E A ^[2]

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1. National Oceanic and Atmospheric Administration, Seattle, WA (USA)
2. Battelle Marine Research Laboratory, Sequim, WA (USA)

The distributions of dissolved and particulate Mn, Pb, Cu and Zn in Puget Sound, its tributaries, and its sediments were determined to illustrate the impact of scavenging reactions on trace metal budgets of a large fjordlike estuary. About 75% of the dissolved Pb discharged into the main basin of Puget Sound was scavenged from the dissolved phase. The high particulate Pb concentrations in regions of high particulate Mn concentrations and the significant correlations between Pb and Mn concentrations on suspended particles demonstrate the importance of hydrous manganese oxide phases in scavenging dissolved Pb. Since particles are effectively retained within the main basin, scavenging results in the sedimentation of about 70% of the total Pb added to the main basin. Only isolated instances of scavenging of dissolved Cu and Zn were observed and the discharge rates of dissolved Cu and Zn from known sources were equal to their rates of advective removal within the errors of the budge. The remineralization of organically-bound particulate Cu is partly responsible for its quasi-conservative behavior within the main basin of Puget Sound. The fates of Cu and Zn are controlled mainly by physical processes such as advection and settling of particles. Advection removes about 60% of the total Cu and Zn added to the main basin while 40% is deposited in the sediments of Puget Sound.

• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5255942
• Journal Information: Geochimica et Cosmochimica Acta; (USA), Journal Name: Geochimica et Cosmochimica Acta; (USA) Vol. 52:7; ISSN GCACA; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
CONCENTRATION RATIO
COPPER
DISSOLUTION
ECOLOGICAL CONCENTRATION
ELEMENTS
GEOCHEMISTRY
KINETICS
LEAD
MANGANESE
METALS
OXIDATION
PACIFIC OCEAN
PUGET SOUND
REACTION KINETICS
SEAS
SEDIMENTS
SORPTION
SURFACE WATERS
TRACE AMOUNTS
TRANSITION ELEMENTS
WATER CHEMISTRY
ZINC