Three-dimensional modeling of Cu and Pb distributions in Boston Harbor, Massachusetts and Cape Cod Bays

Li, Li; Palá, Francisco Borrás; Jiang, Mingshun; Krahforst, C.; Wallace, Gordon G.

doi:10.1016/j.ecss.2010.05.003

Cited by 14 publications

(8 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The annual mean concentrations of total dissolved Cu, Pb, Cd, and Zn in Sishili Bay were compared with those from other marine areas ( Table 1). The results for all dissolved concentrations of Cu, Pb, Cd, and Zn found values of the same order of magnitude as those reported for Bohai Bay (Meng et al, 2008;Mao et al, 2009), Jinzhou Bay (Wang et al, 2012), the North Yellow Sea (Tian et al, 2009), the San Francisco Bay (Flegal et al, 1991), Boston Harbor (Li et al, 2010), and the Weser estuary (Turner et al, 1992). The concentrations of Cu in Sishili Bay were comparable with those in Bohai Bay, Jinzhou Bay, and the Weser estuary but higher than concentrations in the North Yellow Sea, the San Francisco Bay, and Boston Harbor.…”

Section: Species Of Tmssupporting

confidence: 79%

Species, Spatial-Temporal Distribution, and Contamination Assessment of Trace Metals in Typical Mariculture Area of North China

et al. 2020

View full text Add to dashboard Cite

The species, spatial-temporal distribution, sources, correlations with physiochemical factors, and the contamination of trace metals (Cu, Pb, Cd, and Zn) were investigated in a typical mariculture area of North China. The concentrations of three species of trace metals, including total dissolved, dissolved reactive, and dissolved inert, were obtained. The total dissolved concentrations of Cu, Pb, Cd, and Zn ranged within 1.75-8.08, 0.43-2.75, 0.07-0.29, and 2.58-30.28 µg/L, respectively. These ranges were measured over 5 months (March, May, July, September, and November) and their concentrations decreased in the following order: Zn > Cu > Pb > Cd. The concentrations of Cu, Pb, Cd, and Zn decreased from nearshore to offshore, showing a distinctly regional variation. All concentrations of trace metals over the whole mariculture area were lower than the grade-II seawater quality standard of China. The relationships between trace metals with micronutrient metal (Fe) and other environmental factors (i.e., temperature, chlorophyll a, salinity, dissolved oxygen, and conductivity) were studied in detail. Discharged industrial and aquaculture effluents, uptake by organisms, and atmospheric deposition were found to be possible sources of trace metals in the studied area. Sea current and physicochemical parameters were factors that possibly influenced the spatial-temporal distribution of trace metals.

show abstract

Section: Species Of Tmssupporting

confidence: 79%

Species, Spatial-Temporal Distribution, and Contamination Assessment of Trace Metals in Typical Mariculture Area of North China

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The diffusive flux of Pb at both sites is usually very low throughout the year. Annual average diffusive fluxes of Cu from HB sediments make up a significant fraction of the benthic flux calculated by Li et al (2010) to account for the persistent high metal concentrations in the waters of Boston Harbor. The two sites illustrate the different pathways of metal cycling that are possible within the coastal zone.…”

Section: Discussionmentioning

confidence: 99%

“…Annual average diffusive fluxes calculated here (Table 3) can be compared with the benthic fluxes estimated from the coupled hydrodynamicwater quality model of Boston Harbor (Li et al, 2010). The HB data are considered appropriate to represent other fine-grained sediments in Boston Harbor as the metal concentrations are comparable at other sites (Zago et al, 2001;Lefkovitz et al, 2006) and the porewater profiles from the northern Harbor (Zago et al, 2001) are similar to those at HB.…”

Section: Benthic Fluxes and Boston Harbor Water Qualitymentioning

confidence: 96%

“…The concentration of metals in the water column of the Harbor however, did not decrease significantly between 1991 and 2002. A combined hydrodynamic-water quality model of the Harbor predicted dissolved concentrations of Pb and Cu that were less than 20% of measured values, which is likely due to benthic fluxes from contaminated sediments (Li et al, 2010). We conducted the study described here to determine the mechanisms that drive the benthic metal flux.…”

Section: Study Sitesmentioning

confidence: 98%

“…The resulting precipitate Table 3 Sampling times, water temperature and calculated diffusive flux across the sediment-water interface for Hingham Bay and Massachusetts Bay sites. The modeled benthic flux for Boston Harbor (Li et al, 2010) is also given. was digested with two additions of 25 μL of concentrated nitric acid (Fisher Optima), diluted with MQ water and analyzed with a Finnigan Element 2 ICP-MS.…”

Section: Porewater and Solid Phase Analysismentioning

confidence: 99%

See 2 more Smart Citations

Porewater dynamics of silver, lead and copper in coastal sediments and implications for benthic metal fluxes

Kalnejais

Martin

Bothner

2015

Science of The Total Environment

View full text Add to dashboard Cite

Photodissolution of copper from resuspended coastal marine sediments

Skrabal

McBurney

Webb

et al. 2017

Limnology & Oceanography

View full text Add to dashboard Cite

Total dissolved Cu (TDCu) was photoproduced from suspensions of estuarine and coastal marine sediments from varied biogeochemical settings after exposure to the equivalent of 1 day of sunlight. Net photorelease (defined as the difference between mean light and dark concentrations) of TDCu occurred in 10 of 13 experiments and ranged from 1.1 nM to 11.8 nM (0.88–46.1 nmol Cu g−1 dry sediment). Photorelease was observed over environmentally relevant total suspended sediment concentrations ranging from 38 mg L−1 to 460 mg L−1. The magnitude of photorelease was directly correlated to the 1 M HCl‐extractable Cu and Fe contents of sediments. Photoreleased Cu was likely associated with organic matter and/or Fe oxyhydroxides, both of which are photoreactive. Photoreleased TDCu persisted for at least 24 h after irradiation indicating that the Cu was not immediately scavenged back onto particles, most likely because it was stabilized by complexation with dissolved organic matter. Results of this study are important because a conservative estimate of the areal flux of TDCu from irradiation of a modest suspended sediment loading of 100 mg L−1 in the top 100 cm of a sunlit water column would be 460 nmol m−2 d−1, which is comparable to or significantly larger than benthic and riverine fluxes of the metal in estuarine and coastal environments. These results suggest that photolytic fluxes are a significant yet previously unrecognized source of bioactive Cu to natural waters.

show abstract

Three-dimensional modeling of Cu and Pb distributions in Boston Harbor, Massachusetts and Cape Cod Bays

Cited by 14 publications

References 49 publications

Species, Spatial-Temporal Distribution, and Contamination Assessment of Trace Metals in Typical Mariculture Area of North China

Species, Spatial-Temporal Distribution, and Contamination Assessment of Trace Metals in Typical Mariculture Area of North China

Porewater dynamics of silver, lead and copper in coastal sediments and implications for benthic metal fluxes

Photodissolution of copper from resuspended coastal marine sediments

Contact Info

Product

Resources

About