Historical trends of metals in the sediments of San Francisco Bay, California

Hornberger, Michelle I.; Luoma, Samuel N.; Geen, Alexander van; Fuller, Christopher C.; Anima, Roberto J.

doi:10.1016/s0304-4203(98)80083-2

Cited by 239 publications

(156 citation statements)

References 49 publications

Supporting

Mentioning

144

Contrasting

Unclassified

Order By: Relevance

“…The accumulated metal contents in marine sediments can affect the distribution and composition of benthic groupings (Kress et al, 2004) and this may be accompanying to high concentration noted in living organisms (Pempkowiak et al, 1999). Hornberger et al, (1999) revealed that human activities have significantly increased heavy metal deliveries to estuaries and bays. Because many metals are toxic to aquatic organisms at trace levels, even relatively small changes in their concentrations may have ecosystem-wide implications.…”

Section: Introductionmentioning

confidence: 99%

Untitled

Zaqoot¹,

Aish²,

Wafi³

2017

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

The concentrations of manganese (Mn), copper (Cu), zinc (Zn), nickel (Ni), cobalt (Co), lead (Pb) and cadmium (Cd) in the muscles of grey mullet (Mugil cephalus) that were collected from Gaza fishing harbor and the surrounding areas were investigated in this study. Eight sampling locations were selected to conduct the study along the coast of Gaza. The samples were taken in September, November 2013 and March 2014. Heavy metals were identified and analyzed by Flame Atomic Absorption Spectrophotometer. The mean concentrations of heavy metals in soft tissues of fish were as follows: Mn:0.90 µg/g; Cu:13.15 µg/g; Zn:25.87 µg/g; Ni:1.10 µg/g; Co:0.68 µg/g; Pb:1.82 µg/g and Cd:0.27 µg/g, respectively. The highest concentrations of metals in fish tissues were found to be detected for zinc (13.56-40.43 µg/g) and the lowest were for cobalt (nd-2.93 µg/g) and cadmium (0.02-0.51 µg/g). The heavy metal concentrations in most fish samples were found to be below the acceptable limits proposed for fish by various international standards such as European Union (EU), World Health Organization (WHO), and Turkish guidelines (TFC). Therefore, it can be concluded that no risk on human health would be elevated at present from the consumption of fish collected from Gaza fishing harbor.

show abstract

Section: Introductionmentioning

confidence: 99%

Untitled

Zaqoot¹,

Aish²,

Wafi³

2017

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

show abstract

“…sediment extracts used by Hornberger et al 1999 for other metal determinations was measured by GFAAS with calibration by standard additions. parison of the two time series suggests that fluctuations in the composition of Central Bay water reflect at least in part seasonal variations in the composition of coastal water.…”

Section: Sediment CD Determinationsmentioning

confidence: 99%

“…in the same core Fig. 4; Hornberger et al, 1999 . Extreme levels of Cd enrichment have been reported in the vicinity of a few point sources, however Ž .…”

mentioning

confidence: 96%

“…Although this is hard to establish with certainty, it may be that the subsurface maximum in sediment Cd concentrations between 60 and 30 cm depth is a reflection of anthropogenic inputs caused by mining activities, industrialization, and urban run-Ž . off Hornberger et al, 1999 . The release of ; 53 kg of fluorescent Zn-Cd-sulfide particles to the air over the San Francisco Bay area in 1950 and 1967 as part Ž of the US Army's chemical warfare tests NRC, .…”

mentioning

confidence: 97%

See 1 more Smart Citation

A record of estuarine water contamination from the Cd content of foraminiferal tests in San Francisco Bay, California

Geen

Luoma

1999

Marine Chemistry

Self Cite

View full text Add to dashboard Cite

A five-year dissolved Cd time series from San Francisco Bay and adjacent coastal water shows that the composition of surface water towards the mouth of the estuary is determined largely by the effect of coastal upwelling. Cd concentrations Ž . inside and outside the estuary 0.2-1.0 nmolrkg increase as Cd-rich deep water is advected to the surface near the coast Ž . during spring and summer. On average, the mean Cd concentrations inside San Francisco Bay 0.54 nmolrkg during Ž . 1991-1995 was significantly higher than outside 0.35 nmolrkg , however. Surface samples collected throughout San Francisco Bay confirm an internal Cd source unrelated to river discharge. The Cd content of the test of a benthic foraminifer Ž . Elphidiella hannai in a dated sediment core from San Francisco Bay was measured to determine if the water column Cd enrichments in San Francisco Bay could be related to the rapid development of the watershed. The method is based on the observation that the CdrCa ratio of carefully cleaned tests of foraminifera is determined by the dissolved Cd content of overlying water at the time of test formation. Pre-industrial foraminiferal CdrCa ratios in the sediment core average Ž . Ž . 274 " 15 nmolrmol n s 19 nmolrmol. Foraminiferal CdrCa ratios increased to 386 " 33 nmolrmol n s 19 over the past several decades indicating a 40% increase in the mean Cd content of surface water in Central San Francisco Bay. We suggest that, in addition to Cd discharges into the estuary, indirect consequences of agricultural development in the Central Valley of California could have contributed to this increase. This new method to reconstruct estuarine contamination is not affected by some of the processes that complicate the interpretation of changes in bulk sediment metal concentrations. q

show abstract

“…On the one hand historic mining and metal working sites form an intrinsic part of humanity's commercial and industrial history and are therefore potentially valuable heritage assets (Edwards, 1996;Palmer et al, 2012;Pyatt et al, 2005), especially if developed as part of wider geoconservation and geotourism initiatives (Larwood et al, 2013). On the other hand, these sites can constitute a serious environmental hazard because of residual contamination (Hornberger et al, 1999;Macklin et al, 1997). Therefore a tension, or dichotomy, commonly exists between cultural and environmental imperatives.…”

Section: Introductionmentioning

confidence: 99%

Industrial mining heritage and the legacy of environmental pollution in the Derbyshire Derwent catchment: Quantifying contamination at a regional scale and developing integrated strategies for management of the wider historic environment

Kossoff

Hudson‐Edwards

Howard

et al. 2016

Journal of Archaeological Science: Reports

View full text Add to dashboard Cite

The Derwent Valley Mills World Heritage Site (DVMWHS) exemplifies and records the 18 th century birth of the factory or mill technology, and for the industrial spinning of cotton. The site is therefore a key global heritage asset. The Derbyshire Derwent catchment also contains another significant cultural asset with a long history -that of mining and, in particular, lead (Pb) mining. In this paper research on mining-and non-mining related Pb contamination of the Derwent catchment is reviewed and used to identify the risks it poses to the DVMWHS.

show abstract

Historical trends of metals in the sediments of San Francisco Bay, California

Cited by 239 publications

References 49 publications

Untitled

Untitled

A record of estuarine water contamination from the Cd content of foraminiferal tests in San Francisco Bay, California

Industrial mining heritage and the legacy of environmental pollution in the Derbyshire Derwent catchment: Quantifying contamination at a regional scale and developing integrated strategies for management of the wider historic environment

Contact Info

Product

Resources

About