Concentrations and concentration factors of heavy metals in brown algae

Foster, P.

doi:10.1016/0013-9327(76)90094-x

Cited by 164 publications

(44 citation statements)

References 13 publications

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“…This is possible due to the ability of marine algae to concentrate metals and to integrate the exposed metal concentration in seawater over a reasonably long time interval and thus smooth out any large, but shortterm, fluctuations in these concentrations. Constancy of mean concentration factors has been reported earlier (Foster 1976). The concentration factor, calculated by dividing the mean metal concentration in the algae by the mean metal concentration in seawater, for the different algal species (Table 4) showed slightly different patterns from the normal accumulation pattern.…”

Section: Concentration Factors In Algaesupporting

confidence: 67%

Metal distributions in seawater, sediment and marine benthic macroalgae from the South Australian coastline

Chakraborty

Owens

2013

Int. J. Environ. Sci. Technol.

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Algal species which are ubiquitous along the coastlines of many countries reflect the environmental conditions of the coastal seawater and may serve as useful biomonitors of anthropogenic pollution. Heavy metal concentrations of ten elements (As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn) of potential environmental concern were determined in seawater, sediments and twelve species of benthic marine macroalgae from four locations (Glenelg, Port Adelaide, Port Broughton and Port Pirie) along the South Australian coastline. The four sites chosen represented varying degrees of metal contamination, where the capacity for benthic macroalgae to accumulate heavy metals from the environment was evaluated. Spatial differences in heavy metal concentration in both seawaters and sediments were observed at all sites with the highest concentrations of heavy metals including Cd (125 lg g -1 ), Pb (2,425 lg g -1 ) and Zn (7,974 lg g -1 ) found in the finer sediment fractions (\250 lm) of Port Pirie. While all algal species studied (Acrosorium polyneurum, Anotrichium tenue, Cystophora Cephalornithos Cystophora monillifera, Cystophora monilliformis, Dictyopteris australis, Gelidium micropterum, Gracilaria, Hormophysa Cuneiformis, Sargassum cinctum, Scaberia agardhii and Ulva lactuca) accumulated metals to varying degrees, Blindigia marginata was a good biomonitor species for a number of metals including Cd, Co, Cr, Fe, Pb and Zn, exhibiting both relatively high total metal concentrations and significant concentration factors.

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Section: Concentration Factors In Algaesupporting

confidence: 67%

Metal distributions in seawater, sediment and marine benthic macroalgae from the South Australian coastline

Chakraborty

Owens

2013

Int. J. Environ. Sci. Technol.

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“…Concentration factor (CF) was calculated according to Foster (1976), in which CF is the ratio of metal concentration in the alga (#,g/g dry wt.) to the concentration of dissolved metal in seawater (Ixg/mL).…”

Section: Methodsmentioning

confidence: 99%

“…This relationship is specific for each metal in each algal species, so that plants in identical environmental conditions exhibit a marked natural variability (Foster 1976). The CF is the ratio between the two variables and should be approximately constant in order to permit comparison of data along environmental and seasonal gradients and between geographically distant areas (Seelinger and Cordazzo 1982).…”

Section: Analysis O F Concentration Factor (Cf)mentioning

confidence: 99%

Metal accumulation in a biological indicator (Ulva rigida) from the lagoon of Venice (Italy)

Favero

Cattalini

Bertaggia

et al. 1996

Arch. Environ. Contam. Toxicol.

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Ulva rigida (C. Agardht) was collected from the Palude della Rosa (lagoon of Venice), a particular area characterized by a salinity gradient, from December 1991 to June 1993. Metal contents (Al, Mn, Fe, Cu, Zn, Cr, Co, Ni, Cd, and Pb) were determined by atomic absorption spectrophotometry and statistically analysed for differences between months and sampling sites. The mean seasonal variability is very significant (p < 0.001) for all studied metals. Seasonal trends are comparable for groups of metals according to possible functional similarities. A significant positive correlation was calculated for the pairs Fe-Al and Fe-Pb. Mechanisms regulating metal uptake are discussed, particularly the role of Fe and its linear relationship with Al. Metal concentrations in relation to salinity also were studied. Larger amounts of Fe, Zn, and Cd accumulated in correspondence of lower salinity, may be owing to both higher metal activity and burden of bioavailable metals in freshwater flowing into the Palude. Calculation of concentration factor (CF) indicates that U. rigida specifically accumulates Fe. CF linearly correlates with dissolved metal concentrations, suggesting that U. rigida is a good bioindicator of metal bioavailability, although seasonal active accumulation occurs in some cases (Mn). Metal concentrations determined in this macroalga support the conclusion that the studied area is rich in bioavailable Fe and poor in toxic metals. In any case, a great affinity for Al in U. rigida may be proposed.

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“…Dulas Bay receives water from Afon Goch, a river known to contain extremely high levels of particular metals such as zinc (5550 pg 1-l) and copper (2850 pg 1-l), and also a relatively high level of cadmium (3.9 pg 1-') (Foster, 1976). Barnacles from this site have therefore been exposed to extremely high concentrations in the field whereas levels of heavy metal exposure at Southendon-Sea were considered likely to be more typical of coastal water.…”

Section: Complexation Of Soluble CD Zn and Cumentioning

confidence: 99%

Effect of Chelating Agents on the Accumulation of Cadmium by the Barnacle Semihlanus balanoides, and Complexation of Soluble Cd, Zn and Cu

Rainbow¹,

Scott²,

Wiggins³

et al. 1980

Mar. Ecol. Prog. Ser.

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The effect of the presence of the chelating agents humate, alginate and EDTA on the accumulation of dissolved cadmium from seawater by the barnacle Semibalanus balanoides (L.) has been investigated. Humate and alginate significantly reduced the accumulation of cadmium after 7 d but any reduction in accumulation after 15 and 30 d was not significant. EDTA significantly reduced cadmium accumulation throughout 30 d exposure. It is concluded that the amount of cadmium accumulated by the barnacles is a function of the level of free Cd2+ ions available in solution. Soluble Cd, Zn and Cu in the barnacles are bound to high (> 30,000 MW) molecular weight proteins and to low molecular weight compounds eluting at or below the lower limit of linear separation of the gel Sephadex G-50 (-1500 MW). There was no evidence for the binding of Cd, Zn and Cu to metallothionein-like proteins. The presence externally of dissolved cadmium complexed with low molecular weight metabolites extracted from barnacles, resulted in no change of cadmium accumulation by barnacles, indicating that the uptake of cadmium does not require the external binding of Cd ions with released metabol~tes before entry into the barnacle.

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Concentrations and concentration factors of heavy metals in brown algae

Cited by 164 publications

References 13 publications

Metal distributions in seawater, sediment and marine benthic macroalgae from the South Australian coastline

Metal distributions in seawater, sediment and marine benthic macroalgae from the South Australian coastline

Metal accumulation in a biological indicator (Ulva rigida) from the lagoon of Venice (Italy)

Effect of Chelating Agents on the Accumulation of Cadmium by the Barnacle Semihlanus balanoides, and Complexation of Soluble Cd, Zn and Cu

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