Arsenic bioaccumulation and toxicity in aquatic macrophytes exposed to gold-mine effluent: relationships with environmental partitioning, metal uptake and nutrients

Dushenko, William T.; Bright, Doug A.; Reimer, Kenneth J.

doi:10.1016/0304-3770(95)00448-9

Cited by 46 publications

(25 citation statements)

References 22 publications

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“…: soils, rivers and even ground-waters with time (Ahn et al 2005;Bruce et al 2003;Dushenko et al 1995;Kim and Jung 2004;Lee and Correa 2005;Roychoudhury and Starke 2006). This is the case for the lead and zinc production plant, METALEUROP (in the Douai-city area in northern France) which was closed in January 2003.…”

Section: Introductionmentioning

confidence: 97%

Water-Quality Diagnosis and Metal Distribution in a Strongly Polluted Zone of Deûle River (Northern France)

Lesven

Louriño-Cabana

Billon

et al. 2008

Water Air Soil Pollut

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Using ICP-AES and ICP-MS, several metals were analyzed in water and suspended particulate matter (SPM) samples collected under normal turbidity conditions at various stations from Deûle river (in northern France) to assess the impact of a former smelting plant on the fate of particulate elements and on the water quality in this aquatic environment. Compared to their regional background, particulate Pb, Zn and Cd were found to be most enriched, suggesting anthropogenic inputs from bed sediments into the water column mainly due to physical disturbances induced by barges traffics. Conversely, no significant enrichments of particulate metals such as Cu, Cr and Ni were observed in Deûle SPM. Characterization of SPM with analyses of mineralogical and chemical compositions-using environmental scanning electron microscopy equipped with an energy dispersive X-ray spectrometer (ESEM/ EDS)-indicated the presence of micro-specimens attributed to anthropogenic minerals, mostly PbS and ZnS. The calculated enrichment index (or the geoaccumulation index, I geo ), enrichment factor (EF) and the partition coefficient (K d ) confirmed that SPM was strongly polluted in cadmium, lead and zinc, moderately polluted in copper and unpolluted in chromium and nickel. Based on the analytical data obtained for SPM from the BCR (European Community Bureau of Reference) sequential extraction scheme, it was concluded that: (i) the reducible phases were largely more important for the binding of Pb and Cd than that of Zn and Ni and in a lesser extent Cu and Cr; (ii) copper was found to be mostly associated with the sulphides/ organics fraction; (iii) chromium with a lithogenic origin was extracted in the largest percentage in the residual phase; and (iv) zinc was bound to the exchangeablecarbonate phase in the largest percentage in the particles analysed, followed by nickel and cadmium, suggesting that these metals might be easily remobilized if changes in environmental conditions would occur.

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Section: Introductionmentioning

confidence: 97%

Water-Quality Diagnosis and Metal Distribution in a Strongly Polluted Zone of Deûle River (Northern France)

Lesven

Louriño-Cabana

Billon

et al. 2008

Water Air Soil Pollut

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“…Unlike organic pesticides, inorganic pesticides containing toxic elements such as arsenic are very persistent in the environment. In addition, elements such as arsenic have the tendency to be bio-accumulated by plants, animals and fish (Meador et al, 2004, Pickering et al, 2000, Dushenko et al, 1995, Tompson and Watling 1987, Maeda et al, 1985, Zhang et al, 2001, Carbonell-Barrachina et al, 1999. The toxic effects of both arsenic(III) and arsenic(V) have been shown throughout the literature in many different species of plants (Jain and Ali, 2000).…”

Section: Introductionmentioning

confidence: 99%

Speciation and uptake of arsenic accumulated by corn seedlings using XAS and DRC-ICP-MS

et al. 2008

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ICP-MS was used to investigate the uptake of As(III) and As(V) from hydroponics growth media by corn seedlings. It was found that arsenic uptake by the plant roots for the arsenic(V) and arsenic(III) treatments were 95 and 112 ppm, respectively. However, in the shoots of the arsenic (V) treatments had 18 ppm whereas arsenic(III) treatments had 12 ppm. XANES studies showed that As for both treatments arsenic was present as a mixture of an As(III) sulfur complex and an As(V) oxygen complex. The XANES data was corroborated by the EXAFS studies showing the presence of both oxygen and sulfur ligands coordinated to the arsenic. Iron concentrations were found to increase by 4 fold in the As(V) contaminated growth media and 7 fold in the As(III) treatment compared to the control iron concentration of 500 ppm. Whereas, the total iron concentration in the shoots was found to decrease by approximately the same amount for both treatments from 360 ppm in the control to approximately 125 ppm in both arsenic treatments. Phosphorus concentrations were found to decrease in both the roots and shoots compared to the control plants. The total sulfur in the roots was found to increase in the arsenic(III) and arsenic(V) treatments to 560 ppm and 800 ppm, respectively, compared to the control plants 358 ppm. In addition, the total sulfur in shoots of the plants was found to remain relatively constant at approximately 1080 ppm. The potassium concentrations in the plants were found to increase in the roots and decrease in the shoots.

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“…Aquatic macrophytes accumulate Hg with high concentration factors relative to the Hg concentrations present in water, thus affecting the distribution of this metal among the different compartments of aquatic systems (Lacerda et al, 1991;Dushenko et al, 1995;Villar et al, 1999). Also, macrophyte rhizospheres are important sites of Hg methylation in tropical freshwater ecosystems (Guimarães et al, 1998;2002), acting as a potential Hg source for herbivorous organisms and enhancing Hg transfer along food chains (Suarez et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Mercury contents in aquatic macrophytes from two reservoirs in the Paraíba do Sul: Guandú river system, SE Brazil

et al. 2006

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This paper reports on a study to determine the Hg content in the five most abundant aquatic macrophyte species (Elodea densa, Sagittaria montevidensis, Salvinia auriculata, Pistia stratiotes and Eichhornia crassipes) in two artificial reservoirs flooded by water diverted from the Paraíba do Sul river, SE Brazil. The potential of these species for Hg accumulation and their role in Hg transport along the river system due to macrophyte management were evaluated. Mercury concentrations were higher in free-floating than in rooted species. Roots were also richer in Hg than were leaves. Dry weight Hg concentrations in leaves and roots from all species varied from 46-246 ng.g -1 to 37-314 ng.g -1 , respectively. These values are higher than those reported for uncontaminated lakes in Brazil and in other tropical areas and similar to those reported for moderately contaminated sites. Mercury concentrations can be attributed to fluvial transport from the heavily industrialized Paraíba do Sul river basin. Intensive sampling of Pistia stratiotes from two sites in the Vigário reservoir was performed to evaluate the capacity of Hg incorporation in short periods of time. The results showed a significant negative correlation between Hg content and size class of individual plants, demonstrating the importance of juveniles, fast growing plants in absorbing Hg. The foremost impact related to Hg contents in the studied area concerns the periodic removal of macrophytes for reservoir management, followed by disposal in nearby areas. This results in the mobilization of 0.52 to 1.3 Kg of Hg per year, a significant fraction of the Hg burden present in reservoir waters. Disposal of such material may result in Hg leaching to river systems, affecting the Hg transfer throughout the basin.Keywords: mercury, aquatic macrophytes, artificial reservoirs. RESUMO

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Arsenic bioaccumulation and toxicity in aquatic macrophytes exposed to gold-mine effluent: relationships with environmental partitioning, metal uptake and nutrients

Cited by 46 publications

References 22 publications

Water-Quality Diagnosis and Metal Distribution in a Strongly Polluted Zone of Deûle River (Northern France)

Water-Quality Diagnosis and Metal Distribution in a Strongly Polluted Zone of Deûle River (Northern France)

Speciation and uptake of arsenic accumulated by corn seedlings using XAS and DRC-ICP-MS

Mercury contents in aquatic macrophytes from two reservoirs in the Paraíba do Sul: Guandú river system, SE Brazil

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