Distribution of mercury in the aquatic environment at Almadén, Spain

Nevado, J. J. Berzas; Bermejo, Luisa F. García; Martín-Doimeadios, Rosa C. Rodríguez

doi:10.1016/s0269-7491(02)00290-7

Cited by 124 publications

(42 citation statements)

References 26 publications

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“…Sites located immediately downstream from the plant were statistically different (p<0.05) to sites located upstream and furthest downstream of the plant. The decrease in TotHg concentrations further away from the plant could likely be attributed to possible sedimentation of particulate Hg (Cardona-Marek et al 2007) or pollution dilution effects (Turner and Lindberg 1978;Synder and Hendricks 1997), similar to what has been observed in other historically Hgcontaminated sites (Berzas Nevado et al 2003).…”

Section: Mercury In Watersupporting

confidence: 58%

“…This observation identifies those sites situated immediately downstream of the plant as being a potential Hg "hotspot". The high MeHg levels measured in sediment at DM2 could explain the fish MeHg concentrations also measured at DM2 illustrating that contaminated sediments are a continual source of Hg to biota, similar to what has been observed in other historically Hg-contaminated sites (Berzas Nevado et al 2003). Rural communities in the area rely heavily on fish obtained from the river system and may Table 1) consume fish on a daily basis (Barrat and Combrink 2002).…”

Section: Mercury In Biotamentioning

confidence: 55%

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Mercury concentrations at a historically mercury-contaminated site in KwaZulu-Natal (South Africa)

Williams¹,

Leaner

Somerset³

et al. 2011

Environ Sci Pollut Res

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Section: Mercury In Watersupporting

confidence: 58%

Section: Mercury In Biotamentioning

confidence: 55%

Mercury concentrations at a historically mercury-contaminated site in KwaZulu-Natal (South Africa)

Williams¹,

Leaner

Somerset³

et al. 2011

Environ Sci Pollut Res

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“…1). The district is well known for widespread high levels of Hg in the air, water, soil, and stream sediments (Berzas Nevado, García Bermejo, & Rodríguez Martín-Doimeadios, 2003;Higueras, Oyarzun, Biester, Lillo, & Lorenzo 2003, Higueras et al, 2006Gray, Hines, Higueras, Adatto, & Lasorsa, 2004). Our study is an update and a regional extension of previous studies (Hildebrand et al, 1980;Millá n et al, 2004) to include the great variety of habitats present in the mining district.…”

Section: Introductionmentioning

confidence: 60%

Mercury accumulation in soils and plants in the Almadén mining district, Spain: one of the most contaminated sites on Earth

Molina

Oyarzún

Esbrí

et al. 2006

Environ Geochem Health

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Although mercury (Hg) mining in the Almadén district ceased in May 2002, the consequences of 2000 years of mining in the district has resulted in the dissemination of Hg into the surrounding environment where it poses an evident risk to biota and human health. This risk needs to be properly evaluated. The uptake of Hg has been found to be plant-specific. To establish the different manners in which plants absorb Hg, we carried out a survey of Hg levels in the soils and plants in the most representative habitats of this Mediterranean area and found that the Hg concentrations varied greatly and were dependent on the sample being tested (0.13-2,695 microg g(-1) Hg). For example, the root samples had concentrations ranging from 0.06 (Oenanthe crocata, Rumex induratus) to 1095 (Polypogon monspeliensis) microg g(-1) Hg, while in the leaf samples, the range was from 0.16 (Cyperus longus) to 1278 (Polypogon monspeliensis) microg g(-1) Hg. There are four well-differentiated patterns of Hg uptake: (1) the rate of uptake is constant, independent of Hg concentration in the soil (e.g., Pistacia lentiscus, Quercus rotundifolia); (2) after an initial linear relationship between uptake and soil concentration, no further increase in Hg(plant) is observed (e.g., Asparagus acutifolius, Cistus ladanifer); (3) no increase in uptake is recorded until a threshold is surpassed, and thereafter a linear relationship between Hg(plant) and Hg(soil) is established (e.g., Rumex bucephalophorus, Cistus crispus); (4) there is no relationship between Hg(plant) and Hg(soil )(e.g., Oenanthe crocata and Cistus monspeliensis). Overall, the Hg concentrations found in plants from the Almadén district clearly reflect the importance of contamination processes throughout the study region.

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“…Different literature studies report a Me-Hg to total Hg ratio of about 25-40% in the Mediterranean mussel (Mikac et al, 1996;Berzas Nevado et al, 2003;Spada et al, 2011).…”

Section: Metal Concentrations In Mussels and Related Risk For Human Hmentioning

confidence: 95%

Heavy metals monitoring in mussels Mytilus galloprovincialis from the Apulian coasts (Southern Italy)

et al. 2013

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Concentrations of six heavy metals (Cd, Cr, Cu, Hg, Pb and Zn) and one semi-metal (As) were determined in tissues of the mussel Mytilus galloprovincialis collected along the Apulian coast (Mediterranean Sea). This project, executed in 2009, focused on the assessment of the levels and spatial distribution of metals in the environment, in order to evaluate coastal water quality, using mussels as bioindicators, and the health risk for mussel consumers. The concentrations (mg/kg d.w.) of these metals ranged from 6.35 to 76.17 for arsenic (As), 0.38 to 2.54 for cadmium (Cd), 0.96 to 9.46 for chromium (Cr), 5.26 to 19.22 for copper (Cu), 0.10 to 0.81 for mercury (Hg), 25.00 to 110.51 for zinc (Zn) and 0.37 to 3.25 for lead (Pb). These levels were lower than the permissible limits set by the European Commission and FAO, with the exception of Cr at three sampling stations. Evaluation of the public health risk associated with mollusc consumption indicates that there is no evident risk for a moderate Mytilus g. consumer; however, heavy metal concentrations must be monitored periodically and carefully with respect to consumer health.

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Distribution of mercury in the aquatic environment at Almadén, Spain

Cited by 124 publications

References 26 publications

Mercury concentrations at a historically mercury-contaminated site in KwaZulu-Natal (South Africa)

Mercury concentrations at a historically mercury-contaminated site in KwaZulu-Natal (South Africa)

Mercury accumulation in soils and plants in the Almadén mining district, Spain: one of the most contaminated sites on Earth

Heavy metals monitoring in mussels Mytilus galloprovincialis from the Apulian coasts (Southern Italy)

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