Environmental impact of metalliferous black shales at Talvivaara in Finland, with indication of lake acidification 9000 years ago

Loukola-Ruskeeniemi, Kirsti; Uutela, Aki; Tenhola, M.; Paukola, Tarja

doi:10.1016/s0375-6742(98)00047-8

Cited by 49 publications

(31 citation statements)

References 14 publications

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“…Possible reasons for this relate to both bedrock geology and chemical controls upon solute metal solubility. It is well established that natural metal loadings to the surface drainage network and groundwater reflect the chemical composition of local bedrock (Piispanen and Nykyri 1997;Loukola-Ruskeeniemi et al 1998;Loukola-Ruskeeniemi et al 2003). Values of metal abundance in both average crustal rock and Pontian and Pannonian andesites that dominate bedrock geology in the Baia Mare region (Table 1) indicate that relative to Cu and Zn, Pb content is generally lower.…”

Section: Detectable Concentrations and Metal Solubilitymentioning

confidence: 99%

Heavy metals in potable groundwater of mining-affected river catchments, northwestern Romania

Bird¹,

Macklin²,

Brewer³

et al. 2009

Environ Geochem Health

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Groundwater, accessed using wells and municipal springs, represents the major source of potable water for the human population outside of major urban areas in northwestern Romania, a region with a long history of metal mining and metallurgy. The magnitude and spatial distribution of metal contamination in private-supply groundwater was investigated in four mining-affected river catchments in Maramureş and Satu Mare Counties through the collection of 144 groundwater samples. Bedrock geology, pH and Eh were found to be important controls on the solubility of metals in groundwater. Peak metal concentrations were found to occur in the Lapuş catchment, where metal levels exceed Dutch target and intervention values in up to 49% and 14% of samples, respectively. A 700 m wide corridor in the Lapuş catchment on either side of the main river channel was identified in which peak Cd (31 μg l(-1)), Cu (50 μg l(-1)), Pb (50 μg l(-1)) and Zn (3,000 μg l(-1)) concentrations were found to occur. Given the generally similar bedrock geologies, lower metal levels in other catchments are believed to reflect differences in the magnitude of metal loading to the local environment from both metal mining and other industrial and municipal sources. Sampling of groundwater in northwestern Romania has indicated areas of potential concern for human health, where heavy metal concentrations exceed accepted environmental quality guidelines. The presence of elevated metal levels in groundwater also has implications for the implementation of the EU Water Framework Directive (WFD) and achieving 'good' status for groundwater in this part of the Danube River Basin District (RBD).

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Section: Detectable Concentrations and Metal Solubilitymentioning

confidence: 99%

Heavy metals in potable groundwater of mining-affected river catchments, northwestern Romania

Bird¹,

Macklin²,

Brewer³

et al. 2009

Environ Geochem Health

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“…It is well established that natural metal loadings to groundwater reflect the (Piispanen and Nykyri 1997;Loukola-Ruskeeniemi et al 1998, 2003. In general, water composition mostly depends on the aquifer soil with rainwater pattern reaction condition.…”

Section: Physicochemical Parameters Of Aquifer Soilmentioning

confidence: 99%

Assessment of hydro-geochemistry and groundwater quality of Rajshahi City in Bangladesh

2017

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The study was carried out to understand the hydro-geochemistry and ground water quality in the Rajshahi City of Bangladesh. A total of 240 groundwater samples were collected in 2 years, i.e., 2009 and 2010 covering the pre-monsoon, monsoon and post-monsoon seasons. Aquifer soil samples were collected from 30 locations during the monsoon in 2000. All the samples were analyzed for various physicochemical parameters according to standard methods of analysis, these includes pH, electrical conductivity, total dissolved solids, total hardness, and total alkalinity, major cations such as Na -, Cl -, and SO 4 2-and heavy metals such as Mn, Zn, Cu, As, Cd and Pb. The results illustrated that the groundwater was slightly acidic to neutral in nature, total hardness observed in all samples fall under the hard to a very hard category. The bicarbonate and calcium concentration in the groundwater exceeded the permissible limits may be due to the dissolution of calcite. The concentration of calcium, iron, manganese, arsenic and lead were far above the permissible limit in most of the shallow tube well samples. The study found that the major hydrochemical facies was identified to be calcium-bicarbonate-type (CaHCO 3 ). A higher concentration of metals including Fe, Mn, As and Pb was found indicating various health hazards. The rock-water interaction was the major geochemical process controlling the chemistry of groundwater in the study area. The study results revealed that the quality of the groundwater in Rajshahi City area was of great concern and not suitable for human consumption without adequate treatment.

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“…Sediment records from a remote subalpine lake in Taiwan covering a time span of 2600 yr indicated that aeolian Asian dust particles have played a signifi cant role in the elevated deposition of Ni during dry periods [120]. The natural enrichment of Ni (up to 0.1% Ni) in a lake sediment core from Finland was related to the prolonged erosion of metalliferous black shales during glacial retreat ca 9000 years ago [121].…”

Section: Sedimentmentioning

confidence: 99%

Biogeochemistry of Nickel and Its Release into the Environment

Nieminen

Ukonmaanaho

Rausch

et al. 2007

Nickel and Its Surprising Impact in Nature

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Environmental impact of metalliferous black shales at Talvivaara in Finland, with indication of lake acidification 9000 years ago

Cited by 49 publications

References 14 publications

Heavy metals in potable groundwater of mining-affected river catchments, northwestern Romania

Heavy metals in potable groundwater of mining-affected river catchments, northwestern Romania

Assessment of hydro-geochemistry and groundwater quality of Rajshahi City in Bangladesh

Biogeochemistry of Nickel and Its Release into the Environment

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