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Berg, Gerard van den; Loch, J. P. G.; Winkels, H.J.

doi:10.1023/a:1004920700598

Cited by 61 publications

(10 citation statements)

References 21 publications

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“…We have therefore not taken into account electrostatic effects in our model. [8] where the dissolved surface complex constants are defined as…”

Section: Surface Complexation Modelmentioning

confidence: 99%

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Heavy Metals Desorption from Synthesized and Natural Iron and Manganese Oxyhydroxides: Effect of Reductive Conditions

Davranche

Bollinger

2000

Journal of Colloid and Interface Science

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“…We have therefore not taken into account electrostatic effects in our model. [8] where the dissolved surface complex constants are defined as…”

Section: Surface Complexation Modelmentioning

confidence: 99%

“…The effect of variations in redox potential on trace element mobility has been illustrated in rice fields (6,7) and freshwater estuary soils (8). Chuan et al (9) showed by monitoring pH and redox potential changes that heavy metal solubility increases under reductive conditions.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals Desorption from Synthesized and Natural Iron and Manganese Oxyhydroxides: Effect of Reductive Conditions

Davranche

Bollinger

2000

Journal of Colloid and Interface Science

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“…Rainfall‐driven waterlogging is one of the striking features for supratidal wetlands in coastal regions, and its fluctuation with seasons is thought to be a major role in establishing the eco‐hydrological process and determining the mobility of trace metals in wetland soils . In contrast to that opinion, trace metal accumulation in clay soils has no significant differences between waterlogged (habitat I) and non‐waterlogged (habitat II) habitats (Figure ).…”

Section: Discussionmentioning

confidence: 99%

The Distribution and Enrichment of Trace Metals in the Rainfall‐Driven Supratidal Wetlands of Tianjin, China

Liu

Zhang

Dong

et al. 2017

CLEAN Soil Air Water

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Soil and plant samples are collected from three rainfall‐driven supratidal wetlands in Duliujian River Estuary (DRE) and Yongdingxin River Estuary (YRE) of Tianjin, China. Trace metal concentrations (As, Cr, Cu, Ni, Pb, Sr, and Zn) and other soil properties are measured. Results show that rainfall‐driven waterlogging has no significant effects on trace metals distribution. However, supratidal wetlands in DRE have higher Ni and Zn, but lower Cr, Pb, and Sr than in YRE. Regardless of initial metal levels in soils, Suaeda salsa in sandy soil has a high bioconcentration factor and translocated more trace metals to the upper parts of plant. The results also show that high salinity in soil is disadvantageous for enrichment and translocation of trace metals in plants. Similarly, soil fertility has diluent effects on trace metal concentrations in plants. Multivariate analysis indicates that Cr, Pb, and Sr might originate from oil pollution and industrial wastewater. However, Zn most probably originates from aquaculture wastewater. Likewise, As and Ni have common sources, which probably originate from parent rocks and atmospheric deposition. Although the ecological risk index for all trace metals are slight, moderate As pollution is found in all habitats according to the sediment quality guideline of China. In addition, enrichment factors of Cr, Pb, and Zn are found to be >1, suggesting slightly polluted for those metals in supratidal regions.

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“…Another natural factor, beyond human control, relevant to understanding the environmental risks of different mining operations is the amount of rain (precipitation) a site receives [19]. Once the rocks are extracted from the underground, the chemical composition and state of oxidation can release to the environment potentially harmful heavy metals and produce acid rock drainage [20].…”

Section: Introductionmentioning

confidence: 99%

Artisanal and Small Gold Mining and Petroleum Production as Potential Sources of Heavy Metal Contamination in Ecuador: A Call to Action

Beate

Diaz

Ochoa

2021

IJERPH

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Mining and petroleum production are the source of many elements and base materials fundamental for our modern way of life. The flip side of these keystone industries is the environmental degradation they can cause if not properly managed. Metallic mining and petroleum production can contaminate the local ecosystem with sediments, chemicals used in the industrial processes and heavy metals, part of the metallic ore or oil reservoir. The objective of this project was to analyze the spatial distribution of the presence of different potentially hazardous elements that make up the metallic deposits and oil reservoirs in Ecuador, focused mainly on artisanal and small-scale gold mining (ASGM) districts. Additionally, we were interested in analyzing this information under the local political and administrative contexts which are key to determining how likely it is that mismanagement of the local mineral deposits and petroleum exploitation projects will end up causing environmental degradation. An extensive and intensive literature search was conducted for information on the presence and concentration of 19 potentially harmful elements. We analyzed data on 11 metallic deposits throughout Ecuador and a major oilfield in the Ecuadorian Amazon basin. We used geographic information systems to analyze the spatial distribution of these reservoirs and their mineral compositions. The results indicated a widespread distribution and high concentration of elements potentially harmful for human health, such as mercury, cadmium and arsenic, throughout the metallic deposits in Ecuador. This is particularly true for long-exploited ASGM districts, such as Ponce-Enríquez, Portovelo-Zaruma and Nambija. This study highlights the importance of understanding geological diversity and its potential risks to better protect the biological diversity and public health of its inhabitants. Furthermore, we consider our work not as a call to stop ASGM mining nor petroleum production, but on the contrary as a strong call to plan every mining and petroleum production project considering these risks. Moreover, our work is a call to action by the local government and authorities to stop corruption and fulfill their duties overseeing the activities of mining and petroleum companies, stopping illegal mining, helping ASGM communities to improve their environmental standards, finding alternative income sources and protecting the local environment.

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Cited by 61 publications

References 21 publications

Heavy Metals Desorption from Synthesized and Natural Iron and Manganese Oxyhydroxides: Effect of Reductive Conditions

Heavy Metals Desorption from Synthesized and Natural Iron and Manganese Oxyhydroxides: Effect of Reductive Conditions

The Distribution and Enrichment of Trace Metals in the Rainfall‐Driven Supratidal Wetlands of Tianjin, China

Artisanal and Small Gold Mining and Petroleum Production as Potential Sources of Heavy Metal Contamination in Ecuador: A Call to Action

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