Assessment of mining activity on arsenic contamination in surface water and sediments in southwestern area of Santurbán paramo, Colombia

Alonso, David Leonardo; Pérez, Rodrigo Bastidas; Okio, Coco K. Y. A.; Castillo, Elianna

doi:10.1016/j.jenvman.2020.110478

Cited by 58 publications

(29 citation statements)

References 36 publications

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“…Colombia is the country with the largest Páramos area, representing around 50% of the total area in the world [26]. However, this ecosystem is highly impacted by human actions, such as the pressure of pastoral and agricultural activities that threaten these wetlands [27];…”

Section: Study Area: the Bogotá River Basinmentioning

confidence: 99%

Assessing Anthropogenic Dynamics in Megacities from the Characterization of Land Use/Land Cover Changes: The Bogotá Study Case

et al. 2020

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Usually, megacities expand without proper planning in a context of demographic growth and are increasingly dependent on the natural resources related to the occupied area. This is a major challenge for the sustainable management of these territories, justifying the need for a better knowledge of land use/land cover (LULC) distribution and characteristics to observe spatial anthropogenic dynamics. In this study, the Bogotá river basin and the Bogotá megacity were analyzed as a case study. The main objective of this work was to analyze the historical LULC dynamics from 1985 to 2014. Reliable forecasting scenarios were developed using the Land Change Modeler to support sustainable management and planning. Results show an expansion of the Bogotá megacity toward the Northeast and an increase of urban areas within the basin. These changes implied a loss of 58% of forest surface, a strategic ecosystem, from 1985 to 2014. This dynamic is expected to continue, with a 50% increase of urban areas between 2012 to 2050, thus the megacity and neighbor cities potentially become an “urban continuum”. A replacement of crop and pasture lands near the city is expected, even though Bogotá lands are among the best agricultural lands in the Andean region of Colombia.

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Section: Study Area: the Bogotá River Basinmentioning

confidence: 99%

Assessing Anthropogenic Dynamics in Megacities from the Characterization of Land Use/Land Cover Changes: The Bogotá Study Case

et al. 2020

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“…The common pollution indexes for studying the heavy metal concentrations in soil include: the enrichment factor [ 21 , 22 , 23 ], the geoaccumulation Index [ 22 , 24 , 25 ], the Nemerow pollution index [ 26 , 27 , 28 ], the potential ecological risk index [ 25 , 27 ], and the biogeochemical index [ 29 ]. Geostatistics has been proven to be one of the most effective methods for analyzing the spatial distribution of heavy metals in soil and for evaluating the quality of cultivated land.…”

Section: Introductionmentioning

confidence: 99%

“…Ha et al (2014) used the Kriging method and GIS technology to interpolate the nonpoint sources of heavy metal pollution and analyze their distribution characteristics [34]. Multivariate statistical analyses [25,35], principal component analysis [34,36], hierarchical cluster analysis [24,37], and cluster analysis [21] are also widely used in soil heavy metal evaluation. Marrugo-Negrete et al (2017) used multivariate statistical analysis, principal component analysis, and cluster analysis to show that soil pollution was mainly caused by agricultural activities along the Sinu River Basin, Colombia [38].…”

Section: Introductionmentioning

confidence: 99%

“…Gope et al (2017) used cluster analysis to divide the study into three regions (Industrial, Busy Traffic, and National Highway) to analyze the differences in pollution levels [21]. Alonso et al (2020) used hierarchical cluster analysis to find that the distribution of total concentration is related to the continuous drainage of mine waste into the Suratá River [24]. The above research methods are indeed effective, but the research on the interaction between factors is insufficient.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Heavy Metal Pollution in Cultivated Land of Different Quality Grades in Yangtze River Delta of China

Wang

Zhu

et al. 2021

IJERPH

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The distribution of heavy metal pollution in cultivated land is closely related to the quality of the cultivated land. In this study, 533 soil samples were collected from cultivated land in the Yangtze River delta region in China for Cd, Pb, and Hg analyses. Spatial statistical analysis was used to study the heavy metal pollution in the cultivated land, and the driving forces of heavy metal distribution in different cultivated land quality subdivisions were analyzed with GeogDetector. The conclusions are as follows: (1) Among the three heavy metals in the study area, the coefficient of variation of Cd is the largest, and that of Pb is the smallest. The proportion of Cd and Hg exceeding the standard value (the standard of level two in GB 15618—2018) is relatively large, both of which are 5%; (2) From the perspective of the spatial distribution of soil heavy metal pollution, only four counties (CX, HN, WY, and LH) were free of heavy metal pollution. Soil heavy metal pollution in AJ, SY, QJ, and DS counties is relatively serious, and the pollution may come from agricultural activities, manufacturing, and prevalent coastal shipping industries in these counties; (3) The heavy metal pollution levels of cultivated land with different quality levels are different. The high-quality cultivated land has no high contamination, while the medium and the general cultivated land both have high contamination. High contamination is related to Cd for medium and general cultivated lands, and to Hg in only general cultivated land; (4) The main driving factors of heavy metal concentration in cultivated soil were GDP, followed by soil organic matter, and pH. These results indicate that the spatial distribution of heavy metal concentration in cultivated soil was affected by the level of economic development, followed by the ecological environment, indicating that human activities had a critical impact on the ecological environment of cultivated land.

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“…Besides geogenic sources [7][8][9][10], industrial, landfill [11], agricultural, and mining [12,13] activities have also substantially contributed to the contamination of soils and groundwater with As over several decades, making it the third most common regulated inorganic contaminant to be detected at U.S. Superfund sites [14]. The accidental leakage of As compounds into soils and, consequently, into groundwater has been widely reported for a wide range of settings [12,[15][16][17][18]. In addition, the contamination of marine environments represents an increasing global concern because of the potential risks to both human health and along the coast heavily affecting the marine ecosystems [19].…”

Section: Introductionmentioning

confidence: 99%

Redox Dependent Arsenic Occurrence and Partitioning in an Industrial Coastal Aquifer: Evidence from High Spatial Resolution Characterization of Groundwater and Sediments

Sbarbati

Barbieri

Barron

et al. 2020

Water

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Superlative levels of arsenic (As) in groundwater and sediment often result from industrial pollution, as is the case for a coastal aquifer in Southern Italy, with a fertilizer plant atop. Understanding conditions under which As is mobilized from the sediments, the source of that As, is necessary for developing effective remediation plans. Here, we examine hydrogeological and geochemical factors that affect groundwater As concentrations in a contaminated coastal aquifer. Groundwater has been subject to pump-and-treat at a massive scale for more than 15 years and is still ongoing. Nevertheless, As concentrations (0.01 to 100 mg/L) that are four orders of magnitude more than Italian drinking water standard of 10 μg/L are still present in groundwater collected from about 50 monitoring wells over three years (2011, 2016, and 2018). As was quantified in three different locations by sequential extractions of 29 sediment cores in 2018 (depth 2.5 m to −16.5 m b.g.l.), combined with groundwater As composition, the aqueous and solid partitioning of As were evaluated by partition coefficient (Kd) in order to infer the evolution of the contaminant plumes. Most sediment As is found in easily extractable and/or adsorbed on amorphous iron oxides/hydroxides fractions based on sequential extractions. The study shows that As contamination persists, even after many years of active remediation due to the partitioning to sediment solids. This implies that the choice of remediation techniques requires an improved understanding of the biogeochemical As-cycling and high spatial resolution characterization of both aqueous and solid phases for sites of interest.

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Assessment of mining activity on arsenic contamination in surface water and sediments in southwestern area of Santurbán paramo, Colombia

Cited by 58 publications

References 36 publications

Assessing Anthropogenic Dynamics in Megacities from the Characterization of Land Use/Land Cover Changes: The Bogotá Study Case

Assessing Anthropogenic Dynamics in Megacities from the Characterization of Land Use/Land Cover Changes: The Bogotá Study Case

Analysis of Heavy Metal Pollution in Cultivated Land of Different Quality Grades in Yangtze River Delta of China

Redox Dependent Arsenic Occurrence and Partitioning in an Industrial Coastal Aquifer: Evidence from High Spatial Resolution Characterization of Groundwater and Sediments

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