Anthropogenic and climate induced trace element contamination in a water reservoir in northwestern Mexico

Ochoa-Contreras, Roberto; Jara-Marini, Martín E.; Sanchez-Cabeza, Joan-Albert; Meza-Figueroa, Diana; Pérez-Bernal, Libia Hascibe; Ruíz-Fernández, Ana Carolina

doi:10.1007/s11356-020-11995-3

Cited by 10 publications

(3 citation statements)

References 66 publications

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“…17 However, strontium incorporation is also characteristic of diagenetic change. 17,28,[33][34][35] Hg, on the other hand, is more commonly related to environmental contamination from polluting agents, [36][37][38] which is probably the case of the water where the fossil was found. As it is not present in the dentine or enamel, its presence along the BS is not likely due to the animal diet, as reported in the literature.…”

Section: Resultsmentioning

confidence: 99%

Elemental characterization of aPuma concolorfossil by non‐destructive X‐ray techniques

et al. 2023

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Over the lifetime of an animal, metabolic processes in the body maintain bone tissues in a dynamic state of equilibrium. After the death of the organism, bone tissues undergo diagenesis, an intense transformation that affects its physicochemical constitution. Although many recent works have greatly contributed to the understanding of the processes surrounding diagenesis, there is still much yet to be understood about this multifaceted phenomena. In this work, XRF and microCT were used to characterize the specimen elemental configuration and investigate the fossilization process of a recovered Puma concolor (cranium, mandible and teeth elements), found submerged in a lake in the Impossível‐Ioiô Cave System (Bahia, Brazil). MicroCT enabled the identification of the density distribution throughout the specimens, which were used as reference to XRF analyses. The XRF spectra of the analyzed specimen showed the presence of 11 elements: P, Cl, Ca, Mn, Fe, Cu, Zn, Br, Sr, Y and Hg. Yttrium counts proved to be regular throughout the specimen surface and decreased in the interface between bone surface and interior, evidencing their correspondence to sample environmental exposure. Furthermore, a correlation between fossil surface coloration, element configuration and density is presented. The relatively low presence of Fe and Y in the enamel elicits its elementary and structural preservation. The combined results contribute to the understanding of the physicochemical process of paleomastozoological fossilization, further enriching the comprehension of the process of fossilization in a submerged environment.

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Section: Resultsmentioning

confidence: 99%

Elemental characterization of aPuma concolorfossil by non‐destructive X‐ray techniques

et al. 2023

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“…The water hydrochemical composition of reservoirs, including the concentrations of major ions and trace elements, relies on natural (weathering processes, lithology of the basin, the composition of water in tributaries, etc. ), and anthropogenic factors [12,13]. The anthropogenic enrichment of water chemical composition is determined both by the creation of the reservoir [14], and the entry of these elements with discharge water from different industries and agriculture, surface runoff, and atmospheric transport from urban areas.…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical Characteristics and Water Quality Assessment of Irkutsk Reservoir (Baikal Region, Russia)

Pastukhov,

Poletaeva,

Hommatlyyev

2023

Water

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The Irkutsk Reservoir, belonging to the largest unified freshwater Baikal–Angara system, is an important source of drinking water in the region. Therefore, studies of its hydrochemical characteristics are of prime importance in deciding on the role of anthropogenic activity in water quality. The water samples were collected across the reservoir in 2007, 2012, and 2021 and then were analyzed for major ions and trace elements. The data revealed that the distribution of HCO3−, SO42−, Cl−, Ca2+, Mg2+, Na+ and K+ is stable across the reservoir. Trace element concentrations varied from 1.13 to 15.39 µg L−1 for Al, from <DL to 0.39 µg L−1 for Cr, from 0.39 to 23.12 µg L−1 for Mn, from 1.25 to 53.22 µg L−1 for Fe, from 0.005 to 0.100 µg L−1 for Co, from 0.20 to 1.98 µg L−1 for Cu, from <DL to 13.40 µg L−1 for Zn, from 0.25 to 0.48 µg L−1 for As, from 0.004 to 0.127 µg L−1 for Cd, from <DL to 0.195 µg L−1 for Sn, from <DL to 0.0277 µg L−1 for Cs, from <DL to 1.13 µg L−1 for Pb, from <DL to 0.0202 µg L−1 for Th, and from 0.27 to 0.75 µg L−1 for U. The concentrations of all major ions and trace elements in water were below the drinking water standards. CF values showed considerable and high contamination of samples with Al, Mn, Fe, Co, Cu, Cd, Sn, Pb, and Th. PLI values classified the majority of water samples as water with baseline levels of pollutants, and part of the samples was classified as either polluted or highly polluted.

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“…This phenomenon has been linked to rainfallinduced perturbations in reservoirs and rivers [1,2]. Ochoa-Contreras et al [3] also observed that the distribution of heavy metal concentrations in sedimentary rocks can be used to predict the heavy metals that have the greatest influence on water quality. To ascertain whether the raw water in a reservoir is polluted by heavy metals, the Sediment Quality Guidelines can be used to analyze sediment toxicity and pollutants in the water column [4,5].…”

Section: Introductionmentioning

confidence: 99%

Automated Monitoring of a High-Speed Flocculation Flat-Bottomed Sludge Blanket Clarifier Pond during Drought and Flood Conditions

Chung³

2022

Water

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The occasional rains that occur during dry seasons often stir up the bottom sediment of reservoirs, which leads to high turbidity and electrical conductivity in raw waters received by water utility companies. A newly developed real-time precision multi-layer sensor (RPMS) system was used to monitor a high-speed flocculation flat-bottomed sludge blanket clarifier (HFSBC) pond in real time to solve the water quality problems caused by drought and flood conditions. The RPMS is capable of monitoring the thickness of a sludge blanket; if the coagulation and sedimentation processes of the HFSBC are not working well, the sludge blanket will be thin and have a low sludge concentration. Conversely, if the HFSBC is working properly, the sludge blanket will have a thick and highly concentrated layer of sludge. Any heavy metals that are not removed by water treatment processes will enter the water supply network, which will result in poor water quality for end users. Against the backdrop of intensifying climate change, the enhancement of automated monitoring systems and adaptation processes will be an important part of efforts to minimize and resolve acute changes in water quality.

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Anthropogenic and climate induced trace element contamination in a water reservoir in northwestern Mexico

Cited by 10 publications

References 66 publications

Elemental characterization of aPuma concolorfossil by non‐destructive X‐ray techniques

Elemental characterization of aPuma concolorfossil by non‐destructive X‐ray techniques

Hydrochemical Characteristics and Water Quality Assessment of Irkutsk Reservoir (Baikal Region, Russia)

Automated Monitoring of a High-Speed Flocculation Flat-Bottomed Sludge Blanket Clarifier Pond during Drought and Flood Conditions

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