Distribution and partitioning of iron, zinc, and arsenic in surface sediments in the Grande River mouth to Cuitzeo Lake, Mexico

Villalobos-Castañeda, Benjamín; Alfaro-Cuevas, Ruth; Cortés-Martínez, Raúl; Martínez-Miranda, Verónica; Márquez-Benavides, Liliana

doi:10.1007/s10661-009-1005-7

Cited by 20 publications

(18 citation statements)

References 35 publications

(50 reference statements)

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“…The RAC (Risk Assessment Code) shown in Table 5 indicates that sediments in which metals bound to the ion-exchange and carbonate fractions make less than 1% can be regarded as safe for the environment. However, the sediments in which more than 50% of the total metal content is released from the same fractions must be acknowledged as highly dangerous because the released element can easily pass into the water food chain [40,59]. Figures 4 and 5 present the distribution of the examined elements in the individual fractions in four sample sets corresponding to respective seasons.…”

Section: Bioavailability and Mobility Of Elements With The Applicatiomentioning

confidence: 99%

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Jabłońska‐Czapla¹,

Szopa²,

Rosik-Dulewska³

2014

Archives of Environmental Protection

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Abstract:The research aim was to determine the long-term impact of the mine waste stored at the coal waste dump Hałda Ruda on the content of heavy metals in the bottom sediments of the Bytomka River. It is a watercourse fl owing along this coal waste dump and has been under its infl uence for over fi fty years. The research also attempted to determine the seasonality of changes (2 years) and mobility of selected elements.The article presents total contents of Cr, Mn, Ni, Cu, Zn, As, Cd and Pb in the bottom sediments collected from the Bytomka River. It also focuses on the distribution of these elements in particular geochemical fractions determined with the Tessier's sequential chemical extraction procedure. Total element contents were determined with an EDPXRF (Energy Dispersive X-ray Fluorescence) technique. The extractants of particular Tessier's fractions were determined quantitatively with an ICP-MS (Inductively Coupled Plasma Mass Spectrometry) spectrometer. The research results show that the stored waste signifi cantly infl uences the contents of heavy metals in the Bytomka River bottom sediments. The lowest concentration of heavy metals was observed at the B1 spot (above the dump), while the highest one was measured at the B3 spot (below the dump).Sequential chemical extraction of the bottom sediments indicates that the Zn content in the ion-exchange and carbonate fractions diminished within a year. Nevertheless, Zn bound to Fe and Mn oxides acted in the opposite way. Mn, Zn and Pb are the most dangerous elements from the viewpoint of environmental hazards, as their total concentrations were high. Moreover, their high contents were observed in the most mobile (ion-exchange and carbonate) fractions. Extremely toxic Cd was bound to the oxide fraction to the largest extent. Cu was mainly bound to the organic fraction while environmentally hazardous Cr was bound to the residual fraction.

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Section: Bioavailability and Mobility Of Elements With The Applicatiomentioning

confidence: 99%

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Jabłońska‐Czapla¹,

Szopa²,

Rosik-Dulewska³

2014

Archives of Environmental Protection

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“…), which ensures that results obtained in different laboratories can be compared accurately [16]. Therefore, BCR-SES protocol is normally used to study heavy metal distribution in sediments [14, 17–22]. …”

Section: Introductionmentioning

confidence: 99%

Trace Metal Content of Sediments Close to Mine Sites in the Andean Region

Yacoub

Foguet²,

Miralles

2012

The Scientific World Journal

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This study is a preliminary examination of heavy metal pollution in sediments close to two mine sites in the upper part of the Jequetepeque River Basin, Peru. Sediment concentrations of Al, As, Cd, Cu, Cr, Fe, Hg, Ni, Pb, Sb, Sn, and Zn were analyzed. A comparative study of the trace metal content of sediments shows that the highest concentrations are found at the closest points to the mine sites in both cases. The sediment quality analysis was performed using the threshold effect level of the Canadian guidelines (TEL). The sediment samples analyzed show that potential ecological risk is caused frequently at both sites by As, Cd, Cu, Hg, Pb, and Zn. The long-term influence of sediment metals in the environment is also assessed by sequential extraction scheme analysis (SES). The availability of metals in sediments is assessed, and it is considered a significant threat to the environment for As, Cd, and Sb close to one mine site and Cr and Hg close to the other mine site. Statistical analysis of sediment samples provides a characterization of both subbasins, showing low concentrations of a specific set of metals and identifies the main characteristics of the different pollution sources. A tentative relationship between pollution sources and possible ecological risk is established.

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“…Sediments from Lake Yuriria were used to muddy the water. We did not use sediments from Cuitzeo because water pollution could harm the fish [19]. In the laboratory, the sediments were dried and sieved to obtain a concentration of 422 mg/l of suspended solids (particles of approximately 1 μ), which was considered 100% turbidity.…”

Section: Methodsmentioning

confidence: 99%

Visual Detection of Speckles in the Fish Xenotoca variata by the Predatory Snake Thamnophis melanogaster in Water of Different Turbidity

et al. 2015

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Semi-aquatic snakes integrate visual and chemical stimuli, and prey detection and capture success are therefore linked to the display of visual predatory behavior. The snake Thamnophis melanogaster responds preferentially to individuals of the fish Xenotoca variata with a greater number of bright, colorful spots (lateral speckles) compared with those with a smaller number; however, water turbidity can reduce underwater visibility and effect the vulnerability of fish. In this study, we tested whether the presence of iridescent speckles on the flanks of male X. variata interacted with water turbidity to modify the predatory behavior displayed by the snake T. melanogaster. We predicted that in an experimental laboratory test, the snakes would increase the frequency of their predatory behavior to the extent that the water turbidity decreases. The snakes were tested at six different levels of water turbidity, in combination with three categories of male fish (with few, a median number of, or many speckles). The results showed that in a pool with high or zero turbidity, the number of speckles is not a determining factor in the deployment of the predatory behavior of the snake T. melanogaster toward X. variata. Our findings suggest that snakes can view the fish at intermediate percentages of turbidity, but the number of speckles in male X. variata is irrelevant as an interspecific visual signal in environments with insufficient luminosity. The successful capture of aquatic prey is influenced by integration between chemical and visual signals, according to environmental factors that may influence the recognition of individual traits.

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Distribution and partitioning of iron, zinc, and arsenic in surface sediments in the Grande River mouth to Cuitzeo Lake, Mexico

Cited by 20 publications

References 35 publications

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Trace Metal Content of Sediments Close to Mine Sites in the Andean Region

Visual Detection of Speckles in the Fish Xenotoca variata by the Predatory Snake Thamnophis melanogaster in Water of Different Turbidity

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