Trace metal concentrations in the abiotic and biotic components of River Rwizi ecosystem in western Uganda, and the risks to human health

Basooma, Anthony; Teunen, Lies; Semwanga, Nathan; Bervoets, Lieven

doi:10.1016/j.heliyon.2021.e08327

Cited by 13 publications

(9 citation statements)

References 55 publications

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“…Spatial analyzing methods based on geographic information system have been commonly used to map and investigate environmental contamination [ 18 , 19 , 20 ]. In the present study, ArcGIS 10.2.2 software (ESRI, Redlands, CA, USA) was employed to display the spatial distributions, variation trends and contamination levels of heavy metal contents in the sediments.…”

Section: Methodsmentioning

confidence: 99%

Spatial Distribution, Potential Risks and Source Identification of Heavy Metals in the Coastal Sediments of the Northern Beibu Gulf, South China Sea

Yang

Wang

Liu

et al. 2022

IJERPH

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Thirty samples of surface sediments (0–5 cm) from the northern Beibu Gulf were analyzed to determine the spatial distribution, potential risks and sources of six heavy metals (Cr, Cu, Zn, As, Cd and Pb). The concentrations (mg/kg, dw) of Cr, Cu, Zn, As, Cd and Pb were 15.38 ± 6.06, 6.54 ± 3.23, 41.86 ± 17.03, 6.92 ± 2.75, 0.04 ± 0.02 and 17.13 ± 6.38, respectively. Higher levels of Cr, Cu, Cd and Zn were observed in the western part of the study area. According to the potential ecological risk indexes and sediment quality guidelines, the measured metals were assessed at low contamination levels, with Pb posing the largest ecological risks. The results of positive matrix factorization (PMF) indicated that Cr and Zn mainly originated from natural geological background sources, while Cu, As, Cd and Pb were influenced by anthropogenic sources such as atmospheric deposition and anthropogenic activities. These three sources contributed 60.4%, 28.1% and 11.5% of the heavy metals, respectively. In addition, further research should be conducted focusing on the general relationships between As and various controls in sediments of the northern Beibu Gulf.

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Section: Methodsmentioning

confidence: 99%

Spatial Distribution, Potential Risks and Source Identification of Heavy Metals in the Coastal Sediments of the Northern Beibu Gulf, South China Sea

Yang

Wang

Liu

et al. 2022

IJERPH

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“…In most of the analyzed points, the presence of bottom sediments was detected in little (43.75%) and much quantity (25%). According to and Bassooma et al, (2021), sediments can move and accumulate different substances, which is why some are considered to be difficult to degrade, making benthic habitats a source of secondary contamination in the ecosystem. Thus, most of the places that presented sediments at the bottom of the river are found in areas with greater population and structural density.…”

Section: Rapid Protocol For Environmental Assessment (Rpea)mentioning

confidence: 99%

“…The other points are in places without the presence of riparian vegetation, in both P7 (Ouricuri river) and P12 (tributary). The inexistence of this natural barrier allows the transport of all types of sediment, including solid waste to the micro-watershed bed and its tributaries, as emphasized by Bassooma et al, (2021).…”

Section: Idw Interpolation Versus Rpeamentioning

confidence: 99%

Integration of environmental assessment models: A study of the impact on urban micro-watersheds in the Amazon-Brazil

Sousa

Miranda

Pereira

et al. 2022

Rev. Bras. Geog. Fis.

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The micro-watershed of the Ouricuri river stands out for serving a large portion of the local population, however, the lack of sanitation, construction in permanent preservation areas, the release of effluents, and other highimpact activities influence the maintenance of the local ecosystem. The study aimed to promote the integration of environmental assessment methodologies such as Rapid Protocol for Environmental Assessment (RPEA) and interpolation by the Inverse Distance Weighted (IDW) method to evaluate the impact to which the study area is subject. The integration of techniques enabled to verify that the points P9 and P10 are in anoxic conditions, with values 60% below what is recommended by Resolution N° 357/05 of CONAMA for class 2 water, and the other points varying between high and moderate environmental risk, with emphasis on Points P4 and P5, corresponding to the Ouricuri River, where the situation requires greater attention. The Total Impact in the study area suggests that the Ouricuri microwatershed needs immediate intervention, as in the sections of the Ouricuri River located in the commercial center and its tributaries, which are smaller streams, there is great pressure from the municipal sanitation system and buildings in protected areas, promoting serious changes to the local ecosystem and consequently to people's health.

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“…Contamination by trace metals in the aquatic environment is a worldwide threat due to their abundance, toxicity, persistence and their resultant accumulation in aquatic ecosystems (Benedicto et al, 2011;Guendouzi et al, 2021;Guendouzi et al, 2017;Jović and Stanković, 2014;Marengo et al, 2018;Ternengo et al, 2018). The analysis of trace elements in river waters is motivated by a number of research papers (Basooma et al, 2021;Gaillardet et al, 2003;Viers et al, 2009;Xue et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Occurrence, contamination level and ecological risk assessment of dissolved and particulate trace elements in rivers entering the southwestern Mediterranean Sea

Benhalima

Boulahdid

Guendouzi³

et al. 2022

Marine Pollution Bulletin

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Trace metal concentrations in the abiotic and biotic components of River Rwizi ecosystem in western Uganda, and the risks to human health

Cited by 13 publications

References 55 publications

Spatial Distribution, Potential Risks and Source Identification of Heavy Metals in the Coastal Sediments of the Northern Beibu Gulf, South China Sea

Spatial Distribution, Potential Risks and Source Identification of Heavy Metals in the Coastal Sediments of the Northern Beibu Gulf, South China Sea

Integration of environmental assessment models: A study of the impact on urban micro-watersheds in the Amazon-Brazil

Occurrence, contamination level and ecological risk assessment of dissolved and particulate trace elements in rivers entering the southwestern Mediterranean Sea

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