Geochemical fractionation and bioavailability of heavy metals in the middle gangetic plain: Assessing ecological risks in water and sediment systems

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 964, P. 178564 - 178564

Published: Jan. 21, 2025

Language: Английский

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Use of multispecies (Nannochloropsis oceanica, Artemia franciscana, and Arbacia nigra) approach to assess the quality of marine water from Callao Bay, Peru

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 7, 2025

Multi-species tests in bioassays offer a holistic view of the ecosystem's response to toxicity, as different species display varying sensitivities pollutants. This research aimed assess ability toxicity tests' distinguish contamination levels, examine site-specific effects, and investigate seasonal variability. Using multispecies approach (Nannochloropsis oceanica, Artemia franciscana, Arbacia nigra), evaluated marine water quality from Callao Bay Peru across four sampling areas (Naval School: PA1, Peruvian Marine Institute: PA2, Pier: PA3, San Lorenzo Island: PA4). These species, with sizes morphologies, are relevant systems ideal for testing, contributing broader environmental impact discussions. To conduct bioassays, evaluations were performed fall, winter, spring, summer. Brine shrimp displayed variations values, notable mortality rates during winter. Nannochloropsis oceanica was most sensitive showing moderate seasons. Areas impacted by pollution sources, such wastewater maritime traffic, exhibited highest levels (PA3 fluctuations underscore need consider local conditions when assessing organism sensitivity seawater contaminants. Additionally, they reveal complex interplay between factors, quality, responses ecosystems.

Language: Английский

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Sediment quality evaluation in a strategic port zone: application of Artemia franciscana and Emerita analoga in Callao Bay, Peru

Regional Studies in Marine Science, Journal Year: 2025, Volume and Issue: unknown, P. 104039 - 104039

Published: Jan. 1, 2025

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Biomonitoring of Waters and Tambacu (Colossoma macropomum × Piaractus mesopotamicus) from the Amazônia Legal, Brazil

Water, Journal Year: 2024, Volume and Issue: 16(18), P. 2588 - 2588

Published: Sept. 12, 2024

Fish farming is increasingly important globally and nationally, playing a crucial role in fish production for human consumption. Monitoring microbiological chemical contaminants from water discharge essential to mitigate the risk of contaminating This study analyzes physicochemical E. coli parameters tambacu muscles (Colossoma macropomum × Piaractus mesopotamicus) Western Maranhão, Brazil. It also includes qualitative characterization zooplankton ponds. Samples were collected ponds dam system fed by natural watercourses Tocantins River tributaries, located at connection Brazilian savanna Amazon biomes. The did not meet national standards. community included Rotifera, Cladocera, Copepoda, Protozoa representatives, with no prior studies on region, making these findings unprecedented. biological quality freshwater farming, as poor can lead decreased productivity mortality, raising significant food safety concerns. studied related potential influence untreated wastewater source contamination, leaving region still far safe reuse practices. contamination waters concern health emphasize need appropriate regulations.

Language: Английский

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Sediments of Hydropower Plant Water Reservoirs Contaminated with Potentially Toxic Elements as Indicators of Environmental Risk for River Basins

Water, Journal Year: 2024, Volume and Issue: 16(19), P. 2733 - 2733

Published: Sept. 26, 2024

The aim of this work was to determine the concentrations, distribution, and fate potentially toxic elements [lead (Pb), zinc (Zn), nickel (Ni), copper (Cu), mercury (Hg), arsenic (As), cadmium (Cd)] in sediments a hydropower plant water reservoir located Brazilian Cerrado biome (used as system model). purpose study achieved with an analysis level contamination based on geoaccumulation index (Igeo) factor (FC) comparisons values established by environmental legislation. physical–chemical–biological properties sediment samples, (PTEs) basin stream studied were also investigated using Pearson’s correlation coefficient (r) principal component (PCA). Cu, Hg, Cd concentrations samples from most points analyzed above II categorization stipulated legislation, characterizing poor quality. Moreover, Igeo FC indicated potential pollution Cd. Concentrations exceeding 0.34 mg kg−1 surpassed reference for quality Conama Resolution No. 454/2012, highlighting urgent need ongoing monitoring strategies. Hence, classified being moderately extremely polluted due metals samples. Frequent watersheds plants is indispensable assessment resources, considering importance supply power generation population. contaminated PTEs poses risks river basins, well human animal health. results can assist investigation other reservoirs around world.

Language: Английский

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Sustainable Adsorbent: Activated Carbon From Waste Styrofoam for Efficient Aluminum Removal

Microscopy Research and Technique, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 11, 2024

This paper reports on batch investigations utilizing activated carbon (AC) made from waste Styrofoam to adsorb aluminum (Al

Language: Английский

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