Quantitative modelling of Ostracod bioassay: assigning toxicity index to potentially chemical contaminated swimming pools

Onwurah, Arinze Ikechukwu; Oje, Obinna Aru; Okpashi, Victor Eshu; Udebuani, Angela Chika; Ugwu, Chidiebere E; Onwurah, Ikechukwu N. E.

doi:10.1007/s11356-021-17913-5

Cited by 2 publications

(1 citation statement)

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“…Higher plant toxicological experiments (seed germination experiment, root elongation experiment and early seedling growth experiment) are commonly used to detect the toxicity of various environmental contaminants because of their high sensitivity [ 24 , 25 , 26 ], ease of operation and low cost; ostracods are important parts of the aquatic ecosystem and belong to the phylum crustaceans of arthropods [ 27 ]. They are recognized as good environmental indicator organisms around the world and are widely used in toxicity experiments to monitor and evaluate heavy metal pollution on account of several advantages they possess, such as sensitivity to pollutants, large numbers, rich species, wide distribution, low research costs, easy collection and laboratory culture [ 28 , 29 , 30 , 31 ]. Khangarot et al [ 32 ] proposed that it is necessary to include ostracods in biological tests to detect the presence of heavy metal contamination in soil, sludge, sediment and aquatic systems.…”

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confidence: 99%

Study on the Ecotoxic Effects of Uranium and Heavy Metal Elements in Soils of a Uranium Mining Area in Northern Guangdong

Zhang

Tang

Liu³

et al. 2023

Toxics

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To investigate the heavy metal contamination of soil in a uranium mining area in northern Guangdong, a physicochemical evaluation method was used to evaluate the contaminated soil near the pit and tailings pond of the uranium mining area, determine its heavy metal content and evaluate its ecological risk using the Nemerow integrated contamination index, ground accumulation index and potential ecological risk index. The results show that the average content of nine heavy metal elements in the soil of the uranium mining area exceeds the background value of red soil in Guangdong Province. Three pollution evaluation indices all indicate that Cd, As and U have serious pollution and high ecological risk, while the remaining elements are weakly polluted and the potential ecological risk of the six sampling sites all show very strong risk. On this basis, soil ecotoxicity was evaluated using ostracods (Cypridopsis vidua and Heterocypris sp.), Vibrio fischeri and Vicia faba L. Higher concentrations of heavy metals at individual sites (T1, T2, P2) resulted in higher mortality of ostracods, higher inhibition of Vibrio fischeri luminescence and a significant reduction in germination and pigmentation of broad beans. The results of the biotoxicity evaluation were consistent with the results of the physicochemical evaluation, allowing for a more direct and comprehensive evaluation of the ecotoxic effects of uranium and heavy metals in the mine soils.

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