Bioassay: A useful tool for evaluating reclaimed water safety

Xu, Jiang; Wei, Dongbin; Wang, Feipeng; Bai, Chenzhong; Du, Yuguo

doi:10.1016/j.jes.2019.08.014

Cited by 34 publications

(17 citation statements)

References 77 publications

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“…Advanced partial oxidation can generate several by-products that are combined in a complex mixture, which can cause toxic effects at different ecotoxicological levels. Hence the importance of associating analytical control with acute and chronic toxicity bioassays in addition to investigating the effects on biomarkers (Neale et al 2017 ; Ghosh et al 2017 ; Utzig et al 2019 ; Xu et al 2020 ).…”

Section: Resultsmentioning

confidence: 99%

Ecotoxicity and genotoxicity assessment of losartan after UV/H2O2 and UVC/photolysis treatments

Adams

Neves

Prola

et al. 2020

Environ Sci Pollut Res

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Losartan potassium (LOS) is one of the most antihypertensives used in the world, and its presence in environmental matrices can cause impacts to biota. In this study, the ecotoxicity and genotoxicity of LOS was assessed before and after treatment by UVC/photolysis and UV/H 2 O 2 . The photodegradations were carried out at LOS solutions (2.5 mg L −1 ; 4.6 μM) for 30, 60, 90, 120, 240, and 480 min of treatment. For chromatographic analysis, the samples were submitted to solid-phase extraction (SPE) and analyzed by HPLC-DAD. Ecotoxicity bioassays were conducted using Daphnia magna (acute) and Desmodesmus subspicatus (chronic) for all the degradation times. To evaluate the genotoxicity, the comet assay was performed with a D. magna whole organism cell suspension applying the alkaline gel electrophoresis technique. For both process, the degradation rate was over 99% at 30 min, which reduced the acute toxicity of LOS to D. magna . In addition, only the sample treated at 240 min by UV/H 2 O 2 showed significant chronic and acute toxicity. However, the genotoxicity effect was observed for samples treated LOS before treatment and at 480 min by UV/H 2 O 2 . Therefore, even reaching high LOS degradation rates, for both processes, the bioassays demonstrated the importance of ecotoxicological analyses by AOPs treatment. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-020-11420-9.

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Section: Resultsmentioning

confidence: 99%

Ecotoxicity and genotoxicity assessment of losartan after UV/H2O2 and UVC/photolysis treatments

Adams

Neves

Prola

et al. 2020

Environ Sci Pollut Res

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“…The bioassay was a useful way to measure the safety level of all contaminant components in pollutants [ 34 ]. The D. magna is commonly employed as a model organism given that it is a common member of aquatic invertebrate communities.…”

Section: Discussionmentioning

confidence: 99%

The Physiological and Biochemical Responses of Daphnia magna to Dewatered Drinking Water Treatment Residue

Yuan

Pei

Bao

et al. 2020

IJERPH

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There have been widespread attempts to recycle drinking water treatment residue (DWTR) after dewatering for environmental remediation, which is beneficial for both the environment and the economy. The directly discharged DWTR without dewatering to natural water bodies, however, was reported to show signs of chronic toxicity to Daphnia magna (D. magna), a typical zooplankton in the aquatic environment. This study comprehensively assessed the effect of dewatered DWTR on the physiological and biochemical characteristics of D. magna based on acute and chronic toxicity tests. The results showed that the survival, growth, reproduction, body morphology of offspring, and the antioxidant enzymes of D. magna were not affected by the dewatered DWTR. These physiological and biochemical indexes also had no undesirable changes for the DWTR-amended sediments (with ratios of 0–50%) incubated for 10 and 180 d; the growth and reproduction were even promoted when D. magna was exposed to 5000 mg-sediment L−1, which may be due to the extra nutrients supplied by the amended sediments for the animals. The results demonstrated that by contrast with the directly discharged DWTR without dewatering, the dewatered DWTR could be safe to D. magna. Further analysis suggested that heavy metals (Pb, Ni, Cu, Cr, and Zn) with relatively low concentrations and high stability could be the main reasons leading to the high safety of the dewatered DWTR. Overall, dewatered DWTR can be considered a non-hazardous material for zooplankton.

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“…Particular complications arise in the case of complex technogenic pollution. Namely, it is most often the case [1].…”

Section: Introductionmentioning

confidence: 99%

Methodological approaches to assessing the toxicity of compounds by changing the behavioral response of soil oligochaetes

Стом

Gelman

Антонова

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The methodological aspects of assessing the toxicity of surface-active substances (SAS) by changing the behavioral response of avoiding the substrate by earthworms Eisenia fetida andrei Bouche, 1972 were studied. The conditions for biotesting were selected, under which the method is more sensitive to the tested pollutants. In this method, 30 worms. placed in a Petri dish with a substrate unfavorable for worms (dry sand). Around it, Petri dishes with test samples of moistened sand contaminated with individual toxicants in various concentrations and their mixtures were placed radially. A control sample (wet sand) was also placed among the prototypes. When the worms selected the most favorable of the tested contaminated substrate samples, their movement from dry sand was observed. After 4 h from the start of the experiment, the number of worms in each of the compartments was counted. The toxic effect of the cationic surfactant cetyltrimethylammonium bromide (CTAB) was manifested when its content in the soil sample was from 0.001 g / kg; nonionic surfactant Tween-80 – from 1 ml / kg; anionic surfactant sodium lauryl sulfate – from 20 mg / kg.

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Bioassay: A useful tool for evaluating reclaimed water safety

Cited by 34 publications

References 77 publications

Ecotoxicity and genotoxicity assessment of losartan after UV/H2O2 and UVC/photolysis treatments

Ecotoxicity and genotoxicity assessment of losartan after UV/H2O2 and UVC/photolysis treatments

The Physiological and Biochemical Responses of Daphnia magna to Dewatered Drinking Water Treatment Residue

Methodological approaches to assessing the toxicity of compounds by changing the behavioral response of soil oligochaetes

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