Evaluation of genotoxicity potential of household effluents from onsite wastewater treatment systems using <i>umu</i> test

Bai, Wenzhi; Takao, Yuji; Kubo, Takashi

doi:10.1080/15287394.2020.1719447

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…The slope of the regression line was defined as genotoxicity. To correct for variations in the test sensitivity, genotoxicity was divided by the results of the positive control tests and represented as positive control equivalents, as previously reported [67,68].…”

Section: Umu Testmentioning

confidence: 99%

Seasonal Fluctuation of Polycyclic Aromatic Hydrocarbons and Aerosol Genotoxicity in Long-Range Transported Air Mass Observed at the Western End of Japan

Kubo

Bai

Nagae

et al. 2020

IJERPH

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In order to clarify the level transboundary air pollution caused by polycyclic aromatic hydrocarbons (PAHs) and genotoxic substances, aerosols were collected from forest and suburban sites in Nagasaki, west Japan, for 6 years. The PAH concentration was measured, and the genotoxicity of the substances were evaluated using the umu test. The results showed no notable trends in the concentration or toxicity of either sites throughout the study period. The suburban and forest sites shared similar seasonal fluctuation patterns and quantitative values, suggesting that the western end of Japan might be affected by long-range transported pollutants, especially in winter. PAH concentration and genotoxicity showed the same seasonal patterns of increased levels in winter and lower levels in summer. This suggests that PAHs and genotoxic substances were correlated and share common sources. Back trajectory and source analyses were conducted using the diagnostic ratios of PAHs. It was predicted that air pollution by PAHs at the forest site arise predominantly as a result of biomass or coal combustion in continental regions, such as northern parts of China and the Korean Peninsula. This is particularly expected in winter. Therefore, genotoxic substances would also be strongly influenced by transboundary pollution from the continental region. In addition, it was estimated that the contribution of transboundary PAH pollution could reach 70% at the suburban site in winter.

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Section: Umu Testmentioning

confidence: 99%

Seasonal Fluctuation of Polycyclic Aromatic Hydrocarbons and Aerosol Genotoxicity in Long-Range Transported Air Mass Observed at the Western End of Japan

Kubo

Bai

Nagae

et al. 2020

IJERPH

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“…The effluents produced by STPs are a significant source of many contaminants, including pesticides [ 3 ], microplastics [ 4 ], heavy metals [ 5 ], and pharmaceutical residues [ 6 , 7 ], that can have severe impacts on both the environmental and human health. The effective removal of these contaminants during the treatment of sewage is a significant concern, worldwide, and a major driver of research on new treatment technologies [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…As STPs are required to operate within the parameters established by the local legislation on water quality, these tests are widely used to determine efficiency of the treatment for the removal of genotoxic agents at each stage of the process until the release of the effluents into bodies of water [ 44 , 71 ]. These tests are also applied in studies of new sewage treatment technologies [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Multi-taxon trends and the application of genotoxic biomarkers in the analysis of effluents from sewage treatment plant

Freitas,

Benvindo-Souza,

Vieira

et al. 2023

Heliyon

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First evaluation of genotoxicity of strong bases and zwitterions in treated household effluents

Bai

Takao

Kubo

2021

Journal of Hazardous Materials

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Evaluation of genotoxicity potential of household effluents from onsite wastewater treatment systems using umu test

Cited by 5 publications

References 24 publications

Seasonal Fluctuation of Polycyclic Aromatic Hydrocarbons and Aerosol Genotoxicity in Long-Range Transported Air Mass Observed at the Western End of Japan

Seasonal Fluctuation of Polycyclic Aromatic Hydrocarbons and Aerosol Genotoxicity in Long-Range Transported Air Mass Observed at the Western End of Japan

Multi-taxon trends and the application of genotoxic biomarkers in the analysis of effluents from sewage treatment plant

First evaluation of genotoxicity of strong bases and zwitterions in treated household effluents

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