Polycyclic aromatic hydrocarbons and organochlorine pesticides in surface water from the Yongding River basin, China: Seasonal distribution, source apportionment, and potential risk assessment

Wang, Yizhen; Zhang, Shilu; Cui, Wenyan; Meng, X Z; Tang, Xianqiang

doi:10.1016/j.scitotenv.2017.11.066

Cited by 80 publications

(31 citation statements)

References 97 publications

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“…Up until the present, PAHs have been detected in various environmental samples such as river water [3][4][5], sediment [6][7][8], soil [9][10][11], and airborne particles [12][13][14], which indicates the spread of PAHs pollution. Various environmental emission sources have also been investigated, such as waste Int.…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…This means that their concentrations in some river waters had exceeded the predicted no-effect concentrations. Not only did this pose a threat to aquatic organisms, but also the consumption of aquatic organisms entailed a potential threat to human health due to the bioaccumulation of OCPs [8]. Figure 4 shows the cumulative probability distribution for the ILCR and hazard index (HI) in diverse population groups exposed to OCPs in the river waters of Shanghai.…”

Section: Ecological Risk Assessmentmentioning

confidence: 99%

“…Therefore, the risks caused by these micropollutants to aquatic biota and human health are even more worrying. Up to now, some site-specific studies have given people knowledge of the OCP contamination status for a few hot spot areas [1,7,8], but most regions in China are still lacking in relevant data. In addition, the levels of exposure doses and associated risks remain largely unknown.…”

Section: Introductionmentioning

confidence: 99%

Ecological and health risk assessment of organochlorine pesticides in an urbanized river network of Shanghai, China

et al. 2020

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Background: Organochlorine pesticides (OCPs) are currently still threatening the ecological environment and people's health. However, studies that investigate OCP pollution levels in an urbanized river network of an entire city with a high density of rivers, such as Shanghai, have rarely been reported. In addition, due to the pressure of high population densities, ecological risk and health hazard assessments of OCPs in river networks are a knowledge gap that needs to be urgently filled. Thus, in this study, the concentrations, distribution, and partitioning of OCPs are evaluated in an ecological and health risk assessment for the urbanized river network of Shanghai. The goal is to establish connections among OCP residues and establish their impacts on ecological and human health. Results: The concentrations of 26 OCPs in the urbanized river network of Shanghai ranged from 43.90 to 342.74 ng/L, with a mean value of 181.34 ng/L. Some OCPs formed triangle-shaped areas with higher local ecological risks than other areas, and there were nine OCPs of high risk in some areas. The health risk assessment results showed that the ranking of the incremental lifetime cancer risk (ILCR) for dermal contact according to age and gender was adults > children > seniors > adolescents, and females > males, while the ranking of the ILCR caused by mistaken oral intake was adults > children > adolescents > seniors, and females > males. The non-carcinogenic risk hazard index (HI) values of both exposure routes were less than one. Conclusion: OCP concentrations in the northern and southern regions of Shanghai were significantly higher than in other regions, and the partition coefficient (K p) values of the ∑ 26 OCPs were negatively correlated with the total suspended solids' (TSS) contents (p < 0.01). The ecological risks were relatively higher in agricultural areas. The ILCR for dermal contact and mistaken oral intake were generally low, except for adults, whose ILCR caused by dermal contact were at moderate risk. In addition, OCPs in river waters did not pose significant non-carcinogenic health hazards for a majority of the people.

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“…DCF residues can affect ecosystems adversely, causing serious environmental pollution. More specifically, DCF high toxicity (i.e., carcinogenic, teratogenic, and mutagenic) could cause acute poising of fish and shrimp, endocrine disruptive properties, and chronic toxicity to other organisms [10][11][12][13]. Therefore, it is believed that DCF would exert a negative influence on both animals [14,15] and humans [16].…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of dicofol by Microbacterium sp. D-2 isolated from pesticide-contaminated agricultural soil

Liu

2019

Appl Biol Chem

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Dicofol is an organochlorine insecticide widely used to prevent pests worldwide. Consequently, serious environmental problems have arisen from the application of dicofol. Bioremediation is an effective solution for dicofol persistence in the environment. In this study, a bacterial strain D-2, identified to genus Microbacterium, capable of degrading dicofol was isolated from dicofol-contaminated agricultural soil. This represents the first dicofol degrading bacterium isolated from this genus. Microbacterium sp. D-2 degraded 50 mg/L dicofol within 24 h at a rate of 85.1%. Dicofol was dechlorinated by D-2 and the further degradation metabolite was indentified as p,p′-dichlorobenzophenone(DCBP). Soils inoculated with Microbacterium sp. D-2 degraded 81.9% of the dicofol, while soils without D-2 only degraded 20.5% of the dicofol present. This finding suggests that strain D-2 has great potential in bioremediation of dicofolcontaminated soils.

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Polycyclic aromatic hydrocarbons and organochlorine pesticides in surface water from the Yongding River basin, China: Seasonal distribution, source apportionment, and potential risk assessment

Cited by 80 publications

References 97 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

Ecological and health risk assessment of organochlorine pesticides in an urbanized river network of Shanghai, China

Biodegradation of dicofol by Microbacterium sp. D-2 isolated from pesticide-contaminated agricultural soil

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