RETRACTED: Temporal Variations of Polycyclic Aromatic Hydrocarbons in the Seawater at Tsukumo Bay, Noto Peninsula, Japan, during 2014–2018

Matsunaka, Tetsuya; Nagao, Seiya; Inoue, Mutsuo; Mundo, Rodrigo; Tang, Ning; Suzuki, Nobuo; Ogiso, Satoshi; Hayakawa, Kazuichi

doi:10.3390/ijerph17030873

Cited by 7 publications

(5 citation statements)

References 33 publications

(59 reference statements)

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“…These fish were kept in one aquarium per respective treatment for 10 days at 26 • C under a 12 h light/12 h dark cycle while adding a small amount of natural seawater. The amount of PAHs in the seawater used in the present study was less than 2 pg/mL [19]. The values of pH and the salinity of the seawater were stable at around 8.25-8.35 and 33.0-33.5 practical salinity units, respectively.…”

Section: Effects Of Baa On Plasma Ca and Pi Levels In Nibbler Fishmentioning

confidence: 66%

Influence of Benz[a]anthracene on Bone Metabolism and on Liver Metabolism in Nibbler Fish, Girella punctata

Zanaty

Sawada

Kitani

et al. 2020

IJERPH

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It has been reported that spinal deformity was induced in developing fish by the addition of polycyclic aromatic hydrocarbons (PAHs). To examine the mechanism of the disruption of fish bone metabolism, the effect of benz[a]anthracene (BaA), a kind of PAH, on plasma calcium, inorganic phosphorus, osteoblasts, and osteoclasts was investigated in this study. We also measured several plasma components to analyze the toxicity of BaA on other metabolisms. BaA (1 or 10 ng/g body weight) was intraperitoneally injected (four times) into nibbler fish during breeding, for 10 days, and it was indicated, for the first time, that injecting high doses of BaA to nibbler fish induced both hypocalcemia and hypophosphatemia. Furthermore, in the scales of nibbler fish treated with high doses of BaA, both osteoclastic and osteoblastic marker messengerRNA (mRNA) expressions decreased. These results are a cause of disruption of bone metabolism and, perhaps, the induction of spinal deformities. In addition, we found that total protein, metabolic enzymes in the liver, total cholesterol, free cholesterol, and high-density lipoprotein cholesterol levels significantly decreased in BaA-injected fish. These results indicate that BaA may affect liver diseases and emphasize the importance of prevention of aquatic PAH pollution.

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Section: Effects Of Baa On Plasma Ca and Pi Levels In Nibbler Fishmentioning

confidence: 66%

Influence of Benz[a]anthracene on Bone Metabolism and on Liver Metabolism in Nibbler Fish, Girella punctata

Zanaty

Sawada

Kitani

et al. 2020

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“…It was worth noting that although some data were collected ten years ago, they still demonstrated certain representativeness to current conditions. This is because PAH concentrations have shown only slight variations in various seawater samples over the past ten years. − …”

Section: Methodsmentioning

confidence: 99%

Ocean Stratification Impacts on Dissolved Polycyclic Aromatic Hydrocarbons (PAHs): From Global Observation to Deep Learning

Liu,

Zheng,

Cai

et al. 2023

Environ. Sci. Technol.

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Ocean stratification plays a crucial role in many biogeochemical processes of dissolved matter, but our understanding of its impact on widespread organic pollutants, such as polycyclic aromatic hydrocarbons (PAHs), remains limited. By analyzing dissolved PAHs collected from global oceans and marginal seas, we found different patterns in vertical distributions of PAHs in relation to ocean primary productivity and stratification index. Notably, a significant positive logarithmic relationship (R 2 = 0.50, p < 0.05) was observed between the stratification index and the PAH stock. To further investigate the impact of ocean stratification on PAHs, we developed a deep learning neural network model. This model incorporated input variables determining the state of the seawater or the stock of PAHs. The modeled PAH stocks displayed substantial agreement with the observed values (R 2 ≥ 0.92), suggesting that intensified stratification could prompt the accumulation of PAHs in the water column. Given the amplified effect of global warming, it is imperative to give more attention to increased ocean stratification and its impact on the environmental fate of organic pollutants.

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“…Water was adjusted in the beaker every 24 h due to evaporative loss. We withdrew samples from the beaker for analysis at days 0, 1, 3, 7, and 10, and then filtered through a 0.3 μm glass fiber filter (Advantec, GF-75, preheated at 500 °C for 6 h). , The filtrate was collected for DOC analysis using a Shimadzu TOC-VCSH analyzer (Text S2). The aged charcoal was collected at day 10, washed with 300 mL of DI water, and then dried in an oven at 60 °C overnight for further characterization.…”

Section: Methodsmentioning

confidence: 99%

Rapid Simulation of Decade-Scale Charcoal Aging in Soil: Changes in Physicochemical Properties and Their Environmental Implications

Chen

Gao

et al. 2022

Environ. Sci. Technol.

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In situ aging can change biochar properties, influencing their ecosystem benefits or risks over time. However, there is a lack of field verification of laboratory methods that attempt simulation of long-term natural aging of biochar. We exploited a decade-scale natural charcoal (a proxy for biochar) aging event to determine which lab-aging methods best mimicked field aging. We oxidized charcoal by ultraviolet A radiation (UVA), H 2 O 2 , or monochloramine (NH 2 Cl), and compared it to 10-year field-aged charcoal. We considered seven selected charcoal properties related to surface chemistry and organic matter release, and found that oxidation with 30% H 2 O 2 most representatively simulated 10-year field aging for six out of seven properties. UVA aging failed to approximate oxidation levels while showing a distinctive dissolved organic carbon (DOC) release pattern. NH 2 Cl-aged charcoal was the most different, showing an increased persistent free radical (PFR) concentration and lower hydrophilicity. All lab oxidation techniques overpredicted polycyclic aromatic hydrocarbon release. The O/C ratio was well-correlated with DOC release, PFR concentration, surface charge, and charcoal pH, indicating the possibility to accurately predict biochar aging with a reduced suite of physicochemical properties. Overall, our rapid and verified lab-aging methods facilitate research toward derisking and enhancing long-term benefits of biochar application.

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RETRACTED: Temporal Variations of Polycyclic Aromatic Hydrocarbons in the Seawater at Tsukumo Bay, Noto Peninsula, Japan, during 2014–2018

Cited by 7 publications

References 33 publications

Influence of Benz[a]anthracene on Bone Metabolism and on Liver Metabolism in Nibbler Fish, Girella punctata

Influence of Benz[a]anthracene on Bone Metabolism and on Liver Metabolism in Nibbler Fish, Girella punctata

Ocean Stratification Impacts on Dissolved Polycyclic Aromatic Hydrocarbons (PAHs): From Global Observation to Deep Learning

Rapid Simulation of Decade-Scale Charcoal Aging in Soil: Changes in Physicochemical Properties and Their Environmental Implications

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