ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
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2025
·
IF 2.8
Shi Si,Zhang Zijie,Wang Rong,Xue Shiji,Fei Wanyu,Peng Yue’e
In this study, a detailed analysis of 20 per- and polyfluoroalkyl substances (PFAS), including 13 perfluorocarboxylic acids (PFCAs) (C4–C18), four perfluorosulfonic acids (PFSAs) (C4, C6, C8, C10), and three polyfluoroalkyl substances, in different environmental media of Fu River, which was the main sewage storage body, and located near the Tianhe Airport in Wuhan, China. In the surface water samples, short-chain PFAS, perfluorobutanesulfonic acid (PFBS) and perfluorobutanoic acid (PFBA) were the most prevalent, and highest concentrations of 168 ng/L and 49.7 ng/L, respectively. However, in the sediment samples, PFBS and perfluorooctane sulfonate (PFOS) were the most prevalent, and highest concentrations of 840 ng/kg and 1510 ng/kg, respectively. Meanwhile, PFOS was the most prevalent substance, with the highest concentrations measured at 23.3 μg/kg in egg yolk and 28.1 μg/kg in fish, accounting for proportions of 82% and 88%, respectively. Two new short-chain substitutes of PFOS, 6:2 clorinated polyfluoroalykyl ether sulfonate (6:2 Cl-PFESA) and 8:2 clorinated polyfluoroalykyl ether sulfonate (8:2 Cl-PFESA), emerged in sediment and fish. The PFAS in eggs, fish, and vegetables of Fu River Basin poses a potential health risk to residents according to the suggested value of the European Food Safety Agency.
研究领域:
环境科学
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毒理学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
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2025
·
IF 7.3
Xinyue Zhao,Siyu Liu,Lina Wang,Li Yang,Jun He,Chengjun Wang
A gas chromatography-flame ionization detection method was developed to investigate the occurrence and transformations of phthalate esters (PAEs) in atmospheric aqueous aerosol in Wuhan City. Six of PAEs were detected in collected aerosol samples and their concentrations in atmosphere were followed the order of diallyl phthalate (0.244 μg m −3 ) > diethyl phthalate (0.235 μg m −3 ) > di(2-ethylhexyl) phthalate (0.176 μg m −3 ) > dimethyl phthalate (0.110 μg m −3 ) > di-n-octyl phthalate (0.081 μg m −3 ) > dipropyl phthalate (0.024 μg m −3 ). The Redundancy analysis results indicated that, compared to humidity and wind speed, temperature had the most important influence on the occurrence of PAEs in aqueous aerosol. The hydrolysis of selected PAEs in aqueous extracts of aerosol samples was examined under different conditions, determining that hydrolysis of PAEs is most susceptible to the ambient temperature at typical atmospheric aqueous pH of 3–5. In addition, photodegradation results suggested that indirect photodegradation played a key role in photodecomposition of PAEs under sunlight irradiation. The photo-generated reactive species including triplet water-soluble organic matter ( 3 WSOM∗) and reactive oxygen species (ROS) mainly contribute to the degradation of PAEs in atmospheric aqueous aerosol. This study provides an important reference for better understanding the occurrence and transformations of PAEs in ambient urban atmospheric aqueous aerosol.
研究领域:
环境科学
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化学
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DOI
PubMed
高影响因子
ANALYTICAL LETTERS
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2025
·
IF 1.8
Yulin Zhang,Wang Huang,Qiwei Zhang,Xu Zhang,Yanxiang Liu,Xiaoqiu Yang
Pollution from phenolic endocrine-disrupting chemicals (PEDCs) poses a significant challenge to aquatic ecosystems. However, information on their occurrence and risks in Wuhan’s two primary rivers is limited. This study analyzed nine PEDCs and water quality parameters, detecting four: 4-n-nonylphenol (22–109 ng/L), octylphenol (25.9–73.7 ng/L), bisphenol A (93.3–258 ng/L), and bisphenol S (0.42–3.30 ng/L). Concentration differences between March and April suggested rainfall may influence. Pearson’s correlation analysis showed water temperature positively correlated with PEDCs, while atmospheric pressure, dissolved oxygen, and oxidation-reduction potential were negatively correlated. Risk assessment indicated low-to-moderate risks for these PEDCs in the rivers.
研究领域:
环境科学
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生态毒理学
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水污染控制
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DOI
高影响因子
Toxics
·
2024
·Vol. 12
·期 11
·808
·
IF 3.9
Dongmei Yang,Jiale Huang,Fenli Min,Huixian Zhong,Jialu Ling,Qun Kang,Zhaohua Li,Lilian Wen
In this study, samples from the Yangtze River, Han River, and Liangzi Lake in Wuhan City were utilized to characterize the formation of disinfection by-products (DBPs) from chlorine-based disinfection residues in drinking water sources. The results indicated that the main DBPs in drinking water sources were trichloromethane (TCM) and trichloroacetic acid (TCAA). The generation of DBPs was significantly positively correlated with oxidative substances, aromatic compounds, pH, and ammonia nitrogen (NH 3 -N) content in the water. The concentration of TCAA increased from 0 to 2.45 ± 0.31 mg/L when the reaction time increased to 72 h. As the NaClO concentration increased from 5 mg/L to 15 mg/L, the concentrations of TCAA, TBM, and DCAN increased from 2.03 ± 0.04 mg/L, 0 mg/L, and 0 mg/L to 2.49 ± 0.34 mg/L, 0.21 ± 0.07 mg/L, and 0.10 ± 0.04 mg/L before decreasing to 1.75 ± 0.19 mg/L, 0.17 ± 0.07 mg/L, and 0.04 ± 0.05 mg/L, respectively. The orthogonal experimental results showed that Br − , NH 3 -N, and pH all had significant influences on the TCM generation, whereas temperature affected the formation of TCAA in the Han River. This work reveals the factors influencing the generation of DBPs from chlorine-based disinfection residues, offering a prevention and control method for DBPs in drinking water sources from a theoretical perspective.
研究领域:
环境科学
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水处理
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公共卫生
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化学工程
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）