WATER RESEARCH
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2025
·
IF 12.4
Shuning Wang,Cheng Peng,Nan Sheng,Lushi Lian,Jiayin Dai,Xiaohong Guan
Bisphenol analogues (BPs), a prominent group of endocrine-disrupting compounds, are widely used in the production of epoxy resins and polycarbonate plastics, leading to their inevitable release into aquatic environments. However, limited data exists on the occurrence of BPs in drinking water sources and upstream rivers. In this study, we developed and validated a solid-phase extraction method coupled with ultra-performance liquid chromatography-tandem mass spectrometry for the trace-level detection and simultaneous quantification of 19 BPs in surface water. Seventeen BPs were detected in the Taipu River with concentrations ranging from non-detectable to 38.2 ng L –1 and industrial discharges may be a primary source of BPs contamination. For the first time, the presence of bisphenol C-dichloride (BPC-di) and tetrachlorobisphenol A in surface water was reported, with mean concentrations of 11.5 ng L –1 and 2.0 ng L –1 , respectively. In drinking source water, 15 BPs were found, with bisphenol A, bisphenol B, and BPC-di being the most abundant ones. Additionally, a comprehensive toxicity assessment was performed to evaluate the ecological risks associated with these BPs. Although risk quotient values indicated negligible ecological risk for these BPs, estrogen equivalence values suggested potential estrogenic risks in the river. This study provides new insights into the occurrence, ecological risks, and estrogenic effects of BPs in source water and its upstream river systems.
研究领域:
环境科学
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毒理学
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分析化学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Ruihua Zhang,Rong Xiao,Feifei Wang,Wenhai Chu,Jinglong Hu,Yu Zhang,Wei Jin,Jan Peter van der Hoek,Zuxin Xu
The illicit connection of sewage pipes to stormwater pipes commonly occurs in urban stormwater systems. This brings problems that sewage might be directly discharges into natural water and even drinking water sources without treatment, posing risks to ecological safety. Sewage contains various unknown dissolved organic matter (DOM), which could react with disinfectants and lead to the formation of carcinogenic disinfection byproducts (DBPs). Thus, understanding the impacts of illicit connections on downstream water quality is of significance. This study firstly investigated the characteristics of DOM using fluorescence spectroscopy and the formation of DBPs after chlorination in an urban stormwater drainage system in the case of illicit connections. The results found that the concentrations of dissolved organic carbon and dissolved organic nitrogen ranged from 2.6 to 14.9 mg/L and from 1.8 to 12.6 mg/L, respectively, with the highest levels occurring at the illicit connection points. Concerning DBP precursors, pipe illicit connections introduced considerable precursors of highly toxic haloacetaldehydes and haloacetonitriles into the stormwater pipes. Furthermore, illicit connections introduced more contents of tyrosine-like and tryptophan-like aromatic proteins, which may be related to foods, nutrients, personal care products, etc. in the untreated sewage. This indicated that the urban stormwater drainage system was a significant input source of DOM and DBP precursors to natural water. The results of this study are of great significance for protecting the security of water sources and promoting the sustainability of urban water environment.
研究领域:
环境科学
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水文学
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生态学
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DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2025
·
IF 7.8
Gaotian Li,Panpan Li,Jianguo Zhang,Chi Zhao,Yirui Lan,Shuang Zhao
To overcome the low removal efficiency of common flocculants for bacterial pollutants, herein, a series of quaternary phosphine groups (QPGs)–modified chitosan (CTS)-based flocculants (CTS-P) was proposed. The removal efficiency of CTS-P for Escherichia coli ( E. coli ) and other coexisted pollutants was evaluated. The binding mode and interaction mechanism between CTS-P and E. coli were elucidated using theoretical calculations. Results showed that flocculation performance of CTS-P was the most efficient in near-neutral water (pH = 6–8). The removal efficiencies of CTS-P (10 mg/L) for humic acid and E. coli is 71 % and 1.82 1og, respectively, and the removal process was dominated by charge neutralization and adsorption bridging effects. The QPGs increased the charge density of the coagulation system and promoted the formation of large particle flocs. During the collision and growth processes of flocs, E. coli was quickly flocculated onto their surface and encapsulated within them. The binding of the QPGs to the cell membrane leads to E. coli cell death and structural rupture. Theoretical calculations show that the interfacial interaction energy of CTS-P for capturing E. coli is dominated by intermolecular interaction energy and polar interaction energy. The CTS-P flocculant proposed in this study provides a new pharmaceutical product and a theoretical basis for removing bacterial pollutants from drinking water sources.
研究领域:
环境微生物学
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水处理技术
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高分子材料化学
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环境工程
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界面科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Fan Dong,Fan Ge,Xinting Zhao,Daming Sun,Suyu Ren,Yan Wang,Feng Tan
Extensive use of per- and polyfluoroalkyl substances (PFASs) has resulted in their widespread presence in natural waters. Concern for public health requires reliable measurement methods for determining their distribution and risks. Here, a sampling method based on diffusive gradients in thin films (DGT) was developed for measuring PFASs in drinking water sources. Fluorinated graphite (FG) particles were used to prepare the DGT binding gel for selective enrichment of trace PFASs in an aqueous environment. The FG-DGT method did not show sensitivity to relevant environmental parameters including pH (5.0–9.0), ionic strength (0.001–0.5 M), or DOM concentration (0–30 mg/L). The FG-DGT had enough capacity for deployment of up to four months. Six traditional and emerging PFASs including PFOS, PFOA, PFHpA, PFHxS , PFNA, and 6:2 FTSA at the ng/L level were detected in two major reservoirs serving as public drinking water sources by FG-DGT method coupled with liquid chromatography tandem mass spectrometry (LC-MS/MS). PFOA appeared at the highest observed concentrations in the drinking water sources. The research demonstrates that FG-DGT is an effective and efficient tool for monitoring PFASs in drinking water.
研究领域:
环境科学
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分析化学
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水质
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
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2021
·Vol. 40
·期 7
·1917-1925
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IF 3.742
Hongyi Xian,Meilin Tang,Ying Chen,Zhenwei Lian,Yanfeng Li,Xiaowu Peng,Dalin Hu
The present study was conducted to assess the genotoxic potential of water from the Helong Reservoir, which was designated as a strategic drinking water source by the Guangdong Provincial Government of China in October 2016. Four kinds of common indigenous fish samples ( Labeo rohita , Cirrhinus molitorella , red tilapia, and Oreochromis niloticus ) were collected at 6 sampling sites during the period from July to November 2020. Fish from the clean drinking water source of the upper reaches of the Liuxihe Reservoir in Guangzhou were collected as the control. Both the alkaline single cell gel electrophoresis assay and the micronucleus test were used to detect DNA damage and the micronucleus rate in erythrocytes of fish samples, respectively. The results indicated that there was a significant increase in comet tail length, Olive tail moment, and micronucleus rates of all fish samples compared with those of the control ( p < 0.05). The order of sensitivity to DNA damage and micronucleus formation was Labeo rohita > Cirrhinus molitorella > red tilapia > Oreochromis niloticus . The results of the 2 kinds of experiments were in perfect agreement with each other. We conclude that there are obvious genotoxic effects from the water in the Helong Reservoir. As a strategic drinking water source, the safety of the Reservoir water quality should be considered. The local government should put the restoration of the Helong Reservoir water quality on the agenda as soon as possible. Environ Toxicol Chem 2021;40:1917–1925. © 2021 SETAC
研究领域:
环境科学
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毒理学
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水生生物学
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水质管理
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产品关联
DOI
PubMed
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
✓ 已验证
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）