Water SA最新文献

{"title":"Waste Natural Pyrite Activation of Peroxymonosulfate for Degradation of Artificial Sweetener Acesulfame Potassium: Efficiency, Influencing Factors, Degradation Mechanisms, and Toxicity Evaluation","authors":"Chengchen Jiang, Zehong Zeng, Liwen Jiang, Zhi Dang, Xiaohua Shu","doi":"10.3390/w17111558","DOIUrl":"https://doi.org/10.3390/w17111558","url":null,"abstract":"Acesulfame potassium (ACE) is an emerging pollutant with the potential to induce a range of health hazards. In this study, waste natural pyrite (with some oxides on its surface) was washed and used as an activator to activate potassium peroxomonosulfate (PMS) to degrade ACE in water. The experimental results demonstrate that waste natural pyrite with an oxidized layer exhibited a significant degradation effect on ACE. Under conditions of 0.7 g/L pyrite and 60 μM PMS, a degradation rate of 99.3% for ACE was achieved within 15 min, and the mineralization rate reached 15.3% within 30 min. In addition, concerning its applicability, waste natural pyrite demonstrates strong activation ability within a pH range of 3 to 7. It is important to note that while HCO3− and Ca2+ can influence the effectiveness, other common anions and cations do not significantly affect the degradation process. Mechanistic studies reveal that the primary active species in the waste natural pyrite/PMS system were sulfate radicals (SO4•−) as well as hydroxyl radicals (•OH), which contributed 50.6% and 36.9%, respectively. In addition, the analysis of ACE degradation products indicates that no highly toxic intermediates were generated during the degradation process. Overall, this study underscores the outstanding performance of waste natural pyrite as an activator, providing a safe, efficient, and cost-effective approach for degrading organic pollutants like ACE.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 11","pages":"1558-1558"},"PeriodicalIF":0.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147904686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic Degradation of Trichloroethylene Under Different Environmental Conditions: Kinetics and Carbon Isotope Effects","authors":"Yufeng Wang, Yaqiong Dong, Lantian Xing, Ying Guan, Changjie Liu","doi":"10.3390/w17101533","DOIUrl":"https://doi.org/10.3390/w17101533","url":null,"abstract":"Photocatalytic degradation technology is an important tool for treating trichloroethylene (TCE) pollution in water bodies. While previous studies have focused on catalyst optimization and degradation kinetics for trichloroethylene (TCE) photocatalysis, the systematic impact of environmental conditions on carbon isotope effects (ε) and their mechanistic implications remains poorly understood. This limits the reliability of quantitative isotope analyses in field applications. We conducted a series of laboratory experiments on the photocatalytic degradation of TCE to investigate the kinetic and isotopic effects under different conditions. Increasing the concentration of TCE, anions (NO3− and HCO3−), and cations (Mg2+ and Ca2+) decreased the photocatalytic degradation of TCE. O2 will increase the degradation efficiency of TCE. The dose required to achieve maximum photocatalytic efficiency varies for different types of catalysts, which needs to be determined on a case-by-case basis. TCE photocatalytic degradation had a small carbon isotope effect (ε = −2.0 ± 0.2‰ to −3.2 ± 0.5‰), which was slightly affected by the catalyst dosage and species (TiO2 and ZnO), and concentrations of TCE, O2, and inorganic ions (NO3−, HCO3−, Mg2+, and Ca2+). The ε values are stable and reproducible and relatively insensitive to our selected environmental factors in this study, which can reduce the uncertainty of applying stable carbon isotope enrichment factors to quantify the photocatalytic reaction for remediation of TCE contaminated sites.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 10","pages":"1533-1533"},"PeriodicalIF":0.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/10/1533/pdf?version=1747732431","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Human Activities on Antibiotic Resistance Genes and Microbial Diversity in Lake Sediments","authors":"Rui Wang, Min Li, Haiying Li, Xianyu Yin, Hanlu Zhang, Hongmei Wang, Chengshi Ding, Qing Chen","doi":"10.3390/w17101523","DOIUrl":"https://doi.org/10.3390/w17101523","url":null,"abstract":"Human activities are the main sources of antibiotic-resistant genes (ARGs) and mobile genetic elements (MGEs) in the ecosystems of lakes. This research analyzed the abundance of four ARGs (sulI, tetX, cmlA, and aac(6′)-Ib-cr) and one MGE (intI) in sediments from the typical urban and aquacultural polluted areas in Nansi Lake, and further evaluated the risk factors affecting the distribution and occurrence of ARGs. We used 16S rRNA high-throughput sequencing to elucidate the relationship between microbial diversity and ARGs while identifying the possible hosts and sources of ARGs. The results indicated that all five ARGs and MGEs were found in the sampling areas. The abundance of ARGs varied significantly, ranging from 1.29 × 10−6 to 5.59 × 10−4 (copies per 16S rRNA), and the abundance of MGEs was 3.44 × 10−6 to 4.30 × 10−5 (copies per 16S rRNA). The values were relatively higher in the human urban and aquacultural polluted areas than in the pristine environment with minimal nutrient pollution. ARGs exhibited significant correlations with some environmental factors, indicating that environmental factors, such as NH4+-N, total organic carbon (TOC), polystyrene (PS), polyethylene (PE), and polyvinyl chloride (PVC), played crucial roles in the proliferation of ARGs. A network analysis showed that Thermoanaerobaculum, Desulfatiglans, Ignavibacterium, Vibrio, and Spirochaeta were significantly associated with ARGs and MEGs. Meanwhile, these bacterial groups were likely hosts for ARGs and MGEs in the sediments of Nansi Lake. These results underscored the various effects of human activities on the dissemination of ARGs and the composition of microbial communities.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 10","pages":"1523-1523"},"PeriodicalIF":0.0,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/10/1523/pdf?version=1747559318","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Method for Calculating the Roughness Coefficient of Salt Marsh Vegetation Based on Field Flow Observation","authors":"Haifeng Cheng, Fengfeng Gu, Leihua Zhao, Wei Zhang, Yin Zuo, Yuanye Wang","doi":"10.3390/w17101490","DOIUrl":"https://doi.org/10.3390/w17101490","url":null,"abstract":"Salt marsh vegetation significantly changes water motion and sediment transport in coastal wetlands, which further influences the geomorphological evolution of coastal wetlands. Accurate determination of the vegetation drag coefficient (Manning’s roughness coefficient) is critical to vegetation flow resistance research. Previous studies on the vegetation roughness coefficient mainly conducted flume experiments under the one-dimensional steady flow condition, which could not reflect the two-dimensional unsteady flow condition in salt marsh vegetated zones. Through theoretical formula analysis and synchronized field observations in a salt marsh vegetated zone, we propose a novel method for calculating the roughness coefficient of salt marsh vegetation especially under the two-dimensional unsteady flow condition. The results indicate that the vegetation roughness coefficient under the two-dimensional unsteady flow condition can be obtained by integrating the flow resistance equation with the discretized momentum conservation equation. Then, in combination with field observation data, the temporal variations in the vegetation roughness coefficient can be derived. The salt marsh vegetated zone in the Jiuduansha Wetland is dominated by flooding currents, and ebbing currents are of secondary importance. The flow resistance of vegetation on flooding and ebbing currents is remarkable. Moreover, the roughness coefficient shows an inverse power-law relationship with the product of flow velocity and water depth (i.e., Ufhf) at the control volume center. Under the same Ufhf scenario, due to the increase in the water-facing area of vegetation, the roughness coefficient during the submerged period is generally greater than that during the non-submerged period. The calculated roughness coefficients and their relationships with Ufhf are consistent with those shown in previous flume experiments, indicating that our proposed method is reasonable. This new method could help determine vegetation flow resistance accurately (particularly under the two-dimensional unsteady flow condition), and it may provide implications for eco-geomorphological simulations of coastal wetlands.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 10","pages":"1490-1490"},"PeriodicalIF":0.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/10/1490/pdf?version=1747315329","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Fate and Clogging Mechanisms of Suspended Particles in Natural Biofilm-Coated Porous Media","authors":"Huan Wang, Junjie Wu, Dengbo Yang, Yudao Chen, Yuan Xia","doi":"10.3390/w17101480","DOIUrl":"https://doi.org/10.3390/w17101480","url":null,"abstract":"Managed aquifer recharge (MAR) is widely used globally. However, clogging events remain a major obstacle to long-term operations. This study investigated the effects of natural biofilms on the migration and deposition of suspended particles (SPs) at varying concentrations using column experiments and multiple analytical methods. At 74 h, the K′ in the high-concentration group (HT) with biofilm coating decreased by 77.3%, while, in the high-concentration group (HTCK) without biofilm coating, the K′ decreased by 68.5%. Within the same recharge time, the K′ in the medium-concentration group without biofilm coating decreased by 59.9%. The results show that the biofilm covering the porous medium promotes the clogging of suspended particles. Compared with the high-concentration group, the development of porous medium blockage was slower in the low-concentration suspended particle group. SEM and CT analyses revealed that the biofilms altered the surface roughness of the porous media, thereby promoting SP deposition. The study also confirmed that the interactions between SPs and biofilms in recharge water, including electrostatic interactions, hydrophobic interactions, and extracellular polymer flocculation, collectively exacerbated the clogging process in MAR. XDLVO analysis indicated that the biofilm-coated porous media reduced the electrostatic interaction potential energy and energy barrier between SPs and quartz sand, thereby facilitating kaolin deposition in saturated porous media. Correlation and significance analyses identified hydrophobic interactions as the primary mechanism driving SP–biofilm combined with clogging. Moreover, the reduced SP concentrations in the recharge water increased the SP migration distance in porous media, slowing the clogging progression in low-SP groups. These findings offer valuable insights into the prevention and management of MAR clogging caused by the coexistence of biofilms and SPs.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 10","pages":"1480-1480"},"PeriodicalIF":0.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/10/1480/pdf?version=1747223564","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147903693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Removal of Ibuprofen via the O3/H2O2 Oxidation System: Performance, Degradation Mechanism, and Toxicity Evaluation","authors":"Langning Li, Lele Fang, Jimin Shen, Binyuan Wang, Lei Yuan, Yuanqing Guo","doi":"10.3390/w17101414","DOIUrl":"https://doi.org/10.3390/w17101414","url":null,"abstract":"Ibuprofen (IBF), as a representative emerging contaminant, poses urgent environmental and ecological risks that demand efficient removal technologies. This study employed an O3/H2O2 catalytic oxidation process to degrade IBF in aqueous systems and systematically investigated the effects of reactant ratios, pH, and reactive species on the degradation efficiency. The results demonstrated that O3-dominated oxidation significantly outperformed H2O2 alone in IBF removal, with an optimal dosage ratio of c(O3):c (H2O2) = 6:1 and a removal efficiency of 94.75% at pH > 7. Radical quenching experiments confirmed that •OH served as the dominant reactive species, the concentration and stability of which directly governed the degradation kinetics. Combined density functional theory (DFT) calculations and mass spectrometry analysis revealed that the benzene ring and carboxyl groups in IBF were vulnerable to radical attack, with degradation pathways involving hydroxylation, decarboxylation, and ring-opening reactions, yielding 13 intermediate products. The toxicity assessment indicated that over 70% of these intermediates exhibited low or negligible toxicity. Remarkably, IBF removal efficiencies exceeded 99.4% in real water matrices (raw, filtered, and finished water), validating the robust anti-interference capability of the O3/H2O2 system. This process, characterized by high efficiency and low ecological risk, provides a feasible solution for eliminating trace emerging contaminants in advanced drinking water treatment.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 10","pages":"1414-1414"},"PeriodicalIF":0.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/10/1414/pdf?version=1746705207","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insight on the Ultrafast Water Treatment over NiFe-Layered Double Hydroxides via Electroactivation of Ferrate(VI): The Role of Spin State Regulation","authors":"Xinyu Gai, Ningxuan Xue, Pengxiang Qiu, Yiyang Chen, 大介 伊藤, Zhi‐Hui Zhang, Fengling Liu, Zhong‐Yi Liu, Zhaobing Guo","doi":"10.3390/w17091369","DOIUrl":"https://doi.org/10.3390/w17091369","url":null,"abstract":"Ferrate (Fe(VI)), an emerging green oxidant and disinfectant in water treatment, faces challenges due to its limited reaction efficiency stemming from a highly electron-deficient state. To address this, we designed NiFe-Layered Double Hydroxides (NiFe-LDHs) with different spin states to enhance electron transfer efficiency in Fe(VI)-mediated advanced oxidation processes (AOPs). We hypothesized that fine-tuning the spin state of NiFe-LDHs could optimize the balance between adsorption capabilities and electronic structure regulation. Our experiments revealed that intermediate-spin NiFeLDH-1, with a magnetic moment of 0.67 μB, exhibited the best catalytic performance, achieving 100% phenol removal. The NiFeLDH-x/Fe(VI) system demonstrated a significant synergistic enhancement in degradation efficiency. In addition, NiFeLDH-1 showed excellent performance in stability and continuous flow experiments. This study unveils a novel correlation between spin polarization and catalytic efficiency, offering insights into the optimization of electrocatalysts for Fe(VI)-mediated AOPs. The findings suggest that spin state modulation is a promising strategy to enhance the electrocatalytic activity and stability of non-noble metal catalysts.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 9","pages":"1369-1369"},"PeriodicalIF":0.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/9/1369/pdf?version=1746091743","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing Recyclable Magnetic TiO2-Fe3O4 Loading on Carbon Microtube Photocatalyst for Efficient Photodegradation of Microcystin-LR Under Visible Light","authors":"Xinyi Zhang, Tian Xia, Ying Meng, Jiaxi Zhang, Gaofeng Chen, Zheng Ji, Wenli Qin","doi":"10.3390/w17091342","DOIUrl":"https://doi.org/10.3390/w17091342","url":null,"abstract":"Microcystins (MCs) are produced by cyanobacteria blooms in eutrophic water and can cause acute and chronic toxicity and even mortality to animals and humans. Previous MC removal strategies concernedonly highly contaminated water, in which the concentration of the pollutant was considerably larger than that in the natural world. In this study, we developed a composite of TiO2-coated magnetic carbon microtube (C-TiO2-Fe3O4) and used it as a photocatalyst to efficiently remove microcystin-LR (MC-LR) from water under visible light from water. And the huge surface of the carbon microtube dramatically boosted the adsorbability and charge mobility, which lowered the recombination rate of electron–hole pairs, and hence systematically enhanced photocatalytic activity. The combination of adsorption and photodegradation endowed the composite with a better performance in the removal of trace amounts of MC-LR than the C-TiO2. It was found that increasing the contact time and catalyst dosage, acidic environment, and lower initial MC-LR concentration had positive effects on MC-LR removal. The optimum reaction conditions of C-TiO2-Fe3O4 was a reaction time of 12.68 min, a catalyst dosage of 0.39 g·L−1, and a pH of 7.72. The C-TiO2-Fe3O4 (surface area normalized apparent reaction rate constants K/SBET = 1.2 × 10−4) presented a higher reaction rate than C-TiO2 (K/SBET = 8.4 × 10−5). Moreover, the stable removal capability of C-TiO2-Fe3O4 was confirmed over multiple cycles. Finally, the ecological safety performance was also evaluated after visible light illumination. This work paves the way for the development of more efficient and easily separable purifiers for the removal of pollutants and toxins from contaminated water.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 9","pages":"1342-1342"},"PeriodicalIF":0.0,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/9/1342/pdf?version=1746004341","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel MIL-53(Fe)@C Magnetic Composite Electrode for Efficient Dechlorination of Disinfection By-Product Trichloroacetic Acid in Water Treatment","authors":"Xiaoyan Ma, Rongbin Quan, Wenqing Cao, Weijie Zhang, Su Jiang, Feng Jiao, Jiulong Wang, Stefanos Giannakis","doi":"10.3390/w17091309","DOIUrl":"https://doi.org/10.3390/w17091309","url":null,"abstract":"Electrochemical reduction is a promising strategy for the dechlorination of halogenated organic compounds, offering advantages such as enhanced electron transfer efficiency and increased hydrogen atom concentration. It has garnered significant attention for application in mitigating halogenated disinfection by-products (DBPs) in drinking water, owing to its high efficiency and simple operation. In this study, trichloroacetic acid (TCAA), a representative DBP, was selected as the target contaminant. A novel composite cathode comprising a metal–organic framework MIL-53(Fe)@C supported on an Nd magnet (MIL-53(Fe)@C-MAG) and its dechlorination performance for TCAA were systematically investigated. The innovative aspect of this study is the magnetic attachment of the MOF catalyst to the carbonized cathode surface treated through carbonization, which fundamentally differs from conventional solvent-based adhesion methods. Compared to the bare electrode, the MIL-53(Fe)@C-MAG achieved a TCAA removal efficiency exceeding 96.03% within 8 h of contact time. The structural characterization revealed that the α-Fe0 crystalline phase serves as the primary active center within the MIL-53(Fe)@C catalyst, facilitating efficient electron transfer and TCAA degradation. The scavenger experiments revealed that TCAA reduction involves a dual pathway: direct electron transfer and atomic hydrogen generation. The modified MIL-53(Fe)@C-MAG electrode exhibited robust electrolytic performance over a broad pH range of 3–7, with TCAA removal efficiency showing a positive correlation with current density within the range of 10–50 mA/cm2. Furthermore, the electrode maintained exceptional stability, retaining more than 90% removal efficiency after five consecutive operational cycles. The versatility of the system was further validated by the rapid and efficient dechlorination of various chlorinated DBPs, demonstrating the broad applicability of the electrode. The innovative magnetic composite electrode demonstrates a significant advancement in electrochemical dechlorination technology, offering a reliable and efficient solution for the purification of drinking water contaminated with diverse halogenated DBPs. These results provide valuable insights into the development of electrolysis for dechlorination in water treatment applications.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 9","pages":"1309-1309"},"PeriodicalIF":0.0,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/9/1309/pdf?version=1745752012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147920326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Per- and Polyfluoroalkyl Substances in Surface Water of Fuyang River (Handan Section): Occurrence, Source Apportionment, and Risk Assessment","authors":"Xiaoying Pan, Lifeng Wu, Dong Wang","doi":"10.3390/w17081223","DOIUrl":"https://doi.org/10.3390/w17081223","url":null,"abstract":"Perfluorinated and polyfluoroalkyl substances (PFASs), as an emerging type of pollutant, always pollute water quality to a certain extent. The occurrence, source, and risk of PFASs in the Fuyang River are not well understood. For the first time, the state of PFASs in the upper Fuyang River (Handan section) was investigated. The results showed that there were 10 types of PFASs with concentrations higher than the limit of quantitation in the surface water of the Fuyang River. The surface water ρ (∑PFASs) ranges from 13.80 to 22.88 ng·L−1. The highest quality score is perfluorooctane sulfonate (PFOS), which is 59.40%. PFASs are mainly composed of long-chain substances. PFASs generally show a trend of gradually increasing downstream. PFASs have the same source, mainly from industrial activities around rivers and rainfall inputs. Principal component analysis shows that PFASs mainly come from the leather and textile manufacturing industries, fluoropolymer production, and electroplating metal industries. The concentration of PFASs in the Fuyang River has not yet affected ecology and health.","PeriodicalId":23623,"journal":{"name":"Water SA","volume":"17 8","pages":"1223-1223"},"PeriodicalIF":0.0,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4441/17/8/1223/pdf?version=1745210688","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147922077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}