JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
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IF 8.4
Zhixiang Xu,Caiqing Li,Jinrui Xiong,Siyuan Hu,Yitao Ma,Siyuan Li,Xiaomin Ren,Bin Huang,Xuejun Pan
Antibiotic resistance genes (ARGs) have become a major focus in environmental safety and human health, with concerns about non-antibiotic substances like microplastics facilitating their horizontal gene transfer. Phthalate esters (PAEs), as ubiquitous plastic additives, are prevalent in aquatic environments, yet there remains a dearth of studies examining their impacts on ARG dissemination. This study focuses on dibutyl phthalate (DBP), a prototypical PAE, to assess its potential influence on the conjugative transfer of ARGs along with the related molecular mechanisms. The results revealed that DBP exposure at environmentally relevant concentrations significantly promoted the conjugative transfer of RP4 plasmid-mediated ARGs by up to 2.7-fold compared to that of the control group, whereas it severely suppressed the conjugation at a high concentration (100 μg/L). The promotion of conjugation transfer by low-concentration DBP (0.01–10 μg/L) was mainly attributed to the stimulation of ROS, enhanced membrane permeability, increased energy synthesis, increased polymeric substances secretion, and upregulation of conjugation-related genes. Conversely, high DBP exposure induced oxidative damage and reduced ATP synthesis, resulting in the suppression of ARG conjugation. Notably, donor and recipient bacteria responded differently to DBP-induced oxidative stress. This study explores the environmental behavior of DBP in the water environment from the perspective of ARG propagation and provides essential data and theoretical insights to raise public awareness about the ecological security risks of PAEs.
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Nature Communications
·
2026
·
IF 18.1
Liu Shan,Gu Xiaosong,Chen Zhongxin,Liang Jiaxiang,Chen Hong
The kinetic limitations of reclaiming low-level orthophosphate (PO 4 3− ) in low-conductivity natural water bodies impede the in-depth remediation of anthropogenic eutrophication. Conventional adsorption and electrocoagulation (EC) methods are hindered by excessive chemical reagent consumption, high electrical energy demand, and substantial metal electrode consumption. Here, we present a solid-state electrolyte electrocoagulation (SEE) system that employs an interfacial coupling strategy to integrate dynamic ion enrichment with in situ anodic coagulation. By concentrating PO 4 3− at the solid-state electrolyte interface, the system overcomes inherent mass-transport constraints and enhances ion conductivity in dilute media. This localized concentration gradient accelerates apparent reaction kinetics, achieving a removal rate of 0.197 mg/L·min, minimizing energy consumption to 0.0325 kWh/g P and iron consumption to 3.829 g/g P. Consequently, SEE enables efficient, one-step purification below strict regulatory thresholds ( ≤ 0.02 mg/L, China’s Class I Surface Water Environmental Quality Standard). Validated as a photovoltaic-integrated, boat-mounted unit, this approach offers a robust decentralized solution for natural waters, with techno-economic and life cycle assessments confirming its economic viability and low environmental footprint.
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SENSORS AND ACTUATORS B-CHEMICAL
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2024
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IF 8
Zizhen Xiao,Siyi Hong,Yinxiang Chen,Zhijun Zhang,Ye Zhang
The harmful effects of nanoplastics (NPs) on both human health and the ecosystem have gained global attention. This study develops a photoelectrochemical-electrochemical (PEC-EC) dual-mode portable sensor based on CdS/CeO 2 heterojunction for the rapid detection of polystyrene nanoplastics (PS NPs) in aquatic environments. The interaction and aggregation between protein and PS NPs, facilitated by hydrophobic properties, influence electron transfer, thereby enabling the detection of PS NPs. Integration of the sensor with a portable EC workstation controlled by a smartphone streamlines the detection process, yielding rapid and clear results, and enhancing convenience for detection. The sensor exhibits the advantages of high sensitivity, good repeatability, and exceptional portability. A wide detection linear range of 0.5–800 μg/mL accompanied by the detection limit of 0.38 ng/mL can be achieved. The relative standard deviation of the sensor for the inter-day (intra-day) precision are determined ranging from 0.4 % to 2.97 % (0.94 % to 4.65 %) in real water samples. Furthermore, the sensor features a self-checking function, establishing it as a dual-mode system that introduces a novel approach for smart detection of PS NPs, with substantial potential for assessing PS NPs pollution in aquatic environments.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2024
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IF 4.4
Wei Xiang,Yueting Liao,Jinwei Cui,Yangyang Fang,Bining Jiao,Xuesu Su
Antibiotic adsorbents are getting significant attention due to the hazards posed by the accumulation of tetracycline antibiotics in water, which can adversely impact human and environmental health. Bimetallic organic frameworks (BMOFs) exhibit considerable potential in adsorption owing to their dense pore structures and synergistic effects. However, synthesizing efficient, low-cost, and easy-to-prepare BMOFs faces several challenges. Here, we describe the practical synthesis of a series of Fe/Cu-bimetallic organic frameworks (Fe/Cu-MOFs) using simple room-temperature aqueous solvent methods. The pore size structure of Fe/Cu-MOFs is determined by the Fe/Cu ratio employed in the synthesis process. Remarkably, when the Fe/Cu molar ratio was 1:2, the void ratio of Fe/Cu-MOFs increased to 0.7326 cm 3 /g, with a predominant mesoporous structure, and the maximum tetracycline (TC) adsorption capacity exhibited by Fe/Cu-BTC-1/2 was reported at a Q max of 1130.23 mg/g. The adsorption kinetics followed the quasi-second-order kinetic model, and the adsorption isotherms were consistent. The Fe/Cu-BTC-1/2 was effective throughout a wide pH range (6.0–10.0), exhibiting resilience against ionic interference and enabling recycling. The predominant mechanisms of TC adsorption by Fe/Cu-BTC-1/2 include coordination, vacancy filling, and π-π stacking. Thus, our research provides an excellent adsorbent for TC antibiotics and novel insights into the simple synthesis of BMOFs and their application in environmental remediation.
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Nano-Micro Letters
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2026
·Vol. 18
·期 1
·409
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IF 38.5
Xu Yan,Zhang Xuefei,Lou Size,Tang Zhe,Xie Dongmei,Zhang Chuanrui,Chen Mengran,Liu Heng,Sun Chuan,Ou Yixiang,Zong Peng-an
A pyramid-interface-structured Bi 2 Se 3 layer was electrochemically constructed on flexible carbon paper, exhibiting excellent hydrophobicity with a contact angle of 143.7°.
Dual-mode decoupling of temperature and pressure without cross-interference was achieved using a single material in both air and underwater environments.
The sensor maintains stable signal output under prolonged underwater operation, mechanical bending, electromagnetic interference exposure, and even direct flame contact, demonstrating exceptional environmental resilience.
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Journal of Physical Chemistry C
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2026
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IF 3.4
Wen-Xiang Jiang,Jing-Wen Zhou,Hao Jiang,Yu-Qing Wang,Xian-Ming Guo,Yu-Jia Chen,Bao-Ying Wen,Yue-Jiao Zhang,Jian-Feng Li
Abstract Ethylparaben (EP), a widely used preservative, is ubiquitous in aquatic environments and poses potential ecological risks. To address this issue, there is an urgent need to develop portable, rapid, and sensitive detection technologies. Hence, this study constructed a surface-enhanced Raman spectroscopy (SERS) method using silver nanocubes (AgNCs) as the active substrate for rapid on-site detection of EP in aquatic environments. By optimizing the particle size of the AgNCs, the localized surface plasmon resonance (LSPR) effect was maximized, generating high-density electromagnetic “hotspots” at the nanocube vertices and interstitial gaps to achieve exceptional SERS signal enhancement. Integrated with a portable Raman spectrometer, this substrate-based method enables a rapid on-site detection within 2 min. It should be noted that the predried SERS substrates are prepared in advance, and the 2 min analytical time solely accounts for sample loading, rapid interaction, and spectral acquisition (with actual Raman exposure taking only 0.5 s). Compared with conventional techniques, this approach demonstrates practical potential for rapid on-site screening. Crucially, this remarkable speed is attained without compromising analytical sensitivity, delivering a reliable lowest experimentally tested concentration of 1.0 mg/L for rapid screening. Meanwhile, this SERS platform exhibits excellent anti-interference capability, reproducibility, and has been successfully applied to the analysis of actual wastewater samples. This study provides an effective and practical technical approach for rapid on-site screening of organic pollutants in wastewater.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2017
·Vol. 24
·期 29
·23144-23152
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IF 2.741
Wang Li,Lu Yixin,Yang Chen,Chen Chengyu,Huang Weilin,Dang Zhi
The stability of nanoparticles (NPs) in aquatic environments is important to evaluate their adverse effects on aquatic ecosystems and human health. Nanoparticle stability is known to be influenced by coexisting ions and dissolved organic matter. This study was designed to investigate the effects of coexisting low-level Cd(II) on the stability of humic acid-coated nano-TiO 2 (HA-TiO 2 ) particles in aquatic environments by measuring their aggregation kinetics through time-resolved dynamic light scattering (DLS) and monitoring suspended HA-TiO 2 concentrations via optical absorbance changes over time. The particles exhibited aggregation behavior consistent with the classic Derjaguin–Landau–Verwey–Overbeek (DLVO) theory. The results showed that Cd(II) concentration, pH, and ionic strength had various effects on the aggregation kinetics of the HA-TiO 2 NPs. The HA-TiO 2 particles aggregated faster as the Cd(II) concentration increased whereas the stability of the nanoparticles increased as the solution pH increased or ionic strength decreased regardless of the Cd(II) concentration. At the fixed pH and ionic strength conditions, the addition of Cd(II) promoted aggregation of nanoparticles, leading to higher attachment efficiencies. The enhanced aggregation of the HA-TiO 2 NPs in the presence of coexisting cadmium ions in aqueous solutions indicated that the fate and transport of nanoparticles could be greatly affected by heavy metals in aquatic environments.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Dehua Zeng,Chengyu Chen,Ziqing Huang,Jingyi Gu,Zhiyu Zhang,Tingting Cai,Jiamin Peng,Weilin Huang,Zhi Dang,Chen Yang
Fate and transport of nanoplastics in aquatic environments are affected by their heteroaggregation with minerals in the presence of macromolecules. This study investigated the heteroaggregation of polystyrene nanoplastics (PSNPs) with goethite nanoparticles (GNPs) under the influence of macromolecules [humic acid (HA), bovine serum albumin (BSA), and DNA] and electrolytes. Under 1 mg C/L macromolecule, raising electrolyte concentration promoted heteroaggregation via charge screening, except that calcium bridging with HA also enhanced heteroaggregation at CaCl 2 concentration above 5 mM. At all NaCl concentrations and CaCl 2 concentration below 5 mM, 1 mg C/L macromolecules strongly retarded heteroaggregation, ranking BSA > DNA > HA. Raising macromolecule concentration strengthened such stabilization effect of all macromolecules in NaCl solution and that of DNA and BSA in CaCl 2 solution by enhancing steric hindrance. However, 0.1 mg C/L BSA slightly promoted heteroaggregation in CaCl 2 solution due to stronger electrostatic attraction than steric hindrance. In CaCl 2 solution, raising HA concentration strengthened its destabilization effect via calcium bridging. Macromolecules having more compact globular structure and higher molecular weight may exert greater steric hindrance to inhibit heteroaggregation more effectively. This study provides new insights on the effects of macromolecules and electrolytes on heteroaggregation between nanoplastics and iron minerals in aquatic environments.
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WATER RESEARCH
·
2025
·
IF 12.4
Dilnur Dilxat,Wei Zhang,Long-Jie Wang,Jing-Jing Deng,Wei-Kang Wang,Juan Xu
Antibacterial resistance in microbial infection poses a serious global threat to both human health and environmental safety. Accurate, sensitive and rapid detection of antibiotic resistant genes (ARGs) is essential for comprehensive evaluation of aquatic environmental risks. However, conventional ARG detection methods strongly rely on nucleic acid amplification based on complete DNA template, failing to capture highly degraded ARG fragments, particularly free ARGs in complex environmental matrices. In this study, we present a novel biolayer interferometry-based multi-channel biosensing platform for ARGs detection that breaks through the framework of nucleic acid amplification. By leveraging a click chemistry-mediated ligation chain reaction and enzyme labeling signal amplification strategy, our platform achieves highly-efficient detection of tetracycline- and sulfonamide-related ARGs ( tetA, tetC, tetG, tetM and sul1 ) at a detection limit of 602 copies/µL, with a response time of less than 30 min. This platform demonstrates excellent accuracy, sensitivity, selectivity, and repeatability using renewable biosensors, enabling direct detection of ARG levels in practical wastewater from farms, hospitals and wastewater treatment plants. The simple “ dip-and-read ” operation allows for real-time monitoring of dynamic changes in ARG levels in aquatic environments. This BLI platform provides a powerful tool for early warning, risk assessment, and improved management of ARGs, offering substantial potential for safeguarding public and ecological health.
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Water Research X
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2025
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IF 8.2
Jinfen Huo,Xingmin Chen,Merete Grung,Youfei Ma,Wanying Lin,Xuan Shi,Yunfei Ma,Yan Lin
Microplastics in aquatic environments are readily colonised by microorganisms to form biofilms facilitating the transport of contaminants and attached microbes. We examine the impact of biofilm formation on the physicochemical properties of microplastics and its subsequent effects on the adsorption of organic pollutants. Here, the adsorption of triclosan (TCS) onto polystyrene (PS) microplastics was investigated by comparing pristine PS (O-PS), UV-aged PS (A-PS), and their biofilm-colonised counterparts (O-PS bio and A-PS bio ). The results show that the adsorption rate of TCS by PS after aging decreased by 45% without a significant effect on the adsorption capacity. The adsorption rate of TCS by the PS biofilm increased by 100%, whereas the adsorption capacity decreased by 57%. Based on 16S rRNA analysis, the diversity and richness of biofilm microorganisms were reduced in the presence of TCS, leading to a change in the dominant species of biofilm microorganisms. By accurately assessing the adsorption behaviour of organic contaminants on microplastic biofilms in the laboratory, this study contributes to a deeper understanding of the interactions between microplastics and organic contaminants in real aqueous environments and provides insights into the effects of TCS, as well as the integrated risk of organic contaminants.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Yuanyuan Zhao,Mengmeng Zhang,Jiapeng Liu,Jing Hou
Co-exposure to low-density polyethylene microplastics (LDPE-MPs) and plastic additives like bisphenol A (BPA) and bisphenol AF (BPAF) poses a growing concern in aquatic environments, yet the role of LDPE-MPs in modulating their toxicity remains debated. This study integrates transcriptome sequencing, adsorption/desorption kinetics, and computational toxicology to assess how LDPE-MPs influence BPA- and BPAF-induced toxicity in zebrafish. We found that BPAF is more toxic than BPA, with 96 h lethal concentration 50 % (LC 50 ) values of 1.659 mg/L for BPAF and 6.219 mg/L for BPA. LDPE-MPs act as dual modulators, alleviating or exacerbating toxicity in a chemical- and pathway-dependent manner. For BPA, LDPE-MPs mitigate its impact on phototransduction by adsorbing BPA, reducing its bioavailability, and preserving light signal conversion. In contrast, LDPE-MPs exacerbate BPA-induced nucleotide metabolism disruptions by enhancing inosine-5′-monophosphate dehydrogenase (IMPDH) activity, leading to increased gene transcription and accumulation of metabolic intermediates. For BPAF, LDPE-MPs alleviate glucose metabolism disruptions by enhancing ligand-receptor interactions, restoring glucose homeostasis. However, LDPE-MPs have little effect on BPAF-induced upregulation of steroid biosynthesis genes. These findings highlight the integration of multi-omics approaches (transcriptome sequencing, adsorption/desorption kinetics, and computational toxicology) to reveal the dual mechanisms of LDPE-MPs, addressing the knowledge gap in understanding pathway-specific toxicity mechanisms in existing studies. The results emphasize the necessity of prioritizing regulatory control of BPAF and integrating BPA/BPAF-MPs interactions into future pathway-based environmental risk assessment frameworks.
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Lisong Xia,Lei Cheng,Wenni Xi,Xiliang Zhang,Xianyang Shi
The environmental fate and risks of mononitrophenols (mono-NPs), the simplest nitrophenols (NPs) often found in aquatic environments, are profoundly influenced by anaerobic bioreduction and co-existing electron shuttles (ESs), but little is known about the underlying mechanisms. Here, we elucidate the pathways of anaerobic mono-NPs bioreduction by Shewanella oneidensis MR-1 and assess the effect of model ESs on these processes. We found that all three mono-NPs isomers could be readily reduced to their corresponding aminophenols by S. oneidensis MR-1 under anaerobic conditions. CymA, a core component of the Mtr respiratory pathway, performs a dynamic role in these bioreduction, which is highly dependent on the bioreduction kinetics. The exogenous addition of quinones was found to accelerate the mono-NPs bioreduction through interactions with key outer-membrane proteins (e.g., OmcA and MtrC), and all these processes matched well to linear free energy relationships (LFERs). Surprisingly, adding riboflavin did not influence the bioreduction of all three mono-NPs isomers, which may be due to the contribution of OmcA and MtrC to these bioreduction processes and their downregulated expression. This study enhances our understanding of the environmental fate of mono-NPs and their bioconversion processes, providing valuable insights for the bioremediation of nitrophenol-contaminated sites.
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