APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yumei Li,Jiexin Wang,Wenbin An,Yi Zhang,Menghao Wang,Jian Fan
Nitrogen-doped carbon quantum dots (NCQDs) possess tunable fluorescence in the presence of organic pollutants, but the mechanism by which bisphenol compounds (BPs) regulate NCQDs’ fluorescence via intermolecular interactions remains unclear. Herein, we systematically investigated the fluorescence responses of NCQDs induced by three typical BPs (BPA, BPS, BPAF) in aqueous environments and the concentration-fluorescence correlation. Results showed all three BPs significantly enhanced NCQDs’ fluorescence, with a clear linear relationship between their low concentrations (0.2–100 μg/L) and fluorescence intensity. DFT calculations revealed that the hydrogen bonding energies between NCQDs and BPA/BPS/BPAF are much higher than those with water, indicating NCQDs form more stable complexes with BPs via hydrogen bonding. Natural transition orbital analysis demonstrated that hydrogen bonds formed by NCQDs’ surface carboxyl groups shift the S 1 state transition mode from dominant 1(n + π, π*) to 1(π, π*), triggering fluorescence intensity changes and emission spectral shifts. Additionally, hole-electron distribution analysis showed hydrogen bonds effectively inhibit electron transfer from NCQDs’ carbon skeleton to surface carboxyl groups, confirming hydrogen bonds play a pivotal role in regulating NCQDs’ electron transition processes.
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JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Yuanyuan Wan,Chun Liu,Xinru Li,Yuanguang Zhou,Zhimin Liu,Zhigang Xu
Bisphenols (BPs), as representative endocrine-disrupting compounds, pose potential risks to human health and aquatic ecosystems. However, their trace-level occurrence and interference from complex environmental matrices remain major challenges for sensitive and selective analysis. In this study, a novel phenylboronic acid-functionalized molecularly imprinted covalent organic framework (MICOF@S-S-BA) was designed and synthesized for the selective enrichment, sensitive determination, and ecological risk assessment of BPs in aquatic environments. Bisphenol A (BPA) was employed as the template molecule to construct specific recognition cavities via molecular imprinting, endowing MICOF@S-S-BA with enhanced selectivity and rapid adsorption kinetics toward BPs. Benefiting from the well-defined imprinting sites and synergistic functional interactions, MICOF@S-S-BA exhibited a high adsorption capacity, which showed a positive correlation with the Log Kow values of BPs. Environmental analysis revealed that the spatial distribution of BPs varied along the river flow, and no pronounced high-risk hotspots were identified in the investigated area. Nevertheless, the estrogenic equivalent levels of residual BPs ranged from 1.1597 to 14.5537 ng E 2 L⁻¹ , indicating non-negligible potential ecological risks. The proposed MICOF@S-S-BA provides a reliable and efficient analytical platform for the rapid, sensitive, and accurate determination of multiple BPs in aquatic environments, offering essential exposure data to support subsequent ecological risk assessment.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Jia-Xin Song,Dai-Fei Wang,Cheng Yang,Xiao-Fang Shen,Yue-Hong Pang
Background While many endocrine-disrupting compounds (EDCs) may form more toxic intermediates during degradation, current research predominantly focuses on parent compound residues and degradation efficiency, with limited attention to monitoring degradation process. This insufficient understanding of the degradation pathway hampers accurate ecological risk evaluation.In this work, a novel solid-phase microextraction (SPME) fiber coated with a porphyrin-based porous organic polymer (POR-Tp) was fabricated for simultaneous trace detection of bisphenol AF (BPAF) and monitoring of its degradation process. Results The POR-Tp has large specific surface area (330.201 m 2 /g) and pore size (3.929 nm). The POR-Tp/SSW fiber exhibited excellent durability (over 200 cycles), superior extraction capability and broad applicability to other bisphenols (BPA, BPB, BPF, TBBPA) and triclosan. The established method demonstrated a wide linear range (1-1000 μg/L) and low detection limit (0.03 μg/L). The method was successfully applied to determine trace levels of BPAF in environmental water and beverage samples. Furthermore, the light-activated persulfate degradation process of BPAF was monitored, with intermediate products tracked and a potential degradation pathway proposed, and toxicity analysis of BPAF and its intermediate products was performed. Significance This study successfully developed a novel porphyrin-based porous organic polymer (POR-Tp) as a SPME fiber coating for trace detection of BPAF in complex matrices and monitoring of its degradation process and intermediates transformation. The analytical strategy developed in this work provides an effective tool for precisely tracking the migration and transformation of EDCs, thereby improving ecological risk assessment throughout the degradation pathway.
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JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Lin Lv,Dan Qiu,Lei Wang,Yuanyuan Zhang,Yan Zhao
An innovative porous magnetic solid-phase extraction composite material (Fe 3 O 4 @MIL-101(Cr)-NH 2 @Dha@Dha-TAPB), integrating amino-functionalized metal-organic frameworks and phenolic hydroxyl‑functionalized covalent organic frameworks, was constructed for the efficient extraction of bisphenols (BPs) from aqueous samples. The adsorption and desorption parameters of the adsorbent were systematically optimized to establish the most effective sample pretreatment conditions. Under these optimized conditions, the composite material was integrated with high-performance liquid chromatography coupled with fluorescence detection (HPLC-FLD), yielding a method with excellent analytical performance. Specifically, the method exhibited good linearity over the range from 0.05 to 500 μg L −1 , with coefficients of determination ranging from 0.9993 to 0.9998, low limits of detection (0.003–0.014 μg L −1 ), and recovery rates of 82.9–101.6% for carbonated beverages and 82.2–99.3% for environmental water samples. By integrating the composite material with HPLC-FLD, a simple, sensitive, and reliable analytical approach was established and successfully employed for the analysis of BPs in aqueous samples.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Jinglin Chen,Xiaoying Feng,Tingting Tu,Chunying Wei,Yongsheng Cui,Juan Zheng,Gangfeng Ouyang
Background The increasing concern surrounding environmental pollution necessitates effective monitoring of emerging organic pollutants, especially for bisphenol compounds (BPs). These compounds are prevalent in various industries and have been detected in trace amounts across different ecosystems, raising significant health concerns. Current monitoring techniques often rely on extensive use of extraction solvents, large sample sizes, and expensive materials. Therefore, there is a pressing need for the development of cost-effective, stable, and eco-friendly pretreatment methods to enhance monitoring efficiency. Results A novel biochar from Gynostemma pentaphyllum , designated PBAGB, synthesized through a waste-to-wealth strategy that integrates K 2 CO 3 activation, ball-milling, and plasma treatment. This innovative approach resulted in a biochar with high specific surface area, abundant oxygen-containing functional groups, and numerous defect sites. The modifications significantly enhanced the active sites available on PBAGB, which was then employed as a solid-phase microextraction (SPME) fiber for extracting bisphenols (BPs). Compared to commercial fibers, the PBAGB-coated fiber demonstrated excellent stability, improved extraction performance, and lower production cost. Coupled with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), the method achieved good linear ranges (5–5000 ng L −1 ), low detection limits (0.39–2.9 ng L −1 ), and satisfactory relative recoveries (80.4–119.9%), allowing for efficient determination of BPs in 21 marine samples from the Beibu Gulf. Significance The work presents a more sustainable, practical, and effective sample pretreatment technique utilizing direct-immersion SPME (DI-SPME) coupled with UPLC-MS/MS for environmental monitoring of trace BPs in Beibu Gulf, following a waste-to-wealth strategy. It emphasizes the practical application of PBAGB-coated fibers in extracting BPs and assessing the ecological risks posed by trace BPs.
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Journal of Functional Foods
·
2026
·
IF 3.9
Wei Wei,Shuai Wang,Qiming Wu,Xinyong Zheng,Fuguo Liu
Walnut is a nutrient-rich food resource, yet the utilization of its high-quality plant proteins remains inefficient. Advanced processing strategies are therefore needed to develop walnut-based functional foods. In this study, walnut peptides were prepared by sequential hydrolysis with alcalase and papain, leading to the identification of a novel antioxidant peptide, IRALPEEVL. In vitro , IRALPEEVL increased the viability of PC12 cells under H 2 O 2 -induced oxidative stress. In vivo , it ameliorated cognitive and memory dysfunctions in zebrafish exposed to the environmental toxicant bisphenol AF. Proteomic analysis indicated that the neuroprotective effects of IRALPEEVL were associated with caveolin-1 (Cav1)-dependent penetration of the blood-brain barrier, regulating the AMPK-PI3K/Akt signaling, and inhibiting neuronal apoptosis. These findings highlight the potential of value-added walnut processing and support the application of walnut-derived peptides as functional food ingredients for health promotion.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Liu Jia,Duan Xiongcheng,Wu Zhuorui,Meng Wan,Zhang Lin,Li Hengye,Wei Meijie,Wang Zhongxia,Kong Fenying,Wang Wei
Herein,
thioether cyclodextrin-incorporated triazine-based porous
organic polymer (S-CD-TPOP) featuring multifunctional nature was prepared
for iodine vapor uptake and adsorption of organic micropollutants
(OMPs) and Hg 2+ from water. Polycondensation between specially
designed per-6-(4-formylbenzylthio)-β-cyclodextrin (FB-S-CD)
and 1,4-bis(2,4-diamino-1,3,5-triazine)benzene (BDTAB) affords the
S-CD-TPOP containing CD cavities, thioether, and triazine units as
well as high nitrogen content. S-CD-TPOP exhibits a high surface area
of 467.42 m 2 /g with 28.56% nitrogen and 2.16% sulfur contents.
S-CD-TPOP shows iodine vapor uptake of 1.70 g/g, where charge transfer
plays a dominant role. Moreover, S-CD-TPOP displays quick adsorption
kinetics and excellent removal efficiencies for phenols with a maximum
adsorption capacity ( q m ) of 181.16 mg/g
for bisphenol A (BPA). Host–guest and hydrophobic interactions
serve as the main mechanisms for the adsorption of OMPs onto S-CD-TPOP.
Additionally, S-CD-TPOP demonstrates rapid Hg 2+ adsorption
kinetics with a q m value of 45.25 mg/g,
primarily driven by coordination between the −S– group
and Hg 2+ . Furthermore, S-CD-TPOP exhibits great application
potential for simultaneously removing low concentrations BPA and Hg 2+ from river water. S-CD-TPOP also exhibits excellent reusability
and is a promising and versatile adsorbent for removing diverse environmental
pollutants.
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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
·
2025
·
IF 11.3
Jiaqi Hu,Mingyue Wang,Min Wang,Dandan Wang,Yuqiang Xiao,Yue Lan,Lingling Li,Meiling Yang,Minmin Wang,Leijiao Peng,Famin Ke,Xiurong Guo,Die Gao
Considering the efficient utilization of resources and the simultaneous detection of multiple analytes, achieving selective detection of diverse analytes on one fluorescent covalent organic framework (COF) is of great significance. Herein, a carboxyl-carbazole-rich fluorescent COF (COF-DABT) was strategically synthesized using 3,6-diamino carbazole, capable of forming halogen bonds with analytes, and 2,5-bis(4′-formylphenyl) terephthalic acid, rich in carboxyl groups, which interacts with various analytes and adjusts fluorescence performance via its electron-withdrawing properties. The introduction of carbazole imparts fluorescence to COF-DABT through the intramolecular charge transfer (ICT) effect, while enabling selective fluorescence quenching. Specifically, the ICT of carbazole can be disrupted via linear halogen bond interactions with TBBPS, resulting in selectively detection of TBBPS in a fluorescence-off mode. Furthermore, efficient enrichment of TBBPS is facilitated by halogen bonds with carbazole and hydrogen bonds with carboxyl groups on COF-DABT. Selective fluorescence quenching of COF-DABT by Fe 3 + is achieved through chelating effect around carboxyl group, as well as cation-π interaction with carbazole benzene ring. This enables high selectivity detection of Fe 3+ via a fluorescence-off mode. Additionally, Fe 3+ can be reduced by ascorbic acid through REDOX reaction, mitigating interference with TBBPS detection and facilitating fluorescence-off-on mode detection of AA. Besides, rich carboxyl groups on COF-DABT exert a negative regulatory effect on the carbazole ICT mechanism. To counter this, D/L-Arg, with a size complementary to the adjacent carboxyl groups on COF-DABT, is introduced. Hydrogen bond interactions between D/L-Arg and carboxyl groups reduce the negative regulatory effect, allowing fluorescence enhancement for highly selective detection of D/L-Arg. Through rational design and functional optimization of fluorescent COF structures, multi-mode detection methods enable simultaneous detection of different analytes, achieving the goal of "one stone, several birds."
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Environmental Science-Nano
·
2025
·
IF 5.1
A. Hefnawy,Mona A. Aziz Aljar,Hisham S. M. Abd-Rabboh,Ayman H. Kamel
A novel potentiometric sensor based on molecularly imprinted polymer (MIP) beads embedded in an asymmetric membrane configuration was developed for the trace monitoring of tetrabromobisphenol A (TBBPA), a widely used brominated flame retardant and persistent environmental pollutant. The sensor was fabricated by incorporating TBBPA-imprinted beads into a poly(vinyl chloride) (PVC) membrane plasticized with dioctyl phthalate (DOP) and drop-cast onto a reduced graphene oxide (rGO)-modified screen-printed electrode. The asymmetric design featured a surface-enriched ion-exchange layer, enabling enhanced accumulation of deprotonated TBBPA at the membrane interface. Under optimized conditions, the sensor exhibited a near-Nernstian slope of −56.6 ± 1.2 mV per decade over a linear range of 5.0 × 10−6 to 10−3 M and a detection limit of 5.5 × 10−7 M. The sensor demonstrated high selectivity toward TBBPA over structurally related phenols and common anions, with the enhanced discrimination attributed to the imprinting effect and nano-scale recognition features. Application to spiked environmental samples including wastewater, sediment, and plastic leachates yielded recoveries between 95.6% and 102.3%, with no significant deviation from high-performance liquid chromatography (HPLC) results (p > 0.05). The proposed MIP-based asymmetric membrane sensor offers a portable, cost-effective, and highly selective platform for on-site environmental monitoring of TBBPA.
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Results in Chemistry
·
2025
·
IF 4.2
Jieyao Ma,Tingsheng Ma,Yalan Wu,Huiling Liu,Xian Wang,Huaming Xiao
Bisphenol analogues (BPs) are crucial industrial materials extensively utilized in the production of consumer goods. However, it is still unknown whether they will affect the structure of myoglobin (Mb) and cause adverse impacts. This study systematically investigates the interactions between eleven BPs and their structural analogs with Mb using native electrospray ionization mass spectrometry (native ESI-MS), and further verified their interaction by fluorescence spectroscopy (FLS), circular dichroism (CD), and molecular docking (MD). Specifically, native ESI-MS analysis revealed that four ligands form stable complexes with Mb, and their binding constants were quantitatively determined. Thermodynamic data derived from FLS and CD analyses indicated that ligand binding induces conformational changes in Mb by reducing its α-helix content. MD simulations further elucidated that the binding sites for these ligands are located near the heme pocket of Mb, involving key interactions including hydrogen bonding and hydrophobic forces. Structure-activity relationship analysis suggested that sulfonyl and hydroxyl groups play critical roles in the ligand-Mb binding, where hydrophobic atoms enhance binding affinity by increasing molecular hydrophobicity, and ortho-substituted hydroxyl groups significantly influence binding strength. The integration approaches provide valuable information for the design and toxicity assessment of those bisphenol analogues in environmental implications.
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Toxics
·
2026
·Vol. 14
·期 1
·97
·
IF 4.1
Shengjun Bai,Xiaorong Wu,Wei Mao,Mengan Guo,Yufeng Qin,Guizhen Du
Bisphenol AF (BPAF), a prevalent bisphenol A (BPA) substitute, raises concerns due to its environmental persistence and endocrine-disrupting potency. While metabolic effects of direct exposure are documented, its intergenerational consequences remain unclear. Here, we demonstrated that perinatal BPAF exposure induced persistent metabolic syndrome in offspring, including glucose intolerance, hepatic steatosis, and adipose hypotrophy. Integrating multi-omics data, we observed that BPAF exposure shaped offspring’s hepatic epigenome, as demonstrated by genome-wide alterations in H3K27ac-marked regulatory elements. This epigenetic rewiring indicated a dual regulatory effect on transcriptomes that suppressed interferon-γ responses while activating sterol biosynthesis, ultimately perturbating hepatic metabolome, including depleted pantothenate levels and accumulation of pro-inflammatory eicosanoids. Our findings suggest that BPAF may act as a developmental toxicant capable of persistently disrupting the immune–metabolic axis through epigenomic mechanisms, highlighting the need for careful re-evaluation of its use as a BPA substitute in consumer products.
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