SCIENCE OF THE TOTAL ENVIRONMENT
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2024
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IF 8.2
Qian Zhang,Xinyan Xu,Chenzhuo Song,Dengke Zhang,Yi Kong,Xinyi Cui
Tire wear particles (TWP), as an emerging type of microplastics, are a significant source of contaminants in roadside soils due to their high concentration of pollutants, including polycyclic aromatic hydrocarbons (PAHs). This study explored the impact of ultraviolet (UV) exposure and natural aging on the in vitro bioaccessibility of PAHs associated with TWP in soil on a China-wide scale. Our findings suggested that UV exposure amplified the negative charge of TWP by 75 % and increased the hydrophobic groups on the particle surface. The bioaccessibility of 3- and 4-ring PAHs in TWP was significantly ( p < 0.05) heightened by UV exposure. After 20 types of soils containing 2 % UV-exposed TWP underwent natural aging, the bioaccessibility of PAHs saw a significant decrease ( p < 0.05) to 16–48 %, compared to 28–96 % in the unaged group. Soil pH and electrical conductivity (EC) were the two primary soil properties positively influencing the reduction of in vitro PAHs concentration and PAHs bioaccessibility. According to the prediction results, soils in southern China presented the highest potential region for the release of bioaccessible PAHs from TWP, highlighting the regional specificity of environmental impact. Our study provides valuable insights into the biological impact of PAHs associated with TWP on a regional scale, and offers scientific evidence for targeted soil risk management strategies.
研究领域:
环境科学
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毒理学
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PubMed
高影响因子
GREEN CHEMISTRY
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2024
·Vol. 26
·期 6
·3211-3220
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IF 9.3
Pengfei Li,Yehong Han,Dandan Han,Hongyuan Yan
An innovative solid-phase microextraction (SPME) fiber coating, melamine–formaldehyde resin (MFR), was synthesized with a green cross-linker (paraformaldehyde), and it exhibited high heat resistance (up to 350 °C). Seven polycyclic aromatic hydrocarbons (PAHs) were chosen as analytes, and the results demonstrated the MFR-based SPME fiber's exceptional enrichment capabilities and efficient extraction, with high enrichment factors and significantly improved efficiency compared to the conventional polydimethylsiloxane (PDMS) fibers. The unique superiority of the MFR was attributed to its strong π–π interactions and amino-associated enhancement, as well as its porous structure and rough surface, which provided abundant adsorption sites and facilitated rapid mass transport of analytes. Furthermore, the preparation conditions of the MFR-coated SPME fiber were compared with those of commercially available and reported fibers, emphasizing the advantages of the MFR-coated fiber, such as its simplicity, cost-effectiveness, reproducibility, and eco-friendliness. The MFR-based SPME fiber exhibited significant advantages, including high enrichment factors (ranging from 1906- to 7153-fold) for PAHs and good fiber-to-fiber reproducibility (8.7–14.6%), outperforming commercially available PDMS fibers by a factor of 4.9–82.8-fold. This study also considered important factors affecting the extraction process, such as ionic strength, temperature, and time, and optimized these parameters for the best extraction efficiency. The greenness of the developed method was assessed using the Analytical Eco-Scale, and the results showed that it was green in terms of reagent dosage, energy consumption, and waste. The developed headspace solid phase microextraction–gas chromatography–tandem mass spectrometry (HS-SPME-GC-MS/MS) method based on the MFR coating exhibited excellent precision, accuracy, and repeatability, making it a reliable method for the determination of trace PAHs in environmental water samples.
研究领域:
分析化学
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环境科学
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材料科学
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MARINE POLLUTION BULLETIN
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2025
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IF 4.9
Ruicong Gao,Jiaqi Lu,Zhixuan Wei,Hao Xu,Siyuan Jing,Minghuo Wu
PAHs, a group of persistent organic pollutants with significant carcinogenic and mutagenic effects, are widely distributed in the environment and can accumulate in sediments, posing potential threats to mangrove ecosystems and human health. This study is one of the most recent studies that presents an analysis of the vertical contamination characteristics of PAHs in mangrove sediments down to a depth of 80 cm, utilizing a combination of solid-phase extraction and gas chromatography–mass spectrometry. The results showed that the mean value of PAHs was 258.82 ng/g (range from 226.41 to 320.07 ng/g) in the studied mangrove areas (Beihai City, Guangxi). The results indicated a decline in PAH concentrations with increasing sediment depth, with values of 259.3 ng/g in surface sediments (0–10 cm), 240.9 ng/g in intermediate sediments (30–40 cm), and 241.1 ng/g in deeper sediments (60–70 cm). This suggests that PAHs not only remain in the surface layer of the sediment, as in previous studies, but also migrate vertically within the sediment. Based on the results, the potential ecological risks of PAHs were also evaluated by the ERL/ERM model. After environmental risk assessment, it was found that among the six PAHs studied, the contents of all except acenaphthene were lower than the ERL, indicating a low ecological risk. This study elucidates the vertical distribution of PAHs in mangrove sediments, offering crucial data for ecological risk assessment and establishing a foundation for future research on PAH transport mechanisms and their ecological impacts, thereby informing environmental management strategies.
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Journal of Analysis and Testing
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2025
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IF 7
Li Han,Cui Yuanyuan,Zhen Changqing,Lin Xiaohui,Li Ke,Yang Chengxiong
Microporous organic network (MON) has emerged as efficient stationary phases for high-performance liquid chromatographic (HPLC) separation. Nevertheless, the inherent superhydrophobic networks made their applications limited in the reversed-phase (RP) mode. In this work, a novel amino acid L-cysteine (L-Cys) modified core-shelled microsphere MON@SiO 2 -L-Cys was synthesized via the efficient thiol-yne “click” reaction for hydrophilic interaction chromatography /reversed-phase liquid chromatography (HILIC/RPLC) mixed-mode chromatographic separation. Baseline separation of various hydrophilic and hydrophobic compounds including aromatic ketones, phthalate esters, alkylbenzenes, amines, polycyclic aromatic hydrocarbons, phenols, nucleosides, nucleic acid bases, sulfonamides, water-soluble vitamins, cephalosporin antibiotics, and estrogens was realized on MON@SiO 2 -L-Cys packed column based on the predesigned mixed-mode retention mechanisms. The MON@SiO 2 -L-Cys packed column also exhibited higher selectivity compared to bare SiO 2 , MON@SiO 2 without L-Cys, and C 18 packed columns, revealing the synergistic interactions of MON’s networks and the modified L-Cys molecules. This work provided a feasible way to construct a novel amphipathic MON-based stationary phase, broadened the application scope of MON for hydrophilic analytes, and uncovered the prospects of MON in mixed-mode HPLC.
研究领域:
分析化学
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材料科学
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Yixin Kuang,Suxin Zhou,Yuefan Liu,Xiaoying Feng,Luyi Chen,Juan Zheng,Gangfeng Ouyang
The size of the adsorbent has the potential to influence extraction performance, but the size effect at the nanoscale is still poorly understood. In this study, organic-inorganic hybrid nanospheres (OIHNs) with controllable nanoscale sizes of 30, 50, and 100 nm were successfully prepared. These materials were further fabricated as solid phase microextraction (SPME) coatings with similar thicknesses, and coupled with gas chromatography-mass spectrometry (GC-MS) to investigate their extraction performance. The results showed that the extraction capacities of OIHNs for chlorobenzenes (CBs) and polycyclic aromatic hydrocarbons (PAHs) were much better than those of their corresponding derived carbon materials, despite the smaller specific surface areas and lower porosities of them. In addition, the enrichment performance increased significantly with decreasing particle size, and the OIHN-30 coating demonstrated the best performance, with enrichment factors ranging from 1098 to 6853 for CBs. Finally, a highly sensitive and practical analytical method was established with a wide linear range of 0.5–5000 ng·L −1 , and the limits of quantification (LOQs) were 0.43–1.7 ng·L −1 . The determinations of ultratrace CBs in five marine water samples and five fresh water samples were realized successfully. This study is expected to contribute to a deep understanding of the environmental effects of nanoparticles and the design of high-performance adsorbents.
研究领域:
环境科学
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分析化学
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2026
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IF 9.2
Maolin Wang,Haoyang Fu,Yanchun Fan,Gang Zhao,Tianwen Liu,Yi Liu,Qingqing Wu,Ying Huang
Persulfate (PS)-based advanced oxidation of polycyclic aromatic hydrocarbons (PAHs) in carbonate-rich water is severely constrained by radical scavenging and surface passivation of iron-based activators. Here, a dithionite–zerovalent iron–copper (DTN–ZVI–Cu) ternary system was developed to promote persulfate activation toward predominantly non-radical oxidation under bicarbonate-rich conditions. DTN and ZVI accelerated Cu(II)-to-Cu(I) reduction while simultaneously regenerating the ZVI surface, thereby sustaining Cu-centered redox turnover and facilitating the formation of Cu(III)-like oxidizing species. In parallel, DTN promoted sulfur-centered conversion pathways that favored 1 O 2 generation. These non-radical oxidizing pathways are generally less susceptible to inorganic-anion scavenging than conventional sulfate and hydroxyl radicals. Under standard conditions, the system achieved 91% acenaphthene removal within 60 min ( k obs = 0.039 min −1 ), an 8.7-fold kinetic enhancement over ZVI/PS alone. Moderate bicarbonate further promoted degradation, with k obs reaching 0.13 min −1 at 250 mg/L HCO 3 − , which is consistent with a plausible role of copper–carbonate complexation in stabilizing Cu redox cycling and favoring non-radical oxidation pathways. XPS analysis suggested that DTN–ZVI coupling elevated the reactive copper pool (Cu(I) + Cu(III)) to 57% of total surface copper. Applied to synthetic wastewaters, the system maintained 90–96% PAH removal at optimal dosages, indicating strong performance across complex saline matrices. This work demonstrates the feasibility of using coexisting Cu(II) as a catalytic resource for non-radical persulfate activation in carbonate-rich water.
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Food Chemistry-X
·
2026
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IF 9.2
Zan Tan,Fengping Hou,Tingyi Qiao,Nan Dong
The migration of harmful plastic additives with diverse polarities and boiling points from plastic food contact materials (FCMs) poses a risk to human health, necessitating simple and effective analytical methods. Herein, a π-conjugated truxene (Tr) was covalently bonded with cucurbit[6]uril (Q[6]) to afford a novel Q[6]-Tr compound, which was fabricated as both a solid-phase microextraction (SPME) fiber coating and a gas chromatography (GC) stationary phase to establish an integrated SPME-GC system. The proposed method determined 9 plastic additives from 4 categories, showing good linearity (R 2 ≥ 0.9863) over 5–1000 μg/L, low detection limits (0.21–0.45 μg/L), enrichment factors of 13–42, and satisfactory recoveries (70.8–97.5%), with performance superior to commercial counterparts. Practical application quantified BHT migration from takeout containers (2.341 μg/L) and DIBP from containers and plastic bags (2.504 and 4.954 μg/L). This dual-functional Q[6]-Tr system offers an organic solvent-free, universally applicable approach for multiclass additive analysis in FCMs.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2026
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IF 4.5
Peng Cui,Cailan Chen,Lilin Fang,Hanyu Zhang,Peiwen Wu,Kaihao Mo,Ge Niu,Yan Huang,Wenshuai Zhu,Zhichang Liu
Shaping of adsorbents is crucial for their practical implementation in chemical processes, yet often constitutes a synthesis bottleneck. Herein, we report the rapid, one-pot synthesis and direct shaping of a series of novel porous organic polymers based on cyclodextrin (CD) and p-phenylene diisocyanate (PPDI). The porosity of these monolithic materials was further tailored through controlled carbonization at elevated temperatures, yielding hierarchically structured carbons with tunable micro- and mesopores. Their adsorption performance was evaluated towards polycyclic aromatic hydrocarbons (PAHs), key chemical feedstocks and prevalent contaminants in catalytic cracking diesel. The optimized carbon, derived from β-CD-PPDI carbonized at 1000 °C (β-CD-PPDI-1000), exhibits a high BET surface area of 913 m 2 g −1 and demonstrates excellent PAHs uptake capacities (16.55 mg g −1 for naphthalene, 62.04 mg g −1 for anthracene, 12.00 mg g −1 for acenaphthene, and 35.25 mg g −1 for acenaphthylene). The adsorption process was analyzed through kinetic and equilibrium studies, revealing key mechanisms underlying the uptake behavior. These results position the shaped polymers and their derived porous carbons as promising, high-performance adsorbents for diesel purification. The presented strategy of rapid synthesis coupled with direct shaping offers a scalable and efficient pathway for manufacturing practical adsorbents, highlighting significant potential for industrial application in chemical engineering.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wang Kai Tong,Chaomeng Dai,Jiajun Hu,Mei Ru Yue,Yun Dong Liu,Bu Li,Jia Jie Zou,Jia Wang,Han Tang,Min-tian Gao,Yucang Liang,Wenjuan Wang,Jixiang Li
Hydrophobic organic contaminants (HOCs) threaten human health and ecosystems. The most economical and low-carbon remediation method employs surfactants to mobilize HOCs, followed by separation using carbon-based materials. A carbon-structure superimposition strategy (CSSS) was developed to prepare interface selectivity-based colloidal biochar (CBC-AO). In a solution with a pollutant concentration of 2.5 mg/L phenanthrene, a 99 % removal efficiency was achieved, and a 100 % recovery rate was obtained for common anionic surfactants. Notably, CSSS offers a unique approach to using lignocellulose-based biomass (LB)-derived biochar as an alternative to activated carbon (AC). The uniqueness of CSSS lies in revealing the carbon structure transfer mechanism, where cellulase pretreatment converts LB into aromatic carbon substrates, followed by air oxidation and colloidal treatment to transform unfavorable carbon structures into those beneficial for selective adsorption. This modification grants biochar selectivity and stability, addressing the challenge of balancing different carbon structures and functions. CBC-AO achieved a 90 % reuse rate after six cycles. Compared with traditional biochar, its acute biological toxicity was reduced by 77 %, and its environmental friendliness was further increased. In terms of carbon emissions and cost, CBC-AO outperforms AC, reducing emissions by 0.62 tons of CO 2 per year, whereas AC increases emissions. CSSS overcomes traditional biomass selection limitations, broadening biomass options and providing efficient, economical, and carbon-negative alternatives to conventional carbon-based materials. Furthermore, integrating CSSS with biofuel production results in biochar performance comparable to commercial AC, potentially advancing both industries.
研究领域:
环境科学
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材料科学
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生物技术
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2015
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IF 4.169
Shu-Wen Xue,Min-Qiong Tang,Li Xu,Zhi-guo Shi
Magnetic nanoparticles (MNPs) featured with divinylbenzene (DVB) and sulfonate functionalities (Fe 3 O 4 –DVB–SO 3 − ) were prepared via “thiol-ene” click chemistry. The hydrophobic DVB moieties were dedicated for extraction while the hydrophilic sulfonate groups were designed for dispersing the MNPs in aqueous sample solution. Thus, the specially designed material could ensure operational convenience and improve reproducibility during extraction. The application of the material was demonstrated by the extraction of polycyclic aromatic hydrocarbons (PAHs) from environmental water samples followed by gas chromatography–mass spectrometric analysis. The main factors influencing the extraction, including the type of the desorption solvent, the agitation mode, the amount of MNPs, extraction and desorption time and salt addition in sample solution, were investigated in detail. Under the optimized conditions, the proposed method showed satisfactory reproducibility with intra-day and inter-day relative standard deviations less than 16.5% and 21.2%, and low limits of detection of 1.1 pg mL −1 , 0.8 pg mL −1 , 1.1 pg mL −1 , 1.4 pg mL −1 , 0.6 pg mL −1 , 2.1 pg mL −1 and 0.7 pg mL −1 for naphthalene, acenaphthene, fluorine, phenanthrene, anthracene, fluoranthene and pyrene, respectively. The developed method was also successfully used for determination of the PAHs in genuine lake and river environmental water samples by standard addition method. All the studied PAHs were detected in these waters with comparable results by the standard liquid–liquid extraction method. The developed MNPs with dual property of hydrophobicity and hydrophilicity were suitable for the treatment of water samples. The magnetic solid phase extraction based on this material was reliable and convenient. It has great potential in the preconcentration of trace analytes in complex matrix.
研究领域:
环境科学
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分析化学
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高影响因子
ANALYTICA CHIMICA ACTA
·
2015
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IF 4.513
Juan Zheng,Kun Wang,Erlun Luo,Dingcai Wu,Fang Zhu,Ruifen Jiang,Chengyong Su,Chaohai Wei,Gangfeng Ouyang
The monodisperse microporous carbon nanospheres (MMCNSs) were applied in solid phase microextraction for the first time. The MMCNSs-fiber was prepared by sol–gel technique and good repeatability and reproducibility were obtained, due to the excellent monodispersity of the MMCNSs . The sol–gel-MMCNSs fiber exhibited superior extraction ability for polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs), compared with the commercial polydimethylsiloxane/divinylbenzene (PDMS/DVB) fiber and the fiber prepared with its precursor, the monodisperse microporous polystyrene nanospheres (MMPNSs). Moreover, the fiber has good thermostability and strong acid/base durability. The sol–gel-MMCNSs fiber was then employed to detect PAHs and OCPs in aqueous samples by combining with gas chromatography–mass spectrometer (GC–MS). Under the optimized conditions, the detection limits of the proposed method ranged from 0.10 to 5.5 ng L −1 . Furthermore, the method was successfully utilized for the analysis of PAHs and OCPs in real samples, with satisfactory recoveries in the range of 81.0–120% for the Pearl River water samples and 72.8–118% for the coking wastewater samples.
研究领域:
分析化学
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环境科学
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PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2018
·
IF 3.716
Xue Xiong,Meiling Qi
This work describes the separation performance of utilizing hexagonal boron nitride (h-BN) as the stationary phase for capillary gas chromatography (GC). The statically coated h-BN column showed moderate polarity and achieved column efficiencies of 3455 plates/m and 3800 plates/m for naphthalene and n -dodecane, respectively. With temperature-dependent structure properties, the h-BN stationary phase exhibited stronger retention for polycyclic aromatic hydrocarbons (PAHs) over phthalic acid esters (PAEs) and showed advantageous separation performance over the g-C 3 N 4 and commercial polysiloxane stationary phases. Moreover, it displayed preferential retention for halogenated analytes and high resolution performance for structural and positional isomers. In addition, the h-BN column showed good column repeatability with relative standard deviation (RSD) values of 0.03%–0.07% for run-to-run, 0.31%–0.71% for day-to-day and 2.6%–5.3% for column-to-column, respectively, and thermal stability up to 260 °C.
研究领域:
分析化学
·
材料科学
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PubMed
高影响因子
危险品化学品经营许可证（带存储）