INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
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2012
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IF 1.298
X. Y. Zhang,X. Y. Liu,S. S. Liu,F. H. Liu,L. S. Chen,G. Xu,C. L. Zhong,P. C. Su,Z. N. Cao
Scirpus triqueter (Triangular club-rush), a typical wetland species, is used to study the response characteristics to pyrene. A pot experiment was conducted to investigate the growth parameters (height, diameter, shoot number, total volume, underground biomass, aboveground biomass and total biomass), and enzymes (catalase and superoxide dismutase) of S. triqueter. The characteristics of soil enzymes (catalase and polyphenol oxidase) and microorganisms (bacteria and fungi) were also assessed after pyrene treatment. Elevated pyrene concentration (80 mg·kg−1) in the soil reduced the shoot number and biomass significantly, especially at the early growth stage. In root tissue, the enzyme catalase was activated at 80 mg·kg−1 of pyrene. Compared to roots, shoots had higher enzyme activities. Catalase activities in the rhizosphere increased throughout the growth period of S. triqueter. Polyphenol oxidase activities in the rhizosphere were higher than those in the bulk soil and unplanted soil. The populations of bacteria (total bacteria, pyrene-tolerant bacteria, and actinomyces) and fungi decreased under the stress of high pyrene concentration, while that of pyrene-tolerant bacteria increased with the increasing pyrene concentration. The presence of pyrene did not benefit the growth of S. triqueter. S. triqueter and soil enzymes varied within the growth stages. The presence of S. triqueter could improve the activity of soil enzymes and facilitate the propagation of microorganisms which could help eliminate pyrene contamination.
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Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Yujia Tang,Zhenchu Dan,Hui Sun,Xinyue Hu
Polycyclic aromatic hydrocarbons (PAHs) present environmental challenges due to their hydrophobicity and persistence. This study proposes a novel approach combining three-dimensional electrocatalytic oxidation with surfactant-enhanced remediation, utilizing SnO 2 -Sb@TML particle electrodes to effectively degrade pyrene, a compound with extremely low solubility. Unlike conventional methods, this integrated system leverages surfactants—anionic (sodium lauryl sulfate), nonionic (Tween 80), and zwitterionic (cocamidopropyl betaine)—to maximize solubilization efficiency. Sodium lauryl sulfate (SLS) exhibited the highest solubilization at 3.095 mg·L −1 under conditions of 5 CMC, pH 3, and 0.1 M Na 2 SO 4 , maintaining 98.2 % of its concentration over 480 min of electrocatalytic oxidation. Pyrene is solubilized within the micelle core of SLS. The optimized system achieved 98.9 % pyrene removal at a current density of 20 mA·cm −2 , electrode spacing of 5 cm, and 50 g particle electrode dosage, with a 55.76 % energy reduction (3.61 KWh·g −1 ) compared to two-dimensional systems. Analysis of reactive oxygen species identified hydroxyl radicals (•OH) as the primary oxidants, contributing 86.65 % to degradation. Intermediate product analysis via GC-MS/MS revealed degradation pathways involving compounds like 4-phenanthrenecarboxylic acid and phthalic acid, providing insights into the oxidative breakdown of pyrene. This innovative system not only enhances degradation efficiency but also offers a sustainable, low-energy solution for persistent hydrophobic contaminants, expanding the applicability of electrocatalytic oxidation technology. These findings advance theoretical understanding and provide practical pathways for effective PAHs remediation.
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JOURNAL OF CONTROLLED RELEASE
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2024
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IF 10.5
Xuerong Zhao,Zhuoya Wang,Guanlin Wu,Lianhong Yin,Lina Xu,Ning Wang,Jinyong Peng
Intestinal ischemia reperfusion injury (II/R injury) is a common and intractable pathophysiological process in critical patients, for which exploring new treatments and mechanisms is of great importance to improve treatment outcomes. Apigenin-7-O-Glucoside (AGL) is a sugar derivative of apigenin natural product with various pharmacological activities to protect against intestinal diseases . In this study, we synthesized two amphiphilic molecules, namely DTPA-N10–10 and mPEG-TK-DA, which can scavenge free radicals and reactive oxygen species (ROS). They were successfully encapsulated AGL through self-assembly, resulting in the formation of multi-site ROS scavenging nanoparticles called PDN@AGL. In vitro and in vivo experiments demonstrated that PDN@AGL could protect intestinal tissues by reducing lipid peroxidation, lowering ROS levels and inhibiting ferroptosis during II/R injury. Furthermore, our study revealed, for the first time, that the regulation of the ATF3/SLC7A11 pathway by PDN@AGL may play a crucial role in mitigating II/R injury. In conclusion, our study confirmed the beneficial effects of PDN@AGL in combating II/R injury through the ATF3/SLC7A11-mediated regulation of ferroptosis and oxidative stress. These findings lay the groundwork for the potential application of PDN@AGL in the treatment of II/R injury.
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JOURNAL OF CHROMATOGRAPHY A
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2024
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IF 3.8
Yali Yang,Jia Chen,Xiaojing Liang,Bei Liu,Kaijun Quan,Xiuhui Liu,Hongdeng Qiu
In this paper, three imidazole- and C18- bifunctional silica stationary phases (Sil-Im-C18) were prepared by adjusting introduction interval of octadecyltrichlorosilane (ODS) and 3-imidazol-1-ylpropyl(trimethoxy)silane (TMPImS), which can be used for reversed-phase liquid chromatography (RPLC) and ion exchange chromatography (IEC) with adjustable performance. The successful preparation of Sil-Im-C18 were confirmed by the characterizations of elemental analysis, infrared spectroscopy (FTIR) and contact angle (CA). Chromatographic performance of Sil-Im-C18 were evaluated by the separation of Tanaka test mixture, alkylbenzenes, linear PAHs and a set of analytes with different properties (uracil, phenol, 1,2-dinitrobenzene and naphthalene), and compared with commonly used C18 column. It was found that the chromatographic performance of Sil-Im-C18 changed significantly with the difference in bonding amount of imidazole and C18. Sil-Im-C18 demonstrated the excellent separation performance towards polycyclic aromatic hydrocarbons (PAHs), phenylesters, phenylamines , phenols and inorganic anions, and notably, nucleobases and nucleosides can be separated using pure water as mobile phases . The van Deemter plot showed that the column efficiency of Sil-Im-C18-3 was 64,933 plate· m − 1 for naphthalene, indicated that Sil-Im-C18 was reasonably chromatographic columns. The RSD values of retention time were 0.22 %-0.61 % for 10 needles alkylbenzenes injected continuously at 50 °C to investigate thermal stability and repeatability, all the fluctuations of k of naphthalene were less than 2.3 % for Sil-Im-C18-1 during flushing 24 h with the mobile phase at different pH values (pH = 3 and 8), the retention time of alkylbenzenes were almost same for Sil-Im-C18-1 at different time, the RSD values of retention time of alkylbenzenes were 0.45 %-2.28 % for two batches Sil-Im-C18-1, revealing the excellent repeatability, thermal stability, durability and reproducibility of Sil-Im-C18, and implying a commercial prospect.
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EUROPEAN JOURNAL OF SOIL BIOLOGY
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2011
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IF 1.741
Xinying Zhang,Xiaoyan Liu,Chenglin Zhong,Zhengnan Cao,Fahui Liu,Lisha Chen,Shanshan Liu,Yan Hu
Phytoremediation of pyrene pollution by Scirpus triqueter in a stimulated wetland system has been studied. The results showed that pyrene removal was higher in the rhizospheric soils (49.8–60.8%) than that in the unplanted (17.5–41.6%) and non-rhizospheric soils (33.0–56.4%). The variation in microbial community compositions was investigated by analyzing phospholipid fatty acids (PLFAs) profiles in microbes under pyrene exposure. The microbial biomass , as revealed by PLFAs, decreased significantly with increasing pyrene concentration in all the three parts of soils. Specifically, the pyrene exposure inhibited the growth of fungi and some microorganisms (indicated by 14:0, 17:0, 16:1ω7c and 7Me17:0) to some degree. Principal component analysis (PCA) also revealed that all the fatty acid negatively correlated with the pyrene at higher concentration. However, the presence of S. triqueter enhanced the proportions of fungi, Gram-negative bacteria and aerobic bacteria, which possibly contributed to the degradation of pyrene. Total PLFAs in rhizospheric soils were profoundly higher than those in non-rhizospheric soils. The results indicated that S. triqueter might induce the colonization of bacteria in the stimulated wetland system, and led to a discrimination of microbial community, which might be one of the mechanisms on pyrene dissipation in phytoremediation system.
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JOURNAL OF HAZARDOUS MATERIALS
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2011
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IF 3.723
Xinying Zhang,Xiaoyan Liu,Shanshan Liu,Fahui Liu,Lisha Chen,Gang Xu,Chenglin Zhong,Pengcheng Su,Zhengnan Cao
The aim of this study was to determine the enhancement of Scirpus triqueter in the dissipation of pyrene and the interaction of pyrene with plant, soil enzymes and microbial community. The results indicated that the dissipation ratios of pyrene in the rhizospheric and non-rhizospheric soil were 64.65 ± 3.86% and 54.49 ± 2.74%, respectively, and were higher than that in the unplanted soil (42.60 ± 0.71%) at 80d after planting S. triqueter . The pyrene was toxic to S. triqueter , as evidenced by growth inhibition in height, diameter, shoot number and biomass during the planting period. The activities of dehydrogenase decreased significantly at the presence of pyrene in soils, and increased remarkably with the introduction of S. triqueter . It was found that the pyrene addition increased the ratios of fungal/total fatty acids and gram-positive/gram-negative, but the presence of S. triqueter decreased the ratios of gram-positive/gram-negative. A larger stress level was found in the pyrene treated soils without S. triqueter . The ratio of aerobic/anaerobic bacteria decreased with increasing pyrene concentration, but increased when S. triqueter was planted. The principal analysis of phospholipid fatty acid signatures revealed that microbial community structures in the rhizospheric and non-rhizospheric soil were similar, but different from those in the unplanted and control soil.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Yuqian Li,Haomin Chen,Wei Li,Beidou Xi,Caihong Huang
The remediation of sites co-contaminated with polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs) poses challenges for efficient and ecofriendly restoration methods. In this study, three strains ( Pseudomonas sp. PDC-1, Rhodococcus sp. RDC-1, and Enterobacter sp. EDC-1) were isolated from sites contaminated with PAHs and HMs. The constructed bacteria consortium was then immobilized using biochar, bentonite, and peat. The immobilized bacteria consortium (IBC) demonstrated efficient removal ability of phenanthrene (58.1 %-73.4 %) and benzo[ a ]pyrene (69.6 %-83.5 %) during 60 days. Additionally, the IBC decreased soil bacterial richness and diversity, but increased the relative abundance of Proteobacteria phylum and Ochrobactrum genus, which were capable of degrading PAHs. Soil microbial co-occurrence network with IBC was classified into three main modules, and 14 genera were identified as keystone taxa linked to PAHs degradation and HMs resistance. The IBC enhanced the dioxygenase metabolic pathways for PAHs degradation, including phthalic acid and salicylic acid pathways, which became the main driving factor affecting PAHs removal efficiency based on the structural equation modeling analysis. This study confirmed the potential application of the constructed IBC in the bioremediation of soil co-contaminated with PAHs-HMs, and provides insights into key removal mechanism and main driving factor of the enhanced elimination of PAHs.
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CHEMISTRY-A EUROPEAN JOURNAL
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2017
·Vol. 24
·期 1
·212-221
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IF 5.317
Jun Song,Yanlong Wei,Jiwen Hu,Guojun Liu,Zhengzhu Huang,Shudong Lin,Feng Liu,Yangmiao Mo,Yuanyuan Tu,Ming Ou
Graphical Gated delivery : pH-Responsive porous nanocapsules have been prepared from ternary graft copolymers and used as potential vehicles for controlled release of drugs, food, and bioactive compounds (see figure). In this work pH-responsive porous nanocapsules have been successfully prepared from a ternary graft copolymer, poly(glycidyl methacrylate)- g -[poly(2-cinnamoyloxyethyl methacrylate)- r -poly(ethylene glycol) methyl ether- r -poly(2-diethylaminoethyl methacrylate)] or PGMA- g -(PCEMA- r -MPEG- r -PDEAEMA). The graft copolymers were fabricated by grafting three types of polymer chains onto the backbone polymer by using click chemistry. These ternary copolymers underwent self-assembly to form vesicles in a DMF/water solvent mixture. While the MPEG chains served as the corona and stabilized the vesicles, the vesicle wall was composed of a dominant PCEMA continuous phase that was interspersed by PDEAEMA domains. After photo-cross-linking, the PDEAEMA domains were embedded in the structurally locked PCEMA wall. By decreasing the pH of the external solution, we were able to trigger the release of encapsulated pyrene due to the capsule wall becoming porous as a result of the PDEAEMA chains bearing positively charged amine groups stretching into the water. While these pH-responsive porous nanocapsules exhibited potential applications in drug delivery, detection and catalysis, the strategy reported in this contribution also represented a new paradigm for the design and preparation of other novel stimuli-responsive porous nanocapsules.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Zhiyuan Liu,Rui Sun,Yaxuan Huang,Fengyun Xu,Nan Li,Wei Zhang,Pengfei Ge,Wenke Zhang
Shikonin (SHK), an active naphthoquinone pigment isolated from the root of Chinese herbal medicine has been proven to have a significant therapeutic effect on breast cancer. However, the poor water solubility as well as the lack of tumor targeting restrict the practice application of SHK molecules as chemotherapeutic agents. Here, SHK drugs were chemically conjugated to polyethylene glycol (PEG) molecules via a disulfide bond (referred to as SHK-SS-PEG) through a facile one-step strategy. The conjugates exhibited an excellent water solubility of 12.96 mM, which is ca. 7807 times as high as that of pure SHK drugs. Noteworthily, the conjugates can self-assemble into spherical micelles with an average particle size of 106 nm, facilitating in vivo delivery as well as the accumulation in tumor tissues based on the enhanced permeability and retention (EPR) effect. Moreover, the disulfide bond enables rapid cleavage of micelles and efficient release of SHK molecules from the conjugates in response to reduced Glutathione (GSH) overexpressed within tumor cells. Thanks to the GSH-responsiveness release of SHK, the conjugate-based micelles (containing 6 μM SHK) resulted in the cell killing rate of 73 % for the MCF-7 breast cancer cells after 48 h incubation, which is 45 % higher than that for the HUVEC normal cells. All these collective beneficial properties make the SHK-SS-PEG conjugate a promising candidate for the treatment of many types of cancers.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Zhuo Chen,Zhiyang Lu,Weijun Tian,Bingkun Liu,Bingjie Huo,Jing Zhao,Mengyuan Zou,Ruijuan Zhang,Xinran Yu,Xinbo Wang
Pyrene (Pyr) and its derivatives are classified as Persistent Organic Pollutants (POPs), which exhibit significant toxicological effects and pose serious threats to ecosystems. Photocatalytic technology is increasingly employed for the remediation of POPs due to its effective and environmentally sustainable degradation capabilities. However, conventional photocatalytic materials, primarily in powder form, face challenges related to separation and recovery from aqueous environments, significantly limiting their practical application. In this study, we successfully synthesized a three-dimensional (3D) porous immobilized photocatalytic material by decorating Ag 3 PO 4 and BiOBr onto Ni foam (NF) using a hydrothermal method combined with continuous ionic layer adsorption. The results demonstrated Ag 3 PO 4 /BiOBr/NF exceptional light degradation capabilities, achieving over 90 % degradation of Pyr, 1-methylpyrene, and 1-hydroxypyrene, as well as over 40 % degradation of 1-nitropyrene under visible light irradiation over a duration of 5 h. Its degradation efficiency decreased by 12.49 % after five cycles, demonstrating its reusability. The roles of superoxide radicals ( O 2 – ) and holes (h + ) were critical in the degradation process. Furthermore, based on experimental findings, we proposed a Z-type heterojunction degradation mechanism for the Ag 3 PO 4 /BiOBr/NF composite, accompanied by an analysis of the potential degradation pathways for Pyr. Consequently, the recyclable immobilized photocatalytic materials developed in this research contribute novel insights into the photocatalytic degradation of POPs.
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JOURNAL OF CHROMATOGRAPHY A
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2025
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IF 4
Zichen Zhao,Ruiyang Ma,Juntao Wang,Qing Zhang,Miao Jing,Chun Wang,Qiuhua Wu,Zhi Wang
A boric acid functionalized hyper-crosslinked polymer (HCP), designated as NPCBA/TBM-HCP, was successfully synthesized via Friedel-Crafts reaction by copolymerizing N-phenylcarbazole-2-boronic acid (NPCBA) and 2,4,6-Tris(bromomethyl)mesitylene (TBM). The NPCBA/TBM-HCP showed a large surface area and a good adsorption property for phenylurea herbicides (PUHs). A method with NPCBA/TBM-HCP based solid phase extraction and high-performance liquid chromatographic detection was developed for the simultaneous analysis of PUHs in lake water, green tea drink and tomato samples. Under the optimized experimental conditions that the amount of the NPCBA/TBM-HCP was 30 mg, sample solution was 100 mL, sample loading rate was 4 mL min -1 , and eluent was 0.3 mL acetonitrile, the linear response for the PUHs was in the range of 0.06–80.0 ng mL -1 , 0.6–80.0 ng mL -1 and 0.9–200 ng g -1 for lake water, green tea drink and tomato samples, respectively, with a good linearity (the coefficients of determination ( r 2 ) ≥ 0.9916). The detection limits (S/N = 3) for lake water, green tea drink and tomato samples were 0.02–0.03 ng mL -1 , 0.2 ng mL -1 and 0.3–0.5 ng g -1 , respectively. The method recoveries for spiked samples were 80.0 %-119.1 % and RSDs were lower than 9.9 % for the determination. The method provides a new and feasible approach for the determination of phenylurea herbicide in real samples.
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PEDOSPHERE
·
2024
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IF 5.2
Xiaonuo ZHANG,Yaxi DENG,Goujian CHI,Hong LÜ,Hongxia ZHAO
ABSTRACT Rhizoremediation has emerged as a burgeoning approach for the removal of petroleum hydrocarbons (PHCs) from soil, with a primary emphasis on terrestrial plant systems. However, the mechanism on how soil microbiomes influence the dissipation of PHCs within a hygrophyte planting system has yet to be fully elucidated. This work concentrated on investigating the potential evolution of soil microbiomes and their effect on the PHCs dissipation within the Suaeda salsa (L.) Pall. planting system using the pot experiment. Two representative compounds, namely polycyclic aromatic hydrocarbons (PAHs) and n-alkanes, were used as target PHCs. The findings revealed a significant efficiency in the dissipation of petroleum hydrocarbons (PHCs) in soil, particularly with respect to n-alkanes. The high dissipation efficiency of PHCs was the synergistic result of both the root accumulation and the microbial biodegradation. The key microbes involved in PHCs dissipation were revealed, with the dominant phylum of Protobacteria and genus of Salinimicrobium . The alterations in microbial diversity and abundance were closely associated with the root exudation and PHCs exposure. Significant differences in enzyme activity, which serves as an indicator of soil health and fertility, were observed between the rhizospheric and non-rhizospheric soil, attributed to root exudation. This study offers novel insights into the phytoremediation potential for Suaeda in PHC-contaminated soil and serves as a valuable scientific reference for the phytoremediation of such soils.
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