ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 21
·60574-60589
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IF 5.8
Zhang Xiaoting,Liu Yang,Qu Lingbo,Han Runping
In this study, a green adsorbent (Fe 3 O 4 -UiO-66-NH 2 ) with the ability of addressing the issues of separation and recovery of UiO-66-NH 2 is obtained using a simple co-precipitation method under environmentally benign conditions. Various characterization techniques are utilized for evaluating the properties of the developed adsorbent. The capability of Fe 3 O 4 -UiO-66-NH 2 towards 2,4-dichlorophenoxyacetic acid (2,4-D) and glyphosate (GP) from solution is explored. The results revealed that the magnetization process did not destroy the crystal structure of UiO-66-NH 2 , which ensured that Fe 3 O 4 -UiO-66-NH 2 had good adsorption performance for 2,4-D and GP. The adsorption processes showed a wide pH application range, high salt tolerance, and regeneration performance as well as an excellent adsorption rate. Results from thermodynamic study showed that both processes were spontaneous and endothermic. The unit uptake ability of Fe 3 O 4 -UiO-66-NH 2 for 2,4-D and GP reached up to 249 mg·g −1 and 183 mg·g −1 from Langmuir model at 303 K, respectively. When solid–liquid ratio was 2 g·L −1 , Fe 3 O 4 -UiO-66-NH 2 can reduce the content of 2,4-D or GP with the initial density of 100 mg·L −1 below the drinking water requirement limit. In addition, the reusability efficiency of Fe 3 O 4 -UiO-66-NH 2 towards 2,4-D and GP was found to be 86% and 80% using 5 mmol·L −1 NaOH as eluent. Analysis of simulated water samples indicated that Fe 3 O 4 -UiO-66-NH 2 could achieve the single or simultaneous removal of 2,4-D and GP from wastewater. Summarily, Fe 3 O 4 -UiO-66-NH 2 as a green adsorbent can serve as an alternative for removing 2,4-D and GP from water body.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Zengyue Chen,Yunfeng Li,Fei Tian,Xin Chen,Zhansheng Wu
In this work, a green reaction route for the preparation of BiVO 4 /g-C 3 N 4 composite is constructed using the acetic acid and reusable ethylene glycol system combined with the microwave method. The rice grain-like BiVO 4 is successfully deposited on the surface of hollow tubular g-C 3 N 4 to form a S-scheme heterojunction within 25 min. The performance of the prepared photocatalysts is evaluated by removing glyphosate, methyl orange and tetracycline hydrochloride from simulated agricultural and urban runoff. The degradation evaluation results show that acetic acid in this route could play a better induction role compared to the conventional inducer nitric acid, while the ethylene glycol in this route can be recycled. The recovery of ethylene glycol could reach more than 85%, and the performance of the produced photocatalyst will not be decreased after the recovery of ethylene glycol reaches 20 times. The BV/CN 60 -R 20 sample has the highest photocatalytic activity for glyphosate removal under simulated sunlight irradiation, which is 14.5 times and 9.7 times higher than that of pure BiVO 4 and g-C 3 N 4 , respectively. In summary, the establishment of the ethylene glycol and acetic acid system not only provides a new perspective for the replacement of strong acids in the preparation of BiVO 4 -based photocatalyst but also provides a reference for the construction of other harmless and recyclable systems.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xueli Luo,Gengli Huang,Yuchen Li,Jie Guo,Xiaokai Chen,Youwen Tan,Wenzhi Tang,Zhonghong Li
Ultrasensitive, reliable and prompt pre-warning of pesticide residue is critically significant to ensure environmental and food safety. Herein, a novel nanosensor fabricated by in situ encapsulating N -doped carbon dots into a porphyrin metal–organic framework was developed to ratiometric fluorescence (RF) and smartphone-integrated portable platform colorimetric dual-mode detection of glyphosate (GLP). The sensor responded to GLP by RF in the range of 0.01–6.67 mg/L with low limit of detection of 9.06 µg/L. Besides, a noticeable color evolution from pink purple to green under nature light was observed upon addition of GLP, thus a portable smartphone-integrated colorimetric platform was fabricated for visual colorimetric detecting GLP by incorporating the sensor with a smartphone and a 3D-printed mini-device. Interestingly, the platform can detect GLP merely by virtue of a built-in flashlight of the smartphone and Color Analyser Application. Additionally, desirable recoveries of 94.0–112.5 % and 90.0–113.6 % in spiked real samples were respectively obtained for RF and colorimetric channel. Furthermore, a one-to-one colorimetric logic gate (RGB vs GLP concentrations) offered the possibility of intelligent monitoring of GLP. Summarily, the versatile sensor satisfied laboratory instrumental analysis and was further integrated as a smartphone-assisted platform to furnish a novel tactic for quick GLP monitoring, particularly for resource-constrained settings.
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ENVIRONMENTAL POLLUTION
·
2021
·
IF 8.071
Hongwei Yu,Jianfeng Peng,Xiaofeng Cao,Yajun Wang,Zhiqiang Zhang,Yan Xu,Weixiao Qi
Glyphosate and microplastics are widely found in marine, terrestrial, and freshwater environments due to their globally widespread application. Further, they have proved to have specific ecotoxicity effects on aquatic plants. However, few studies have focused on the effects of small plastic particles and glyphosate, or especially, their combined effect on vascular plants in freshwater ecosystems . This study aimed to conduct a simulated greenhouse experiment to investigate the ecotoxicity of polystyrene microplastics and glyphosate on the floating plant Salvinia cucullata by exposure to fluorescent polystyrene microplastics (1 μm; concentration, 3, 15, and 75 mg/L), glyphosate (5, 25, and 50 mg/L), and a mixture of the two (3 + 5, 15 + 25, and 75 + 50 mg/L) for seven days. Glyphosate significantly reduced the relative growth rate, photosynthetic capacity, and root activity of S. cucullata . Polystyrene microplastics did not significantly influence photosynthesis or leaf morphological characteristics but they significantly reduced relative growth rate and root activity in S. cucullata , indicating that the effects of microplastics on aquatic plants are potentially associated with different organs exposed to pollution. Polystyrene microplastics and glyphosate activated the plant antioxidant defense systems by increasing antioxidative enzyme activities including, superoxide dismutase, ascorbate peroxidase, and catalase to cope with oxidative stress . Synergistic effects (only observed in percent leaf yellowing) were observed when S. cucullata was exposed to a high concentrations (≥15 + 25 mg/L) of glyphosate and microplastics. Our results indicate that pervasive microplastics and herbicide contamination in freshwater may potentially affect the growth of aquatic plants.
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MATERIALS & DESIGN
·
2018
·
IF 4.525
Tao Long,Yin Xu,Xiaojian Lv,Jingwen Ran,Shuibin Yang,Lanying Xu
A facile one pot method has been applied to fabricate large-sized freestanding titania-silica monolithic aerogels (TSMA). The obtained TSMA was characterized by scanning electron micrograph (SEM), Energy dispersive spectrometer (EDS), X-ray powder diffraction (XRD) and nitrogen adsorption measurements. SEM results show the TSMA has bicontinuous inner structure and large macropores (through-pores), which are favorable for the liquid infiltration. XRD results demonstrate the TSMA is anatase and nitrogen adsorption results reveal its high specific surface area of 445.9 m 2 /g. To maximize the catalytic activity of the as-prepared TSMA, an annular photocatalytic reactor has been specially designed and fabricated. With the apparatus, the as-prepared TSMA exhibited outstanding catalytic performance, which degraded glyphosate completely within 180 min of photocatalytic reaction. The kinetic rate (k value) of the photocatalytic reaction reaches 0.0242 min −1 . Ion chromatography results indicate that glyphosate was mainly mineralized to inorganic ions such as PO 4 3− and NO 3 − , etc.
研究领域:
环境化学
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材料科学
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催化化学
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水处理技术
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纳米材料应用
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124400
·
IF 7.5
Ya-Tong Liu,Xi-Yue Luo,Bu-Xiao Wu,Yi-Wen Cui,Jun-Wen Wang,Ying-Kai Yuan,Yue-Li Zou,Li-Xia Zhao
Glyphosate, a widely used organophosphorus herbicide, poses significant threats to ecological security and food safety due to its residue accumulation. A near-infrared (NIR) fluorescent probe, HDI, was designed and synthesized for the detection of glyphosate (Glyp) based on a Zn 2 + -mediated competitive coordination mechanism. HDI formed a non-fluorescent complex with Zn 2+ , which was selectively disassembled by Glyp through phosphonate-carboxylate chelation, resulting in a restored "off–on" NIR emission at 620 nm. The coordination mode and displacement mechanism were corroborated by Job's plot, HRMS, 1 H NMR, FT-IR, and DFT calculations. The HDI-Zn 2+ system exhibited a low limit of detection (10.1 nM), a broad tolerant pH range (5−8), and high selectivity against 29 common ions and biomolecules. Satisfactory spike-recovery rates (95.3%-107%, RSD < 4.90%) were obtained in environmental water, soil, and food extracts. Furthermore, Glyp was visualized in living HeLa cells, zebrafish embryos, and mice with low cytotoxicity, and fluorescence signals were predominantly localized in the liver. This work establishes a reliable chemosensing platform for trace glyphosate surveillance in food safety and environmental monitoring.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
·
IF 7.7
Limin Hou,Xuelian Hu,Wanyue Pang,Ruoyu Cao,Shuo Wang,Wenxiu Wang,Xiuying Liu,Yiwei Tang
A novel homogeneous fluorescence analysis method was developed for the simultaneous detection of glyphosate (GLY) and thiamethoxam (TMX) using aptamer-functionalized carbon dots and polymer dots in conjunction with complementary chain-modified silver nanoparticles (AgNPs). This analytical strategy is based on the principles of fluorescence resonance energy transfer and an indirect competition reaction model. The fluorescence intensity shows a linear correlation with the logarithm of GLY and TMX concentrations over the range of 0.5–1000 ng/mL. The limits of detection for GLY and TMX were determined to be 0.12 ng/mL and 0.10 ng/mL, respectively. The method was successfully applied to the detection of GLY and TMX in various matrices (tap water, apple, pear, and rapeseed oil), with the results being verified by HPLC. This study presents a cost-effective, rapid, and highly sensitive detection method, which holds great promise for future applications in environmental and food-related fields.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Zi-Hang Zhang,Zuo-Qin Liang,Jia-Hao Tang,Pu Wang,Chang-Qing Ye,Xiao-Mei Wang
The development of universal methods for pesticide residue detection in plant-derived foods is significantly impeded by strong UV–visible absorption from natural pigments. These pigments induce inner filter effects that distort fluorescence signals and compromise the accuracy of conventional sensing platforms. In this study, we developed a Cu 2+ -activated dye-sensitized upconversion nanoprobe for ultrasensitive glyphosate (Gly) detection in pigment-rich plant-derived foods. The probe integrates near-infrared cyanine dye (CyPh) with core-shell upconversion nanoparticles β-NaYF 4 :Yb20 %,Er2 %@NaYF 4 :Yb10 %,Nd10 % (UNs), utilizing 808 nm excitation and 655 nm upconversion emission to circumvent pigment interference. Cu 2+ quenches the upconversion luminescence by forming a CyPh complex; subsequent Gly addition restores luminescence through competitive Cu 2+ chelation. Owing to efficient Förster resonance energy transfer from CyPh to UNs, the nanoprobe demonstrated high sensitivity with a detection limit of 19.01 nM in aqueous solutions, along with rapid response characteristics. Spike recovery experiments conducted with dark matrix samples yielded Gly recovery rates of 97.0–104.0 %, accompanied by relative standard deviations below 2.95 %. To enable field applications, a semi-quantitative analysis system based on smartphone color recognition was developed for rapid on-site Gly screening through fluorescence color changes. Notably, the probe exhibited excellent biocompatibility and enabled simultaneous imaging of Cu 2+ and Gly in live cells. This work presents a powerful tool for the rapid and accurate detection of Gly in both complex environmental and biological matrices.
研究领域:
分析化学
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环境科学
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纳米技术
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食品安全
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生物成像
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yongshuang Hu,Guqing Xiao,Yi Sun,Qiudong Meng
Glyphosate, the most widespread organophosphorus herbicide, enters lakes, rivers and groundwater through rainwater and surface runoff. It is very important to remove glyphosate from neutral water bodies. A new strategy for the development of glyphosate adsorbent was implemented through in situ nanoconfinement of hydrated ferric oxide (Fe 2 O 3 ·nH 2 O) in an anion exchange resin D201 (D201/Fe 2 O 3 ·nH 2 O). Fe 2 O 3 ·nH 2 O was confined within the 12–140 nm pores of D201/Fe 2 O 3 ·nH 2 O, exhibiting uniform distribution, nanoscale and amorphous state. Benefiting from the cross-linked polystyrene network, D201/Fe 2 O 3 ·nH 2 O featured excellent chemical stability in weakly acidic (pH > 3), alkaline and salt solutions. Compared with its host D201, D201/Fe 2 O 3 ·nH 2 O exhibited larger rate constant k 1 , larger glyphosate capacity and superior selectivity at pH = 7.0 ± 0.05. Corresponding its bifunctional groups of -N + (CH 3 ) 3 and Fe 2 O 3 ·nH 2 O, D201/Fe 2 O 3 ·nH 2 O could adsorb glyphosate through the two mechanisms of the ligand exchange between glyphosate anion and hydroxyl group, as well as the anion exchange between Cl − and glyphosate anion. D201/Fe 2 O 3 ·nH 2 O showed the commendable reusability and maintained constant glyphosate adsorption capacities at 161.5–164.5 mg/g in five consecutive adsorption-regeneration cycles. At the injection glyphosate concentration of 1.1 mg/mL, the effective processing volumes of D201/Fe 2 O 3 ·nH 2 O were 3.81 and 3.21 times that of D201 at two breakthrough points.
研究领域:
环境科学
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材料科学
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化学工程
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水资源保护
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污染物处理
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Jiaxuan Chen,Kai Shi
Accurate detection of glyphosate (GLY) residues is essential for protecting public health, ensuring food safety, and preventing environmental pollution caused by excessive or improper herbicide application. Based on the asymmetric CRISPR/Cas12a system as a signal amplification technique, with phosphorothioate-modified hairpin G-quadruplex (psHG4) acting as a signal probe, a platform named ACC-GLY is developed for the sensitive and accurate detection of GLY. In the designed ACC-GLY platform, the target GLY specifically binds to the aptamer, and the cascading signal amplification strategy, driven by the DNase activity of a single Cas12a, is initiated by two competitive guide RNAs. Under the influence of Cas12a's DNase activity, the psHG4 probe is cleaved, releasing the psG4 sequence. The released psG4 sequence then binds to Thioflavin T (ThT), forming a complex that generates a fluorescence signal. Under optimal conditions, the detection platform can specifically detect GLY at a concentration as low as 0.3 pM. The detection platform demonstrates significant capability in detecting GLY in tap water and corn samples, highlighting its vast potential for applications in environmental monitoring and food safety. To the best of our knowledge, this is the first study to utilize the CRISPR/Cas12a system for GLY detection.
研究领域:
分析化学
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生物传感器
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环境监测
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食品安全
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分子生物学
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Zhixiang Xu,Dongshan Chen,Xingyu Duan,Yuning Chen,Caiqing Li,Siyuan Li,Yitao Ma,Bin Huang,Xuejun Pan
Dissolved inorganic and organic phosphorus is a major factor in triggering the eutrophication of water bodies. At present, a novel Zr 4+ cross-linked sodium alginate encapsulated in Ce-UIO-66 microspheres (Zr-SA/Ce-UIO-66) was prepared and systematically characterized. Its ability for capture of phosphate and glyphosate in their single and binary systems has been investigated comprehensively. Results showed that Zr-SA/Ce-UIO-66 exhibits excellent phosphate adsorption, achieving 92 % removal and a maximum adsorption capacity of 125 mg P/g at 313 K. Diversified mechanisms, including electrostatic attraction, ligand exchange and hydrogen bonding, have cooperatively participated in phosphate removal. Interestingly, in phosphate and glyphosate mixed solutions, the presence of phosphate significantly enhanced the removal of glyphosate for the formation of complexes between phosphate ions and the adsorbent. And that was similar to the presence of glyphosate in phosphate adsorption. Simulated wastewater experiments demonstrated the adsorbent’s practical application in water contaminated with both organic phosphorus and glyphosate composites and its potential for recycling and reuse.
研究领域:
环境科学
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材料科学
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FOOD CHEMISTRY
·
2024
·
IF 8.5
Ting Zhang,Miao Tang,SiYi Yang,Huanbao Fa,Yongzhong Wang,Danqun Huo,Changjun Hou,Mei Yang
Given the significant and potential fatal implications of glyphosate (GLY) residues on human health and the integrity of ecosystems, their presence has garnered substantial global concern and scrutiny. Herein, we introduced a pioneering colorimetric sensing platform, the first of its kind, based on ternary metal-organic frameworks (ZnCo-ZIFs@MIL-101(Fe)). This innovative platform enabled ultra-sensitive, affordable, portable and rapid on-site detection of GLY. This platform achieved a wider linear range for GLY of 0.02–40 μg/mL with an exhibiting remarkable detection limit of 1 ng/mL, which was attributed to the electronic hybridization of the Fe 3+ , Co 2+ , and Zn 2+ metal centers of ZnCo-ZIFs@MIL-101(Fe), significantly enhancing the composite's catalytic performance. The assay was successfully employed to detect GLY in food and herb samples. Moreover, to meet the demand of in-field detection for GLY, a smartphone detection method based on ZnCo-ZIFs@MIL-101(Fe) with visual, intelligent, and portable features was fabricated. This detection concentration range of GLY was 0–1 μg/mL, and the limit of smartphone detection was 23 ng/mL. Furthermore, this sensor seamlessly integrated with smartphones and paper-based microfluidic chips (μPADs), which constructed a portable test strips-smartphone sensing platform for facilitating real-time and on-site visual quantitative detection of GLY. The detection concentration range was 0–1 μg/mL, and the limit was calculated as low as 75 ng/mL. The assay was highly adaptable in practical applications. In summary, our study paved a novel pathway for the design and utilization of multi-metal MOF nanozymes in on-site pesticide monitoring.
研究领域:
分析化学
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环境科学
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食品科学
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高影响因子
危险品化学品经营许可证（带存储）