Journal of Environmental Chemical Engineering
·
2021
·
IF 5.909
Xiaoping Wang,Yunjiang Gong,Jiayuan Qin,Jun Cheng,Cheng Gong,Debin Jiang
The cyclic utilization of industrial waste salt can not only solve its environmental pollution problem but also reclaim the available resources. The deep removal of organic pollutants is one of the main challenges for the reuse of waste salt. In this study, dielectric barrier discharge (DBD) plasma is used to remove organic pollutants from simulated industrial waste salt containing glyphosate . Experimental results indicate that DBD plasma can reduce deeply the content of organic matters in waste salt. The decrease of total organic carbon (TOC) is affected by discharge voltage, gas flow rate, initial TOC and water content. For the simulated waste salt with an initial TOC content of 48.1 mg/kg, the finial TOC content decreased to 9.5 mg/kg after a 25 min DBD plasma treatment at the discharge voltage of 14.0 kV, the water content of 10%, and the air flow rate of 0.5 L/min. The maximum energy efficiency of TOC removal is 116.5 mg/(kW.h). A reaction mechanism of refining of the waste salt was proposed based on the detection and analysis of the degradation intermediates and mineralized products. The results of this study show that non-thermal plasma can be used to refine the organic matter contained waste salt with no production of waste water, which has a good prospect of research and application.
研究领域:
环境科学
·
化学工程
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ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Shengmei Tai,Zhijuan Qian,Hongxin Ren,Alberta Osei Barimah,Chifang Peng,Xinlin Wei
A colorimetric assay based on an enzyme-inhibition strategy is promising for the on-site detection of pesticide residues . However, very few works of pesticide detection were reported based on the inhibition toward nanozymes although nanozymes have demonstrated many advantages in sensing various targets. Herein, a facile colorimetric detection for Glyp was developed based on β [email protected] enzyme mimics. The β [email protected] with high peroxidase-like activity was synthesized using random DNA double strands as template and β -CD as surface ligand. β [email protected] could catalyze the H 2 O 2 -3,3′,5,5′-tetramethylbenzidine (TMB) system. The oxidation product OxTMB with a blue color and presented a large absorption signal at 652 nm. However, Glyp could destroy the synergic effect between redox doublet (Cu 2+ /Cu + ) on the β [email protected] A-CuNCs surface, resulting in the inhibition of the peroxidase-like activity. Colorimetric detection for Glyp could be established by detecting the changes of absorption signal at 652 nm. The linear range was 0.02–2 μ g/mL and the detection limit was 0.85 ng/mL (3δ/s). The method was applied in measuring Glyp spiked in lake water and various food samples. This method had rapidness, high sensitivity, and selectivity advantages, indicating the high application potential in monitoring Glyp residue in food.
研究领域:
分析化学
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环境科学
·
食品安全
·
农业化学
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高影响因子
MOLECULES
·
2023
·Vol. 28
·期 5
·2398
·
IF 4.6
Meng Wang,Jun Qiu,Chennuo Zhu,Yunyan Hua,Jie Yu,Lulu Jia,Jianhong Xu,Jianlin Li,Qianjin Li
Due to the massive use and abuse of pesticides, practices which have led to serious threats to human health, the research community must develop on-site and rapid detection technology of pesticide residues to ensure food safety. Here, a paper-based fluorescent sensor, integrated with molecularly imprinted polymer (MIP) targeting glyphosate, was prepared by a surface-imprinting strategy. The MIP was synthesized by a catalyst-free imprinting polymerization technique and exhibited highly selective recognition capability for glyphosate. The MIP-coated paper sensor not only remained selective, but also displayed a limit of detection of 0.29 µmol and a linear detection range from 0.5 to 10 µmol. Moreover, the detection time only took about 5 min, which is beneficial for rapid detection of glyphosate in food samples. The detection accuracy of such paper sensor was good, with a spiked recovery rate of 92–117% in real samples. The fluorescent MIP-coated paper sensor not only has good specificity, which is helpful to reduce the food matrix interference and shorten the sample pretreatment time, but it also has the merits of high stability, low-cost and ease of operation and carrying, displaying great potential for application in the on-site and rapid detection of glyphosate for food safety.Keywords:molecular imprinting;paper sensor;glyphosate;pesticide residues;rapid detection
研究领域:
分析化学
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环境科学
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食品安全
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PubMed
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Frontiers in Chemistry
·
2022
·
IF 5.545
Qin Yingfeng,Huang Ruiqi,Ye Gao-Jie
The analysis of glyphosate is essential to agricultural production, environment protection and public health. Herein, we proposed a fast and convenient “on-off-on” fluorescence platform for sensitive detection of glyphosate via Cu2+ modulated g-C3N4 nanosheets. The fluorescence of the system was quenched by Cu2+. With the presence of glyphosate, the fluorescence could be restored due to the formation of Cu2+- glyphosate complex. The proposed method was cost-effective with label-free and enzyme-free. Moreover, it exhibits high sensitivity with a low detection limit of 0.01 μg/ml. Furthermore, the proposed method has been successfully monitored glyphosate in real samples.
研究领域:
农业科学
·
环境科学
·
分析化学
·
公共卫生
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PubMed
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ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Runran Ma,Lizhu Fu,Nan Long,Haipeng Guo,Yujiao Hou,Ying Li,Peng Li,Jiabo Wang,Lidong Zhou,Weijun Kong
In this work, a novel ratiometric fluorescent nanosensor by coupling mesoporous silica spheres-coated nitrogen-doped carbon dots (N-CDs@SiO2) and bovine serum albumin-stabilized gold nanoclusters (BSA-AuNCs) was developed for sensitive detection of glyphosate. BSA-AuNCs nanocomposites were covalently connected onto the surface of amino-functionalized N-CDs@SiO2 nanospheres, causing the core-satellite probes with two fluorescence emissions at 436 and 651 nm, respectively, under a single excitation of 360 nm. The N-CDs@SiO2@BSA-AuNCs “signal on–off–on” ratiometric fluorescent probes could realize highly selective differentiation and accurate detection of glyphosate based on the fluorescence quenching of Cu2+ on BSA-AuNCs and glyphosate-induced fluorescence recovery due to the strong complexation of glyphosate toward Cu2+. The developed ratiometric fluorescent nanosensor exhibited excellent selectivity to glyphosate, wide detectability in a concentration range of 5–100 ng/mL, high sensitivity with a low detection limit of 3.4 ng/mL, as well as fascinating reliability and practicability in real malt samples with recoveries of 94.81–101.61%. This study provides a universal platform for versatile sensing of more trace analytes in complex matrices and can be extended for wide application in the environment and food safety fields.
研究领域:
分析化学
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食品安全
·
环境科学
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2023
·
IF 4.3
Kuan Wang,Bin Jiao,Haixiang Gao,Xinglu Pan,Xiaohu Wu,Jun Xu,Fengshou Dong,Yongquan Zheng
Persistent weed growing in herbicide-resistant maize and soybean fields is controlled increasingly by glyphosate (GLY) and glufosinate-ammonium (GLU). There is increasing concern that consumers may be exposed to herbicide residues . A Total of 224 samples involved supervised trials and market sampling were carried out. And the levels of GLY and GLU were determined in maize and soybean samples by UPLC−MS/MS method. The residues of GLY and GLU were at a low level in all samples and ranged from <0.04 to 0.29 mg/kg and <0.04 to 0.91 mg/kg, respectively. Deterministic and probabilistic models were used to assess the dietary risk, and the highest risk quotient (RQ) values of GLY and GLU were 2.24 × 10 −4 and 3.27 × 10 −2 , respectively. The RQs of GLU are significantly higher than that of GLY. Risk assessment results showed that GLY and GLU residues should not pose serious health risks to Chinese consumers.
研究领域:
农业科学
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食品安全
·
毒理学
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INORGANIC CHEMISTRY COMMUNICATIONS
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2023
·
IF 3.8
You-Ping Jin,You Lu,Yue Gao,Qing Li
The sensitive and selective detection of glyphosate (Gly) in the environment is urgently need because it has significant implications for human health and environmental safety. In this work, a GSH-AuNCs/Cu 2+ sensing probe was fabricated via the coordination between Cu 2+ and GSH-AuNCs, which resulted in the suppression of the fluorescence of GSH-AuNCs. Glyphosate can competitively grasp Cu 2+ from GSH-AuNCs/Cu 2+ , leading to fluorescence recovery. Thereby, a simple and sensitive “turn-on” fluorescence strategy was developed for the quantitative detection of glyphosate. The linear range of glyphosate detection is 0.25 ∼ 1.25 μM, with a detection limit of 92.16 ng/mL. This method was demonstrated selectivity, fast response, and sensitivity, making it suitable for the quantitative determination of glyphosate in real water samples. Furthermore, a paper-based test strip was constructed using the sensing probe, which enabled on-site visual and semiquantitative detection of Gly. Overall, our strategy provides new opportunities for determination of organophosphorus pesticides in the environment.
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Carbon Letters
·
2023
·Vol. 33
·期 7
·1935-1945
·
IF 4.5
Wang Qian,Wang Miao,Zheng Lufei,She Yongxin,Wang Jing,Jia Minghong,Abd El-Aty A. M.
The widespread and extensive use of glyphosate in agriculture has raised concerns about its potential impact on the quality and safety of agricultural products. Conventional detection methods require long analysis times, making them impractical for the rapid detection of large quantities of samples. Therefore, developing a fast and simple detection system for glyphosate pesticide residues is urgent. In this study, the development of a facile fluorescence probe synthesized using a simple one-pot hydrothermal method for the determination of glyphosate is an important step toward addressing the need for a fast and simple detection system. The present sensor was created using bovine serum albumin (BSA) as a precursor, and the sensor operates by producing an “off–on” fluorescent signal. The bovine albumin-derived BSA-CDs emitted light yellow fluorescence, but this fluorescence was quenched (or suppressed) by the presence of Cu 2+ ions. However, the fluorescence can be restored by the presence of glyphosate, which interacts with the Cu 2+ ions to form a complex and release the BSA-CDs from suppression. The functional groups in glyphosate can capture Cu 2+ and break the BSA-CDs/Cu 2+ combinatorial system. The BSA-CDs/Cu 2+ fluorescence quenching system had good selectivity for glyphosate. The detection limit of the BSA-CD/Cu 2+ fluorescence sensor was 0.05 µg/mL. This developed method was utilized to successfully detect glyphosate in Chinese wheat. The average recoveries ranged from 98.9 to 100.7%, with a relative standard deviation < 3.0%, showing good prospects for practical applicability.
研究领域:
农业科学
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分析化学
·
环境科学
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Journal of Cleaner Production
·
2025
·
IF 10
Yingxi Zhang,Hanghang Zhang,Chong Cao,Pengyue Zhao,Mingming Yin,Manli Yu,Qiliang Huang,Lidong Cao
Glyphosate isopropylammonium salt (GIS) is widely applied in global agricultural production owing to its high herbicidal efficiency and low cost. However, droplet drift is the main cause of GIS missing the target area and damaging the surrounding environment, thus necessitating the development of novel strategies to increase pesticide utilization and improve agricultural sustainability. Herein, a simple and scalable method has been developed for reduced droplet drift and enhanced target deposition of GIS via a sprayable hydrogel assisting by octadecylamine-modified polyacrylic acid (P(AA/C 18 ). Hydrogel tablets of GIS (P (AA/C 18 )@GIS) are formulated from P(AA/C 18 ) and GIS without other additives, which demonstrates the advantages of convenient transportation, environmental friendliness and low cost. Dilution of the P(AA/C 18 )@GIS tablets with water affords liquid GIS hydrogel, which inhibits breakage and rebound behavior upon impact with the leaf surface. Wind tunnel tests showed that the droplet drift volume of P(AA/C 18 )@GIS at 4 m from the nozzle was 40.89 μL, which was 85.3 % and 78.96 % less than those of GIS aqueous solution (GIAS) and commercially available GIS liquid (GISS), respectively. Moreover, droplet deposition was significantly lower in non-target regions compared to those of GIAS and GISS, with a minimum reduction of 32.2 %. The herbicidal ability of P(AA/C 18 )@GIS against barnyardgrass was comparable to that of GISS. Spraying the carrier material had no effect on the growth of conventional maize, while P(AA/C 18 )@GIS showed safety in the growth of glyphosate-resistant cotton. This research promotes sustainable agricultural development by effectively addressing pesticide drift and its associated issues.
研究领域:
农业化学
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农药科学
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环境科学
·
高分子材料
·
作物保护
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产品关联
DOI
高影响因子
TALANTA
·
2026
·
IF 6.1
Mengjun Wang,Fanjie Xue,Miao Chen,Zheng Liu,Yi He
Herein, a colorimetric/fluorescence dual-mode sensor was developed for ultrasensitive detection of glyphosate, utilizing a Cu-based quasi-metal-organic framework NENU-5 (QN-5) and green-emissive carbon dots (GCDs). QN-5 mimics laccase activity by catalyzing the conversion of oxygen (O 2 ) into superoxide radical (·O 2 − ), which then oxidizes the phenolic substrate 2,4-dichlorophenol (2,4-DP) in the presence of 4-aminoantipyrine (4-AP) to generate a distinct red quinone imine (λ Abs = 510 nm, QI). The generated QI quenches the fluorescence of GCDs via the inner filter effect. However, the strong complexation between glyphosate and Cu 2+ inhibits the catalytic activity of QN-5, thereby reversing the colorimetric and fluorescence signals. The developed dual-mode sensor exhibits excellent sensitivity, achieving detection limits of 11 nM in fluorescence mode and 17 nM in colorimetric mode, with recoveries ranging from 92.50 % to 102.85 %. This sensor also exhibits satisfactory selectivity and anti-interference in real samples of soybean, soil, and river water.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·Vol. 74
·期 28
·22312-22323
·
IF 6.7
Peng Huajie,Gao Di,Xiao Zhengyue,Yue Zhixiang,Xu Peng,Qiu Ping
Compared with natural-enzyme-based detection strategies,
nanozymes
offer notable advantages in stability, environmental tolerance, and
cost-effectiveness. In this study, we designed and synthesized a Pt@Fe-MIL-88
composite with both oxidase (OXD)-like activity and intrinsic fluorescence.
The material efficiently catalyzes 3,3 ′ ,5,5 ′ -tetramethylbenzidine
(TMB) oxidation, generating a color change while quenching its fluorescence.
Glyphosate (Gly) specifically inhibits the OXD-like activity of Pt@Fe-MIL-88,
reducing oxTMB production and thereby alleviating fluorescence quenching,
enabling dual colorimetric and fluorometric signal readout. The inhibition
mechanism was elucidated through FTIR, XRD, XPS characterization,
molecular dynamics simulations, and DFT calculations. Accordingly,
a natural-enzyme-free, colorimetric-fluorometric dual-mode sensing
platform for Gly was established. The platform exhibits high sensitivity,
excellent selectivity, and strong anti-interference capability, with
accuracy and reliability validated by spike recovery tests in real
samples. This work presents a new strategy for developing stable,
rapid, and low-cost multimodal detection methods for pesticide residues.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Li Wang,Kang Wei,Congtian Yu,Zhengwu Wang,Lurong Xu,Yang Wei,Xinlin Wei
In response to the urgent public demand for food safety and ecological protection, the sensitive detection and efficient removal of glyphosate (GPS) are of paramount importance. Herein, a multifunctional aerogel (Ru@ZrMOFs@AG) based on agarose (AG) and multi-emissive metal organic frameworks was rationally designed to simultaneously achieve colorimetric-fluorescence dual-mode detection and high-efficiency removal of GPS. The fabricated Ru@ZrMOFs@AG aerogel exhibited exceptional adsorption performance towards GPS pesticides, with a maximum adsorption capacity reaching 133.87 mg/g, and maintained good reusability following five consecutive adsorption/desorption cycles. Particularly, this composite material is endowed with dual-emission fluorescent characteristics (with emission peaks at 450 nm and 600 nm), while simultaneously exhibiting remarkable peroxidase-like activity. In the presence of hydrogen peroxide, it efficiently catalyzes the oxidation of colorless o-phenylenediamine into yellow 2,3-diaminophenazine. Notably, upon introduction of GPS into the system, the fluorescence intensity of Ru@ZrMOFs@AG at 450 nm significantly increased, whereas the emission at 600 nm remained stable; concurrently, GPS markedly inhibited its peroxidase-mimicking activity, leading to a decrease in the system’s absorbance. This dual-mode sensor enabled ultra-trace quantification of GPS, with detection limits of 0.98 ng/mL and 2.11 ng/mL for the ratiometric fluorescence and colorimetric modalities, respectively. Therefore, the developed Ru@ZrMOFs@AG aerogels combine stable fluorometric and colorimetric performance, exceptional adsorption capacity, and facile recyclability, offering an economically efficient and environmentally friendly solution for the simultaneous removal and monitoring of GPS.
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