MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Qian Xiang,Wei Geng,Xiaoqi Guo,Yongjie Liu,Sunan Liu,Xiaojuan Jin,Yajuan Chang,Tongze Lin,Ling Zhu,Yunsu Ma
Glyphosate (Gly) is one of the most widely used herbicides globally. It is essential to conduct quantitative monitoring of Gly in the environment to avoid unnecessary exposure. In this study, we present the development of a novel ratiometric fluorescent probe based on blue carbon dots (bCDs) and red quantum dots (rQDs) for the sensitive and selective detection of Gly in agricultural products. The fluorescence of rQDs is rapidly quenched upon interaction with Gly by intramolecular charge transfer (ICT), serving as the detection signal, while the fluorescence of bCDs remains constant, acting as an internal reference. By measuring the ratio of the fluorescence intensities of bCDs and rQDs ( I 440 / I 640 ), quantitative detection of Gly was achieved. The probe demonstrated a detection limit (LOD) as low as 0.11 μM, with a strong linear response over a concentration range of 0.5 to 200 μM. The developed method was successfully applied to detect Gly residues in real agricultural products (potatoes, gingers and apples), yielding satisfactory recovery rates and demonstrating high resistance to interference from other compounds. This study provides a reliable, efficient, and practical tool for environmental monitoring and food safety assessments.
研究领域:
环境科学
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食品安全
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分析化学
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DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 9
·1-10
·
IF 5.3
Zhao Fan,Liu Yunxi,Lan Jingyue
A simple and efficient dual-signal electrochemical sensor was designed for glyphosate (GLYP) determination based on the one-step electro-synthesized Cu-Hemin MOFs/CNTs nanocrystals. Cu-Hemin MOFs/CNTs were directly modified on the electrode through electrodeposition, avoiding complicated synthesis and modification processes. The incorporation of CNTs greatly boosted the conductivity of Cu-Hemin MOFs and the sensitivity of the electrochemical sensor. Cu active sites in Cu-Hemin MOFs were converted to CuCl, allowing the specific detection of GLYP with the turn of CuCl into non-electroactive Cu-GLYP. Meanwhile, GLYP showed highly effective inhibition effect on the inherent peroxidase-like activity of Cu-Hemin MOFs, therefore generating the second electrochemical signal with Cu-Hemin MOFs-catalyzed o -phenylenediamine ( o -PD) + H 2 O 2 system. The Cu-Hemin MOFs/CNTs based sensor with two electrochemical signals showed good linearities of 1.0 × 10 −10 M − 3.0 × 10 −6 M and 1.0 × 10 −10 M − 5.0 × 10 −5 M, with detection limits of 5.17 × 10 −12 M and 6.81 × 10 −12 M for the CuCl signal based assay and nanozyme catalyzed o -PD + H 2 O 2 procedure, respectively. This simple and robust dual-signal sensor with excellent selectivity, accuracy, and stability allowed GLYP quantification in real samples, highlighting the potential application of this approach for food and environmental monitoring. Graphical Abstract
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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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2018
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IF 2.829
Xianying Jiang,Zhuozhi Ouyang,Zhengfang Zhang,Chen Yang,Xiaoqin Li,Zhi Dang,Pingxiao Wu
The widespread use of glyphosate and the resulting environmental residues pose a serious threat to both crops and human health. The aim of this study was to investigate the adsorption process and removal mechanism of glyphosate by modified biochar (BC). Nano-zero-valent iron (NZVI) was loaded on the palm BC through liquid-phase chemical reduction. The composite material ((BC-NZVI)) was characterized using scanning electron microscopy, transmission electron microscopy , Fourier transform infrared spectroscopy , and X-ray photoelectron spectroscopy, revealing that it had a high specific surface area, rich oxygen-containing functional groups and complex ligands. Adsorption experiments were conducted with modified BC to study the effects of contact time (0–3750 min), initial concentration (5–40 mg/L), pH (2.00–7.00) and coexisting pollutants (0–20 mg/L). The adsorption data could be fitted well with the pseudo second-order kinetic model and Langmuir isotherm, indicating that the adsorption of glyphosate on the BC supported NZVI was a chemical and surface process. The maximum adsorption capacity was 80 mg/g at pH = 4, twice that of the original BC. At low concentrations, there was no influence on the adsorption of coexisting pollutants, sulfamethazine , cadmium ions , or phosphate; however, it had antagonistic effect ( Rq < 1) when the initial concentration of H 2 PO 4 + was higher than 10 mg/L. The adsorption mechanisms involved pore-filling, hydrogen-bond, electrostatic interactions and complexation. Such strong absorbability, along with being easy to obtain and inexpensive, makes (BC-NZVI) potentially suitable for the treatment of agricultural wastewater and acidic farmland soils contaminated with organic pollutants .
研究领域:
环境科学
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农业科学
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产品关联
DOI
高影响因子
TALANTA
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2020
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IF 5.339
Jianping Guan,Jiao Yang,Yue Zhang,Xiaoxue Zhang,Huajuan Deng,Juan Xu,Jinyi Wang,Mao-Sen Yuan
The ongoing poisoning of agricultural products has pushed the security problem to become an important issue. Among them, exceeding the standard rate of pesticide residues is the main factor influencing the quality and security of agricultural products. Monitoring pesticide residues and developing simple, yet ultrasensitive detection systems for pesticide residues are urgently needed. In this study, we successfully developed a novel rhodamine derivative as fluorescent and colorimetric chemosensor R-G for the rapid, selective and ultrasensitive detection of glyphosate pesticide residue in aqueous solution. Through a Cu 2+ -indicator displacement strategy, glyphosate can displace an indicator ( R-G ) from a Cu 2+ -indicator complex due to its strong affinity to bind with Cu 2+ to give a turn-on fluorescence and distinct color change. Moreover, a test strip was also fabricated to achieve a facile detection of glyphosate pesticide. To demonstrate the possibility of practical applications, glyphosate was detected on the surface of cabbage and in a spiked soil sample. The detection limit of 4.1 nM and the response time of 2 min indicate that the method is enough sensitive and rapid to detect the glyphosate residue at or below levels that pose a health risk.
研究领域:
分析化学
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环境科学
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农业科学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2021
·
IF 7.963
Mingjing Ke,Yizhi Ye,Zhenyan Zhang,Michael Gillings,Qian Qu,Nuohan Xu,Lusheng Xu,Tao Lu,Jiade Wang,Haifeng Qian
Agricultural chemicals have the potential to become pollutants that adversely affect plant growth. Interactions between these compounds are likely, but potential synergies are under-researched. Multiwall carbon nanotubes are increasingly finding novel uses in agriculture, as delivery mechanisms and as slow-release fertilizers. There is potential for nanotubes to interact with other agricultural chemicals in unpredictable ways. To investigate this possibility, we examined interactions with glyphosate, a widely used herbicide that is also attracting increasing concern over its potential for non-target effects. Here we examined potential synergistic effects on hydroponically grown Arabidopsis thaliana . Single treatments did not affect plant growth significantly, or did only mildly. However, combined treatment significantly affected both plant root and shoot growth. High-level content of malondialdehyde and up-regulated of metabolic antioxidant molecules in plant indicated that combined group caused the strong oxidative damage, while the decreased of antioxidant enzyme activities indicated an imbalance between reactive oxygen species (ROS)and the antioxidant defense system due to the continuously generated ROS. Besides, several intermediate metabolites of unsaturated fatty acids synthesis pathways were up-regulated in combined treatment, which clarified that combined group changed membrane components. The increase of intermediate metabolites in combined group also reflected more energy consumption in the repairment of the disrupt of combined treatment. The synergistic effect observed was attributed to the accumulation of glyphosate resulting from permeability and transportability of the carbon nanotubes. Overall, the risk of nanotube-herbicide interaction suggests a caution use of nanotubes in agricultural applications.
研究领域:
环境科学
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植物生理学
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农业化学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2017
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IF 3.154
Mengmeng Tong,Wanjun Gao,Weiting Jiao,Jie Zhou,Yeyun Li,Lili He,Ruyan Hou
The uptake, translocation, metabolism, and distribution behavior of glyphosate in nontarget tea plant were investigated. The negative effects appeared to grown tea saplings when the nutrient solution contained glyphosate above 200 mg L–1. Glyphosate was highest in the roots of the tea plant, where it was also metabolized to aminomethyl phosphonic acid (AMPA). The glyphosate and AMPA in the roots were transported through the xylem or phloem to the stems and leaves. The amount of AMPA in the entire tea plant was less than 6.0% of the amount of glyphosate. The glyphosate level in fresh tea shoots was less than that in mature leaves at each day. These results indicated that free glyphosate in the soil can be continuously absorbed by, metabolized in, and transported from the roots of the tea tree into edible leaves, and therefore, free glyphosate residues in the soil should be controlled to produce teas free of glyphosate.
研究领域:
植物科学
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环境科学
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农业
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毒理学
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产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
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2016
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IF 2.435
Rui Huo,Xue-Ling Yang,You-Qin Liu,Yue-Hua Xu
Visible-light-driven bismuth vanadate (BiVO 4 ) photocatalysts were prepared by the co-precipitation method. The BiVO 4 samples were characterized using X-ray diffraction, UV–visible diffuse reflectance, electrochemical impedance spectroscopy (EIS), photocurrent, and as well as electron microscopy (SEM, TEM). The photocatalytic activity of the as-prepared BiVO 4 samples was tested through the photocatalytic oxidation of glyphosate under visible light irradiation. The dark yellow amorphous BiVO 4 powder was prepared by the HAc method after drying at 70 °C, but the bright yellow monoclinic BiVO 4 was obtained after keeping at room temperature in the air for several days. The dependence of the room temperature crystallization on moisture can explain the low crystallization temperature found in this work. The BiVO 4 sample calcined at 400 °C by the HAc method showed the highest photocatalytic activity for glyphosate degradation under visible light irradiation because of its high charge separation efficiency proven by EIS and photocurrent.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
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IF 5.383
Yu Cao,Luona Wang,Chengyin Wang,Xiaoya Hu,Yunling Liu,Guoxiu Wang
A photoelectrochemical (PEC) sensor based on hierarchically porous Cu-BTC/g-C 3 N 4 nanosheet (Cu-BTC/CN-NS, BTC = benzene-1,3,5-tricarboxylic acid) material was constructed for the first time. As a composite material, the hierarchically porous Cu-BTC can help to efficiently capture suitable pesticide molecules and accelerate signal transmission, while CN-NS possesses good optical performance. Under the irradiation of visible light, the Cu metal center can coordinate with the added glyphosate to form Cu-glyphosate complexes, leading to the increased steric hindrance of electron transfer and consequently resulted in an obvious decrease in photocurrent . Through this strategy, the constructed sensor can realize the detection of glyphosate from non-electroactive to electroactive. The results indicate that this photoelectrochemical sensor has a low detection limit of 1.3 × 10 −13 mol L −1 and a wide detection range (1.0 × 10 −12 –1.0 × 10 −8 mol L −1 and 1.0 × 10 −8 ∼ 1.0 × 10 −3 mol L −1 ). Furthermore, this Cu-BTC/CN-NS based sensor has the characteristics of short detection time and easy operation. It has great potential applications in photoelectrochemical analysis.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Jiaqi Yao,Yue Sun,Peixin Shi,Yan Liu
Glyphosate is the most widely used herbicide in the world, and a large amount of mother liquor with high salinity is generated during the production of glyphosate by glycine-dimethylphosphite process. In this study, an efficient and environmentally friendly bipolar membrane electrodialysis (BMED) technology was employed for the resource recovery especially phosphorous acid from glyphosate mother liquor. Simulated wastewater as feed solution was initially employed to investigate the migration of phosphite ions in BMED process. The influences of initial pH, salt concentration of feed solution, current density and flow velocity were investigated. The results revealed that phosphites ions could effectively migrate through the anion exchange membrane at pH ≥ 9, with optimal current density of 30 mA/cm 2 and flow velocity of 2.48 cm/s, respectively. It substantiated that the migration of phosphite ions during BMED process was mainly controlled by its degree of protonation, which was influenced by the solution pH. Consequently, a two-stage BMED operation was designed to separate phosphite ions from mixed NaCl and Na 2 HPO 3 solution. The separation efficiency S B A was −84.4 % at end of the first stage and changed to 42.9 % in the second stage. Finally, real glyphosate mother liquor was employed as the feed solution to verify the performance of the two-stage BMED process, and results revealed that the two-stage operation could effectively separate phosphite ions from mixed salt solution. Two-stage operation possessed higher current efficiency and lower energy consumption than those of one-stage operation. In addition, only 0.9 % glyphosate leaked from the feed solution to acid and base solution, thus the products recovered from glyphosate mother liquor could be further processed to recycle in the production of glyphosate. These findings indicated that the two-stage BMED operation had great potential to recover resource from glyphosate mother liquor.
研究领域:
环境科学
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化工技术
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Liwen Wang,Guang Wu,Tengfei Wang,Dating Tian
Organophosphorus pesticides (OPs) are commonly employed in agriculture because they effectively control pests and increase crop output. However, most OPs are highly toxic. As a result, precise detection of OPs residues is critical for monitoring human disease and protecting the environment. In this work, we developed an aggregation-induced emission (AIE) probe of Sm-GSH-CuNCs for sensitive and visual detection of OPs by combining Sm 3+ with glutathione-modified copper nanoclusters (GSH-CuNCs). Using glyphosate as the OPs model, the fluorescence of GSH-CuNCs was quenched due to the stronger affinity between Sm 3+ and glyphosate than that between Sm 3+ and GSH-CuNCs, as well as the formation of new P-O-Sm bonds between Sm 3+ and glyphosate , resulting in the "on-off" response of the AIE probe. The Sm-GSH-CuNCs probe detected glyphosate throughout a linear range of 0.338–5.070 mg/L, with a detection limit of 0.013 mg/L. Furthermore, we have constructed an Sm-GSH-CuNCs agar slice detection platform that used smartphone assistance to detect glyphosate visually and quantitatively. A good linear relationship between R/B values and OPs concentrations( C i ) was discovered: R/B =-0.316 C i +1.943 ( R 2 =0.9970). This work provided a simple, low-cost, and portable detection method for quantifying or visualizing OPs.
研究领域:
分析化学
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环境科学
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农业科学
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产品关联
DOI
高影响因子
Toxics
·
2026
·Vol. 14
·期 6
·506
·
IF 4.9
Junyue Zheng,Xiangguang Chen,Jiazhen Jiang,Fengchang Wu
Glyphosate (Gly) is currently the most commonly used broad-spectrum herbicide in the world. The extensive residues of Gly and its major metabolite aminomethylphosphonic acid (AMPA) in food and the environment make it inevitable for humans to consume them. Although Gly has been shown to disturb the homeostasis of gut microbiome by inhibiting the shikimic acid pathway of microorganisms, the potential health effects [such as the occurrence of antibiotic resistance genes (ARGs)] remain unclear. Furthermore, as antibiotics that also act on the intestinal microbiota, their extensive residues inevitably lead to co-exposure with Gly. For these reasons, this study used zebrafish as experimental organisms to explore the effects of Gly/AMPA and oxytetracycline (OTC) exposure alone or in combination on ARGs in the intestine. Our results indicate that Gly exposure, rather than AMPA exposure, led to a 1.67-fold increase in the relative abundance of ARGs in the zebrafish intestine. Combined exposure to Gly and OTC led to a 2.30-fold increase in the relative abundance of ARGs in the zebrafish intestine, indicating a synergistic effect, whereas the additive effect of AMPA and OTC was negligible. In conclusion, the health risk of antibiotic resistance caused by Gly through the gut microbiota is a neglected hot topic. Further studies are needed to clarify Gly-induced functional drug resistance and to assess the human relevance of these findings using more appropriate model organisms.
✓ 已验证
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2025
·
IF 10.5
Hui Li,Chuang Jiang,Wanqi Jiang,Yuqing Zhang,Xiyao Liang,Yingying Feng,Yingnan Liu
To overcome the limitations of conventional enzymatic glyphosate (Glyp) detection methods, including enzyme environmental sensitivity, high cost, and limited enzyme sources, this study developed a portable paper-based fluorescence platform (Y-R membrane) based on a metal-organic framework (MOF)-driven fluorescence regulation mechanism for non-enzymatic and rapid detection of Glyp. This platform was constructed by immobilizing MnMOF and yellow carbon dots (Y-CDs) on a polyvinylidene fluoride membrane. The ZrOx-OH derived from alkaline-treated UiO-66 regulated the Mn 3+ /Mn 2+ redox reactions through its surface hydroxyl groups, triggering the red fluorescence of MnMOF. Glyp detection was achieved via competitive binding of its carboxyl groups to ZrOx-OH hydroxyls, inhibiting the redox process and inducing concentration-dependent fluorescence quenching. Coupled with RGB analysis, this platform exhibited excellent linearity (R 2 = 0.993) within 0.1–100 μg/mL range, with a detection limit of 0.06 μg/mL. The standard addition experiments demonstrated Glyp detection recoveries of 96.0 %∼103.4 % in tea samples, completing detection within 15 min. This platform enabled rapid, accurate and visual screening of Glyp residues without needing enzymatic reactions or sophisticated instruments. With its advantages of operational simplicity, cost-effectiveness, and intuitive readout, this system offered a novel competitive reaction-based sensing strategy for on-site rapid screening of Glyp in agricultural products.
研究领域:
分析化学
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环境科学
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食品安全
·
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）