CARBOHYDRATE POLYMERS
·
2015
·
IF 4.074
Chan Bai,Sufen Zhang,Lei Huang,Haiyan Wang,Wei Wang,Qingfu Ye
Starch , with properties of eco-friendliness and abundance, is one of the most important natural polymers. Starch-based hydrogels were investigated as carriers of carbendazim to combine controlled-release and water absorption (WA). Three carbendazim-loaded hydrogels (CLHs) with different WA capacities were prepared by solution polymerization. The CLHs were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and liquid-chromatography mass-spectrometry (LC–MS/MS). Release kinetics of CLHs was investigated using 14 C-labeling method. The diffusion parameters of CLHs were 0.47, 0.57 and 0.81 in deionized H 2 O (ddH 2 O). WA affected release profile significantly, the release longevity reaching 240 h when WA was 800 g/g in ddH 2 O. Solution pH influenced release profiles and the lowest release rate occurred in the lowest pH. Addition of CLH (1.3 g/kg soil) markedly increased water-holding capacity (WHC) of soil by 8.2%. The study indicated that starch-based CLH was a good controlled-release agent for carbendazim and water absorbent for soil.
研究领域:
农业科学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2023
·Vol. 12
·期 12
·2277
·
IF 5.2
Li Wang,Mengyue Li,Bo Li,Min Wang,Hua Zhao,Fengnian Zhao
Carbendazim (CBZ) abuse can lead to pesticide residues, which may threaten the environment and human health. In this paper, a portable three-electrode sensor based on laser-induced graphene (LIG) was proposed for the electrochemical detection of CBZ. Compared with the traditional preparation method of graphene, LIG is prepared by exposing the polyimide film to a laser, which is easily produced and patterned. To enhance the sensitivity, platinum nanoparticles (PtNPs) were electrodeposited on the surface of LIG. Under optimal conditions, our prepared sensor (LIG/Pt) has a good linear relationship with CBZ concentration in the range of 1–40 μM, with a low detection limit of 0.67 μM. Further, the sensor shows good recovery rates for the detection of CBZ in wastewater, which provides a fast and reliable method for real-time analysis of CBZ residues in water samples.Keywords:carbendazim;laser-induced graphene;platinum nanoparticles;electrochemical detection;water sample
研究领域:
环境科学
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Yong Han,Hui Wang,Ying Yu,Weixia Yang,Fei Shang,Zhonghong Li
Nano-hybrid carbon dots (CDs) with multiple emissions always endure fluorescence quenching induced by the interactions of chemical groups between hybrid CDs and nanomaterial, the samples with abundant interferences by an ordinary pretreatment. Lanthanide ion (DPA-Tb) was employed to hybridize PAN-CDs for the fabrication of ratiometric fluorescent sensor (PAN-CDs&DPA-Tb) to detect Carbendazim (MBC) in complicated food samples with facile pretreatment. The impacts of hybridization on the fluorescence of PAN-CDs were evaluated through dynamic characterizations, which manifested that DPA-Tb and the sensing matrix had no significant influence on the ratiomeric fluorescence of PAN-CDs&DPA-Tb sensor. The sensor (F 363 /F 544 ) linearly responded to concentrations of MBC in 0–0.091 mmol/L with a limit of detection (LOD) of 3.0 × 10 -3 μmol/L and satisfactory applications with recoveries of 92.22–106.08% and RSDs of 0.14–1.69%. The strategy provides a novel sight to investigate the fabrication of CDs-based ratiometric fluorescent sensors.
研究领域:
分析化学
·
食品安全
·
纳米技术
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2019
·
IF 5.399
Xi Chen,Mengshi Lin,Lin Sun,Taotao Xu,Keqiang Lai,Meizhen Huang,Hetong Lin
The contamination of pesticide residues in Oolong tea has raised much concern in recent years. The objective of this study was to synthesize gold nanoparticles (AuNPs) and develop surface-enhanced Raman spectroscopy (SERS) methods for detection and quantification of pesticides in Oolong tea. Facile synthesis of spherical and monodispersed AuNPs with an average diameter of 15 nm was achieved, which induced strong electromagnetic fields in SERS analysis. AuNP substrates were employed for rapid detection and quantification of carbendazim in Tieguanyin Oolong tea. Partial least squares (PLS) analysis and leave-one-out cross validation were utilized in spectral data analysis. The PLS results for Oolong tea samples were obtained: R value = 0.964; the detection limit = 100 μg/kg. These results demonstrate that SERS coupled with gold nanoparticle substrate is a simple, rapid, and sensitive analytical tool for measurement and quantification of carbendazim residues in Oolong tea.
研究领域:
分析化学
·
食品安全
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Yunhang Liu,Tingting Wu,Hongyuan Zhao,Gan Zhu,Fang Li,Meimei Guo,Qiwen Ran,Sridhar Komarneni
A sensitive carbendazim (CBZ) electrochemical sensor was designed by using Super-P carbon (SPCN) black@zeolitic-imidazolate-framework-8 (SPCN@ZIF-8) nanocomposite modified glassy carbon electrode (SPCN@ZIF-8/GCE). SPCN with pearl-chain nanostructure presented an integrated highly conductive carbon network, which significantly improved the charge transfer efficiency. ZIF-8 nanoparticles possessed high porosity and large specific surface area, which helped to realize the increasement of adsorption ability and accumulation capacity towards CBZ. Moreover, SPCN with excellent conductivity property not only inhibited the agglomeration of ZIF-8 nanoparticles but also compensated the non-conductive property of ZIF-8 nanoparticles. The functional integration of SPCN and ZIF-8 nanoparticles remarkably enhanced the electrochemical detection performance of the SPCN@ZIF-8/GCE sensor towards CBZ. A simple and sensitive CBZ detection could be achieved at the fabricated SPCN@ZIF-8/GCE sensor with low limit of detection of 7.79 nM (CBZ concentration: 0.01–30 μM). Moreover, the fabricated sensor showed good repeatability, reproducibility, and anti-interference performance. When used for the analysis of CBZ in real samples (tomato juice and apple juice), the SPCN@ZIF-8/GCE sensor showed good CBZ detection performance with acceptable recoveries of 99.1%–102.6% and low RSD values of 2.21%–3.27%. This work demonstrated that the SPCN@ZIF-8/GCE sensor may be a promising sensing platform for the rapid and sensitive detection of CBZ residue.
研究领域:
分析化学
·
环境科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2016
·Vol. 183
·期 4
·1433-1439
·
IF 4.831
Li Shuhuai,Wu Xuejin,Zhang Qun,Li Pingping
The authors describe a nanomaterial for solid-phase extraction of carbendazim. Magnetic molecularly imprinted polymer nanoparticles (mag-MIP-NPs) were obtained by immobilizing the MIP and a thiolated β-cyclodextrin on the surface of magnetite (Fe 3 O 4 ) nanoparticles coated with gold nanoparticles. Both the recognition sites of the MIP and the hydrophobic cavities in the β-cyclodextrin contribute to the specific molecular recognition and extraction of carbendazim. The mag-MIP-NPs have an apparent adsorption capacity of 190 mg⋅g‾ 1 . Spiked vegetables were analyzed by using this material for extraction of carbendazim prior to its determination by ultra performance liquid chromatography (UHPLC). Recoveries range from 90.5 % to 109 %, and the detection limit is 3.0 pg⋅mL‾ 1 .
Magnetic molecularly imprinted polymer nanoparticles (mag-MIP-NPs) were synthesized based on a thiolated β-cyclodextrin on the magnetic nanocomposite. Due to the synergetic dual recognition and separation effect, mag-MIP-NPs showed the good adsorption capacity of 190 mg⋅g‾ 1 for carbendazim.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Yuxin He,Hecun Zou,Xinhui Jiang,Yanrui Wei,Siqiao Li,Tong Wu,Zhengwei Zhang
Foodborne residue of carbendazim (CBZ) poses a major threat to human health. Here, we rationally designed a smartphone-assisted fluorescent sensor based on bimetallic-organic framework (Eu/Tb-MOF) for ultrasensitive and visual monitoring of CBZ. The Eu/Tb-MOF nanorods fabricated using Eu 3+ /Tb 3+ as metal nodes and homobenzoic tricarboxylic acid (H 3 BTC) as organic ligand exhibit superior optical properties. After adding CBZ, the strong orange fluorescence of Eu/Tb-MOF nanorods was suppressed by the inner filter effect (IFE). The linear ranges of the fluorescent sensor were 0.01–15 and 15–80 µg/mL, with a detection limit as low as 7.09 ng/mL. The analyses of CBZ residue in tomato and orange samples showed satisfactory recoveries of 99.32 %–101.97 % and low relative standard deviations of 0.87 %–3.44 %., verifying the practicality of the probe for CBZ. Notably, a simple and portable smartphone-assisted sensing platform based on the Eu/Tb-MOF nanorods was successfully constructed for quick, visual, and real-time monitoring of CBZ residue. This work provides an efficient onsite analytical method for assessment and warning-early of CBZ to safeguard food quality
研究领域:
食品安全
·
分析化学
·
光学传感
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2022
·
IF 4.52
Yue Tang,Hongyan Yu,Xiaojuan Niu,Qiaodie Wang,Yuanyuan Liu,Yuangen Wu
Pesticide residues like carbendazim have always been a great threat to agricultural production and food safety. Herein, a fluorescent aptasensor for carbendazim detection was established based on aptamer-mediated quenching of gold nanoparticles (AuNPs) toward carbon dots (CDs). CZ-13 aptamer can wrap AuNPs and make them dispersed in salt solution, thus quench the fluorescence of CDs. On adding carbendazim, the aptamer is firstly consumed to preferentially combine with pesticides, resulting in the fluorescence recovery of CDs from quenching status. The degree of fluorescence recovery is positively correlated with pesticide concentration, which enables us to establish a fluorescence aptasensor for carbendazim detection. Under optimal conditions, the limit of detection of the fluorescent aptasensor is determined as low as 2.3 μg·L −1 . Moreover, the average recovery range of carbendazim in several vegetables and fruits is from 86 % to 99 %, indicating that such aptasensor may have bright application prospects for carbendazim detection in foods .
研究领域:
食品安全
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 3
·1-13
·
IF 5.3
Yang Dong,Li Xuhua,Li Xiangyu,Chen Jifan,Zhang Ting,Lian Ting,Wang Haihua
Carbendazim (CBD) is widely used as a fungicide that acts as a pesticide in farming to prevent crop diseases. However, CBD can remain on crops for a long time. When consumed by humans and animals, it produces a range of toxic symptoms and poses a serious threat to their health. Therefore, the detection of CBD is necessary. Traditional assay strategies for CBD detection, although sensitive and practical, can hardly achieve fast, robust monitoring during food processing and daily life. Here, we designed a novel electrochemical sensor for CBD detection. In this method, iron oxyhydroxide nanomaterial (β-FeOOH) was first prepared by hydrothermal method. Then, a molecularly imprinted polymer (MIP) layer was electropolymerized on the surface using CBD as the template and resorcinol (RC) as the functional monomer. The synergistic interaction between β-FeOOH and MIP endows the MIP/β-FeOOH/CC-based electrochemical sensor with high specificity and sensitivity. Under optimal conditions, the MIP/β-FeOOH/CC-based sensor showed a wide linear range of 39 pM–80 nM for CBD and a detection limit as low as 25 pM. Therefore, the as-prepared sensor can be a practical and effective tool for pesticide residue detection. Graphical abstract
研究领域:
分析化学
·
食品科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Xiaoyu Zhu,Peng Liu,Yu Ge,Ruimei Wu,Ting Xue,Yingying Sheng,Shirong Ai,Kaijie Tang,Yangping Wen
Electrochemical nanozyme sensor coupled with machine learning (ML) for intelligent analysis of carbendazim (CBZ) residues in tea and rice samples using graphene-like molybdenum disulfide (MoS 2 )/multi-walled carbon nanotubes (MWCNTs) porous nanohybrid network with oxidase-like characteristic was developed. MoS 2 /MWCNTs porous nanohybrid network was prepared by ultrasonic dispersion of MWCNTs into MoS 2 aqueous dispersion that was obtained by ultrasonic-assisted dispersion in sodium carboxymethyl cellulose water solution, which displayed low electron transfer resistance, high effective surface area, excellent film electrode stability. Machine learning via the artificial neural network for the intelligent analysis of CBZ was discussed in comparison with traditional regression analysis. Good electrocatalytic capacity, unique oxidase-like characteristic, wide linear range with 0.04–100 μM, low limit of detection with 7.4 nM, high sensitivity, and satisfactory practicability for CBZ demonstrated that electrochemical nanozyme sensor for the intelligent analysis of CBZ residues in edible agro-products was feasible. This will provide a new electrochemical sensing platform for the development of a graphene-like nanozyme sensor and its intelligent analysis of CBZ in food and agro-product safety.
研究领域:
食品科学
·
环境分析化学
·
纳米生物技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2019
·
IF 4.959
Jianhua Lv,Bin Sun,Jing Jin,Wei Jiang
Diatomite as a promising natural material is filled into poly(acrylamide) (PAAm) to synthesize PAAm/diatomite composite hydrogel. The internal chemistry structure of PAAm/diatomite composite hydrogel and the diatomite dispersion are characterized via Attenuated total reflection Fourier transform infrared (ATR-FTIR) and scanning electron microscopy (SEM). The mechanical property, water absorbency, and transparency of PAAm/diatomite composite hydrogels filled with different contents of diatomite are systematically investigated. The tensile and compressive strengths of PAAm/diatomite composite hydrogels are improved twice and 13-fold with 8 phr of diatomite. The water absorbency and transparency of PAAm/diatomite composite hydrogel decrease with the increase of diatomite content. The diatomite in PAAm hydrogels is not merely filling the bulk of PAAm hydrogel but is connecting with PAAm via hydrogen bonding. Carbendazim as a broad-spectrum benzimidazole fungicide is used to investigate the release property and kinetics of the composite hydrogels. The PAAm hydrogels can decrease the release rate of carbendazim and prolong the carbendazim efficacy, especially for the diatomite composite hydrogel. The time of half carbendazim release from the diatomite composite hydrogel is prolonged for almost 4 days, and the release mechanism is anomalous transport. Thus, diatomite can improve the mechanical property of PAAm hydrogel and extend the carbendazim efficacy loaded with PAAm hydrogel. Considering more widely applicable, the diatomite composite hydrogel can be applied to reduce the loss and waste of drugs and prolong the duration of drugs in biomedical materials.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LAND DEGRADATION & DEVELOPMENT
·
2025
·
IF 3.7
Sen Niu,Minghui Li,Yan Jiang,Yujun Wang,Qibiao Ren
Carbendazim, a commonly used fungicide, was identified as a contributor to soil degradation. Despite the extensive use of carbendazim, the degradation mechanisms and the removal process of carbendazim in the soil environment were not yet fully understood. A deeper understanding of the degradation pathways of carbendazim was considered essential for developing effective strategies to mitigate long-term environmental impacts. The degradation of carbendazim using ozone in water and soil environments was investigated with the simulation experiments of ozone exposure in water and soil, and the degradation pathways and removal efficiency of carbendazim in water were also explored under different conditions in the study. The results showed that ozone-induced degradation proceeded in three stages: rapid removal, slow removal, and equilibrium. In water, ozone directly reacted with carbendazim, generating hydroxyl radicals (˙OH), which oxidized carbendazim into intermediates, including 2-aminobenzimidazole, 2-hydroxybenzimidazole, 2-benzimidazolone, and o-phenylenediamine. The intermediates eventually degraded into nontoxic byproducts such as carbon dioxide and water. In soil, ozone treatment enhanced the removal of carbendazim by catalyzing the production of active substances, including hydroxyl radicals (˙OH) and hydrogen peroxide (H 2 O 2 ). Increasing the aeration frequency to four times daily significantly improved the efficiency of carbendazim removal, reaching the peak removal rate of 70.4% after 21 days of ozone exposure in the soil. The findings of this study clarified the theoretical mechanisms of ozone treatment for carbendazim remediation, highlighted the critical role of hydroxyl radicals (˙OH) in the degradation process, and established a scientific foundation for developing remediation strategies targeting carbendazim-induced soil contamination.
研究领域:
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）