TALANTA
·
2016
·
IF 4.035
Qiang Chen,Junfeng Zuo,Xue He,Xiujuan Mo,Ping Tong,Lan Zhang
In this paper, a simple, rapid and sensitive fluorescence method based on the formation of terbium (Tb 3+ ) complex has been developed for the rapid detection of Tb 3+ in water. The fluorescence sensor has been studied by using terbium complexed with thiabendazole (TBZ) while acetonitrile (MeCN) as solvent. The complex was made up of TBZ as small-molecule ligand and Tb 3+ as central ion. Fluorescence spectroscopy and UV spectroscopy together were used to study the behavior of the complexation of TBZ-Tb in this medium. Enhancement fluorescence was observed due to the efficient energy transfer process from TBZ to Tb 3+ . And the affecting factors of the enhancement fluorescence were also studied in detail. Under optimal conditions, a linear relationship was obtained between the enhanced fluorescence intensity and the concentration of Tb 3+ in a range of 5.0×10 −6 M–3.0×10 −5 M. The sensor was used for the detection of Tb 3+ in river water samples, and the result was satisfactory. In the meantime, a linear relationship was also obtained between the enhanced fluorescence intensity and the concentration of TBZ in a range of 8.0×10 −6 M–4.0×10 −5 M. Moreover, the method was successfully extended for the detection of TBZ in juice samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 22
·5330
·
IF 4.2
Shuzhen Yang,Fulin Lü,Li Wang,Sinan Liu,Zhisai Wu,Yanqin Cheng,Fan Liu
A smart and environmentally friendly pesticide system was developed that could respond to environmental stimuli while mitigating environmental risks. In this study, thiabendazole (Thi), an effective fungicide, was loaded onto zeolitic imidazolate framework-8 (ZIF-8) using the impregnation method to fabricate a pH-responsive nano hybrid delivery system (Thi@ZIF-8). The results demonstrated that Thi@ZIF-8 had a rhombic dodecahedral morphology and a loading capacity of approximately 25%. Notably, the amount of Thi released from Thi@ZIF-8 at a pH of 5.0 reached 79.54%, which was higher than that at pH 7.0 and 9.0, for 251 h. Such pH-responsive release characteristics of Thi@ZIF-8 were probably related to the pH-dependent structure stability of ZIF-8. The release mechanism of Thi@ZIF-8 conformed to non-Fickian diffusion. Additionally, Thi@ZIF-8 showed a higher control efficacy againstB. cinereacompared with Thi alone. Importantly, the ZIF-8 carrier could effectively reduce the leaching loss of Thi in soil and showed no negative effects on the three varieties of tomato seedlings, implying good biocompatibility. This work provides a novel and eco-friendly approach to control B. cinerea effectively that has great potential in modern sustainable agriculture.
研究领域:
农业科学
·
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yan Fan,Bo Hou,Fang Lu,Dao Liu,Xiang Cui
A novel “turn-on” fluorescent sensor of CeO 2 @MIL-88B was constructed successfully via the facile in-situ strategy. The as-obtained CeO 2 @MIL-88B could be used for effectively detecting the analyte of thiabendazole (TBZ) by luminescence enhancement, which limit of detection (LOD) was as low as 0.294 μM (nearly 10.4 times smaller than that of MIL-88B). The detection behavior for TBZ exhibited the excellent selectivity and anti-interference ability. Systematic explorations were performed to shed light on the underlying mechanism of “turn-on” effect on fluorescence after adding TBZ. Moreover, the CeO 2 @MIL-88B was also employed for the determination of TBZ in the real samples of orange and cucumber.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMBIOCHEM
·
2024
·
IF 2.6
Wen Fu,Zhongli Shao,Zhiping Xu,Zhong Li,Xusheng Shao
Graphical NP-TBZ is developed by covalently linking o -nitrobenzyl ( NP ) with thiabendazole ( TBZ ). Compound NP-TBZ can be controlled to release TBZ in dependent to light, which resulted in controllable in-vivo activity against wheat scab. It is promising for spatiotemporal controlled-release of TBZ in factual applications, posing a theoretical guidance in development of controlled-release pesticides. Pesticides are essential in agricultural development. Controlled-release pesticides have attracted great attentions. Base on a principle of spatiotemporal selectivity, we extended the photoremovable protective group (PRPG) into agrochemical agents to achieve controllable release of active ingredients. Herein, we obtained NP-TBZ by covalently linking o -nitrobenzyl ( NP ) with thiabendazole ( TBZ ). Compound NP-TBZ can be controlled to release TBZ in dependent to light. The irradiated and unirradiated NP-TBZ showed significant differences on fungicidal activities both in vitro and in vivo. In addition, the irradiated NP-TBZ displayed similar antifungal activities to the directly-used TBZ , indicating a factual applicability in controllable release of TBZ . Furthermore, we explored the action mode and microcosmic variations by SEM analysis, and demonstrated that the irradiated NP-TBZ retained a same action mode with TBZ against mycelia growth.
研究领域:
农业科学
·
植物保护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chemosensors
·
2025
·Vol. 13
·期 3
·107
·
IF 3.7
Haiyan Chang,Hailong Wu,Tong Wang,Xiaozhi Wang,Ruqin Yu
In this study, an excitation–emission–pH multi-way fluorescence technique coupled with a third-order calibration method based on an alternating quadrilinear decomposition (AQLD) algorithm was proposed for the simultaneous determination of thiabendazole (TBZ) and carbaryl (CAR) in apples. AQLD can be considered a “mathematical separation” technique that extracts the pure signal of the target analyte from complex mixed signals, thereby effectively addressing fluorescence peak overlap and unknown interference. The average spiked recoveries of the target analytes ranged from 98.4% to 101.9%, and the relative standard deviation was less than 5.6%. To evaluate the performance of the method, a number of parameters were calculated, including sensitivity (SEN), selectivity (SEL), limit of detection (LOD), limit of quantification (LOQ), and intra-day and inter-day precision. The results of the third-order calibration method were compared with those of the second-order calibration method (based on excitation–emission matrix fluorescence). These results showed that the former was superior. In short, the proposed strategy is simple, cost-effective, and anti-interference, providing a valuable reference for accurate quantification of TBZ and CAR in complex food matrices with uncalibrated interferences.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Wei Zhong,Jin Zou,Qi Yu,Yansha Gao,Fengli Qu,Shuwu Liu,Hui Zhou,Limin Lu
The development of effective electrochemical methods for the determination of pesticide residues is highly desirable for food safety requirements. Herein, a novel electrochemical sensing strategy for indirect detection of thiabendazole (TBZ) was achieved by monitoring the anodic stripping peak signal change of media Cu 2+ induced by a significant activity difference between active Cu 2+ and inactive Cu 2+ -TBZ complexes. In this sensing system, a heterostructured Ti 3 C 2 T x -TiO 2 composite synthesized via a simple in-situ-oxidization strategy is used as the electrode material to boost the anodic stripping peak signal. After optimizing various conditions, the developed sensor presents satisfactory analytical performance for TBZ assay with a linear range from 0.3 to 100.0 nM and a limit of detection as low as 0.1 nM (S/N = 3). Furthermore, the proposed sensing platform also exhibits outstanding anti-interference, repeatability, and stability, which is effective for the determination of TBZ in fruit and water samples.
研究领域:
食品科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Hao Sun,Shuang Xiong,Baolong Shi,Yimin Zhou,Changwei Bi,Jitao Li,Lili Li,Bin Liu,Chaoqing Dai,Yueyue Wang,Chao Wang,Dalei Wang,Wei Liu
Given the health and environmental risks associated with pesticide misuse, achieving zero pesticide residues is pivotal in Agriculture 4.0. Traditional detection methods such as HPLC and GC-MS are both complex and time-consuming. In contrast, surface-enhanced Raman scattering (SERS) offers rapid detection and high sensitivity, aligning with the efficiency and accuracy requirements of Agriculture 4.0. In this study, we developed a high-performance flexible substrate using a simple chemical synthesis method. We used material adsorption, anisotropic charge attraction and electron migration to facilitate the growth of the substrate material, which promoted more 'hot spots' and electron transfer , and continued optimisation of the preparation process, which resulted in a significant increase in spectral intensity. The substrate demonstrated outstanding detection capability, with a detection limit of 10 −15 M for thiabendazole (TBZ). In practical fruit testing, TBZ residue concentrations on the surface of American cherries could be detected as low as 10 −8 mg/mL, well below China's prescribed limit of 5 mg/kg. Relative to previous work in the field of pesticide detection, our study has lower detection limits and concentrations, as well as lower cost and simpler preparation, which provide more options for the detection of very low concentrations of hazardous substances. At the same time, it was confirmed that SERS is consistent with the zero pesticide residue goal of Agriculture 4.0, demonstrating practical efficacy and accuracy within this framework.
研究领域:
分析化学
·
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
VIBRATIONAL SPECTROSCOPY
·
2023
·
IF 2.5
Yan Kang,Yunchi Hu,Tong Ha,Yunsheng Ma,Xinhai Yu
A sealed and sticky surface-enhanced Raman scattering (SERS) substrate was fabricated by screen-printed technology. The screen-printed ink was prepared by mixing poly(ethylene glycol) diacrylate (PEGDA), Ag nanoparticles (Ag-NPs) and photoinitiator . After printed on Supporting material , PEGDA can polymerize into film under UV light illumination. Ag-NPs were sealed and protected by this film. SERS signal of 10 −12 M rhodamine 6G has been recorded on this substrate. The homogeneity of this substrate was examined by mapping experiments, and the relative standard deviation of the signals from 48 points was within 10 %, indicating high uniformity of this substrate. Upon coupling with thin layer chromatography (TLC), this sticky SERS substrate can be in thorough contact with the separated targets on TLC plates and stick to them firmly by pressing a cover, which was effective for improving the detection sensitivity. This coupling technology exhibited good performance for determination of thiabendazole in complex matrix with a detection limit of 0.01 μg/mL.
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Xiong-Xin Peng,Guang-Ming Bao,Yu-Fei Zhong,Li Zhang,Kang-Bo Zeng,Jia-Xin He,Wei Xiao,Yi-Fan Xia,Qing Fan,Hou-Qun Yuan
Thiabendazole (TBZ), has been extensively employed as a pesticide and/or a fungicide in agriculture, while its residues would threaten to public health and safety. Simple, rapid and sensitive probes for detection of TBZ in real food samples is significantly desirable. In present work, a highly selective and sensitive luminescent sensor for monitoring TBZ in oranges has been constructed based on a Tb 3+ -functionalized Zr-MOF (Tb 3+ @ 1 ). Tb 3+ @ 1 exhibited many attractive sensing properties toward TBZ, including broad linear range (0–80 μM), high selectivity, low LOD (0.271 μM) and rapid response time (less than1 min). Moreover, the probe was employed to determine TBZ in real orange samples, in which good recoveries from 98.41 to 104.48% were obtained. It only takes 35 min for the whole process of detection TBZ in real orange samples combined with QuEChERS method. Therefore, this work provided a reliable and rapid method for monitoring the TBZ in real orange samples.
研究领域:
食品科学
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
Food Analytical Methods
·
2020
·Vol. 13
·期 3
·811-822
·
IF 2.667
Cheng Fuliang,Liao Xiaoning,Huang Zhiwen,Xu Liting,Zhou Ying,Zhang Xue
Thiabendazole (TBZ), a widely used agricultural antifungal, has been evidenced to pose serious threat to human health. However, highly sensitive detection of it in food samples is difficult owing to the complexity of food matrix. Herein, an electrochemical sensor, based on multiwall carbon nanotubes (MWCNTs) decorated two-dimensional layered molybdenum disulfide (MoS 2 ), was firstly developed for rapid detection of TBZ using square wave voltammetry method. It is demonstrated that the modification of MoS 2 with MWCNTs enhances the catalytic performance to TBZ oxidation. Under optimized conditions, the electrochemical sensor shows admirable linearity range, high selectivity and low detection limit. In pear, water spinach and tap water sample analyses, satisfactory recoveries from 92.83 to 101.92% with coefficients of variation less than 5% were obtained, showing high consistence with the HPLC results. This work puts forward a rapid and reliable method for the highly sensitive screening of the residues of TBZ in food resource.
研究领域:
分析化学
·
食品安全
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Xingxing Yu,Yan Sun,Jieyu Hu,Junjie Wang,Xiumei Zhuang,Shenghao Zhang,Haiting Ren,Hongxing Qiu,Yueshou Zhang,Yongjun Hu
Surface-enhanced Raman scattering (SERS) is a promising method for rapid and sensitive detection of pesticide residues. Herein, a three-dimensional MoS2/Au/Ag nanostructure was developed by employing composite systems containing semiconductors, noble metal nanoparticles, and internal standard. The MoS2 nanoflowers provide abundant anchors for the loading of plasmonic nanoparticles so as to generate intense electromagnetic “hot spots,” and the Au-MBN/Ag nanostructures can increase the accuracy of SERS detection with the calibration ability of the internal standard molecules (4-mercaptobenzonitrile, 4-MBN). Therefore, the MoS2/Au/Ag nanostructures integrate the advantages of high-enhancement SERS substrates and high-accuracy ratiometric Raman detection. Moreover, the nanostructures were fabricated via a facile procedure and showed high sensitivity, accuracy, and reproducibility in SERS detection. The nanostructures also showed good linear fitting between the ratios of Raman intensity and logarithmic concentrations of analytes in ratiometric SERS analysis. In addition, thiabendazole (TBZ) in apple juice was successfully detected by using the as-prepared SERS substrates with a limit of detection down to 0.1 ppm in practical applications. To conclude, the MoS2/Au/Ag nanostructures showed excellent SERS activity in ratiometric analysis and the substrate is expected to have great potential for the quantitative detection of low-concentration pesticide residues.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Nisar Hussain,Yuzhu Li,Cheng Qu,Ning Li,Honglin Liu
Simultaneous assessment of agrochemical residues in agricultural entities is crucial for ensuring food safety and protecting consumer health. A highly sensitive and stable thioglycolic acid (TGA) based surface modified coreshell nanorod (Au@Ag@TGANR) arrays were developed for simultaneous fungicide detection in peach samples. The developed Au@Ag@TGANRs exhibited superior surface enhance Raman scattering (SERS) performance, enabling the simultaneous examination of ziram (ZIR) and thiabendazole (TBZ) residues in peach samples with detection limits as low as 0.003 and 0.028 ppm and high R 2 values of 0.996 and 0.995, for ZIR and TBZ, respectively. Good recoveries of 86.2 to 108.6 % and 80.2 to 105.7 % were also achieved for peach samples, highlighting the effectiveness of the established protocol for accurate and reliable detection of pesticides in fruits. These results suggest that the proposed method could be a valuable addition to current food safety protocols, with potential application in investigating toxic residues in agricultural entities.
研究领域:
食品安全
·
分析化学
·
农业科学
✓ 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）