Preparation of molecularly imprinted polymer with class-specific recognition for determination of 29 sulfonylurea herbicides in agro-products

Feng, Gege; Sun, Jianchun; Wang, Miao; Wang, Mengqiang; Li, Zhuang; Wang, Shanshan; Zheng, Lirong; Wang, Jing; She, Yongxin; El‐Aty, A.M. Abd

doi:10.1016/j.chroma.2021.462143

Cited by 22 publications

(7 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The proposed method is compared with other methods based on different adsorption materials reported for analyzing SUHs. As can be seen from Table 2, the LODs of this method are lower than those reported methods [7,19,27,[37][38][39][40], but higher than those reported methods [4,8,28,41]. However, the total adsorption and desorption time of this method is 10 min, which is much faster than those reported methods [4,5,7,27,37,40].…”

Section: Analytical Performancementioning

confidence: 61%

Amino functionalized magnetic covalent organic framework for magnetic solid‐phase extraction of sulfonylurea herbicides in environmental samples from tobacco land

Tian

et al. 2022

J of Separation Science

View full text Add to dashboard Cite

An amino-functionalized magnetic covalent organic framework composite TpBD-(NH 2 ) 2 @Fe 3 O 4 (Tp=Tp1,3,5-triformylphloroglucinol, BD-(NH 2 ) 2 is 3,3',4,4'-biphenyltetramine) was prepared by post-synthesis modification. Due to its abundant benzene rings and amino groups, large specific surface area and porous structure, the prepared TpBD-(NH 2 ) 2 @Fe 3 O 4 exhibits high extraction efficiency toward sulfonylurea herbicides. Based on this, a new method of magnetic solid-phase extraction with TpBD-(NH 2 ) 2 @Fe 3 O 4 as the sorbent combined with high-performance liquid chromatography and ultraviolet detection was developed for trace analysis of sulfonylurea herbicides in environmental water, soil and tobacco leaves samples from tobacco land. Under the optimized conditions, the limits of detection within 0.05-0.14 μg/L were achieved with a high enrichment factor of 217-260-fold, and the relative standard deviations were 4.9-7.5% (n = 7, c = 0.5 μg/L). The linear range was around three orders of magnitude with the square of correlation coefficient higher than 0.9936. The method was applied to analyze five sulfonylurea herbicides in the environmental water, soil, and tobacco leave samples collected from tobacco land. No sulfonylurea herbicides were detected in these samples. The recoveries of target sulfonylurea herbicides in spiked environmental water, soil, and tobacco leaf samples were found in the range of 90.7-104, 70.7-99.0, and 59.3-97.8%, respectively. The results illustrate that the established TpBD-(NH 2 ) 2 @Fe 3 O 4 -magnetic solid-phase extractionhigh-performance liquid chromatography-ultraviolet detection method is efficient for the analysis of trace sulfonylurea herbicides in environmental samples.

show abstract

Section: Analytical Performancementioning

confidence: 61%

Amino functionalized magnetic covalent organic framework for magnetic solid‐phase extraction of sulfonylurea herbicides in environmental samples from tobacco land

Tian

et al. 2022

J of Separation Science

View full text Add to dashboard Cite

show abstract

“…This means the quantity of the target analytes adsorbed per unit mass of MIPs. To ensure equilibration, MIPs are exposed to the appropriate analyte in suitable solvents for a sufficiently long time [ 48 , 49 ]. The capacity is calculated as follows [ 48 ]:

where C 0 (mg/mL) and C e (mg/mL) are the initial and equilibrium concentrations of the target analyte in the sample, respectively, V (mL) is the target analyte sample volume, and m (g) is the mass of MIPs or NIPs.…”

Section: Molecular Imprinting Technologymentioning

confidence: 99%

“…The Scatchard model, also known as the independent site-oriented adsorption model, helps to evaluate the binding properties and dependency of MIPs toward the analyte, and it can be estimated as follows:

where Q e (mg/g) is the adsorption capacity of the polymers at equilibrium, Q max is the maximum apparent adsorption capacity (mg/g), C e (mg/mL) is the equilibrium concentration of the target in solution, and K d is the equilibrium dissociation constant [ 48 ].…”

Section: Molecular Imprinting Technologymentioning

confidence: 99%

Application of Molecularly Imprinted Electrochemical Biomimetic Sensors for Detecting Small Molecule Food Contaminants

et al. 2022

Self Cite

View full text Add to dashboard Cite

Environmental chemical contaminants in food seriously impact human health and food safety. Successful detection methods can effectively monitor the potential risk of emerging chemical contaminants. Among them, molecularly imprinted polymers (MIPs) based on electrochemical biomimetic sensors overcome many drawbacks of conventional detection methods and offer opportunities to detect contaminants with simple equipment in an efficient, sensitive, and low-cost manner. We searched eligible papers through the Web of Science (2000–2022) and PubMed databases. Then, we introduced the sensing mechanism of MIPs, outlined the sample preparation methods, and summarized the MIP characterization and performance. The classification of electrochemistry, as well as its advantages and disadvantages, are also discussed. Furthermore, the representative application of MIP-based electrochemical biomimetic sensors for detecting small molecular chemical contaminants, such as antibiotics, pesticides, toxins, food additives, illegal additions, organic pollutants, and heavy metal ions in food, is demonstrated. Finally, the conclusions and future perspectives are summarized and discussed.

show abstract

“…In recent years, precipitation polymerization has received increasing attention for the preparation of monodisperse functional polymer particles, which have attractive prospects in numerous application fields, such as calibration standards, chromatography fillers, catalyst supports, controlled drug release, biomedical diagnosis, and stimuli-responsive materials . Different from emulsion, suspension, and dispersion polymerization using various surfactants as stabilizing agents (steric hindrance or electrostatic repulsion), the precipitation polymerization system only consists of monomers, radical initiators, and solvent without any dispersants or emulsifiers.…”

Section: Introductionmentioning

confidence: 99%

Facile and High-Yield Synthesis of Monodisperse and Heat-Resistant Polymaleimide Microspheres by Self-Stabilized Precipitation Polymerization

Yang,

Shu,

Wang

et al. 2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

In recent years, monodisperse functional polymer particles have attracted intensive attention due to their promising prospects in numerous application fields. Herein, monodisperse polymaleimide (PMI) microspheres with excellent thermal stability and a high glass transition temperature were facilely prepared by self-stabilized precipitation polymerization (2SP) of maleimide. The effects of the reaction medium, monomer and initiator concentrations, reaction temperature, and cross-linker dosage on the size and morphology of the as-prepared PMI microspheres were systematically investigated. By simply adjusting the monomer and initiator concentration and reaction temperature, monodisperse spherical PMI microspheres were successfully obtained in high yield (close to 100%) in ethyl acetate with tunable diameters of 0.24−1.08 μm. To elucidate the nucleation, stabilization, and growth mechanism, the size, surface morphology, and molecular weight of the as-prepared PMI microspheres were monitored over the polymerization process. As expected, the particle growth was mainly attributed to the continuous deposition of newly formed PMI chains onto the surface of the PMI nuclei, which is in good agreement with the traditional 2SP process. Furthermore, the intermolecular hydrogen-bonding interactions between imide and carbonyl groups might also exert an important influence on the stabilization and growth of the PMI particles, which were verified by the 2SP polymerization of MI in the presence of urea and succinimide.

show abstract

Preparation of molecularly imprinted polymer with class-specific recognition for determination of 29 sulfonylurea herbicides in agro-products

Cited by 22 publications

References 37 publications

Amino functionalized magnetic covalent organic framework for magnetic solid‐phase extraction of sulfonylurea herbicides in environmental samples from tobacco land

Amino functionalized magnetic covalent organic framework for magnetic solid‐phase extraction of sulfonylurea herbicides in environmental samples from tobacco land

Application of Molecularly Imprinted Electrochemical Biomimetic Sensors for Detecting Small Molecule Food Contaminants

Facile and High-Yield Synthesis of Monodisperse and Heat-Resistant Polymaleimide Microspheres by Self-Stabilized Precipitation Polymerization

Contact Info

Product

Resources

About