NH2-MIL-53(Al) Polymer Monolithic Column for In-Tube Solid-Phase Microextraction Combined with UHPLC-MS/MS for Detection of Trace Sulfonamides in Food Samples

Porous frameworks are a term of attracting solid materials assembled by interconnection of molecules and ions. These trendy materials due to high chemical and thermal stability, well-defined pore size and structure, and high effective surface area gained attention to employ as extraction phase in sample pretreatment methods before analytical analysis. Solid-phase microextraction is an important subclass of sample preparation technique that up to now different configurations of this method have been introduced to get adaptable with different environments and analytical instruments. In this review, theoretical aspect and different modes of solid-phase microextraction method are investigated. Different classes of porous frameworks and their applications as extraction phase in the proposed microextraction method are evaluated. Types and features of supporting substrates and coating procedures of porous frameworks on them are reviewed. At the end, the prospective and the challenges ahead in this field are discussed.

Section: Procedures Of Coating Porous Framework On Different Supportsmentioning

confidence: 99%

Section: Procedures Of Coating Porous Framework On Different Supportsmentioning

confidence: 99%

Applications of porous frameworks in solid‐phase microextraction

Khataei

Yamini

Shamsayei

2021

“…These advantages also make MOFs popular in sample preparation of aquatic products to improve the efficiency of the extraction and enrichment and achieve better recover-ies [29,71,72]. Currently, MOFs have been used in sample preparation for selective separation and analysis of different compounds from aquatic products such as neurotoxin [73], heavy metals [74], antibiotics drugs [75][76][77][78], polycyclic aromatic hydrocarbons (PAHs) [79]. The size-selective adsorption process of guest molecules on MOF is mainly performed in the cavities, and the specific adsorption is attributed to the interaction between active sites and analytes including π-π interactions, Hbonding, and hydrophobic-hydrophilic interactions, etc [70][71][72].…”

Section: Metal-organic Frameworkmentioning

confidence: 99%

“…Zirconium-based MOF with high surface area and tunable pore sizes can be used as sorbent materials to extract enrich ions, due to its high affinity to mercurial compounds with low LOD, good reproductivity, and recovery. Moreover, MOF also can be postsynthetically modified by exposing unsaturated sites for selective absorption [73][74][75][76]. Wang et al [73] prepared postsynthetical magnetic zeolite imidazolate framework-8 (Fe 3 O 4 SPs@ZIF-8/Zn 2+ ) particles for the selective extraction of domoic acid from seafood ( Figure 3) via the strong electrostatic interactions and the coordination reactions between Zn 2+ and domoic acid.…”

Section: Metal-organic Frameworkmentioning

confidence: 99%

“…In general, quantitative analytical methods for sample analysis, including GC/MS and LC/MS, and rapid and qualitative analytical methods, are SERS and fluorescence method. Up to now, antibiotics (SAs [49,75,86,89], quinolones [77,99,105], MG [31][32][33]60,97,118], and nitrofurans), anesthetics, preservatives, and environmental pollutants (heavy metallic ions [35,95,[107][108][109][110][111][112] and organic pollutants [46,75]), etc., have been successfully analyzed by applying advanced materials to sample preparation techniques. Application of advanced materials for food safety analysis of aquatic product can be seen in Table 1.…”

Section: Application Of Advanced Materials For Food Safety Analysis Omentioning

confidence: 99%

See 1 more Smart Citation

Advanced materials on sample preparation for safety analysis of aquatic products

Lai

Zhang

2020

Safety analysis of aquatic products has been a challenge in recent years due to the serious matrix interference, complex characteristics, and ultra-low content of analytes. Introducing advanced materials to sample preparation technique can greatly improve the extraction, enrichment, and separation for further qualification and quantification of target analytes by coupling with consequent analytical technologies. Based on this scope, this review is mainly introducing advanced materials on the sample preparation for safety analysis of aquatic products in the past decade. After introducing the importance of the corresponding advanced materials, advanced materials are used for the sample preparation and in the improvement of safety analysis result of aquatic products. Advanced materials for sample preparation of aquatic products were reviewed including carbon materials, metal organic frameworks, covalent organic frameworks, molecularly/ions imprinted polymers, etc. Then, applications of the advanced materials for the analysis of specific fishery analytes (antibiotics, anesthetic, preservatives, etc.) were briefly introduced. Conclusions and perspectives on advanced materials for sample preparation and safety analysis of aquatic products were also presented.

A well‐defined hierarchically porous metal–organic framework and its application in separation and purification of steviol glycosides

Chen

Huang

et al. 2022

The separation and removal of stevioside from natural product steviol glycosides to obtain high-purity rebaudioside A is of great significance for the application of steviol glycosides in food, medicine, and other fields. Here, in order to explore the adsorbent pore structure suitable for the separation of stevioside and rebaudioside A, a hierarchically porous amino-functionalized metal-organic framework (HP-NH 2 -MIL-53) with an appropriate and narrow pore size distribution was prepared using a modulator-induced defect-formation strategy. The results showed that the hierarchically porous structure with micropores and mesopores increased the specific surface area and exposed amino groups compared with original metal organic framework (NH 2 -MIL-53), and the maximum adsorption capacity of HP-NH 2 -MIL-53 for stevioside and rebaudioside A was 233.89 mg/g. The narrow pore size distribution close to 3.80 nm promoted the screening effect, resulting in a maximum adsorption selectivity of 4.13. This work proves that when the pore size of the adsorbent is between 1.41 and 3.80 nm, it has a certain pore size screening effect on stevioside and rebaudioside A, and the hierarchically porous metal-organic frameworks provide a pre-design idea of adsorbent structure for the separation of natural products with molecular weight of 800-1000 Da.