Low-cost Scholl-coupling microporous polymer as an efficient solid-phase microextraction coating for the detection of
Xintong Xie1, Junhui Wang1, Juan Zheng1
1MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, No. 135, Xingang Xi Road, Guangzhou, Guangdong, 510275, China.
Analytica Chimica Acta
|June 17, 2018
Summary
A novel, cost-effective microporous polymer fiber was developed for solid-phase microextraction (SPME). This new material demonstrates superior extraction efficiency for light aromatic compounds compared to commercial fibers.
Area of Science:
- Materials Science
- Analytical Chemistry
- Environmental Science
Background:
- Solid-phase microextraction (SPME) is a widely used technique for sample preparation.
- Developing cost-effective and efficient extraction materials is crucial for environmental analysis.
Purpose of the Study:
- To synthesize a novel, cost-effective microporous polymer for SPME applications.
- To evaluate its performance for the extraction of light aromatic compounds from environmental water samples.
Main Methods:
- One-step Scholl-coupling reaction for polymer synthesis.
- Characterization of chemical, morphological, and pore structure properties.
- Optimization of headspace SPME parameters (temperature, time, salt concentration).
Main Results:
- Synthesized polymer exhibits a large surface area and narrow pore distribution (1.2 nm).
- The home-made SPME fiber showed superior extraction efficiencies over commercial PDMS fibers.
- Achieved low detection limits (0.01-1.3 ng/L) and wide linear ranges (50-20000 ng/L).
Conclusions:
- The developed microporous polymer is a promising, cost-effective material for SPME.
- The method is suitable for the determination of light aromatic compounds in environmental water samples with high recoveries (83.2%-116%).
More Related Videos
Related Concept Videos
01:25Aromatic Compounds: Overview
14.2K
In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday isolated...
In 1825, Faraday isolated...
14.2K
01:14NMR Spectroscopy of Aromatic Compounds
6.4K
Aromatic compounds can be identified or analyzed using proton NMR and carbon‐13 NMR. Typically, aromatic hydrogens or hydrogens directly bonded to the aromatic rings are strongly deshielded by the aromatic ring current. Therefore, they absorb in the range of 6.5–8.0 ppm in proton NMR spectra. For instance, aromatic hydrogens directly bonded to the benzene ring absorb at 7.3 ppm. However, aromatic hydrogens of larger rings absorb farther upfield or downfield than the ideal range.
6.4K
01:23Nomenclature of Aromatic Compounds with a Single Substituent
10.4K
Benzene is the simplest aromatic hydrocarbon or arene. The IUPAC names for simple monosubstituted benzene derivatives are derived by adding the substituent's name as a prefix to the parent benzene. For example, halobenzene, where the halogen could be fluoro (F), chloro (Cl), bromo (Br), and iodo (I).
10.4K
01:13Five-Membered Heterocyclic Aromatic Compounds: Overview
5.5K
Heterocyclic aromatic compounds are cyclic compounds that are aromatic and have one or more heteroatoms—atoms other than carbon, in the ring. Depending upon the number of atoms present in the ring, they can be either five or six-membered. Examples of five-membered heterocyclic aromatic compounds include pyrrole, furan, thiophene, and imidazole. Pyrrole consists of one nitrogen atom having one lone pair of electrons. Furan and thiophene have one oxygen and one sulfur heteroatom,...
5.5K
01:11Nomenclature of Aromatic Compounds with Multiple Substituents
10.6K
When more than one substituent is present on the benzene ring, the IUPAC nomenclature depends on the number of substituents present.
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...
For disubstituted benzene derivatives, with two groups attached to the benzene ring, three constitutional isomers are possible. For example, consider dimethyl benzene, often called xylene, where the second methyl group can be substituted at the second, third, or fourth carbon. The relative position of the substituents is represented by prefixes ortho, meta, or...
10.6K
01:23Mass Spectrometry: Aromatic Compound Fragmentation
2.5K
Upon ionization, aromatic compounds generate a molecular ion that is observed as a prominent peak in their mass spectra. For example, the molecular ion peak for benzene appears at a mass-to-charge ratio of 78, while toluene is observed at a mass-to-charge ratio of 92. The molecular ion benzene is highly stable and does not readily undergo further fragmentation due to the significant amount of energy required to disrupt the aromatic stability of the benzene ring. In contrast, the molecular ion...
2.5K