AI Article Synopsis
- Researchers synthesized a novel 4 + 2 covalent magnetic organic framework (COF) using specific compounds at room temperature, resulting in a structure with superparamagnetism and a large surface area.
- The COF was successfully integrated into a magnetic solid phase extraction (MSPE) method to enrich trace amounts of parabens in environmental water, with key parameters optimized for improved extraction efficiency.
- The developed method demonstrated excellent validation results, with high linear ranges and recoveries, showing the potential of the magnetic COF as an effective adsorbent for environmental analysis of parabens.
Article Abstract
A novel 4 + 2 covalent magnetic organic framework (COF) with core-shell structure was synthesized for the first time with N, N, N', N'-Tetrakis (4-aminophenyl)-1, 4- benzenediamine (TPDA) and 2, 6-Pyridinedicarboxaldehyde (PCBA) at room temperature. The synthesized magnetic TPDA-PCBA-COF has a large specific surface area and superparamagnetism, which makes it an ideal sorbent for trace analytes enrichment. To this end, we combined it with magnetic solid phase extraction (MSPE) to enrich trace parabens in environmental water. The parameters affecting the enrichment efficiency of magnetic solid phase extraction, such as the amount of FeO@TPDA-PCBA-COF, extraction time, pH of samples, salt concentration, desorption solvent volume and desorption time, were optimized. A simple method for extraction and determination of parabens in water samples by MSPE combined with high performance liquid chromatography (HPLC) was established under optimized conditions. The validation results revealed that the linear ranges were at 1.0-5.0 × 10 ng mL with R value between 0.9915 and 0.9999, the spiked recoveries were in the range of 82.8% to 99.9% and RSDs were lower than 10%. The method was further applied to the determination of parabens in water samples, with recoveries in the range of 82.2% to 110.0% and RSDs ≤ 7.7%. These results suggest that the magnetic TPDA-PCBA-COF could be used as a promising adsorbent for efficient extraction and quantitation of parabens in environmental water samples.
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| http://dx.doi.org/10.1016/j.chroma.2023.463850 | DOI Listing |
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