Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental Water
A covalent organic framework (COF) based on imine was synthesized using 2,5-dihexoxyterephthalaldehyde (DHT) and 1,3,5-tris(4-aminophenyl) benzene (TAPB) as starting materials. The TAPB-DHT-COF exhibited satisfactory chemical stability, making it a promising adsorbing material for stir bar sorptive...
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2024-12-01
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| author | Jianing Sun Xixi Lian Lianzhi Wang Zhengchao Duan |
| author_facet | Jianing Sun Xixi Lian Lianzhi Wang Zhengchao Duan |
| author_sort | Jianing Sun |
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| description | A covalent organic framework (COF) based on imine was synthesized using 2,5-dihexoxyterephthalaldehyde (DHT) and 1,3,5-tris(4-aminophenyl) benzene (TAPB) as starting materials. The TAPB-DHT-COF exhibited satisfactory chemical stability, making it a promising adsorbing material for stir bar sorptive extraction (SBSE) of four estrogens, including estrone (E1), β-estradiol (E2), hexestrol (HES), and mestranol (MeEE2), in ambient water samples. The extracted analytes were subsequently analyzed using a high-performance liquid chromatography-diode array detector (HPLC-DAD). A series of parameters affecting the SBSE process, such as solution pH, ionic strength, extraction time, and desorption solvent, were investigated by the controlled variable method. Under optimal conditions, the limit of detection (LODs) for the four targeted estrogens ranged from 0.06 to 0.15 µg/L, with a linear range from 0.2 to 100 µg/L. The observed enrichment factor (EF) ranged from 39 to 49, while the theoretical EF was estimated to be 50-fold. This methodology can be applied to the identification of estrogens in three environmental water samples. |
| format | Article |
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| issn | 1420-3049 |
| language | English |
| publishDate | 2024-12-01 |
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| series | Molecules |
| spelling | doaj-art-36f93e8b2cff48839c4a5afb7880e4512025-08-20T02:38:36ZengMDPI AGMolecules1420-30492024-12-012923576310.3390/molecules29235763Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental WaterJianing Sun0Xixi Lian1Lianzhi Wang2Zhengchao Duan3School of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi 445000, ChinaSchool of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi 445000, ChinaSchool of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi 445000, ChinaSchool of Chemistry and Environmental Engineering, Hubei Minzu University, Enshi 445000, ChinaA covalent organic framework (COF) based on imine was synthesized using 2,5-dihexoxyterephthalaldehyde (DHT) and 1,3,5-tris(4-aminophenyl) benzene (TAPB) as starting materials. The TAPB-DHT-COF exhibited satisfactory chemical stability, making it a promising adsorbing material for stir bar sorptive extraction (SBSE) of four estrogens, including estrone (E1), β-estradiol (E2), hexestrol (HES), and mestranol (MeEE2), in ambient water samples. The extracted analytes were subsequently analyzed using a high-performance liquid chromatography-diode array detector (HPLC-DAD). A series of parameters affecting the SBSE process, such as solution pH, ionic strength, extraction time, and desorption solvent, were investigated by the controlled variable method. Under optimal conditions, the limit of detection (LODs) for the four targeted estrogens ranged from 0.06 to 0.15 µg/L, with a linear range from 0.2 to 100 µg/L. The observed enrichment factor (EF) ranged from 39 to 49, while the theoretical EF was estimated to be 50-fold. This methodology can be applied to the identification of estrogens in three environmental water samples.https://www.mdpi.com/1420-3049/29/23/5763covalent organic frameworkestrogensstir bar sorptive extractionhigh-performance liquid chromatographyenvironmental water samples |
| spellingShingle | Jianing Sun Xixi Lian Lianzhi Wang Zhengchao Duan Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental Water Molecules covalent organic framework estrogens stir bar sorptive extraction high-performance liquid chromatography environmental water samples |
| title | Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental Water |
| title_full | Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental Water |
| title_fullStr | Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental Water |
| title_full_unstemmed | Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental Water |
| title_short | Development and Application of a Robust Imine-Based Covalent Organic Framework for Stir Bar Sorptive Extraction of Estrogens in Environmental Water |
| title_sort | development and application of a robust imine based covalent organic framework for stir bar sorptive extraction of estrogens in environmental water |
| topic | covalent organic framework estrogens stir bar sorptive extraction high-performance liquid chromatography environmental water samples |
| url | https://www.mdpi.com/1420-3049/29/23/5763 |
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