Natalia Morales , Stuart C. Thickett , Fernando Maya
{"title":"交联剂/多孔剂比例对用于固相萃取的海绵嵌套聚合物整体的影响。","authors":"Natalia Morales , Stuart C. Thickett , Fernando Maya","doi":"10.1016/j.chroma.2024.465124","DOIUrl":null,"url":null,"abstract":"<div><p>Polymer monoliths can be polymerised within different molds, but limited options are available for the preparation of free-standing polymer monoliths for analytical sample preparation, and in particular, solid-phase extraction (SPE). Commercial melamine-formaldehyde sponges can be used as supports for the preparation of polymer monoliths, due its flexibility, giving various shapes to monoliths. Herein, the crosslinker/porogen ratio of highly porous sponge-nested divinylbenzene (DVB) polymer monoliths has been evaluated. Monoliths prepared using different crosslinker/porogen ratios were applied to the extraction of bisphenol F, bisphenol A, bisphenol AF, and bisphenol B. Monoliths containing 50 wt % DVB and 50 wt % porogens presented the highest recovery of bisphenols. Under the optimised conditions, the developed method showed a linear range between 2.5 µg L<sup>−1</sup> and 150 µg L<sup>−1</sup> for BPA and BPAF, and between 5 µg L<sup>−1</sup> and 150 µg L<sup>−1</sup> for BPB and BPF. The limits of detection (LOD, S/N = 3) and limits of quantification (LOQ, S/N = 10) ranged from 0.36 µg L<sup>−1</sup> to 1.09 µg L<sup>−1</sup>, and from 1.20 µg L<sup>−1</sup> to 3.65 µg L<sup>−1</sup>, respectively. The recoveries for spiked bisphenols (10 µg L<sup>−1</sup>) in tap water and water contained in a polycarbonate containers were between 82 % and 114 %.</p></div>","PeriodicalId":347,"journal":{"name":"Journal of Chromatography A","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0021967324004989/pdfft?md5=d25bff2156a3f3efe2110224fa71b7c9&pid=1-s2.0-S0021967324004989-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Effect of crosslinker/porogen ratio on sponge-nested polymer monoliths for solid-phase extraction\",\"authors\":\"Natalia Morales , Stuart C. Thickett , Fernando Maya\",\"doi\":\"10.1016/j.chroma.2024.465124\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Polymer monoliths can be polymerised within different molds, but limited options are available for the preparation of free-standing polymer monoliths for analytical sample preparation, and in particular, solid-phase extraction (SPE). Commercial melamine-formaldehyde sponges can be used as supports for the preparation of polymer monoliths, due its flexibility, giving various shapes to monoliths. Herein, the crosslinker/porogen ratio of highly porous sponge-nested divinylbenzene (DVB) polymer monoliths has been evaluated. Monoliths prepared using different crosslinker/porogen ratios were applied to the extraction of bisphenol F, bisphenol A, bisphenol AF, and bisphenol B. Monoliths containing 50 wt % DVB and 50 wt % porogens presented the highest recovery of bisphenols. Under the optimised conditions, the developed method showed a linear range between 2.5 µg L<sup>−1</sup> and 150 µg L<sup>−1</sup> for BPA and BPAF, and between 5 µg L<sup>−1</sup> and 150 µg L<sup>−1</sup> for BPB and BPF. The limits of detection (LOD, S/N = 3) and limits of quantification (LOQ, S/N = 10) ranged from 0.36 µg L<sup>−1</sup> to 1.09 µg L<sup>−1</sup>, and from 1.20 µg L<sup>−1</sup> to 3.65 µg L<sup>−1</sup>, respectively. The recoveries for spiked bisphenols (10 µg L<sup>−1</sup>) in tap water and water contained in a polycarbonate containers were between 82 % and 114 %.</p></div>\",\"PeriodicalId\":347,\"journal\":{\"name\":\"Journal of Chromatography A\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-06-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0021967324004989/pdfft?md5=d25bff2156a3f3efe2110224fa71b7c9&pid=1-s2.0-S0021967324004989-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Chromatography A\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0021967324004989\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIOCHEMICAL RESEARCH METHODS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chromatography A","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021967324004989","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
Effect of crosslinker/porogen ratio on sponge-nested polymer monoliths for solid-phase extraction
Polymer monoliths can be polymerised within different molds, but limited options are available for the preparation of free-standing polymer monoliths for analytical sample preparation, and in particular, solid-phase extraction (SPE). Commercial melamine-formaldehyde sponges can be used as supports for the preparation of polymer monoliths, due its flexibility, giving various shapes to monoliths. Herein, the crosslinker/porogen ratio of highly porous sponge-nested divinylbenzene (DVB) polymer monoliths has been evaluated. Monoliths prepared using different crosslinker/porogen ratios were applied to the extraction of bisphenol F, bisphenol A, bisphenol AF, and bisphenol B. Monoliths containing 50 wt % DVB and 50 wt % porogens presented the highest recovery of bisphenols. Under the optimised conditions, the developed method showed a linear range between 2.5 µg L−1 and 150 µg L−1 for BPA and BPAF, and between 5 µg L−1 and 150 µg L−1 for BPB and BPF. The limits of detection (LOD, S/N = 3) and limits of quantification (LOQ, S/N = 10) ranged from 0.36 µg L−1 to 1.09 µg L−1, and from 1.20 µg L−1 to 3.65 µg L−1, respectively. The recoveries for spiked bisphenols (10 µg L−1) in tap water and water contained in a polycarbonate containers were between 82 % and 114 %.
期刊介绍:
The Journal of Chromatography A provides a forum for the publication of original research and critical reviews on all aspects of fundamental and applied separation science. The scope of the journal includes chromatography and related techniques, electromigration techniques (e.g. electrophoresis, electrochromatography), hyphenated and other multi-dimensional techniques, sample preparation, and detection methods such as mass spectrometry. Contributions consist mainly of research papers dealing with the theory of separation methods, instrumental developments and analytical and preparative applications of general interest.