{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T03:04:07Z","timestamp":1792551847779,"version":"4.5.0"},"reference-count":36,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,25]],"date-time":"2022-12-25T00:00:00Z","timestamp":1671926400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Jiangsu Graduate Research and Practice Innovation Program","award":["SJCX22-0478"],"award-info":[{"award-number":["SJCX22-0478"]}]},{"name":"Jiangsu Graduate Research and Practice Innovation Program","award":["2018YFC1602800"],"award-info":[{"award-number":["2018YFC1602800"]}]},{"name":"National Key R&amp;D Program","award":["SJCX22-0478"],"award-info":[{"award-number":["SJCX22-0478"]}]},{"name":"National Key R&amp;D Program","award":["2018YFC1602800"],"award-info":[{"award-number":["2018YFC1602800"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Based on the specific binding of sulfonic acid groups to melamine, \u03b2-agonists and other compounds, Fe3O4 nano-magnetic beads were coated with polystyrene using an improved micro-suspension emulsion polymerization method, thus forming core\u2013shell magnetic polystyrene microspheres (Fe3O4@PS) with Fe3O4 as the core and polystyrene as the shell. These functionalized microspheres, which can be used as magnetic solid-phase extraction (MSPE) adsorbent, were prepared after further sulfonation. These microspheres were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), particle size analysis and saturation magnetization measurement. The results showed that these sulfonated magnetic polystyrene microspheres had favorable sphericity. The particle size of these microspheres ranged from 1 \u03bcm to 10 \u03bcm. Additionally, these microspheres had good dispersion and magnetic responses in both inorganic and organic solvents. Moreover, these functionalized magnetic polystyrene microspheres were tested and evaluated by high performance liquid chromatography tandem mass spectrometry (HPLC-MS\/MS). The results indicated that these sulfonated magnetic polystyrene microspheres (Fe3O4@SPS) could effectively adsorb such illegal additives as \u03b2-agonists and melamine in the food matrix.<\/jats:p>","DOI":"10.3390\/polym15010077","type":"journal-article","created":{"date-parts":[[2022,12,27]],"date-time":"2022-12-27T07:30:06Z","timestamp":1672126206000},"page":"77","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["Preparation of Functionalized Magnetic Polystyrene Microspheres and Their Application in Food Safety Detection"],"prefix":"10.3390","volume":"15","author":[{"given":"Xin","family":"Teng","sequence":"first","affiliation":[{"name":"College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xingyu","family":"Ding","sequence":"additional","affiliation":[{"name":"College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhuxin","family":"She","sequence":"additional","affiliation":[{"name":"College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Li","sequence":"additional","affiliation":[{"name":"College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaohui","family":"Xiong","sequence":"additional","affiliation":[{"name":"College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"3590","DOI":"10.3390\/molecules25163590","article-title":"Rapid multi-residue detection methods for pesticides and veterinary drugs","volume":"25","author":"Jia","year":"2020","journal-title":"Molecules"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"7528","DOI":"10.1021\/jf0346511","article-title":"Determination of the fluoroquinolone enrofloxacin in edible chicken muscle by supercritical fluid extraction and liquid chromatography with fluorescence detection","volume":"51","author":"Shim","year":"2003","journal-title":"J. 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