{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T08:49:35Z","timestamp":1767862175274,"version":"3.49.0"},"reference-count":33,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2019,11,27]],"date-time":"2019-11-27T00:00:00Z","timestamp":1574812800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100003968","name":"Iran National Science Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003968","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["scijournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Sci Food Agric"],"published-print":{"date-parts":[[2020,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>BACKGROUND<\/jats:title><jats:p>Magnetic three\u2010dimensional graphene\u2010based nanoadsorbents have unique characteristics such as large surface area, good thermal and chemical stability, and high adsorption capacity that make them efficient materials in sorbent\u2010based extraction techniques. In this study, four aflatoxins (AFs) were analyzed in bread samples using magnetic three\u2010dimensional graphene as the adsorbent phase in dispersive micro solid\u2010phase extraction.<\/jats:p><\/jats:sec><jats:sec><jats:title>RESULTS AND CONCLUSIONS<\/jats:title><jats:p>In\u2010syringe magnetic sheet solid\u2010phase extraction based on magnetic three\u2010dimensional graphene in tandem with dispersive liquid\u2013liquid microextraction was used for the extraction and preconcentration of the target AFs. The effect of significant parameters of the method was investigated and the optimum conditions were determined as follows: adsorbent dosage, 20\u2009mg; desorption\/disperser solvent (methanol) volume, 700\u2009\u03bcL; desorption solvent flow rate, 0.7\u00a0mL\u2009min<jats:sup>\u22121<\/jats:sup>; pH, neutral; salt (NaCl) concentration, 10% (w\/v); extraction solvent (chloroform) volume, 250\u2009\u03bcL; and centrifugation rate (and time), 4000\u2009rpm (5\u00a0min). The limits of detection and quantification were in the ranges 0.043\u20130.083 and 0.14\u20130.28\u2009\u03bcg\u2009kg<jats:sup>\u22121<\/jats:sup>, respectively. The extraction method was followed by the HPLC technique with fluorescence detection and applied to the determination of the AFs in four different Iranian fresh and moldy bread samples. The relative recoveries were in the range 84\u2013107% with relative standard deviations of 3.9\u20138.6%. \u00a9 2019 Society of Chemical Industry<\/jats:p><\/jats:sec>","DOI":"10.1002\/jsfa.10109","type":"journal-article","created":{"date-parts":[[2019,11,2]],"date-time":"2019-11-02T04:24:17Z","timestamp":1572668657000},"page":"1048-1055","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Integrated in\u2010syringe magnetic sheet solid\u2010phase extraction and dispersive liquid\u2013liquid microextraction for determination of aflatoxins in fresh and moldy breads"],"prefix":"10.1002","volume":"100","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6300-1954","authenticated-orcid":false,"given":"Hassan","family":"Sereshti","sequence":"first","affiliation":[{"name":"School of Chemistry, College of Science University of Tehran  Tehran 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