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The surface morphologies and structures of AC\/DBMNs were characterized by Fourier transform infrared spectroscopy, transmission and scanning electron microscopy, X\u2010ray diffraction, Brunauer\u2013Emmett\u2013Teller surface area, vibrating sample magnetometer and <jats:italic>\u03b6<\/jats:italic>\u2010potential measurements. The experimental parameters including sample volume, sample pH, adsorbent amount, extraction time, elution solvent and desorption time were investigated in detail. Under the optimum conditions, the method exhibited good linearity (<jats:italic>r<\/jats:italic>\u2009&gt;\u20090.9993) within the concentration ranges of 0.03\u20131.0\u2009mg\/L. Moreover, the limits of detection and quantification were 0.01 and 0.03\u2009mg\/L, respectively. The enrichment factor was 5, and good recoveries (88.9\u201397.3%) with relative standard deviations in the range of 5.6\u20136.8% (<jats:italic>n<\/jats:italic>\u2009=\u20096) for inter\u2010day and 6.3\u20138.1% (<jats:italic>n<\/jats:italic>\u2009=\u20096) for intra\u2010day were achieved. The developed method was successfully applied to the analysis of <jats:italic>S\u2010<\/jats:italic>PMA in urine samples. In addition, this accurate and sensitive method has great potential to be applied in the early screening and clinical diagnosis of the workers exposed to benzene.<\/jats:p>","DOI":"10.1002\/bmc.4834","type":"journal-article","created":{"date-parts":[[2020,3,23]],"date-time":"2020-03-23T12:46:33Z","timestamp":1584967593000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Activated carbon\/diatomite\u2010based magnetic nanocomposites for magnetic solid\u2010phase extraction of <i>S<\/i>\u2010phenylmercapturic acid from human urine"],"prefix":"10.1002","volume":"34","author":[{"given":"Xiaoyue","family":"Shan","sequence":"first","affiliation":[{"name":"Hangzhou Occupational Disease Prevention and Control Hospital  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Siwei","family":"Tan","sequence":"additional","affiliation":[{"name":"Hangzhou Occupational Disease Prevention and Control Hospital  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanpeng","family":"Shi","sequence":"additional","affiliation":[{"name":"Hangzhou Occupational Disease Prevention and Control Hospital  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ji","family":"Shao","sequence":"additional","affiliation":[{"name":"Hangzhou Occupational Disease Prevention and Control Hospital  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kewen","family":"Su","sequence":"additional","affiliation":[{"name":"Hangzhou Occupational Disease Prevention and Control Hospital  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ling","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hangzhou Occupational Disease Prevention and Control Hospital  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hui","family":"Feng","sequence":"additional","affiliation":[{"name":"China College of Chemistry and Life Sciences Zhejiang Normal University  Jinhua China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8551-8279","authenticated-orcid":false,"given":"Haipeng","family":"Ye","sequence":"additional","affiliation":[{"name":"Hangzhou Occupational Disease Prevention and Control Hospital  Hangzhou China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,4,13]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1080\/19443994.2015.1129509"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arabjc.2010.08.016"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/JOM.0b013e3181cc9cf0"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0378-4347(00)00491-6"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.toxlet.2011.11.031"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jchromb.2015.07.027"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cej.2015.11.028"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1080\/00498250601001662"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1136\/oem.2009.046839"},{"key":"e_1_2_8_11_1","first-page":"119","article-title":"Interaction of diatom silica with graphene","volume":"6","author":"Dalagan J. 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