{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T00:59:23Z","timestamp":1760576363543,"version":"build-2065373602"},"reference-count":38,"publisher":"Wiley","issue":"23","license":[{"start":{"date-parts":[[2015,9,29]],"date-time":"2015-09-29T00:00:00Z","timestamp":1443484800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"National Scientific Foundation of China","award":["81274065"],"award-info":[{"award-number":["81274065"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electrophoresis"],"published-print":{"date-parts":[[2015,12]]},"abstract":"<jats:p>In this work, a PVP\u2010stabilized graphene was used in MEKC for the separation of tanshinones. Seven structurally similar tanshinones were studied, that is, tanshinone IIB, dihydrotanshinone I, tanshinone I, cryptotanshinone, 1,2\u2010dihydrotanshinone I, miltirone, and tanshinone IIA. To achieve optimal conditions, graphene concentration, sample solvent composition, SDS concentration, 2\u2010propanolconcentration, and buffer pH were investigated. At a separation voltage of 30 kV and a 41.5 cm effective length fused\u2010silica capillary, good resolution within 12 min was performed using 10 mM borate buffer (pH 9.3) containing 30 mM SDS, 10% v\/v 2\u2010propanol and 6 \u03bcg\/mL graphene. The method was validated in terms of linearity (<jats:italic>r<\/jats:italic><jats:sup>2<\/jats:sup> &gt; 0.9970), intra\u2010 and inter\u2010day precision were less than 3.56 and 4.83%, respectively. The proposed method was then successfully applied to Danshentong capsule, an herbal preparation from <jats:italic>Salvia miltiorrhiza<\/jats:italic>. Our results indicated the high separation efficiency of PVP\u2010stabilized graphene provided new opportunities for the analysis of complex samples.<\/jats:p>","DOI":"10.1002\/elps.201500264","type":"journal-article","created":{"date-parts":[[2015,9,2]],"date-time":"2015-09-02T15:55:20Z","timestamp":1441209320000},"page":"2874-2880","source":"Crossref","is-referenced-by-count":4,"title":["Efficient separation of tanshinones by polyvinylpyrrolidone\u2010stabilized graphene\u2010modified micellar electrokinetic chromatography"],"prefix":"10.1002","volume":"36","author":[{"given":"Hua","family":"Yang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Natural Medicines China Pharmaceutical University  Nanjing P. R. China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yao","family":"Ding","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Natural Medicines China Pharmaceutical University  Nanjing P. R. 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