{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T06:06:58Z","timestamp":1770962818538,"version":"3.50.1"},"reference-count":39,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,1,29]],"date-time":"2014-01-29T00:00:00Z","timestamp":1390953600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Separation Science"],"published-print":{"date-parts":[[2014,3]]},"abstract":"<jats:p>A novel method using vortex\u2010assisted surfactant\u2010enhanced\u2010emulsification liquid\u2013liquid microextraction has been developed for the extraction of phthalate esters (<jats:styled-content style=\"fixed-case\">PAE<\/jats:styled-content>s) in <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hinese liquor samples prior to analysis by <jats:styled-content style=\"fixed-case\">GC<\/jats:styled-content>\u2013<jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content>. In the proposed method, a high\u2010density extraction solvent (carbon tetrachloride) was dispersed into samples with the aid of a surfactant (<jats:styled-content style=\"fixed-case\">T<\/jats:styled-content>riton <jats:styled-content style=\"fixed-case\">X<\/jats:styled-content>\u2010100) and vortex agitation, resulting in a short extraction equilibrium (30 s). After centrifugation, a single microdrop of solvent was easily collected for <jats:styled-content style=\"fixed-case\">GC<\/jats:styled-content>\u2013<jats:styled-content style=\"fixed-case\">MS<\/jats:styled-content> analysis. Key factors that affected the extraction efficiency were optimized. Under the optimum conditions, linearity was found in the range from 0.05 to 50 \u03bcg\/L. Coefficients of determination varied from 0.9938 to 0.9971. LODs, based on an S\/N of 3, ranged from 4.9 to 13 ng\/L. Enrichment factors varied from 140 to 184. Reproducibility and recoveries were assessed by testing a series of three liquor samples that were spiked with different concentration levels. Finally, the proposed method was successfully applied to the determination of <jats:styled-content style=\"fixed-case\">PAE<\/jats:styled-content>s in 16 Chinese liquor samples. In this work, high\u2010density\u2010solvent vortex\u2010assisted surfactant\u2010enhanced\u2010emulsification liquid\u2013liquid microextraction was applied for the first time for the extraction of <jats:styled-content style=\"fixed-case\">PAE<\/jats:styled-content>s in <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content>hinese liquor samples and was proved to be simple, rapid, and sensitive.<\/jats:p>","DOI":"10.1002\/jssc.201301033","type":"journal-article","created":{"date-parts":[[2014,1,10]],"date-time":"2014-01-10T13:57:00Z","timestamp":1389362220000},"page":"684-690","source":"Crossref","is-referenced-by-count":36,"title":["Determination of phthalate esters in liquor samples by vortex\u2010assisted surfactant\u2010enhanced\u2010emulsification liquid\u2013liquid microextraction followed by <scp>GC<\/scp>\u2013<scp>MS<\/scp>"],"prefix":"10.1002","volume":"37","author":[{"given":"Geng","family":"Leng","sequence":"first","affiliation":[{"name":"School of Resources and 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