{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T12:28:01Z","timestamp":1768825681884,"version":"3.49.0"},"reference-count":29,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2012,12,15]],"date-time":"2012-12-15T00:00:00Z","timestamp":1355529600000},"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":[[2013,1]]},"abstract":"<jats:p>An ionic liquid (IL) based dispersive liquid\u2013liquid microextraction combined with <jats:styled-content style=\"fixed-case\">HPLC<\/jats:styled-content> hydride generation atomic fluorescence spectrometry method for the preconcentration and determination of mercury species in environmental water samples is described. Four mercury species (MeHg<jats:sup>+<\/jats:sup>, EtHg<jats:sup>+<\/jats:sup>, PhHg<jats:sup>+<\/jats:sup>, and Hg<jats:sup>2+<\/jats:sup>) were complexed with dithionate and the neutral chelates were extracted into IL drops using dispersive liquid\u2013liquid microextraction. Variables affecting the formation and extraction of mercury dithizonates were optimized. The optimum conditions found were as follows: IL\u2010type and amount, 0.05 g of 1\u2010octyl\u20103\u2010methylimidazolium hexafluorophosphate; dispersive solvents type and amount, 500 \u03bcL of acetone; pH, 6; extraction time, 2 min; centrifugation time, 12 min; and no sodium chloride addition. Under the optimized conditions, the detection limits of the analytes were 0.031 \u03bcg\/L for Hg<jats:sup>2+<\/jats:sup>, 0.016 \u03bcg\/L for MeHg<jats:sup>+<\/jats:sup>, 0.024 \u03bcg\/L for EtHg<jats:sup>+<\/jats:sup>, and 0.092 \u03bcg\/L for PhHg<jats:sup>+<\/jats:sup>, respectively. The repeatability of the method, expressed as <jats:styled-content style=\"fixed-case\">RSD<\/jats:styled-content>, was between 1.4 and 5.2% (<jats:italic>n<\/jats:italic> = 10), and the average recoveries for spiked test were 96.9% for Hg<jats:sup>2+<\/jats:sup>, 90.9% for MeHg<jats:sup>+<\/jats:sup>, 90.5% for EtHg<jats:sup>+<\/jats:sup>, 92.3% for PhHg<jats:sup>+<\/jats:sup>, respectively. The developed method was successfully applied for the speciation of mercury in environmental water samples.<\/jats:p>","DOI":"10.1002\/jssc.201200571","type":"journal-article","created":{"date-parts":[[2012,12,18]],"date-time":"2012-12-18T11:04:16Z","timestamp":1355828656000},"page":"414-420","source":"Crossref","is-referenced-by-count":32,"title":["Ionic liquids dispersive liquid\u2013liquid microextraction and <scp>HPLC<\/scp>\u2010atomic fluorescence spectrometric determination of mercury species in environmental waters"],"prefix":"10.1002","volume":"36","author":[{"given":"Xixi","family":"Song","sequence":"first","affiliation":[{"name":"College of Chemistry and Materials Engineering Wenzhou University  Wenzhou P. R. China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingde","family":"Ye","sequence":"additional","affiliation":[{"name":"College of Chemistry and Materials Engineering Wenzhou University  Wenzhou P. R. 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