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The NACE separation medium consisted of 80\u2005mM ammonium acetate in 50% ACN, 33% 2\u2010propanol, 12% hexane and 5% methanol. A stacking effect was obtained by reducing the concentration of ammonium acetate in the separation medium for all injected samples. The LOD was estimated to 1\u2005\u03bcM (5.6\u2005fmol) of Peth with conventional UV detection, equalling 0.4\u2005\u03bcmol\/L blood. Peth was successfully determined in extracts of human blood samples. Separation of Peth from other blood lipids in the lipid extract sample was performed in 5\u2005min. The method facilitates smaller sample volumes and performs about ten times faster compared to earlier chromatographical methods.<\/jats:p>","DOI":"10.1002\/elps.200700548","type":"journal-article","created":{"date-parts":[[2008,3,26]],"date-time":"2008-03-26T10:47:41Z","timestamp":1206528461000},"page":"1667-1671","source":"Crossref","is-referenced-by-count":39,"title":["Nonaqueous capillary electrophoresis for analysis of the ethanol consumption biomarker phosphatidylethanol"],"prefix":"10.1002","volume":"29","author":[{"given":"Arthur","family":"Varga","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Staffan","family":"Nilsson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2008,4,17]]},"reference":[{"key":"e_1_2_1_2_2","first-page":"37","volume-title":"Assessing Alcohol Problems: A Guide for Clinicians and Researchers","author":"Allen J. 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