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The analytes were adsorbed from large volume samples (60 mL) onto octadecyl silica SPE columns. After the elution of the desired compounds from sorbents with 2.0 mL acetone, 0.5 mL of eluent containing 40.0 \u03bcL chloroform was injected rapidly into 4.5 mL pure water. After extraction and centrifugation, 2 \u03bcL of the sedimented phase was injected into a <jats:styled-content style=\"fixed-case\">GC<\/jats:styled-content> equipped with a flame ionization detector. Several parameters affecting this process were investigated and optimized. Under the optimal conditions, <jats:styled-content style=\"fixed-case\">LOD<\/jats:styled-content>s ranged from 0.02 to 0.05 \u03bcg\/L, a linear dynamic range of 0.1\u2013100 \u03bcg\/L and relative <jats:styled-content style=\"fixed-case\">SD<\/jats:styled-content>s in the range of 4.4\u201310.7% were attained. Very high preconcentration factors ranging from 3895\u20137222 were achieved. The applicability of the method for the extraction of <jats:styled-content style=\"fixed-case\">BZP<\/jats:styled-content>s from different types of complicated matrices, such as tap water, fruit juices, and urine samples, was studied. The obtained results reveal that the proposed method is a good technique for the extraction and determination of <jats:styled-content style=\"fixed-case\">BZP<\/jats:styled-content>s in complex matrices.<\/jats:p>","DOI":"10.1002\/jssc.201300893","type":"journal-article","created":{"date-parts":[[2013,11,14]],"date-time":"2013-11-14T19:58:40Z","timestamp":1384459120000},"page":"287-294","source":"Crossref","is-referenced-by-count":23,"title":["<scp>SPE<\/scp> coupled with dispersive liquid\u2013liquid microextraction followed by <scp>GC<\/scp> with flame ionization detection for the determination of ultra\u2010trace amounts of benzodiazepines"],"prefix":"10.1002","volume":"37","author":[{"given":"Masoomeh","family":"Ghobadi","sequence":"first","affiliation":[{"name":"Department of Chemistry Tarbiat Modares University Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yadollah","family":"Yamini","sequence":"additional","affiliation":[{"name":"Department of Chemistry Tarbiat Modares University Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Behnam","family":"Ebrahimpour","sequence":"additional","affiliation":[{"name":"Department of Chemistry Tarbiat Modares University Tehran Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2013,12,9]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0379-0738(00)00226-7"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jchromb.2011.10.033"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chroma.2006.09.088"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/0731-7085(93)80126-L"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0731-7085(94)00070-0"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1386-1425(03)00300-7"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0728(02)01147-6"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aca.2003.08.070"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/jssc.200800342"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1080\/10826076.2011.637277"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/jssc.200600365"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/jssc.201201069"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00216-012-5877-y"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(99)00236-8"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/jssc.200500268"},{"key":"e_1_2_7_17_1","first-page":"67","volume":"25","author":"Stevens H. 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