{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T21:54:17Z","timestamp":1768427657092,"version":"3.49.0"},"reference-count":18,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2004,11,22]],"date-time":"2004-11-22T00:00:00Z","timestamp":1101081600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["scijournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pest Management Science"],"published-print":{"date-parts":[[2005,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A practical method for analysis of residues of imidacloprid in baked tobacco leaves has been developed using HPLC with liquid\u2013liquid partition clean\u2010up. Imidacloprid was extracted with ethyl acetate under ultrasound, and cleaned up by liquid\u2013liquid partition with 50 g litre<jats:sup>\u22121<\/jats:sup> aqueous sodium chloride followed by dichloromethane. The water\u2010soluble and fat\u2010soluble components in tobacco, which interfere with imidacloprid in HPLC, were removed. The separation was performed on a Supelco LC\u201018 column (250 mm \u00d7 4.6 mm ID) with a mobile phase of acetonitrile + 5 m<jats:sc>M<\/jats:sc> ammonium acetate (20 + 80 by volume) at a flow\u2010rate of 1 ml min<jats:sup>\u22121<\/jats:sup>. The baseline separation between imidacloprid and the tobacco blank was achieved within 10 min. With a detection wavelength at 270 nm, the limit of quantitation was 0.04 mg kg<jats:sup>\u22121<\/jats:sup>. The recovery ranged from 89.8 to 95.4% and the RSDs were less than 2.3%. The proposed method was successfully employed for the determination of imidacloprid residues in 300 samples of flue\u2010cured tobacco leaves. Copyright \u00a9 2004 Society of Chemical Industry<\/jats:p>","DOI":"10.1002\/ps.987","type":"journal-article","created":{"date-parts":[[2004,11,22]],"date-time":"2004-11-22T07:17:39Z","timestamp":1101107859000},"page":"511-514","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Analysis of residues of imidacloprid in tobacco by high\u2010performance liquid chromatography with liquid\u2013liquid partition cleanup"],"prefix":"10.1002","volume":"61","author":[{"given":"Hongxia","family":"Liu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juanmei","family":"Song","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shusheng","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lingbo","family":"Qu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yufen","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yangjie","family":"Wu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huimin","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2004,11,22]]},"reference":[{"key":"e_1_2_6_2_2","first-page":"379","article-title":"Determination of imidacloprid on barley seeds by near infrared spectroscopy","volume":"65","author":"Pigeon O","year":"2000","journal-title":"Meded Fac Landbouw Toegepaste Biol Wet"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(98)00351-1"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(01)01039-X"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0039-9140(00)00576-2"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(00)01126-0"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(03)00835-5"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9673(96)00402-5"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1039\/b101167g"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/0021-9673(95)00764-4"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(97)00652-3"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(99)00879-1"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s002160100946"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9673(02)01034-8"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-2670(02)00255-6"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1021\/jf025539q"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1021\/jf0261102"},{"key":"e_1_2_6_18_2","unstructured":"The European Union on\u2010line Office Documents http:\/\/European.eu.int. 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