{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T20:09:56Z","timestamp":1791230996654,"version":"4.1.0"},"reference-count":25,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2010,2,12]],"date-time":"2010-02-12T00:00:00Z","timestamp":1265932800000},"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":[[2010,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A comparison between C<jats:sub>18<\/jats:sub> silica and multi\u2010walled carbon nanotubes (MWCNTs) in the extraction of Chlorpyrifos and Phosalone in environmental water samples was carried out using HPLC. Parameters affecting the extraction were type and volume of elution solvent, pH and flow rate of sample through the adsorbent. The optimum conditions obtained by C<jats:sub>18<\/jats:sub> cartridge for adsorption of these pesticides were 4\u2009mL dichloromethane as elution solvent, sample pH of 5, flow rate of 1\u2009mL\/min, and those for MWCNT cartridge were 3\u2009mL dichloromethane, pH of 5 and flow rate of 10\u2009mL\/min, respectively. Optimized mobile phase for separation and determination of these compounds by HPLC was methanol\/water (80:20\u2009v\/v) with pH=5 (adjusted with phosphate buffer). Under optimal chromatographic and SPE conditions, LOD, linear range and precision (RSD <jats:italic>n<\/jats:italic>=8) were 3.03\u00d710<jats:sup>\u22123<\/jats:sup>, 0.01\u20135.00\u2009\u03bcg\/mL and 2.7% for Chlorpyrifos and 4.03\u00d710<jats:sup>\u22124<\/jats:sup>, 0.01\u20135.00\u2009\u03bcg\/mL and 2.3% for Phosalone, in C<jats:sub>18<\/jats:sub> cartridge, respectively. These values for MWCNT were 4.02\u00d710<jats:sup>\u22126<\/jats:sup>, 0.001\u20130.500\u2009\u03bcg\/mL and 1.8% for Chlorpyrifos and 1.02\u00d710<jats:sup>\u22126<\/jats:sup>, 0.001\u20130.500\u2009\u03bcg\/mL and 1.5% for Phosalone, respectively.<\/jats:p>","DOI":"10.1002\/jssc.200900494","type":"journal-article","created":{"date-parts":[[2010,2,12]],"date-time":"2010-02-12T13:02:10Z","timestamp":1265979730000},"page":"1044-1051","source":"Crossref","is-referenced-by-count":37,"title":["Comparison of C<sub>18<\/sub> silica and multi\u2010walled carbon nanotubes as the adsorbents for the solid\u2010phase extraction of Chlorpyrifos and Phosalone in water samples using HPLC"],"prefix":"10.1002","volume":"33","author":[{"given":"Mohammad Reza","family":"Hadjmohammadi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Moazameh","family":"Peyrovi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pourya","family":"Biparva","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2010,4,16]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/0165-9936(94)85006-2"},{"key":"e_1_2_6_3_2","first-page":"233","volume":"44","author":"Dubois K. 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