Determination of aniline derivatives in water samples after preconcentration with oxidized multiwalled carbon nanotubes as solid-phase extraction disk
Determination of aniline derivatives in water samples after preconcentration with oxidized multiwalled carbon nanotubes as solid-phase extraction disk作者机构：Department of Chemistry for Materials Graduate School of Engineering Mie University Tsu 514-8507 Japan Environmental Preservation Center Mie University Tsu 514-8507 Japan
出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)
年 卷 期：2012年第6卷第3期
页 面：270-275页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070205[理学-凝聚态物理] 070302[理学-分析化学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学]
基 金：the Ministry of Education Culture Sports Science and Technology of Japan
主 题：aniline determination solid-phase extraction,oxidized multiwalled carbon nanotubes water sample,HPLC-UV
摘 要：A sensitive and selective preconcentration method using solid-phase extraction （SPE） disk made from oxidized multiwalled carbon nanotubes （OMWCNTs）, has been developed for the determination of aniline derivatives, such as 2-nitroaniline （2-NA）, 4- nitroaniline （4-NA）, and 2,4-dichloroaniline （2,4-DCA） in water samples. Anilines were extracted onto OMWCNT disk and then determined by high performance liquid chromatography （HPLC） with UV detector. Several parameters on the recovery of the analytes were investigated. The experimental results showed that it was possible to obtain quantitative analysis when the solution pH was 8 using 200 mL of validation solution containing 2 ug of anilines and 10 mL of acetonitrile/ethanol （8/2, v/v） as an eluent. Relative standard deviations for five determinations were 7.5% （2-NA）, 6.5% （4-NA） and 3.8% （2,4-DCA） under optimum conditions. The linear range of calibration curves were 0.5 *** 1 to 15 ***-1 for each analyte with good correlation coefficients. The detection limits （3S/N） of 2-NA, 4-NA and 31 *** -1 and 26 ***-1 was successfully applied to 2,4-DCA were *** -1, respectively. Our method the determination of aniline compounds in fiver water sample with high precision and accuracy.
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