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Amperometric Determination of Aminobiphenyls Using HPLC-ED with Boron-Doped Diamond Electrode

机译：使用HPLC-掺杂金刚石电极的HPLC-Ed测定氨基苯基的测定法

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摘要

Amino derivatives of biphenyl have been proven to be genotoxic and/or carcinogenic, thus they are widely monitored in the environment as well as in biological liquids. This study was devoted to HPLC determination of 2-aminobiphenyl, 3-aminobiphenyl, and 4-aminobiphenyl in model drinking and river water samples using amperometric detection in a thin layer cell with boron doped diamond thin film electrode. Satisfactory separation of studied analytes was achieved at a ChiraDex column (Merck, Germany) with chemically bonded P-cyclodextrin in a mobile phase aqueous buffer/acetonitrile/methanol (40/30/30, v/v/v) with total separation time of six minutes. The highest detector response with satisfactory repeatability (relative standard deviation <2.9% for all aminobiphenyls) was obtained using 0.01 mol L-1 acetate buffer at pH 5.0 as an aqueous component of the mobile phase. For direct determination of aminobiphenyls in drinking and river water model samples limits of quantitation ca. 4 x 10(-7) mol L-1 were achieved. Applying off-line solid phase extraction using Lichrolut EN (Merck, Germany) cartridges and elution by diethyl ether, limits of quantitation were lowered down to the 10(-9) mol L-1 concentration range.
机译：已被证明联苯基的氨基衍生物是遗传毒性和/或致癌物质，因此它们在环境中以及生物液体中被广泛监测。本研究致力于使用硼掺杂金刚石薄膜电极的薄层电池中的浓度检测在模型饮用和河水样品中的2-氨基双苯基，3-氨基己烯基和4-氨基双烯基的HPLC测定。在流动相含水缓冲液/乙腈/甲醇（40/30/30，V / V / v）中，在具有化学键合的p-Cyclodextrin的Chiradex柱（Merck，Germany）中实现了研究的令人满意的分析物分离。六分钟。使用0.01mol L-1乙酸乙酯缓冲液作为流动相的水性组分，获得具有令人满意的重复性（所有氨基苯基的相对标准偏差<2.9％的相对标准偏差<2.9％）。用于直接测定饮用水和河水模型样品的定量CA中的氨基苯基。实现了4×10（-7）摩尔L-1。使用Lichrolut EN（Merck，Germany）盒和用乙醚洗脱的偏离固相提取，将定量限制降至10（-9）摩尔L-1浓度范围内。

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