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首页> 外文期刊>Journal of the Brazilian Chemical Society >Development of a method by HPLC to determine LAS and its application in anaerobic reactors
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Development of a method by HPLC to determine LAS and its application in anaerobic reactors

机译：HPLC测定LAS的方法的开发及其在厌氧反应器中的应用

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This work describes the development and validation of a method using High Performance Liquid Chromatography (HPLC) for Linear Alkylbenzene Sulfonate (LAS) determination in sample of wastewater from anaerobic reactors. The applied LAS standard was the dodecylbenzene sulfonic acid-sodium salt, which presents four main peaks in the chromatogram, related to different homologous of the linear alkyl chain. Different chromatographic conditions were tested with C-18, C-12 and C-8 as stationary phases, ultraviolet and fluorescence detectors, mobile phase (MP) compositions and programming time of elution gradient. The best chromatographic condition was obtained with the C-8 column, MP: methanol and of sodium perchlorate (0.075 mol L-1). The validation of this method was made with the calibration of LAS curves using water and synthetic substrate as solvents. The method was validated in order to demonstrate its precision, linearity, limit of detection of each homolog and its instrumental precision.
机译：这项工作描述了使用高效液相色谱（HPLC）测定厌氧反应器废水样品中线性烷基苯磺酸盐（LAS）的方法的开发和验证。所应用的LAS标准是十二烷基苯磺酸钠，它在色谱图中显示四个主要峰，与线性烷基链的不同同源性有关。使用C-18，C-12和C-8作为固定相，紫外和荧光检测器，流动相（MP）组成和洗脱梯度的编程时间测试了不同的色谱条件。使用C-8色谱柱，MP：甲醇和高氯酸钠（0.075 mol L-1）获得最佳色谱条件。通过使用水和合成底物作为溶剂对LAS曲线进行校准来验证此方法。该方法经过验证，以证明其精度，线性，每种同系物的检出限及其仪器精度。

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