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首页> 外文期刊>Electroanalysis >Effect of surfactants and related biological active substances on the O-2/H2O2 voltammetry and its utilization for determination of the total surfactant content
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Effect of surfactants and related biological active substances on the O-2/H2O2 voltammetry and its utilization for determination of the total surfactant content

机译：表面活性剂和相关生物活性物质对O-2 / H2O2伏安法的影响及其在测定表面活性剂总含量中的用途

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The effect of surfactants on the second voltammetric reduction peak of air oxygen dissolved in aqueous electrolyte solutions is described. Sodium dodecylbenzenesulfonate (DBSNa) was used as a model surfactant in the concentration range 9 x 10(-8)-9 x 10(-7) molL(-1). With increasing DBSNa concentration the second oxygen reduction peak increases and shifts to negative potentials. Measurements were carried out in pure 0.1 mol L-1 KCl as well as in freshly collected samples of seawater. By means of calibration plots obtained with DBSNa we could determine the total surfactant concentration in seawater, i.e., the voltammetric surfactant background signal. Expressed in equivalent concentration of DBSNa this background amounted to 3 x 10(-7) mol L-1. [References: 10]
机译：描述了表面活性剂对溶解在电解质水溶液中的空气氧的第二伏安还原峰的影响。十二烷基苯磺酸钠（DBSNa）被用作模型表面活性剂，浓度范围为9 x 10（-8）-9 x 10（-7）molL（-1）。随着DBSNa浓度的增加，第二个氧还原峰增加并移至负电位。在纯0.1 mol L-1 KCl以及新鲜收集的海水样品中进行测量。通过使用DBSNa获得的校准图，我们可以确定海水中表面活性剂的总浓度，即伏安法表面活性剂的背景信号。以DBSNa的当量浓度表示，该背景总计为3 x 10（-7）mol L-1。 [参考：10]

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