Abstract Carbon-coated magnetic nanoparticles were modified with cationic surfactant and used for the dispersive solid phase extraction of chlorophenols from aqueous samples. Surfactant adsorbed on the surface of the nanoparticles resulted in mixed hemimicelles for high extraction efficiency of chlorophenols. Under optimized conditions, calibration curves were linear from 0.5–20 mg L−1 for analytes with limit of detection between 0.2 and 0.4 mg L−1. The method was applied to extraction of chlorophenols from tap water, well water and industrial effluent. Recoveries were in the range of 94.0–99.4%, suggesting that sample matrix had little effect on the yields of extraction.

中文翻译：

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使用碳包覆磁性纳米粒子分散固相萃取氯酚

摘要 用阳离子表面活性剂修饰碳包覆磁性纳米粒子，用于水样中氯酚的分散固相萃取。吸附在纳米颗粒表面的表面活性剂导致混合半胶束，从而提高氯酚的提取效率。在优化条件下，对于检测限在 0.2 和 0.4 mg L-1 之间的分析物，校准曲线在 0.5-20 mg L-1 范围内呈线性。该方法适用于从自来水、井水和工业废水中提取氯酚。回收率在 94.0-99.4% 的范围内，表明样品基质对萃取率的影响很小。