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    固相萃取-高效液相色谱法同时测定环境水体中微量药品和个人护理用品

    Simultaneous Determination of 10 Pharmaceuticals and Personal Care Products in Environmental Waters by SPE-HPLC

    • 摘要: 结合固相萃取与高效液相色谱分析技术,建立了一种可以同时检测环境水体中10种微量药品和个人护理用品(PPCPs)的分析方法。将水样pH调节至5,过Poly-Sery HLB固相萃取小柱,用6 mL的甲醇洗脱。洗脱液在Agilent Eclipse XDB-C18色谱柱上分离,以水-乙腈为流动相进行梯度洗脱,检测波长为224 nm。10种目标化合物的质量浓度在0.5~20 mg·L-1范围内与其峰面积呈线性关系,方法的检出限(3S/N)为6.0~54.6 μg·L-1,测定下限(10S/N)为20.1~182.1 μg·L-1。对自来水和地表水进行加标试验,回收率分别在71.2%~108%和56.7%~97.6%之间。方法用于某城镇污水处理厂的原水和最终处理出水的检测。

       

      Abstract: A method of solid-phase extraction (SPE) combined with high-performance liquid chromatography (HPLC) was developed for simultaneous determination of 10 pharmaceuticals and personal care products (PPCPs) in environmental waters. The water samples with pH of 5 were purified by SPE on Poly-Sery HLB column and eluted with 6 mL of methanol. The elution was separated using Agilent Eclipse XDB-C18 as stationary phase and a mixture of water and acetonitrile as mobile phase for gradient elution. UV-detection at 224 nm was recorded. The linear relationship between the peak area and the mass concentration of 10 PPCPs were in the range of 0.5-20 mg·L-1, with detection limits in the range of 6.0-54.6 μg·L-1 and lower limits of determination (10S/N) in the range of 20.1-182.1 μg·L-1. Tests for recovery were made by adding standard samples to running water and surface water, giving values of recovery of 71.2%-108% and 56.7%-97.6%, respectively. The method was applied to assess the raw water and treated water of a sewage treatment plant.

       

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