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Preparation of naphthyl functionalized magnetic nanoparticles for extraction of polycyclic aromatic hydrocarbons from river waters

机译：萘基官能化磁性纳米粒子从河水中萃取多环芳烃的制备

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摘要

A novel core-shell structured magnetic sorbent, naphthyl functionalized magnetic nanoparticles (Fe3O4@SiO2@Nap), was prepared and successfully applied for the magnetic solid-phase extraction (MSPE) of polycyclic aromatic hydrocarbons (PAHs) from river water samples. The analytes were finally determined by high performance liquid chromatography coupled with fluorescence detection (HPLC-FLD). Seven kinds of PAHs were selected as the model analytes, including fluorene (Flu), fluoranthene (Fla), anthracene (Ant), pyrene (Pyr), benz[a] anthracene (BaA), benzo[b] fluoranthene (BbF) and benzo[k] fluoranthene (BkF). Transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), Fourier transform infrared spectrometry (FTIR) and X-ray photoelectron spectroscopy (XPS) were used to characterize the sorbent. The main influencing parameters including sorbent amount, desorption solvent, sample volume and extraction time were optimized to achieve the highest recovery rate. Under the optimal conditions, only 40 mg of the Fe3O4@SiO2@Nap sorbent was used to extract the PAHs. The linear ranges of all the seven PAHs were 0.5-100 ng L-1 with the limits of detection (S/N - 3) ranging from 0.04 to 0.12 ng L-1. The repeatability was investigated by evaluating the intra-and inter-day precisions with relative standard deviations (RSDs) lower than 4.3%. Finally, the proposed method was successfully applied for the determination of PAHs in river water samples with recoveries in the range of 89.6-106.8%.
机译：制备新型核 - 壳结构磁性吸附剂，萘基官能化磁性纳米颗粒（Fe3O4 @ SiO 2 @ NAP），并成功地从河水样品中施加磁环芳烃（PAH）的磁性固相萃取（MSPE）。最终通过与荧光检测（HPLC-FLD）偶联的高效液相色谱法测定分析物。选择七种PAHS作为模型分析物，包括芴（流感），氟（FLA），蒽（蚂蚁），芘（Pyre），苯并[a]蒽（Baa），苯并[b]氟蒽（Bbf）和苯并[k]氟蒽（BKF）。使用透射电子显微镜（TEM），振动样品仪（VSM），傅里叶变换红外光谱（FTIR）和X射线光电子能谱（XPS）来表征吸附剂。优化包括吸附剂量，解吸溶剂，样品体积和提取时间的主要影响参数，以达到最高的恢复速率。在最佳条件下，仅使用40毫克Fe3O4 @ SiO 2 @ leap吸附剂来提取PAH。所有七个PAH的线性范围为0.5-100ng L-1，检测限范率为0.04至0.12ng L-1。通过评估具有低于4.3％的相对标准偏差（RSD）的内部诊断和日间诊断来研究可重复性。最后，拟议的方法成功地应用于河水样品中的PAHS，其回收率在89.6-106.8％的范围内。

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  • 来源
    《RSC Advances》 |2015年第69期|共9页
  • 作者

    Cai Ying; Yan Zhi-Hong; Wang Ni-Ya; Cai Qing-Yun; Yao Shou-Zhuo;

  • 作者单位

    Hunan Univ Coll Chem &

    Chem Engn State Key Lab Chemo Biosensing &

    Chemometr Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Chem &

    Chem Engn State Key Lab Chemo Biosensing &

    Chemometr Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Chem &

    Chem Engn State Key Lab Chemo Biosensing &

    Chemometr Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Chem &

    Chem Engn State Key Lab Chemo Biosensing &

    Chemometr Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Chem &

    Chem Engn State Key Lab Chemo Biosensing &

    Chemometr Changsha 410082 Hunan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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