Determination of 1-naphthol and 2-naphthol from environmental waters by magnetic solid phase extraction with Fe@MgAl-layered double hydroxides nanoparticles as the adsorbents prior to high performance liquid chromatography

作者：Zhou, Qingxiang^*; Lei, Man; Li, Jing; Zhao, Kuifu; Liu, Yongli

来源：Journal of Chromatography A, 2016, 1441: 1-7.

DOI：10.1016/j.chroma.2016.02.061

• 1-Naphthol
• 2-Naphthol
• Layered double hydroxides
• Magnetic solid phase extraction
• HPLC-UV

Magnetic Fe@MgAI-layered double hydroxides (MgAI-LDHs) composite was firstly synthesized by coating MgAl-layered double hydroxides on the surface of the dispersed nanoscale zero valent irons with co-precipitation method and characterized by transmission electron microscopy and X-ray diffraction techniques. The synthesized Fe@MgAl-LDHs nanoparticles were investigated for magnetic solid phase extraction (MSPE) of 1-naphthol and 2-naphthol from the water samples. The elutent containing 1-naphthol and 2-naphthol was analyzed by high performance liquid chromatography with variable wavelength detection (HPLC-UV). Under optimal conditions, there is good linear relationship between the concentration and the peak area in the range of 0.5-200 mu g L-1 with the correlation coefficients (r(2)) above 0.998 for 1-naphthol and 2-naphthol. The limits of detection were 0.22 mu g L-1 and 0.19 mu g L-1 for 1-naphthol and 2-naphthol, respectively, and precisions were both below 2.5% (n =6). The real water analysis demonstrated that the spiked recoveries were in the range of 79.2-80.9% (n=3). All these results indicated that the developed MSPE-HPLC-UV method was proved to be an efficient tool for the analysis of naphthols.

• 出版日期2016-4-8
• 单位中国石油大学（北京）