title: 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.
abstract: Magnetic Fe@MgAl-layered double hydroxides (MgAl-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 μgL(-1) with the correlation coefficients (r(2)) above 0.998 for 1-naphthol and 2-naphthol. The limits of detection were 0.22 μgL(-1) and 0.19 μgL(-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.
authors.affiliation: College of Geosciences, China University of Petroleum Beijing, Beijing 102249, China. Electronic address: zhouqx@cup.edu.cn.
authors.forename: Qingxiang
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: College of Geosciences, China University of Petroleum Beijing, Beijing 102249, China.
authors.forename: Man
authors.initials: M
authors.lastname: Lei
authors.affiliation: College of Geosciences, China University of Petroleum Beijing, Beijing 102249, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: College of Geosciences, China University of Petroleum Beijing, Beijing 102249, China.
authors.forename: Kuifu
authors.initials: K
authors.lastname: Zhao
authors.affiliation: College of Geosciences, China University of Petroleum Beijing, Beijing 102249, China.
authors.forename: Yongli
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000535:Aluminum; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D005618:Fresh Water / Q000737:chemistry; D006878:Hydroxides; D007501:Iron; D008274:Magnesium; D059346:Magnets; D053768:Metal Nanoparticles; D046529:Microscopy, Electron, Transmission; D009284:Naphthols / Q000032:analysis*; D052616:Solid Phase Extraction / Q000379:methods; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D000535:Aluminum; D006878:Hydroxides; D007501:Iron; D008274:Magnesium; D009284:Naphthols; D062065:Wastewater; D014874:Water Pollutants, Chemical; C029350:1-naphthol; C028405:2-naphthol
keywords: 1-Naphthol; 2-Naphthol; HPLC–UV; Layered double hydroxides; Magnetic solid phase extraction