title: In situ growth and phenyl functionalization of titania nanoparticles coating for solid-phase microextraction of ultraviolet filters in environmental water samples followed by high performance liquid chromatography-UV detection.
abstract: Based on TiO2-nanoparticles coating fabricated by a one-step anodization method on titanium wire substrate, a novel phenyl functionalized solid-phase microextraction (SPME) fiber coating was prepared by simple and rapid in situ chemical assembling technique between the fiber surface titanol groups and trichlorophenylsilane reaction. The as-fabricated fiber exhibited good extraction capability for some UV filters and was employed to determine the ultraviolet (UV) filters in combination with high performance liquid chromatography-UV detection (HPLC-UV). The main parameters affecting extraction performance were investigated and optimized. Under the optimized conditions, the developed method was applied to detect several UV filters at trace concentration levels with only 8 mL of sample volume. They were determined in the range from 0.005 to 25 μg L(-1) with detection limits (S/N=3) from 0.1 to 50 ng L(-1). The relative standard deviations (RSDs) for single fiber repeatability varied from 4.6 to 6.5% (n=5) and fiber-to-fiber reproducibility (n=5) ranged from 5.5 to 9.1%. The linear ranges spanned two-four magnitudes with correlation coefficients above 0.9990. Five real water samples including four Yellow River water samples and one rain water sample were determined sensitively with good recoveries ranging from 86.2 to 105.5%. The functionalized fiber coating performed good reproducible manner, high mechanical strength, good stability and long service life. Moreover, this study proposed an efficient sample pretreatment method for the determination of UV filters from environmental water samples.
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China; College of Science, Gansu Agriculture University, Lanzhou 730070, PR China.
authors: Li
authors: L
authors: Li
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China.
authors: Ruibin
authors: R
authors: Guo
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China.
authors: Yi
authors: Y
authors: Li
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China.
authors: Mei
authors: M
authors: Guo
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China; Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China.
authors: Xuemei
authors: X
authors: Wang
authors: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China; Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China. Electronic address: xinzhendu@yahoo.com.
authors: Xinzhen
authors: X
authors: Du
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005618:Fresh Water / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D057927:Hydrophobic and Hydrophilic Interactions; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology; D009994:Osmolar Concentration; D011837:Radiation-Protective Agents / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D012821:Silanes / Q000737:chemistry; D052617:Solid Phase Microextraction / Q000379:methods*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D013997:Time Factors; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D011837:Radiation-Protective Agents; D012821:Silanes; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D014025:Titanium
keywords: Anodization; Solid-phase microextraction; TiO(2) nanoparticles; Trichlorophenylsilane; Ultraviolet filters