Direct determination of benzo a pyrene in water samples by a gold nanoparticle-based solid phase extraction method and laser-excited time-resolved Shpol'skii spectrometry
Abbreviated Journal Title
Polycyclic aromatic hydrocarbons; Solid phase extraction; Gold; nanoparticle; Shpol skii spectroscopy; POLYCYCLIC AROMATIC-HYDROCARBONS; MULTIDIMENSIONAL FLUORESCENCE; SPECTROSCOPY; LIQUID-CHROMATOGRAPHY; DRINKING-WATER; DIBENZOPYRENE; ISOMERS; FIBEROPTIC PROBE; HPLC FRACTIONS; ICCD CAMERA; MATRICES; TEMPERATURE; Chemistry, Analytical
The strong affinity between polycyclic aromatic hydrocarbons (PAH) and the surface of gold colloid, is investigated to device an extraction method for water samples Within the 20-100 nm particle diameter range the 20 nm gold nanoparticles showed the best extraction efficiencies for all the studied analytes The new approach is combined to laser-excited time-resolved Shpol skii spectrometry for the direct analysis of benzo[a]pyrene in drinking water samples For a 500 la sample volume the analytical figure, of merit demonstrate precise and accurate analysis at the parts-per-trillion level The extraction efficii noes are statistically equivalent to 100% with relative standard deviations lower than 2% The average recoveries were varied from 87 5% to 965% for different concentration of analytes The simplicity of I he experimental procedure the low analysis cost and the excellent analytical figures of merit demonstrate the potential of this approach for routine analysis of drinking water samples (C) 2010 Elsevier B V All rights reserved
"Direct determination of benzo a pyrene in water samples by a gold nanoparticle-based solid phase extraction method and laser-excited time-resolved Shpol'skii spectrometry" (2010). Faculty Bibliography 2010s. 918.