title: Rapid screening method for simultaneous determination of four polycyclic aromatic hydrocarbons in water samples by derivative non-linear variable-angle synchronous fluorescence spectrometry.
abstract: Derivative non-linear variable-angle synchronous fluorescence spectroscopy (D-NLVASFS) has been developed to improve the selectivity of the fluorescence measurement without loss of sensitivity. We report a simple screening approach for the rapid and simultaneous determination of 1,2.5,6-dibenzoanthracene (DBA), 2,3-benzofluorene (BF), pyrene (Pyr) and 3,4-benzopyrene (BaP) in a mixture by using first-derivative NLVASFS. The method is efficient, fast and straightforward, and the measurement was simply based on a single spectrum via a single spectral scanning of a sample. The linear ranges 0.005-0.30, 0.02-0.30, 0.02-0.40 and 0.005-1.0 microg/mL and the detection limits 0.08, 1.14, 1.64 and 0.12 ng/mL are obtained for DBA, BF, Pyr and BaP, respectively. The method was applied to water samples spiked with the four polycyclic aromatic hydrocarbons (PAHs), with mean recoveries of 103.0% (SD 5.9%) for DBA, 96.4% (SD 4.2%) for BF, 96.2% (SD 4.0%) for Pyr and 98.2% (SD 3.0%) for BaP.
authors.affiliation: Department of Chemistry and Key Laboratory of Analytical Sciences of MOE, Xiamen University, Xiamen 361005, People's Republic of China.
authors.forename: Dan-Li
authors.initials: DL
authors.lastname: Lin
authors.forename: Zhe-Xiang
authors.initials: ZX
authors.lastname: Zou
authors.forename: Li-Fang
authors.initials: LF
authors.lastname: He
authors.forename: Yao-Qun
authors.initials: YQ
authors.lastname: Li
mesh_terms: D017711:Nonlinear Dynamics; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis* / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence; D013997:Time Factors; D014867:Water / Q000737:chemistry*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014867:Water