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Title: A fluorescence-based method for rapid and direct determination of polybrominated diphenyl ethers in water

A new method was developed for rapid and direct measurement of polybrominated diphenyl ethers (PBDEs) in aqueous samples using fluorescence spectroscopy. The fluorescence spectra of tri- to deca-BDE (BDE 28, 47, 99, 153, 190, and 209) commonly found in environment were measured at variable emission and excitation wavelengths. The results revealed that the PBDEs have distinct fluorescence spectral profiles and peak positions that can be exploited to identify these species and determine their concentrations in aqueous solutions. The detection limits as determined in deionized water spiked with PBDEs are 1.71-5.82 ng/L for BDE 28, BDE 47, BDE 190, and BDE 209 and 45.55–69.95 ng/L for BDE 99 and BDE 153. The effects of environmental variables including pH, humic substance, and groundwater chemical composition on PBDEs measurements were also investigated. These environmental variables affected fluorescence intensity, but their effect can be corrected through linear additivity and separation of spectral signal contribution. Compared with conventional GC-based analytical methods, the fluorescence spectroscopy method is more efficient as it only uses a small amount of samples (2-4 mL), avoids lengthy complicated concentration and extraction steps, and has a low detection limit of a few ng/L.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [2] ;  [2]
  1. China Univ. of Geosciences, Wuhan (China). Lab of Basin and Wetland Eco-Restoration; Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. China Univ. of Geosciences, Wuhan (China). Lab of Basin and Wetland Eco-Restoration and State Key Lab. of Biogeology and Environmental Geology
Publication Date:
OSTI Identifier:
1184954
Report Number(s):
PNNL-SA--99694
Journal ID: ISSN 2090-8865; KP1603000
Grant/Contract Number:
AC05-76RL01830; 41372252
Type:
Accepted Manuscript
Journal Name:
Journal of Analytical Methods in Chemistry
Additional Journal Information:
Journal Volume: 2015; Journal ID: ISSN 2090-8865
Publisher:
Hindawi
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY brominated organic contaminant; fluorescence method