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FATES-COMARC 1 Riverine transport of polycyclic aromatic hydrocarbons from Kaoping River (Taiwan) to coastal ocean Chon-Lin Lee 1 *, Bing-Sian Lin 1, and James T. Liu 2 1 Department of Marine Environment and Engineering 2 Institute of Marine Geology and Chemistry National Sun Yat-sen University
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FATES-COMARC 2 Introduction What are Polycyclic Aromatic Hydrocarbons (PAHs)? Hydrophobic Organic Compounds (HOC) Persistent Organic Pollutants (POPs)
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FATES-COMARC 3 Naphthalene Acenaphthylene Acenaphthene Fluorene Anthracene Phenanthrene Fluoranthene Pyrene Benzo(a)anthracene Chrysene Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Dibenz(a,h)anthracene Benzo(g,h,i)perylene Indeno(1,2,3-cd)pryene Ring structure of PAHs
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FATES-COMARC 4 Introduction Suspect carcinogens Endocrine disruptors Bioaccumulation Source identification Why PAHs?
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FATES-COMARC 5 Petrogenic sources Oil spill Industrial waste PAHs in environment Pyrogenic sources Industrial emission Vehicles emission Open-burning emission Diagenetic source Diagenesis of biogenic precursors Retene Perylene
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FATES-COMARC 6 Source identification Phenanthrene Fluorene Benzo(g,h,i)perylene Anthracene Acenaphthene Pyrene Benzo(a)pyrene Fluoranthene Chrysene Indeno(1,2,3-cd)pryene Benzo(a)anthracene Alkyl- phenanthrenes CH 3 Naphthalene
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FATES-COMARC 7 PC3 vs PC4 Oil source Gasoline vehicle source Down- canyon heading samples Up-canyon heading sample 0 90 180 270 UpcanyonUpcanyon Down-canyonDown-canyon T4KP M-D Fang, W-K Chang, C-L Lee, James T. Liu, 2009, J. Mar. Syst. (76) 457-467
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FATES-COMARC 8 PCA score plot – PC1 versus PC2 M-D Fang, W-K Chang, C-L Lee, James T. Liu, 2009, J. Mar. Syst. (76) 457-467
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FATES-COMARC 9 Fate of anthropogenic HOCs and fluvial particles? N. Shelf S. Shelf Canyon Outer Shelf
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FATES-COMARC 10 Objectives To estimate the annual fluvial discharges of polycyclic aromatic hydrocarbons and particulate organic carbons from Gaoping River To deploy PAH diagnostic ratios and statistical tools (e.g. principal component analysis) for source recognition
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FATES-COMARC 11 Sampling Map From : To : NOV 06 NOV 07
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FATES-COMARC 12 Methods (1) Soxhlet extraction (2) liquid-liquid extraction (3) rotary evaporation (4) Clean up (5) GC-MS M-D Fang, F-C Ko, J. E. Baker, C-L Lee, 2008, Sci. Total Environ. (407) 548-565
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FATES-COMARC 13 PAH concentrations (ng/L)
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FATES-COMARC 14 Particulate PAHs(ng/L) VS TSP
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FATES-COMARC 15 Particulate PAHs(ng/g) VS POC R=0.584
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FATES-COMARC 16 Source Identification Petrogenic Pyrogenic
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FATES-COMARC 17 Dry season Wet season Sampling Precipitation May 07
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FATES-COMARC 18 PC1 score plot PC1 scores Pyrogenic source Petrogenic source M-D Fang, P-C Hsieh, F-C Ko, J. E. Baker, C-L Lee, 2007, Mar. Pollut. Bull. (54), 1179-1189. & J-J Jiang, C-L Lee, M-D Fang, James T. Liu, Mar. Pollut. Bull. In Press
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FATES-COMARC 19 HCA cluster Canyon and Southern shelf Ⅰ Northern shelf Wet season Canyon and Southern shelf Ⅱ Dry season Straw burning
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FATES-COMARC 20 HCA Compositional pattern Methyl-PAHs S CH 3 S Pyrogenic
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FATES-COMARC 21 PCA Loading S CH 3 S Mixed Sources pyrolysis Petroleum pyrolysis
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FATES-COMARC 22 River Suspended Particles Coastal Surface Sediments Between wet and dry season : Mixed Sources
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FATES-COMARC 23 Petrogenic pyrogenic Pyrogenic Biomass/petroleum combustion Unburned Petroleum Diesel oil
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FATES-COMARC 24 Estimate PAHs Flux Total Flux: 4.3 ton/year Wet season : 99.0% Krosa typhoon: Particulate phase : 12.8% Dissolved phase : 6.7% Typhoon: Aug : Pabuk, Wutip, Sepat Sep : Wipha Oct : Krosa Nov : Mitag Krosa typhoon sampling
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FATES-COMARC 25
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FATES-COMARC 26 Wet seasonDry season Sourcespetrogenicpyrogenic PAH concentration85- 196 ng/L200- 515 ng/L Dissolved phase13- 41 ng/L57- 152 ng/L Particulate phase160- 592 ng/L12- 49 ng/L 397-1144 ng/g790-1797 ng/g Summary
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FATES-COMARC 27 Sediment discharge18.7 MT/year organic carbon discharge95 kT/year PAH fluvial discharge4.3 ton/year Wet seasonDry season Dissolved phase85.4 %14.6 % Particulate phase99.7 %0.3 % Wet seasonDissolved phaseParticulate phase Typhoon48.1 %67.0 % Summary
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FATES-COMARC 28 Acknowledgements National Science Council for funding support Prof. H-L Lin for the precious samples
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FATES-COMARC 29 Thank you and your comments are welcomed
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