Presentation is loading. Please wait.

Presentation is loading. Please wait.

Correlated: R 2 = 0.90 un-correlated Correlated: R 2 = 0.96 Correlated: R 2 = 0.70 Evidence for Gas-Phase Driven Phytoplankton accumulation of PCBs.

Similar presentations


Presentation on theme: "Correlated: R 2 = 0.90 un-correlated Correlated: R 2 = 0.96 Correlated: R 2 = 0.70 Evidence for Gas-Phase Driven Phytoplankton accumulation of PCBs."— Presentation transcript:

1

2 Correlated: R 2 = 0.90 un-correlated Correlated: R 2 = 0.96 Correlated: R 2 = 0.70 Evidence for Gas-Phase Driven Phytoplankton accumulation of PCBs

3 Air-Water-Phytoplankton Exchange of POPs Air-water exchange Water-phytoplankton exchange CACA MLD CWCW CPCP F WP F AW -J. Dachs, S.J. Eisenreich, J.E. Baker, F.C. Ko, J.D. Jeremiason. Environ. Sci. Technol. 33, , Vertical Flux F Sink

4 Air-Water Exchange Controls Aquatic Concentrations of POPs (Experimental Lakes Area) Phytoplankton concentrations of PCB 52

5 Proceso de destilación global

6 Global Atmospheric Depositional Processes 90N 60N 30N 0 30S 60S 90S 180W 90W 0 90E 180E T (K) Temperature Henry’s Law Constant PCB 52 Air-Water Exchange Latitude

7 ¿Qué explica la distribución global de los contaminantes Orgánicos? TemperaturaProductividad primaria (NASA Goddard Space Flight Center;

8 90N 60N 30N 0 30S 60S 90S 90N 60N 30N 0 30S 60S 90S 180W 90W 0 90E 180E T (K) U10 ( m s -1 ) Temperature Wind Speed Remote Sensing Measurements October-December 1998

9 180W 90W 0 90E 180E 90N 60N 30N 0 30S 60S 90S k AW (m d -1 ) Global Variability of k AW PCB 52 Air-Water Exchange Air-Water Fluxes

10 Air-Water-Phytoplankton Exchange of POPs Air-water exchange Water-phytoplankton exchange CACA MLD CWCW CPCP F WP F AW -J. Dachs, S.J. Eisenreich, J.E. Baker, F.C. Ko, J.D. Jeremiason. Environ. Sci. Technol. 33, , k WP = Biomass k u MLD Vertical Flux F Sink

11 90N 60N 30N 0 30S 60S 90S 180W 90W 0 90E 180E MLD (m) Mixed Layer Depth 90N 60N 30N 0 30S 60S 90S 180W 90W 0 90E 180E Chlorophyll ( mg m -3 ) Chlorophyll Remote Sensing Measurements Water-Phytoplankton Fluxes

12 180W 90W 0 90E 180E 90N 60N 30N 0 30S 60S 90S k WP (m d -1 ) Global Variability of k WP PCB 52 Water-Phytoplankton Exchange Water-Phytoplankton Fluxes

13 Air-Water-Phytoplankton Exchange of POPs Air-water exchange Water-phytoplankton exchange MLD -J. Dachs, S.J. Eisenreich, J.E. Baker, F.C. Ko, J.D. Jeremiason. Environ. Sci. Technol. 33, , k WP = Biomass k u MLD Vertical Flux CACA CWCW CPCP F WP F AW F Sink

14 (Lohmann, R., Ockenden, W.A., Shears, J., Jones, K.C. Environ. Sci. Technol. 2001) Atmospheric Concentrations of PCBs, Dioxins and Furans Atlantic Ocean Transect (52N-74S) PCB 52PCB 180Cl 4 DD North South Latitude

15 180W 90W 0 90E 180E 90N 60N 30N 0 30S 60S 90S ng m -2 d -1 Predicted Air-Water and Sinking Fluxes of PCBs, Dioxins and Furans PCB 52 Measured by Gustafsson, Gschwend and Buesseler, Environ. Sci. Technol. 31, , 1997

16 PCB52 PCB180 PCB52 Latitudinal Variability of Air to Water Fugacity Ratios Atlantic Ocean k AW k Sink

17  Benzofluoranthene Flux ng m -2 d -1 mg m -2 d -1 Mass Flux ng m -2 d -1 Biogeochemical Coupling of Atmospheric Deposition and Settling Fluxes Settling Flux Atmospheric Dep. Atm. Dep. Sed. Traps L. Méjanelle, UPMC

18 PBDE and PAH atmospheric deposition pg m -2 d -1 ng m -2 d Atmospheric Deposition of Polybrominated Biphenyl Ethers and Polycyclic Aromatic Hydrocabons L. Méjanelle, UPMC

19 Persistent Organic Pollutants (POPs) Lohmann, R., K. Breivik, J. Dachs, D. Muir. Environ. Poll Legacy POPsEmerging POPs

20 T12 R14 R17 T16 T15 T9 R1 T3 R18 T8 R4 R6 T7 T13 T11 T10 T5 T2 TORTOSA LLEIDA ZARAGOZA HUESCA MONZÓN SABIÑÁNIGO PAMPLONA LOGROÑO VITORIA TUDELA T12 R14 R17 T16 T15 T9 R1 T3 R18 T8 R4 R6 T7 T13 T11 T10 T5 T2 TORTOSA LLEIDA ZARAGOZA HUESCA MONZÓN SABIÑÁNIGO PAMPLONA LOGROÑO VITORIA TUDELA T12 R14 R17 T16 T15 T9 R1 T3 R18 T8 R4 R6 T7 T13 T11 T10 T5 T2 TORTOSA LLEIDA ZARAGOZA HUESCA MONZÓN SABIÑÁNIGO PAMPLONA LOGROÑO VITORIA TUDELA Emerging (non-regulated) POPs: Pharmaceuticals in the Ebro River Barceló et al. Personal comunication

21 Perfluoroalkyl substances are globally distributed, anthropogenic contaminants. Perfluoroalkyl acids (PFAs) are synthetic, perfluorinated, straight- or branched- chain organic acids characterized by a carboxylate or sulfonate moiety. Surface treatment applications to provide soil, oil and water resistance to personal apparel and home furnishings (e.g. carpet cleaner and Goretex®). on paper products to provide grease, water, and oil resistance to plates, food containers, bags, and wrap (Teflon ®) aqueous film-forming foams (AFFF) for fire-fighting,

22

23 Air (aerosol + gas phase) Water (particulate + dissolved phase) Simultaneous samples Plankton Mediterranean sampling cruises (June 2006, May 2007) POPs in the Mediterranean Sea

24 PAHs PCBs GAS PHASE IN AIR (ng/m3) DISSOLVED PHASE IN SURFACE WATER (pg/L) PLANKTON (ng/g) DISSOLVED PHASE IN SURFACE WATER (pg/L) PARTICULATED PHASE IN SURFACE WATER (pg/L) PLANKTON (ng/g) PARTICULATE PHASE IN AIR (ng/m3)

25 PAH accumulation in plankton depends on planktonic biomass (Berrojalbiz et al. 2010)

26 Trophic controls on PAH accumulation in plankton (Berrojalbiz et al. 2010)

27 Trophic controls on PAH accumulation in plankton (Berrojalbiz et al. 2010) Is it due to PAH metabolization?

28 Trophic controls on POP accumulation in plankton (Berrojalbiz et al. 2010)

29 Trophic controls on PCB accumulation in plankton (Berrojalbiz et al. 2010)

30 Trophic controls on POP accumulation in plankton (Berrojalbiz et al. 2010)

31 Trophic controls on HCHs and HCB accumulation in plankton (Berrojalbiz et al. 2010)

32 Trophic controls on POP accumulation in plankton (Berrojalbiz et al. 2010)

33 CGCG CWCW CPCP CACA Air-Water Exchange Water-Particle Partitioning Gas-Particle Partitioning Dry Deposition Wet Deposition Vertical Fluxes Advection Bioaccumulation Continental Inputs Atmospheric Transport Degradation Environmental fate of organic pollutants Major Permanent sinks: - Ocean interior (sediments, deep waters) - Atmospheric OH degradation

34 Selective Sequestration of Atmospheric POPs in Sediments from High Mountain Lakes (Grimalt et al. Environ. Sci. Technol. 2001) Inventories in sediments vs. Temperature

35 (Meijer, S. et al. Environ. Pollut. 2006, Meijer et al. Environ Pollut.2009) Selective Sequestration of Atmospheric POPs in Sediments from a modeled Lake (Lake Redó, Pyrenees Mountains)

36 Controls on the Sequestration of atmospheric POPs in Sediments from High Mountain Lakes (Lake Redo, Pyrenees Mountains) (Meijer, S. et al. Environ. Pollut ) k’ W-Sed /k’ W-Air = 2.5 Fluxes in mg y -1 k’ W-Sed /k’ W-Air = 0.5


Download ppt "Correlated: R 2 = 0.90 un-correlated Correlated: R 2 = 0.96 Correlated: R 2 = 0.70 Evidence for Gas-Phase Driven Phytoplankton accumulation of PCBs."

Similar presentations


Ads by Google