Groupe de chimie organique

Chimie marine à l'Institut d'Oceanographie de Bedford

La Loi sur les océans donne au Ministère des Pêches et Océans la responsabilité de comprendre et de gérer les impactes de la pollution chimique sur l'environnement marin et ses ressources de pêhes. Des connaissances sont necessaires pour gérer la zone cotière de façon intégrée et pour établir et faire respecter la santé marine de l'écosystème et les principes de la qualité de l'environnement. Ces connaissances chimiques sont aussi critiques envers les efforts pour la protection de l'habitat, pour gérer les dispositions de la Loi sur les océans sur le principe de "sans pertes nettes" et pour déveloper une industrie d'aquaculture marine soutenue et prospère. Pour protéger l'environnement pour les générations futures, il faut faire attention à la chimie des contaminants.

Les enquêtes chimiques faites par notre groupe addressent des questions telles: Quelle quantité de produit chimiques est présente? D'ou viennent-ils? Ou vont-ils se distribuer? Comment sont-ils transportés? Combien de temps ont ils été presents? Comment réagissent-ils? Quels effets biologiques ont-ils? Comment ces concentrations se comparent-elles à d'autres endroits? Espèces? Années? Le but de nos recherches sur les contaminants est d'évaluer la qualité présente de l'environnement et celle du passé, de prédire les changements futurs basés sur les taux de contamination présents, d'identifier des effets biologiques et des mesures remèdes possibles.

Description de groupe

Dr. Jocelyne Hellou a fait son BSc à l'Université de Montréal, puis sa maîtrise et son doctorat en Océanographie et Chimie, à l'université de Colombie Britanique, dans le domaine des produits naturels marins. Elle travaille au MPO depuis 1986 sur les contaminants. Elle a commencé à travailler à Terre-Neuve dans la division des sciences de l'environnement, section toxicologie et depuis 1997 elle se trouve en Nouvelle Ecosse dans la division des sciences de l'environnement marin. Elle dirige le groupe organique interessé à étudier les polluants reconnus comme prioritaires et ceux un peu moins connus, mais présents dans différents compartiments marins, soit animés ou inanimés. Elle est professeur adjointe aux départements d'Océanographie et de Chimie à l"université Dalhousie. L'équipe conduit des enquêtes de laboratoire et sur le terrain, pour determiner la présence de contaminants dans les sédiments ou animaux, la disponibilité des contaminants à différentes espèces, en termes de dose et de temps, leur réactivité dans les animaux ou la dégradation dans les sédiments, et la correlation entre sorts et effets biologiques. Notre expertise couvre les produits tels les HAPs, les BPCs, DDTs, alkanes, terpènes, hopanes, et composés aromatiques avec azote, soufre, ou oxygène. Les animaux étudiés sur le terrain ou au laboratoire, inclus les phoques, plusieurs espèces de poissons, tel la morue, le flétan, la truite, le harreng, tout aussi bien que les crabes, crevettes, pétoncles, palourdes, moules, buccins et amphipodes.

Contactez-nous

Le groupe de chimie organique de la division des sciences de l'environnement marin se trouve a l'institut d'oceanographie de Bedford à Dartmouth, Nouvelle Ecosse. Questions et commentaires peuvent être addressés au personnel ci-bas.

Questions scientifiques

Dr. Jocelyne Hellou
Chercheur scientifique
Division des sciences de l'environnement marin
l'Institut d'Oceanographie de Bedford
1 Challenger Drive
Dartmouth, Nouvelle-Ecosse
B2Y 4A2
Canada
Tel: (902) 426-7451
Fax: (902) 426-6695

Publications

Dans la liste qui suit, les collaborateurs à l'exterieur de la division des sciences de l'environnement marin et les étudiants sont en italique.

Publications depuis 1995

Hellou, J, Beach, DG, Leonard, J, Banoub JH. 2012. Integrating field assessments with laboratory exposures to assess ecosystem health. Polycyclic Aromatic Hydrocarbons. In Press

Hellou J, Ross N W, Moon T W. 2012. Glutathione, glutathione-S-transferase and glutathione conjugates, complementary markers of oxidative stress in aquatic biota. Environmental Science and Pollution Research. In Press.

Beach, G.B. and Hellou, J. 2011. Bioaccumulation and Biotransformation of 1-Hydroxypyrene by the Marine Whelk Neptunea lyrata. Int. J. Environ. Anal. Chem. 91:1227-1243

Hellou, J. and Gagne, F. 2011. Integrated impact assessment of mussels health. Chapter of an electronic book entitled "Mussels: Anatomy, Habitat and Environmental Impact", Frank Columbus, Editor, Nova Science Publishers. ISBN 978-1-61761-763-8, Lauren E McGevin Editor, Nova Publishers.

Hellou, J. 2011. Behavioural ecotoxicology, an "early warning" signal to assess environmental quality. Environ. Sci. Poll. Res. 18: 1-11.

Hellou J, Beach DG, Erskine S, Marklevitz SA, Saunders L. 2010. Balanced fates of pyrene and 1-hydroxypyrene in snails, Ilyanassa obsoleta, exposed to spiked sediments. Int. J Polycyclic Arom Compounds. 30:75-90.

Erskine, S., Beach, D. G., Rouleau, C., Hellou J. 2010. Fate and distribution of pyrene in Ilyanassa obsoleta exposed through the diet. Inv Surv J. 7:67-78.

Beach, D.G., Quilliam, M.A., Rouleau, C., Croll, R.P. and Hellou, J. 2010. Bioaccumulation and Biotransformation of Pyrene and 1-Hydroxypyrene by the Marine Whelk Buccinum undatum. Environ. Toxicol. Chem. 29: 779-788.

Hellou, J. 2009. Gulf of Maine ESIP website, November 2009. Chemistry and behavior: a balancing act. www.gulfofmaine.org/esip

Beach, D.G., Quilliam, M. A. and Hellou, J. 2009. Analysis of pyrene metabolites in marine snails by liquid chromatography using fluorescence and mass spectrometry detection. J. Chromatog. B 877: 2142-2152.

Saravanabhavan, G., Helleur, R. and Hellou, J. 2009. GCœMS/MS measurement of natural and synthetic estrogens in receiving waters and mussels close to a raw sewage ocean outfall. Chemosphere 76:1156-62

Robinson, B. and Hellou, J. 2009. Biodegradation of Endocrine Disrupting Compounds in Harbour Seawater and Sediments. Sci. Tot. Environ. 407: 5713-5718.

Hellou, J., Cook, A., Lalonde, B., Walker, P., Dunphy K. and MacLeod, S. 2009. Escape and survival of Corophium volutator and Ilyanassa obsoleta exposed to freshwater and chlorotalonyl. J. Environ. Sci. Health. 44:778-790.

Hellou, J., Johnston, D., Cheeseman, K., Gronlund , A., Desnoyers, E., Leonard, J., Robertson. S. 2009. Variables affecting the bioavailability and bioaccumulation of PAH in amphipods. Int. Soc. Pol Arom Compds. 29:12-27.

Paetzold, S.C., Ross, N.W., Richards, R.C., Jones, M., Hellou, J. and Bard.S.M. 2009. Up-regulation of hepatic ABCC2, ABCG2, CYP1A1 and GST in multixenobiotic-resistant killifish (Fundulus heteroclitus) from the Sydney Tar Ponds, Nova Scotia, Canada. Marine Environmental Research 68: 37-47.

Robinson, B.J., Hui, J.P.M., Soo, E.C., Hellou, J. 2009. Estrogenic compounds in seawater and sediments from Halifax Harbour, Nova Scotia, Canada. Environ. Toxicol. Chem. 28:18-25.

Croll, R.P. Currie, S. and Hellou, J. 2008.. Back to Basics in Aquatic Toxicology. Integrated Environmental Assessment and Management. 4: 520-521.

Hellou, J., Leonard, J., Cook,A., Doe, K. Dunphy, K., Jackman, P., Tremblay, L., Mills Flemming, J. 2009. Comparison of the Partitioning of Pesticides relative to the survival and behaviour of exposed amphipods. Ecotoxicology. 18:27-33.

Marklevitz, S. A. C., Almeida, E. Flemming, J. and Hellou, J. 2008. Determinig the quality of sediments and assessing the bioavaility of contaminants. Part 2. Behavioural response of Ilyanassa obsoleta towards contaminated harbour sediments. J. Soils and Sediments. 8: 92-97.

Marklevitz, S. A. C., Almeida, E., Flemming, J. and Hellou, J. 2008. Determinig the quality of sediments and assessing the bioavaility of contaminants. Part 1. Variables affecting the behavioural response of Ilyanassa obsoleta towards contaminated harbour sediments. J. Soils and Sediments. 8: 86-91.

Gagne,F., Burgeot, T.; Hellou, J.; St-Jean, S.;Farcy, E.; Blaise, C. 2008. Spatial variations in biomarkers of Mytilus edulis mussels at four polluted regions spanning the Northern Hemisphere. Env. Res. 107: 201-217.

Yeats, P., Gagne, F and Hellou, J. 2008. Body Burden of Contaminants and Biological Effects in Mussels: An Integrated Approach. Env. Int. 34:254-264.

Hellou, J., Cheeseman, K., Desnoyers, E., Johnston, D., Jouvenelle, ML, Leonard, J., Robertson S and Walker, P. 2008. A non-lethal chemically based approach to investigate the quality of harbour sediments. Sci. Tot. Env. 389: 178-187.

Hellou, J., Fermaut, M., Leonard, J, Li, W. 2006. Defining the bioaccumulation of PAC in mussels: considering time, distance and effects. Int. J. Polycyclic Aromatic Compounds 26:1-7.

Hellou, J., Collier, T. and Ariese, F. 2005. Monitoring for PAH exposure in finfish: concentrations in tissues and biotransformation. Mar. Poll. Bull. 52: 433-441.

Hellou, J., Cheeseman, K., Jouvenelle, MJ and Sarah Robertson. 2005. Behavioural response of Corophium volutator relative to experimental conditions, physical and chemical disturbances. Environ. Toxicol. Chem. 24: 3061-3068.

Hellou, J., Steller, S., Burridge, L. and Haya, K. 2005. Presence and distribution of PAH, PCB and DDE in feed and sediments under salmon aquaculture cages in the Bay of Fundy, New Brunswick, Canada. Aquatic Conservation: Marine and Freshwater ecosystems. 15: 349-365.

Gagne, F., Blaise, C., Hellou, J. 2004. Endocrine disruption and health effects of caged mussels, Eliptio complanata, placed downstream from a primar-treated municipal effluent plume for 1 year. Comp. Biochem. Physiol. 138C: 33-44.

Hellou J. and Leonard, J. 2004. PAH bioaccumulation and biotransformation products in trout exposed through food pellets. Int. J. Polycyclic Aromatic Compounds. 24: 697-712.

Hellou, J., Steller, S, Langille, M., Leonard, J., and Tremblay, D. 2004. Partitioning of polycyclic aromatic hydrocarbons between water and particles and bioaccumulation in mussels: a harbour case. Mar. Environ. Res. 59: 101-117.

Hellou, J, Yeats, P., Steller, S. and Gagne, F. 2003. Chemical contaminants and biological indicators of mussel health during gametogenesis. Environ. Toxicol. Chem. 22: 2080-2087.

Stark, A., Abrajano, T. Jr, Hellou, J. and Smith, J. 2003. Molecular and Isotopic characterization of polycyclic aromatic hydrocarbons: distribution and source at the international segment of the St. Lawrence river. Org. Geochem. 34: 225-234.

Hellou J and Law, RJ. 2003. Stress response of wild mussels, Mytilus edulis and Mytilus trossulus as an indicator of ecosystem health. Env. Poll. 126: 407-416.

Ricking, M., Schwarzbauer, J. Hellou, J., Svenson, A., Zitko V. 2003. Polycyclic aromatic musk compounds in waste water treatment plant effluents of Canda and Sweden - first results. Mar. Poll. Bull. 46: 410-417.

Hellou, J., Steller, S., Leonard, J. and Albaiges, J. 2002. Alkanes, terpanes and aromatic hydrocarbons in surficial sediments of Halifax Harbour. Int. J. of Polycyclic Aromatic Compounds. 22: 631-642.

King, T.L., Yeats, P., Hellou, J. and Niven, S. 2002. Tracing the source of 3,3'-dichlorobiphenyl found in samples collected in and around Halifax harbour. Mar. Poll. Bull. 44: 590-596.

Hellou, J., King, T.L., Steller, S. and Yeats, P. 2002. Trends in the distribution of PCBs compared to PACs in sediments and mussels of Halifax Harbour. Wat. Qual. Res. J. Canada. 37: 413-428.

Hellou, Leonard and Antsey. 2002. Dietary exposure of finfish to aromatic contaminants and tissue distribution. Arch. Environ. Contam. Toxicol. Final 42: 470-476.

Meade, J., Hellou, J. and Pattel, T. 2002. Aerobic co-metabolism of sulfur, nitrogen and oxygen heterocycles by three marine bacterial consortia. J. Basic Microbiol. 42: 19-36.

Hellou, J., Steller, S., Zitko, V., Leonard, J., King, T., Milligan, T. and P. Yeats. 2002. Distribution of PACs in surficial sediments and bioavailability to mussels, Mytilus edulis, of Halifax harbour. Mar. Environ. Res. 53: 327-356.

Leonard, J. and Hellou, J. 2001. Separation and characterization of gall bladder bile metabolites from speckled trout, Salvinus fontinalis, exposed to individual polycyclic aromatic hydrocarbons. Environ. Toxicol. Chem. 20: 618-623.

Hellou, J., King T. and Willis, D. 2000. Seasonal and geographical distribution of PAHs in mussels, Mytilus edulis, collected from an urban harbour. Int. J. Polycyclic Aromatic Compounds. 20: 21-38.

Yeats, P., Stenson, G. and Hellou J. 1999. Essential elements and priority contaminants in liver, kidney, muscle and blubber of harp seal beaters. Sci. Tot. Environ. 243/244: 157-167.

Law, R.J. and J. Hellou. 1999. Contamination of fish and shellfish following oil spill incidents. Environ. Geosc. 6: 90-98.

Gatermann R., Hellou J., Huhnerfuss H., Rimkus G. and Zitko V. 1999. Polycyclic and nitro musks in the environment: a comparison between Canadian and European aquatic biota samples. Chemosphere. 38: 3431-3441.

Hellou J., Leonard J., Meade J, Sharpe S., Banoub J, Papiernik S., Eglinton L., Whelan J. 1999. Presence and metabolism of three heteroaromatic compounds in comparison to a PAH. Int. J. Pol. Arom. Compounds. 14-15: 221-230.

Hellou J., Mackay D., Banoub J. 1998. Levels, persistence and bioavailability of organic contaminants present in marine harbour sediments impacted by raw sewage. Chemosphere, 38: 457-473.

Hellou J., Mackay D., Banoub J. 1998. Dietary and aqueous uptake of organochlorines in finfish: a case study. Arch. Environ. Contam. Toxicol. 34: 280-288.

Zitko, V., Stenson G. and J. Hellou. 1998. Levels of organochlorine anf polycyclic aromatic compounds in harp seal beaters (Phoca groenlandica). Sci. Tot. Environ. 221: 11-29.

Hellou, J., D. Parsons, C. Andrews and G. Mercer. 1997. Organochlorine contaminants in the Northern shrimp, Pandalus borealis, collected from the Northwest Atlantic. Mar. Environ. Res. 44: 99-113.

Hellou, J., Warren, W., Andrews, C. and Mercer, G. 1997. Long-term fate of crankcase oil in rainbow trout: time and dose-response. Environ. Toxicol. Chem. 16: 1295-1303.

O´Malley, V.P., T.A. Abrajano, A. Stark, J. Hellou, L. Winsor. 1997. Tracing polycylcic aromatic hydrocarbons in the environment using 13C/12C ratios. Int. J. Polycyclic Aromatic Compounds. 9: 93-100.

Bieger, T., T.A. Abrajano and J. Hellou. 1997. Generation of biogenic hydrocarbons during a spring bloom in Newfoundland coastal waters. Org. Geochem. 26: 207-218.

Kozin, I., Gooijer, C., Velthorst N.H., Hellou, J. And V. Zitko. 1996. Isomer-specific detection of PAHs and PAH metabolites in environmental matrices by Shpol´skii luminescence spectroscopy. Chemosphere 33: 1435-1447.

Bieger, T., J. Hellou and T.A. Abrajano. 1995. Petroleum biomarkers as tracers of lubricating oils. Mar. Poll. Bull. 32:270-274.

Hellou, J. and Warren, W. 1997. Polycyclic aromatic compounds and saturated hydrocarbons in tissues of flatfish: insight on environmental exposure. Mar. Environ. Res. 43: 11-25.

O´Malley, V.P., Abrajano, T.A. and Hellou, J. 1996. Stable carbon isotopic apportionment of individual polycyclic aromatic hydrocarbons in St. John´s harbour, Newfoundland. Environ. Sci. Technol. 30: 634-639.

Hellou, J., V. Zitko, J. Friel, T. Alkanani. 1996. Distribution of elements in tissues of yellowtail flounder Pleuronectes ferruginea. Sci Tot. Environ. 181: 137-146.

Hellou, J. 1996. Polycyclic aromatic hydrocarbons in marine mammals, finfish and mammals. In: N Beyer and G Heinz, Eds. Interpreting concentrations of environmental contaminants in wildlife tissues. SETAC Special Publication, Pergamon Press. 229-250.

Payne, J.F., L.L. Fancey, J. Hellou, M.J. King, G.L. Fletcher. 1995. Aliphatic hydrocarbons in sediments: a chronic toxicity study with flounder (Pseudopleuronectes americanus) exposed to oil well drill cuttings. Can J. Fish. Aquat. Sci. 52: 2724-2735.

Hellou, J., G. Mercer and L.L. Fancey. 1995. Organochlorines in inshore versus offshore yellowtail flounder (Pseudiopleuronectes ferruginea): the effect of a small urban population on the environement. Int. J. Environ. Anal. Chem. 61: 275-284.

Hellou, J., Mackay, D. and Fowler, B.. 1995. Bioconcentration of PAC from sediments to muscle of finfish. Environ. Sci. Technol. 29: 2555-2560.

Hellou, J., W. G. Warren and G. Mercer. 1995. Organochlorine contaminants in pleuronectides: comparison between three tissues of three species inhabiting the Northwest Atlantic. Arch. Environ. Contam Toxicol. 29: 302-308.