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PAHs transfer to milk in exposed lactating ruminants Inra
Costera, A.; Feidt, C.; Dziurla, M.A.; Monteau, F.; Toussaint, H.; Rychen, G..
Polycyclic Aromatic Hydrocarbons (PAHs) are carcinogenic pollutants of mainly pyrolytic origin. Dairy cattle may introduce these pollutants in the food chain by grazing on contaminated grasslands. This study was aimed to determine the influence of the matrice (soil, hay, oil as control) on the transfer to milk and urine of three PAHs (phenanthrene, pyrene and benzo(a)pyrene) and their major metabolites. The studied matrices were artificially contaminated to ensure 50 mg ingestion for each PAH. Three goats were placed in controlled conditions and the matrice administration was achieved according to a latin square design. After each matrice administration (500 g hay, 25 g soil, 5 mL oil), milk and urine were sampled for the 57 h period following...
Tipo: Conference Paper Palavras-chave: HYDROCARBURE AROMATIQUE; CHAINE ALIMENTAIRE; POLLUANT; LAIT DE VACHE; TRANSFERT POLYCYCLIC AROMATIC HYDROCARBONS; PAH; CARCINOGENIC POLLUTANTS; DAIRY CATTLE; FOOD CHAIN; GRAZING; HAY; SOIL; TRANSFER; MILK; URINE.
Ano: 2007 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20076af05990&uri=/notices/prodinra1/2008/03/
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Xylem sap as a pathway for total mercury and methylmercury transport from soils to tree canopy in the boreal forest Inra
Bishop, K.H.; Lee, Y.H.; Munthe, J.; Dambrine, E..
Conifer needles are an important link in the cycling of Total Mercury (THg) and Methylmercury (MeHg) in the boreal ecosystem due to the high THg andMeHg concentrations in litterfall.Translocationwithin the tree ofHg fromsoils to the crowncanopy has been assumed to be a minor source of the Hg in litterfall. This paper, however, is the first to present direct observations of THg/MeHg transport from the soil via xylem sap. Xylem sap concentrations of THg and MeHg were measured in sap drained from different levels along the boles of freshly cut 100 year old Norway spruce (Picea abies) and Scots pine (Pinus sylvestris). The treescame from a mixed stand growing on podzolized till soils at the Svartberget Forest Research Station in N. Sweden. Soil solution...
Tipo: Journal Article Palavras-chave: FORET BOREALE; MERCURE; METHYLMERCURE; FEUILLE; SOL; TRANSPORT SOL PLANTE; XYLEME; LITIERE FORESTIERE; POLLUANT; METAL LOURD NORWAY SPRUCE; LITTER ; DEPOSITION; EMISSION; ENVIRONMENT; PLANTS; VAPOR; AIR; HG; ATMOSPHERIC DEPOSITION; LITTERFALL; MERCURY; METHYLMERCURY; XYLEM SAP .
Ano: 1998 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010da7bd4d&uri=/notices/prodinra1/2010/10/
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