DLTB4UI4
type: UserItem
resource: Metal contamination budget at the river basin scale: A critical analysis based on the Seine River
  type: AcademicArticle
  abstract: Material flow analysis and environmental contamination analysis are merged into a fluxflow analysis (F2A) as illustrated for the metal circulation in the Seine River catchment. F2A combines about 30 metal flows in the anthroposphere (14 million people) and/or metal fluxes in the environment (atmosphere, soils, and aquatic system) originating rom two dozens of sources. The nature and quality of data is very heterogeneous going from downscaled national economic statistics to upscaled daily environmental surveys. A triple integration is performed: space integration over the catchment (65000 km2), time integration for the 1950-2000 trend analysed at 5 year resolution, and a conceptual integration resulting in two F2A indicators. Despite the various data sources an average metal circulation is established for the 1994-2003 period and illustrated for zinc: (i) metal circulation in the anthroposphere is now two orders of magnitude higher than river outputs, (ii) long term metal storage, and their potential leaks, in soils, wastedumps and structures is also orders of magnitude higher than present river fluxes. Trend analysis is made through two F2A indicators, the per capita excess load at the river outlet and the leakage ratio (excess fluxes/metal demand). From 1950 to 2000, they both show a ten fold improvement of metal recycling while the metal demand has increased by 2.5 to 5 for Cd, Cu, Cr, Pb and Zn, and the population by 50%.
  pages: 1795–1822
  extra: Citation Key Alias: lestelMetalContaminationBudget2007, lestelMetalContaminationBudget2007c
  creator: Person
  author list: Person
  is part of: Issue
    date: 2007
    volume: 4
    issue: 3
    is part of: Hydrology and Earth System Sciences Discussions

Person
given name: L.
surname: Lestel

Person
given name: M.
surname: Meybeck

Person
given name: D.R.
surname: Thevenot