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Preparatory discussion on Processes and Parameters of relevance for WG7

Preparatory discussion on Processes and Parameters of relevance for WG7. All participants (WGL in the capacity of moderator of the discussions). Conclusions Journées Tritium SFRP 2009. Importance of tritium speciation Problems with definition and measurements units for low doses

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Preparatory discussion on Processes and Parameters of relevance for WG7

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  1. Preparatory discussion on Processes and Parameters of relevance for WG7 All participants (WGL in the capacity of moderator of the discussions)

  2. Conclusions Journées Tritium SFRP 2009 • Importance of tritium speciation • Problems with definition and measurements units for low doses • Importance of measuement techniques in field work and research • Importance of appropiate vocabulary: e.g. bioaccumulation • Difficulties in épidémiologie: multiparamètres • Problèms with disposal and treatment of 3H • Difficulties of ICRP: REB, models, gestion of exposure and risk • Problems with OBT analitical techniques

  3. Intreaction matrix-terrestrial (IUR)

  4. Simplified for 14C

  5. Macro processes • Wet deposition-HTO: concentration in rain(depends on..) Interception by plants (depends on…) Uptake by leaves (depends on..) Penetration in soil (depends on..) SNOW • Dry deposition HT and HTO: Uptake by bare soil (depends on..) Uptake by covered soil (depends on..) Conversion HT>HTO (depends on..) Uptake by plants (depends on…) Uptake in dew conditions WINTER

  6. Macro processes- continuation • Reemission from soil-HTO (depends on..) • Reemission from plants-HTO (depends on..) • Transfer from soil to plants-HTO(depends on..) • Secondary source due to reemission – influences on final plant and soil dynamics) • Reemission from forest ?? • Dynamics of the soil-plant complex (depends on..) • Losses in storage- preparation of feed –HTO • Losses/concentration in food preparation-HTO • Contribution of OBT metabolism to plant HTO at harvest?

  7. Macro processes- continuation • OBT formation in daylight • OBT formation in night • OBT respiration • OBT partition to edible plant part • OBT speciation • OBT oxidation in feed preparation and storage • OBT oxidation in food preparation and storage • OBT in litter and soil ??

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