MODARIA II WG 4 : Working Group 4 – Transfer processes and data for radiological impact assessment • SG1: Terrestrial, freshwater and marine K d • SG2: Fukushima data • SG3: Non-temperate systems
Progress and Status of K d Sub group 1 • Prototype K d database populated with soil, freshwater and marine data. • Discussions held on what can be achieved within the timeframe of MODARIA II (October 2019). Focus will be on: • A detailed report on database structure • Database populated with Cs data for soil, freshwater and marine K d . • Template for the extraction of Cs data from the database by users. • Discussions with MODARIA II WG1 on end-user requirements for database.
Next Steps for K d Sub group 1 • Further refinement of marine K d data to reduce variability by taking salinity into account. • Inclusion of published Japanese Cs K d data for freshwater and marine environments. • Review Cs soil dataset to look at other factors influencing K d variability e.g. EC, K Exch . • To develop draft outline of user interface for Cs for K d database based on end-user requirements.
Subgroup 2 2 Fu Fukushima Par arameters Progress this week : (1) Data update were made by attendees (highlighted) following agreed contents @ IM (2) Report deadline (Dec. 1 this year) followed by first consultancy meeting Contents Writer International Collaborator Parameter (Introduction, B. Howard plus others - Description) Marine H. Takata (MERI) M. Johansen, J. Jeong, W. CR for Different fish species Men Algae, zooplankton, crustacean Marine H. Takata (MERI) M. Johansen The time taken to reach the CR measured before the accident Marine M. Kusakabe, H. Takata M. Johansen Dynamic Kd(a) (MERI) Catchment Y. Onda (Tsukuba Univ.) J. Smith, L. Garcia-SanchezWash-off rates from different management conditions, and Time dependency Freshwater Y. Onda (Tsukuba Univ.) P. Boyer, M. Vidal K d (a) for deposited sediment (surface area corrected) Freshwater S. Hayashi (NIES) & P. Boyer, M. Vidal K d(a) for suspended sediment Y. Onda - Site dependent - Event dependent Freshwater S. Hayashi (NIES) N. Beresford CR for fish (different fish species) Freshwater S. Hayashi N. Beresford CR for other biota (algae, amphibian, … )
Ecosystem (or Writer Potential International Parameter contents) Collaborator Forest H. Kato, S. Hashimoto G. Shaw, Y. Thiry, G. Interception Proehl, Forest S. Hashimoto G. Shaw, Y. Thiry, G. Effective half-lives in forest systems Proehl, Forest N. Imamura, M. Komatsu, G. Shaw, Y. Thiry, C. Databases • Soil concentration (Bq/m 2 ) S. Ohashi, & S. Hashimoto Barnett • Transfer to tree organs • Edible wild plants & Mushrooms • Forest K. Tagami B. Howard, N. Beresford, M. Game animals Wood Rice H. Tsukada B. Howard, Y. Choi CR to rice Rice H. Tsukada B. Howard, Y. Choi Paddy fields Inflow & outflow Agricultural T. Shinano B. Howard CR for Crops, Pasture, (exchangeable product K in soil related) Agricultural D. Takata, M. Sato, K. B. Howard, F. Carini CR for tree fruits product Tagami Interception, translocation to fruits Agricultural N. Yamaguchi Y. Thiry RIP product Farm animal K. Tagami B. Howard F m , F f and CR Food processing K. Tagami G. Proehl F r Thursday pm: Further discussion on structure of Tecdoc (contents) and on forests
Progress and Status of K d Sub group 3 TF available for some countries in arid regions TF Cs134 Cs137 Sr90 K40 Ra226 U234 U238 Po210 Pb210 Th232 Olives Orange Lettuce Winter wheat grains Alfalfa Palm dates Onion Beans Potatos Tomato Cucumber Pepper Capsicum Organic pepper Chili pepper Eggplant Zucchiniss Grape Barley Lentil Chickpea Palm date pits Apricot
Initial comparison example Sr Cs
Initial experimental work in Kuwait Transfer of Cs 134 and Sr 85 soil to plant Three types of leafy vegetables: Roca, lettuce, parsley Cucumber, tomato and paprika Column experiments 8
Humid tropical soil-to-plant TF data • Recently started • Old Data issues: • Previous Tropical TF CRP data not published even though included in TRS 472. Will be published as an annex to MODARIA II report. • Accessibility to all previous Tropical TF used in TRS 472 needed. • A.I. has helped make the old TF data available. • Old data needs filtering to include/exclude info based on newly adopted KG class A • In: Australia, Brazil, Bangladesh, Thailand, Vietnam, Marshall Islands • ? India • Elsewhere: Japan, Taiwan, Korea, Greece, Turkey, Syria • QC needed to ensure that data from each country only refer to KG class A
• New data • Template circulated and 1 formatted set has been returned (India) another has been promised (North Australian native fruits) • Prelim. literature search 2009-Present identified 14 useful papers plus original 4. Data need to be checked and transcribed into template. Crops Regions Elements Medicinal plants Southern India, Thailand Pb, Po, Ra, Th, K, Cs Vegetables, fruit, tapioca Malaysia Ra, Th, K Sugar cane, sugar Brazil Ra, Th, K Ra-226, -228, Pb, Th, K, Rice India, Malaysia, Nigeria Cs Tobacco India Rn, stable metals Tomatoes, Okra Nigeria Ra, Th, K Grains, seeds, trees Parana, Brazil Po, U-234, -238 Mangroves, Typha Thailand Ra, Th, K, HM Root vegetables Malaysia Ra, Th, K, Y Lemons Goiania, Brazil K, Cs
Interim meetings • Vienna late spring ? • Kd and Fukushima data • Morocco end May ? • Non-temperate group
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