A Russian spy in London is poisoned by his colleagues while eating Fish and Chips. Scotland Yard estimates the fish was embedded with 1 GBq each of 210Po and 212Pb. Assume an uptake of 10% of the radio-isotopes. Assume the 210Po deposit as 30% in the liver, 30% in the kidney, and 40% in the soft tissue. For 212Pb use the Skeleton and lung sources considered in Class. Use a biological half-life of 50 d for 210Po and 12 hours for 212Pb. Part I.A: Determine values for SEE (T<-S) for all source-target organ combinations in dose calculations. Part I.B: Determine the Us for all source organs for a unit intake of 1 Bq of each isotope. Part I.C: Determine values of committed dose equivalents (Sv/Bq) for all target organs. Part I.D: Find the tissue averaged absorbed dose and Effective per Bq for the decay products of each isotope. Part I.E: Estimate the dose and dose equivalent the Russian spyl would have had using the 50-year criteria. Part 1.F: If acute death occurs 7 days after the total tissue average organ doses accumulated to 10 Gy, how many days after dinner would death have occurred? Find and list the decay schemes and properties of each isotope. For absorbed fractions for source and target calculations interpolate values from ICRP 23 tables. Use the ICRP WT values for tissue averaged dose or Effective dose.

Problem I (40 points): A Russian spy in London is poisoned by his colleagues while eating Fish and Chips. Scotland Yard estimates the fish was embedded with 1 GBq each of 210Po and 212Pb. Assume an uptake of 10% of the radio-isotopes. Assume the 210Po deposit as 30% in the liver, 30% in the kidney, and 40% in the soft tissue. For 212pb use the Skeleton and lung sources considered in Class. Use a biological half-life of 50 d for 210Po and 12 hours for 212pb. Part I.A: Determine values for SEE (TES) for all source-target organ combinations in dose calculations. Part I.B: Determine the Us for all source organs for a unit intake of 1 Bq of each isotope. Part I.C: Determine values of committed dose equivalents (Sv/Bq) for all target organs. Part I.D: Find the tissue averaged absorbed dose and Effective per Bq for the decay products of each isotope. Part I.E: Estimate the dose and dose equivalent the Russian spy would have had using the 50-year criteria. Part 1.F: If acute death occurs 7 days after the total tissue average organ doses accumulated to 10 Gy, how many days after dinner would death have occurred? Find and list the decay schemes and properties of each isotope. For absorbed fractions for source and target calculations interpolate values from ICRP 23 tables. Use the ICRP WT values for tissue averaged dose or Effective dose.